Camera module including piezoelectric motor

Abstract

A camera module according to an embodiment includes: a camera housing; the lens assembly comprises a lens, and at least one part of the lens assembly is arranged in the camera shell; a first carrier; a second carrier to which the lens assembly is coupled and which is movable relative to the camera housing in a direction of an optical axis of the lens, the first carrier being disposed in the second carrier and which is movable relative to the camera housing in one or more directions perpendicular to the optical axis; a first piezoelectric motor connected to the first carrier and the second carrier and providing a first driving force for moving the first carrier in a direction of the optical axis; and a second piezoelectric motor connected to the camera housing and a second carrier, and providing a second driving force for moving the second carrier in the one or more directions perpendicular to the optical axis.

Description

Technical Field

[0001] Various embodiments of the present disclosure described herein relate to a camera module including a piezoelectric motor. Background Art

[0002] A mobile electronic device, such as a smart phone, may include a camera module. The camera module may include a lens, a lens barrel surrounding the lens, and an image sensor. The camera module may support various functions. For example, the camera module may support functions related to image stabilization (e.g., optical image stabilization (OIS), digital image stabilization (DIS), or electronic image stabilization (EIS)) and auto focus (AF).

[0003] The camera module can provide an image stabilization function and an auto focus function by moving the lens relative to the image sensor. For example, the camera module can move the lens relative to the image sensor in a direction perpendicular to the optical axis for the image stabilization function, or can move the lens relative to the image sensor in the direction of the optical axis for the auto focus function.

[0004] The camera module may include various types of actuators for achieving movement of the lens. For example, the actuator may be provided by using a stepper motor (STM), a voice coil motor (VCM), a shape memory alloy (SMA), and a piezoelectric motor.

[0005] The above information may be provided as related art in order to better understand the present disclosure. No claim or determination is made as to whether any of the above content may be used as prior art related to the present disclosure. Summary of the invention

[0006] Technical Solution

[0007] A camera module according to an embodiment of the present disclosure includes: a camera housing; a lens assembly including a lens, at least a portion of which is disposed in the camera housing; a first carrier, the lens assembly being coupled to the first carrier and being movable relative to the camera housing in the direction of the optical axis of the lens; a second carrier, the first carrier being coupled to the second carrier and being movable relative to the camera housing in one or more directions perpendicular to the optical axis; a first piezoelectric motor, connected to the first carrier and the second carrier and providing a first driving force for moving the first carrier in the direction of the optical axis; and a second piezoelectric motor, connected to the camera housing and the second carrier and providing a second driving force for moving the second carrier in the one or more directions perpendicular to the optical axis. The first carrier is connected to the second carrier so as to be movable in the direction of the optical axis. In a state where the second piezoelectric motor is disposed in the camera housing, when at least a portion of the second piezoelectric motor moves in a direction perpendicular to the optical axis, the second piezoelectric motor transmits the second driving force to the second carrier. BRIEF DESCRIPTION OF THE DRAWINGS

[0008] Figure 1 is a block diagram illustrating electronic devices in a network environment according to various embodiments.

[0009] Figure 2 is a block diagram illustrating a camera module according to various embodiments.

[0010] Figure 3a is a front perspective view of an electronic device according to an embodiment.

[0011] Figure 3b is a rear perspective view of an electronic device according to an embodiment.

[0012] Figure 3c is an exploded perspective view of an electronic device according to an embodiment.

[0013] Figure 4a is a front view of a camera module according to an embodiment.

[0014] Figure 4b is a plan view of a camera module according to an embodiment.

[0015] Figure 5 is an exploded perspective view of a camera module according to an embodiment.

[0016] Figure 6 is a view showing a lens carrier and a first piezoelectric motor of a camera module according to an embodiment.

[0017] Figure 7 2 is a view showing a first carrier, a second carrier, and a first piezoelectric motor of a camera module according to an embodiment.

[0018] Figure 8 is a view illustrating a first carrier, a second carrier, and a first spring member of a camera module according to an embodiment.

[0019] Figure 9a is a view showing a first piezoelectric motor of a camera module according to an embodiment.

[0020] Figure 9b is a view showing a first piezoelectric motor of a camera module according to an embodiment.

[0021] Fig.9c 2 is a view showing a piezoelectric element and an elastic body of a first piezoelectric motor according to an embodiment.

[0022] Fig.10 is a view showing the operation of the first piezoelectric motor according to the embodiment.

[0023] Fig.112 is a view showing an operation in which a first piezoelectric element and an elastic body of a first piezoelectric motor according to an embodiment vibrate.

[0024] Fig.12 is a view showing a coupling structure between a first piezoelectric motor and a second carrier of a camera module according to an embodiment.

[0025] Fig.13 is a view illustrating a coupling structure of a second carrier, a guide member, and a second piezoelectric motor of a camera module according to an embodiment.

[0026] Fig.14 is an exploded perspective view showing a camera housing, a second carrier, a guide member, and a second piezoelectric motor of a camera module according to an embodiment.

[0027] Fig.15a is a view showing a second piezoelectric motor of a camera module according to an embodiment.

[0028] Fig.15b is a view showing a second piezoelectric motor of a camera module according to an embodiment.

[0029] Fig.16 2 is a view showing the operation of the second piezoelectric motor according to the embodiment.

[0030] Fig.17 is a view illustrating a coupling structure of a guide member and a second piezoelectric motor of a camera module according to an embodiment.

[0031] Fig.18a is a view illustrating a second carrier, a first guide member, and a second guide member of a camera module according to an embodiment.

[0032] Fig.18b is a view illustrating a second carrier, a first guide member, and a second guide member of a camera module according to an embodiment.

[0033] Fig.19 is a view showing an electrical connection structure between a substrate member and a piezoelectric motor of a camera module according to an embodiment.

[0034] Fig.20a 2 is a view showing a moving operation of a first connecting member in a first piezoelectric motor according to an embodiment.

[0035] Fig.20b 2 is a view showing a moving operation of a second connecting member in a second piezoelectric motor according to the embodiment.

[0036] Fig.20c is a graph depicting a moving operation of a connecting member in a first piezoelectric motor and a second piezoelectric motor according to an embodiment.

[0037] Fig.21 2 is a view showing a camera housing, a second carrier, and a second piezoelectric motor of a camera module according to an embodiment.

[0038] Fig. 22 2 is a view showing a camera housing, a second carrier, and a second piezoelectric motor of a camera module according to an embodiment.

[0039] Fig.23 2 is a view showing a camera housing, a second carrier, and a second piezoelectric motor of a camera module according to an embodiment.

[0040] With regard to the description of the drawings, the same or similar reference numerals may be used to refer to the same or similar components. DETAILED DESCRIPTION

[0041] Hereinafter, various embodiments of the present disclosure will be described with reference to the accompanying drawings. Therefore, those of ordinary skill in the art will recognize that various modifications, equivalents and / or substitutions may be made to the various embodiments described herein without departing from the scope and spirit of the present disclosure. Whenever a feature is described as "substantially vertical", "substantially vertical", etc., the term "substantially" may be omitted and the feature may be described as "vertical", "vertical", etc.

[0042] Figure 1 is a block diagram illustrating an electronic device 101 in a network environment 100 according to various embodiments.

[0043] Reference Figure 1 , the electronic device 101 in the network environment 100 may communicate with the electronic device 102 via the first network 198 (e.g., a short-range wireless communication network), or communicate with at least one of the electronic device 104 or the server 108 via the second network 199 (e.g., a long-range wireless communication network). According to an embodiment, the electronic device 101 may communicate with the electronic device 104 via the server 108. According to an embodiment, the electronic device 101 may include a processor 120, a memory 130, an input module 150, a sound 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 user identification module (SIM) 196, or an antenna module 197. In some embodiments, at least one of the components (e.g., the connection terminal 178) may be omitted from the electronic device 101, or one or more other components may be added to the electronic device 101. In some embodiments, some of the components (eg, sensor module 176, camera module 180, or antenna module 197) may be implemented as a single component (eg, display module 160).

[0044] The processor 120 may run, for example, software (e.g., program 140) to control at least one other component (e.g., hardware component or software component) of the electronic device 101 that is combined with the processor 120, and may perform various data processing or calculations. According to one embodiment, as at least part of the data processing or calculation, the processor 120 may store a command or data received from another component (e.g., sensor module 176 or communication module 190) in the volatile memory 132, process the command or data stored in the volatile memory 132, and store the resultant data in the non-volatile memory 134. According to an embodiment, the processor 120 may include a main processor 121 (e.g., a central processing unit (CPU) or an application processor (AP)) or an auxiliary processor 123 (e.g., a graphics processing unit (GPU), a neural processing unit (NPU), an image signal processor (ISP), a sensor hub processor, or a communication processor (CP)) that is operationally independent or combined with the main processor 121. For example, when the electronic device 101 includes a main processor 121 and an auxiliary processor 123, the auxiliary processor 123 may be adapted to consume less power than the main processor 121, or adapted to be dedicated to a specific function. The auxiliary processor 123 may be implemented separately from the main processor 121, or as part of the main processor 121.

[0045] When the main processor 121 is in an inactive (e.g., sleep) state, the auxiliary processor 123 (rather than the main processor 121) may control at least some of the functions or states related to at least one component among the components of the electronic device 101 (e.g., the display module 160, the sensor module 176, or the communication module 190), or when the main processor 121 is in an active state (e.g., running an application), the auxiliary processor 123 may control at least some of the functions or states related to at least one component among the components of the electronic device 101 (e.g., the display module 160, the sensor module 176, or the communication module 190) together with the main processor 121. According to an embodiment, the auxiliary processor 123 (e.g., an image signal processor or a communication processor) may be implemented as part of another component (e.g., a camera module 180 or a communication module 190) that is functionally related to the auxiliary processor 123. According to an embodiment, the auxiliary processor 123 (e.g., a neural processing unit) may include a hardware structure dedicated to artificial intelligence model processing. The artificial intelligence model may be generated by machine learning. For example, such learning may be performed by the electronic device 101 where the artificial intelligence is executed or via a separate server (e.g., server 108). The learning algorithm may include, but is not limited to, supervised learning, unsupervised learning, semi-supervised learning, or reinforcement learning, for example. The artificial intelligence model may include multiple artificial neural network layers. The artificial neural network may be a deep neural network (DNN), a convolutional neural network (CNN), a recurrent neural network (RNN), a restricted Boltzmann machine (RBM), a deep belief network (DBN), a bidirectional recurrent deep neural network (BRDNN), a deep Q network, or a combination of two or more thereof, but is not limited thereto. Additionally or alternatively, the artificial intelligence model may include a software structure in addition to a hardware structure.

[0046] The memory 130 may store various data used by at least one component of the electronic device 101 (e.g., the processor 120 or the sensor module 176). The various data may include, for example, software (e.g., the program 140) and input data or output data for commands related thereto. The memory 130 may include a volatile memory 132 or a nonvolatile memory 134.

[0047] The program 140 may be stored as software in the memory 130 , and may include, for example, an operating system (OS) 142 , middleware 144 , or applications 146 .

[0048] The input module 150 may receive a command or data to be used by another component (e.g., the processor 120) of the electronic device 101 from outside (e.g., a user) of the electronic device 101. The input module 150 may include, for example, a microphone, a mouse, a keyboard, a key (e.g., a button), or a digital pen (e.g., a stylus).

[0049] The sound output module 155 can output sound signals to the outside of the electronic device 101. The sound output module 155 may include, for example, a speaker or a receiver. The speaker can be used for general purposes such as playing multimedia or playing records. The receiver can be used to receive incoming calls. Depending on the embodiment, the receiver can be implemented as a separate part from the speaker, or as part of the speaker.

[0050] The display module 160 may visually provide information to the outside of the electronic device 101 (e.g., a user). The display module 160 may include, for example, a display, a holographic device, or a projector, and a control circuit for controlling a corresponding one of the display, the holographic device, and the projector. According to an embodiment, the display module 160 may include a touch sensor adapted to detect a touch or a pressure sensor adapted to measure the strength of a force caused by a touch.

[0051] The audio module 170 may convert sound into an electrical signal, or vice versa. According to an embodiment, the audio module 170 may obtain sound via the input module 150, or output sound via the sound output module 155 or an earphone of an external electronic device (e.g., electronic device 102) directly (e.g., wired) or wirelessly coupled to the electronic device 101.

[0052] The sensor module 176 may detect an operating state (e.g., power or temperature) of the electronic device 101 or an environmental state (e.g., a state of a user) outside the electronic device 101, and then generate an electrical signal or data value corresponding to the detected state. According to an embodiment, the sensor module 176 may include, for example, a gesture sensor, a gyro sensor, an atmospheric pressure sensor, a magnetic sensor, an acceleration sensor, a grip sensor, a proximity sensor, a color sensor, an infrared (IR) sensor, a biometric sensor, a temperature sensor, a humidity sensor, or an illumination sensor.

[0053] The interface 177 may support one or more specific protocols to be used to directly (e.g., wired) or wirelessly combine the electronic device 101 with an external electronic device (e.g., the electronic device 102). According to an embodiment, the interface 177 may include, for example, a high-definition multimedia interface (HDMI), a universal serial bus (USB) interface, a secure digital (SD) card interface, or an audio interface.

[0054] The connection end 178 may include a connector, wherein the electronic device 101 can be physically connected to an external electronic device (e.g., the electronic device 102) via the connector. According to an embodiment, the connection end 178 may include, for example, an HDMI connector, a USB connector, an SD card connector, or an audio connector (e.g., a headphone connector).

[0055] The haptic module 179 may convert the electrical signal into mechanical stimulation (eg, vibration or motion) or electrical stimulation that can be recognized by the user via his sense of touch or kinesthetic sense. According to an embodiment, the haptic module 179 may include, for example, a motor, a piezoelectric element, or an electrical stimulator.

[0056] The camera module 180 may capture still images or moving images. According to an embodiment, the camera module 180 may include one or more lenses, an image sensor, an image signal processor, or a flash.

[0057] The power management module 188 may manage power supply to the electronic device 101. According to one embodiment, the power management module 188 may be implemented as, for example, at least a portion of a power management integrated circuit (PMIC).

[0058] The battery 189 may power at least one component of the electronic device 101. According to an embodiment, the battery 189 may include, for example, a non-rechargeable primary battery, a rechargeable secondary battery, or a fuel cell.

[0059] The communication module 190 may support establishing a direct (e.g., wired) communication channel or a wireless communication channel between the electronic device 101 and an external electronic device (e.g., electronic device 102, electronic device 104, or server 108), and perform communication via the established communication channel. The communication module 190 may include one or more communication processors capable of operating independently from the processor 120 (e.g., an application processor (AP)) and supporting direct (e.g., wired) communication or wireless communication. According to an embodiment, the communication module 190 may include a wireless communication module 192 (e.g., a cellular communication module, a short-range wireless communication module, or a global navigation satellite system (GNSS) communication module) or a wired communication module 194 (e.g., a local area network (LAN) communication module or a power line communication (PLC) module). A corresponding one of these communication modules may communicate via a first network 198 (e.g., a short-range communication network such as Bluetooth TM ), Wireless Fidelity (Wi-Fi) Direct, or Infrared Data Association (IrDA)), or a second network 199 (e.g., a long-distance communication network such as a traditional cellular network, a 5G network, a next-generation communication network, the Internet, or a computer network (e.g., a LAN or a wide area network (WAN)))) to communicate with an external electronic device. These various types of communication modules may be implemented as a single component (e.g., a single chip), or may be implemented as multiple components separated from each other (e.g., multiple chips). The wireless communication module 192 may identify and authenticate the electronic device 101 in a communication network (such as a first network 198 or a second network 199) using user information (e.g., an International Mobile Subscriber Identity (IMSI)) stored in the user identification module 196.

[0060] The wireless communication module 192 can support 5G networks after 4G networks and next-generation communication technologies (e.g., new radio (NR) access technology). NR access technology can support enhanced mobile broadband (eMBB), massive machine type communication (mMTC), or ultra-reliable low-latency communication (URLLC). The wireless communication module 192 can support high-frequency bands (e.g., millimeter wave bands) to achieve, for example, high data transmission rates. The wireless communication module 192 can support various technologies for ensuring performance on high-frequency bands, such as, for example, beamforming, massive multiple-input multiple-output (massive MIMO), full-dimensional MIMO (FD-MIMO), array antennas, analog beamforming, or massive antennas. The wireless communication module 192 can support various requirements specified in the electronic device 101, an external electronic device (e.g., electronic device 104), or a network system (e.g., a second network 199). According to an embodiment, the wireless communication module 192 may support a peak data rate for implementing eMBB (e.g., 20 Gbps or greater), loss coverage for implementing mMTC (e.g., 164 dB or less), or U-plane delay for implementing URLLC (e.g., 0.5 ms or less for each of the downlink (DL) and uplink (UL), or 1 ms or less round trip).

[0061] The antenna module 197 may transmit or receive a signal or power to or from the outside of the electronic device 101 (e.g., an external electronic device). According to an embodiment, the antenna module 197 may include an antenna including a radiating element formed of a conductive material or a conductive pattern formed in or on a substrate (e.g., a printed circuit board (PCB)). According to an embodiment, the antenna module 197 may include a plurality of antennas (e.g., an array antenna). In this case, at least one antenna suitable for a communication scheme 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 (e.g., the wireless communication module 192). A signal or power may then be transmitted or received between the communication module 190 and the external electronic device via the selected at least one antenna. According to an embodiment, another component (e.g., a radio frequency integrated circuit (RFIC)) other than the radiating element may be additionally formed as a part of the antenna module 197.

[0062] According to various embodiments, the antenna module 197 may form a millimeter wave antenna module. According to an embodiment, the millimeter wave antenna module may include a printed circuit board, an RFIC, and a plurality of antennas (e.g., array antennas), wherein the RFIC is disposed on a first surface (e.g., bottom surface) of the printed circuit board or adjacent to the first surface and is capable of supporting a specified high frequency band (e.g., millimeter wave band), and the plurality of antennas are disposed on a second surface (e.g., top surface or side surface) of the printed circuit board or adjacent to the second surface and are capable of transmitting or receiving signals of the specified high frequency band.

[0063] At least some of the above components may be coupled to each other via an inter-peripheral communication scheme (e.g., a bus, a general purpose input output (GPIO), a serial peripheral interface (SPI), or a mobile industry processor interface (MIPI)) and communicatively transmit signals (e.g., commands or data) therebetween.

[0064] According to an embodiment, a command or data may be sent or received between the electronic device 101 and the external electronic device 104 via the server 108 combined with the second network 199. Each of the electronic device 102 or the electronic device 104 may be a device of the same type as the electronic device 101, or a device of a different type from the electronic device 101. According to an embodiment, all or some operations to be executed in the electronic device 101 may be executed in one or more of the external electronic device 102, the external electronic device 104, or the external electronic device 108. For example, if the electronic device 101 should automatically execute a function or service or should execute a function or service in response to a request from a user or another device, the electronic device 101 may request one or more external electronic devices to execute at least part of the function or service instead of executing the function or service, or the electronic device 101 may request the one or more external electronic devices to execute at least part of the function or service in addition to executing the function or service. The one or more external electronic devices receiving the request may execute at least part of the function or service requested, or execute another function or another service related to the request, and transmit the result of the execution to the electronic device 101. The electronic device 101 may provide the result as at least a partial reply to the request in the case of further processing the result or in the case of not further processing the result. To this end, cloud computing, distributed computing, mobile edge computing (MEC) or client-server computing technology, for example, may be used. The electronic device 101 may use, for example, distributed computing or mobile edge computing to provide ultra-low latency services. In another embodiment, the external electronic device 104 may include an Internet of Things (IoT) device. The server 108 may be an intelligent server using machine learning and / or neural networks. According to an embodiment, the external electronic device 104 or the server 108 may be included in the second network 199. The electronic device 101 may be applied to intelligent services (e.g., smart homes, smart cities, smart cars or health care) based on 5G communication technology or IoT-related technologies.

[0065] Figure 2 is a block diagram 200 illustrating a camera module 180 according to various embodiments.

[0066] Reference Figure 2, the camera module 180 may include a lens assembly 210, a flash 220, an image sensor 230, an image stabilizer 240, a memory 250 (e.g., a buffer memory), or an image signal processor 260. The lens assembly 210 may collect light emitted or reflected from an object whose image is to be captured. The lens assembly 210 may include one or more lenses. According to an embodiment, the camera module 180 may include a plurality of lens assemblies 210. In this case, the camera module 180 may form, for example, a dual camera, a 360-degree camera, or a spherical camera. Some of the plurality of lens assemblies 210 may have the same lens properties (e.g., viewing angle, focal length, autofocus, f-number, or optical zoom), or at least one lens assembly may have one or more lens properties different from those of another lens assembly. The lens assembly 210 may include, for example, a wide-angle lens or a telephoto lens.

[0067] The flash 220 may emit light, wherein the emitted light is used to enhance light reflected from an object. According to an embodiment, the flash 220 may include one or more light emitting diodes (LEDs) (e.g., red, green, blue (RGB) LEDs, white LEDs, infrared (IR) LEDs, or ultraviolet (UV) LEDs) or xenon lamps. The image sensor 230 may acquire an image corresponding to an object by converting light emitted or reflected from an object and transmitted through the lens assembly 210 into an electrical signal. According to an embodiment, the image sensor 230 may include one image sensor selected from a plurality of image sensors having different properties (e.g., an RGB sensor, a black and white (BW) sensor, an IR sensor, or a UV sensor), a plurality of image sensors having the same properties, or a plurality of image sensors having different properties. Each image sensor included in the image sensor 230 may be implemented using, for example, a charge coupled device (CCD) sensor or a complementary metal oxide semiconductor (CMOS) sensor.

[0068] The image stabilizer 240 may move the image sensor 230 or at least one lens included in the lens assembly 210 in a specific direction, or control an operational property of the image sensor 230 (e.g., adjust the readout timing) in response to the movement of the camera module 180 or the electronic device 101 including the camera module 180. In this way, at least a portion of the negative effects (e.g., image blur) generated due to the movement of the image being captured is allowed to be compensated. According to an embodiment, the image stabilizer 240 may sense such movement of the camera module 180 or the electronic device 101 using a gyro sensor (not shown) or an acceleration sensor (not shown) arranged inside or outside the camera module 180. According to an embodiment, the image stabilizer 240 may be implemented as, for example, an optical image stabilizer.

[0069] The memory 250 may at least temporarily store at least a portion of an image acquired via the image sensor 230 for subsequent image processing tasks. For example, if multiple images are captured quickly or image capture is delayed due to shutter lag, the acquired original image (e.g., Bayer pattern image, high-resolution image) may be stored in the memory 250, and its corresponding copy image (e.g., low-resolution image) may be previewed via the display module 160. Then, if a specified condition is met (e.g., by a user's input or a system command), at least a portion of the original image stored in the memory 250 may be acquired and processed by, for example, the image signal processor 260. According to an embodiment, the memory 250 may be configured as at least a portion of the memory 130, or the memory 250 may be configured as a separate memory that operates independently of the memory 130.

[0070] The image signal processor 260 may perform one or more image processing on an image acquired via the image sensor 230 or an image stored in the memory 250. The one or more image processing may include, for example, depth map generation, three-dimensional (3D) modeling, panorama generation, feature point extraction, image synthesis, or image compensation (e.g., noise reduction, resolution adjustment, brightness adjustment, blurring, sharpening, or softening). Additionally or alternatively, the image signal processor 260 may perform control (e.g., exposure time control or readout timing control) on at least one of the components included in the camera module 180 (e.g., image sensor 230). The image processed by the image signal processor 260 may be stored back to the memory 250 for further processing, or the image may be provided to an external component outside the camera module 180 (e.g., memory 130, display module 160, electronic device 102, electronic device 104, or server 108). According to an embodiment, the image signal processor 260 may be configured as at least a part of the processor 120, or the image signal processor 260 may be configured as a separate processor that operates independently of the processor 120. If the image signal processor 260 is configured as a separate processor from the processor 120 , at least one image processed by the image signal processor 260 may be displayed as it is by the processor 120 via the display module 160 , or may be displayed after being further processed.

[0071] According to an embodiment, the electronic device 101 may include a plurality of camera modules 180 having different properties or functions. In this case, at least one camera module 180 of the plurality of camera modules 180 may form, for example, a wide-angle camera, and at least another camera module 180 of the plurality of camera modules 180 may form a telephoto camera. Similarly, at least one camera module 180 of the plurality of camera modules 180 may form, for example, a front camera, and at least another camera module 180 of the plurality of camera modules 180 may form a rear camera.

[0072] Figure 3a is a front perspective view of an electronic device according to an embodiment. Figure 3b is a rear perspective view of an electronic device according to an embodiment. Figure 3c is an exploded perspective view of an electronic device according to an embodiment.

[0073] Reference Figure 3a and Figure 3b According to the electronic device 300 of the embodiment (for example, Figure 1 The electronic device 101 of the embodiment may include a housing 310, the housing 310 including a first surface (or front surface) 310A, a second surface (or rear surface) 310B, and a third surface (or side surface) 310C surrounding a space between the first surface 310A and the second surface 310B. In various embodiments, the housing 310 may refer to a structure forming some of the first surface 310A, the second surface 310B, and the third surface 310C.

[0074] The first surface 310A can be formed by the front plate 302, at least a portion of which is substantially transparent (e.g., a glass plate or a polymer plate including various coatings). The second surface 310B can be formed by a substantially opaque back plate 311. The back plate 311 can be formed by, for example, 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. The third surface 310C can be formed by a side frame structure (or side member) 318, which is combined with the front plate 302 and the back plate 311 and includes metal and / or polymer. In various embodiments, the back plate 311 and the side frame structure 318 can be formed integrally with each other and can include the same material (e.g., a metal material (such as, aluminum)).

[0075] The front plate 302 may include two first regions 310D extending curvedly and seamlessly from a partial region of the first surface 310A toward the back plate 311. The first regions 310D may be located at opposite long edges of the front plate 302.

[0076] The back plate 311 may include two second regions 310E extending curvedly and seamlessly from a partial region of the second surface 310B toward the front plate 302. The second regions 310E may be located at opposite long edges of the back plate 311.

[0077] In various embodiments, the front plate 302 (or the back plate 311) may include only one of the first regions 310D (or the second regions 310E). In addition, in other embodiments, the front plate 302 (or the back plate 311) may not include a portion of the first region 310D (or the second region 310E).

[0078] When viewed from the side of the electronic device 300, the side frame structure 318 may have a first thickness (or width) at an edge (e.g., a short edge) that does not include the first region 310D or the second region 310E, and may have a second thickness at an edge (e.g., a long edge) that includes the first region 310D or the second region 310E, wherein the second thickness is less than the first thickness.

[0079] The electronic device 300 may include a display 301 (eg, Figure 1 , display module 160), audio modules 303, 304 and 307 (e.g., Figure 1 audio module 170), a sensor module (not shown) (e.g., Figure 1 sensor module 176), camera modules 305, 312 and 313 (e.g., Figure 1 and Figure 2 camera module 180), key input device 317 (eg, Figure 1 150), a light emitting element (not shown), or a connector hole 308 (e.g., Figure 1 In another embodiment, the electronic device 300 may omit at least one of the above components (eg, the key input device 317 or the light emitting element (not shown)), or may additionally include one or more other components.

[0080] The display 301 may be visually exposed through a majority of the front plate 302. For example, at least a portion of the display 301 may be visually exposed through the front plate 302 including the first region 310D of the third surface 310C and the first surface 310A. The display 301 may be disposed on the rear surface of the front plate 302.

[0081] The perimeter of the display 301 may be formed to be substantially the same shape as the adjacent outer edge of the front plate 302. In another embodiment, in order to expand the visually exposed area of ​​the display 301, the gap between the outer edge of the display 301 and the outer edge of the front plate 302 may be substantially constant.

[0082] The surface of the housing 310 (or the front plate 302) may include a screen display area formed when the display 301 is visually exposed. For example, the screen display area may include a first surface 310A and a first area 310D of a side surface.

[0083] In various embodiments, the screen display areas 310A and 310D may include a sensing area (not shown) configured to obtain biometric information of the user. When the screen display areas 310A and 310D include a sensing area, this may mean that at least a portion of the sensing area overlaps with the screen display areas 310A and 310D. For example, the sensing area (not shown) may refer to an area that can display visual information through the display 301 like other areas of the screen display areas 310A and 310D and additionally obtain biometric information (e.g., fingerprint) of the user.

[0084] The screen display areas 310A and 310D of the display 301 may include areas through which the first camera module 305 (e.g., a punch hole camera) is visually exposed. For example, at least a portion of the perimeter of the area through which the first camera module 305 is visually exposed may be surrounded by the screen display areas 310A and 310D. In various embodiments, the first camera module 305 may include multiple camera modules (e.g., Figure 1 camera module 180).

[0085] In various embodiments, the display 301 may be configured such that at least one of an audio module (not shown), a sensor module (not shown), a camera module (e.g., a first camera module 305), or a light emitting element (not shown) is disposed on the rear surface of the screen display areas 310A and 310D. For example, the electronic device 300 may be configured such that the first camera module 305 (e.g., an under-screen camera (UDC)) is disposed on the rear side (e.g., a side facing the -z axis direction) of the first surface 310A (e.g., the front surface) and / or the side surface 310C (e.g., at least one surface of the first area 310D) so as to face the first surface 310A and / or the side surface 310C. For example, the first camera module 305 may be disposed below the display 301 and may not be visually exposed through the screen display areas 310A and 310D.

[0086] In various embodiments, when the first camera module 305 is implemented with an under-screen camera, the area of ​​the display 301 facing the first camera module 305 may be formed as a transmissive area with a specified transmittance as a portion of the display area for displaying content. For example, the transmissive area may have a transmittance of about 5% to about 50%. The transmissive area may include a portion for focusing on an image sensor (e.g., Figure 2The transmissive region of the display 301 may include an area through which light that generates an image on the image sensor 230 of the display 301 passes, and the area overlaps with an active area (e.g., a field of view (FOV) area) of the first camera module 305. For example, the transmissive region of the display 301 may include an area having a lower pixel density and / or wiring density than the surrounding area.

[0087] Display 301 may be combined with, or disposed adjacent to, a touch detection circuit, a pressure sensor capable of measuring the intensity (pressure) of a touch, and / or a digitizer for a stylus that detects the type of magnetic field.

[0088] The audio modules 303 , 304 , and 307 may include microphone holes 303 , 304 and a speaker hole 307 .

[0089] The microphone holes 303 and 304 may include a first microphone hole 303 formed in a partial area of ​​the third surface 310C and a second microphone hole 304 formed in a partial area of ​​the second surface 310B. A microphone (not shown) for obtaining external sound may be provided in the microphone holes 303 and 304. The microphone may include a plurality of microphones to sense the direction of the sound.

[0090] The second microphone hole 304 formed in a partial area of ​​the second surface 310B may be disposed adjacent to the camera modules 305, 312, and 313. For example, the second microphone hole 304 may obtain sound when the camera modules 305, 312, and 313 are executed, or may obtain sound when other functions are executed.

[0091] The speaker hole 307 may include an external speaker hole 307 and a receiver hole (not shown) for phone calls. The external speaker hole 307 may be formed in a portion of the third surface 310C of the electronic device 300. In another embodiment, the external speaker hole 307 and the microphone hole 303 may be implemented as a single hole. Although not shown, the receiver hole (not shown) for phone calls may be formed in another portion of the third surface 310C. For example, the receiver hole for phone calls may be formed in another portion (e.g., facing the portion in the +y-axis direction) of the third surface 310C with the portion (e.g., facing the portion in the -y-axis direction) of the third surface 310C formed with the external speaker hole 307. According to various embodiments, the receiver hole for phone calls may not be formed in a portion of the third surface 310C, and may be formed by a separation space between the front plate 302 (or display 301) and the side frame structure 318.

[0092] The electronic device 300 may include at least one speaker (not shown) configured to output sound to the outside of the housing 310 through the external speaker hole 307 or a receiver hole (not shown) for a phone call. According to various embodiments, the speaker may include a piezoelectric speaker in which the speaker hole 307 is omitted.

[0093] The sensor module (not shown) may generate an electrical signal or a data value corresponding to an operation state inside the electronic device 300 or an environmental state outside the electronic device 300. 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, an atmospheric pressure sensor, a magnetic sensor, an acceleration sensor, a grip sensor, a color sensor, an infrared (IR) sensor, a biometric sensor, a temperature sensor, a humidity sensor, or an illumination sensor.

[0094] The camera modules 305 , 312 , and 313 may include a first camera module 305 (eg, a punch-hole camera) exposed on a first surface 310A of the electronic device 300 , a second camera module 312 exposed on a second surface 310B, and / or a flash 313 .

[0095] The first camera module 305 may be visually exposed through a portion of the screen display areas 310A and 310D of the display 301. For example, the first camera module 305 may be visually exposed on a partial area of ​​the screen display areas 310A and 310D through an opening (not shown) formed in a portion of the display 301. In another example, the first camera module 305 (e.g., an under-screen camera) may be provided on the rear surface of the display 301 and may not be visually exposed through the screen display areas 310A and 310D.

[0096] The second camera module 312 may include a plurality of cameras (eg, dual cameras, triple cameras, or quad cameras). However, the second camera module 312 is not necessarily limited to include a plurality of cameras, and may include one camera.

[0097] The first camera module 305 and the second camera module 312 may include one or more lenses, image sensors and / or image signal processors. The flash 313 may include, for example, a light emitting diode or a xenon lamp. In another embodiment, two or more lenses (IR camera lens, wide-angle lens, and telephoto lens) and image sensors may be disposed on one surface of the electronic device 300.

[0098] The key input device 317 may be provided on the third surface 310C (e.g., the first area 310D and / or the second area 310E) of the housing 310. In another embodiment, the electronic device 300 may not include all or some of the key input devices 317, and the key input devices 317 not included may be implemented in a different form on the display 301, such as a soft key. In another embodiment, the key input device may include a sensor module (not shown) forming a sensing area (not shown) included in the screen display areas 310A and 310D.

[0099] The connector hole 308 can accommodate a connector. The connector hole 308 can be disposed in the third surface 310C of the housing 310. For example, the connector hole 308 can be disposed in the third surface 310C so as to be adjacent to at least a portion of the audio module (e.g., the microphone hole 303 and the speaker hole 307). In another embodiment, the electronic device 300 may include a first connector hole 308 and / or a second connector hole (not shown), wherein the first connector hole 308 can accommodate a connector (e.g., a USB connector) for sending power and / or data to / receiving power and / or data from an external electronic device, and the second connector hole can accommodate a connector (e.g., a headphone jack) for sending audio signals to / receiving audio signals from an external electronic device.

[0100] The electronic device 300 may include a light emitting element (not shown). For example, the light emitting element (not shown) may be disposed on the first surface 310A of the housing 310. The light emitting element (not shown) may provide status information of the electronic device 300 in the form of light. In another embodiment, the light emitting element (not shown) may provide a light source that operates in conjunction with the operation of the first camera module 305. For example, the light emitting element (not shown) may include an LED, an IR LED, and / or a xenon lamp.

[0101] Reference Figure 3c , the electronic device 300 according to the embodiment may include a front panel 320 (eg, Figure 3a 302), a display 330 (e.g., Figure 3a 301), side members 340 (eg, Figure 3a side frame structure 318), printed circuit board 350, rear shell 360, battery 370, back plate 380 (for example, Figure 3b back panel 311) and an antenna (not shown).

[0102] In various embodiments, the electronic device 300 may not include at least one of the above-described components (eg, the rear case 360 ​​), or may additionally include other components. Figure 3c Some components of the electronic device 300 shown in FIG. Figure 3a and Figure 3b Some components of the electronic device 300 shown in FIG. 1 are the same or similar, and repeated description will be omitted hereinafter.

[0103] The front panel 320 and the display 330 may be coupled to the side member 340. For example, based on Figure 3c , the front plate 320 and the display 330 may be disposed below the side member 340. The front plate 320 and the display 330 may be located in the +z-axis direction from the side member 340. For example, the display 330 may be coupled to the bottom of the side member 340, and the front plate 320 may be coupled to the bottom of the display 330. The front plate 320 may form a portion of the outer surface (or exterior) of the electronic device 300. The display 330 may be disposed between the front plate 320 and the side member 340 so as to be located inside the electronic device 300.

[0104] The side member 340 may be disposed between the display 330 and the back plate 380. For example, the side member 340 may be configured to surround a space between the back plate 380 and the display 330.

[0105] The side member 340 may include a frame structure 341 and a plate structure 342, wherein the frame structure 341 forms a side surface (eg, Figure 3a The plate structure 342 extends inwardly from the frame structure 341 as a portion of the third surface 310C.

[0106] The plate structure 342 may be disposed inside the frame structure 341 so that the plate structure 342 is surrounded by the frame structure 341. The plate structure 342 may be connected to the frame structure 341, or may be formed integrally with the frame structure 341. The plate structure 342 may be formed of a metal material and / or a non-metallic (e.g., polymer) material. In an embodiment, the plate structure 342 may support other components included in the electronic device 300. For example, at least one of the display 330, the printed circuit board 350, the rear case 360, or the battery 370 may be disposed on the plate structure 342. For example, the display 330 may be coupled to one surface of the plate structure 342 (e.g., a surface facing the +z-axis direction), and the printed circuit board 350 may be coupled to an opposite surface facing away from the one surface (e.g., a surface facing the -z-axis direction).

[0107] The rear case 360 ​​may be disposed between the back plate 380 and the board structure 342. The rear case 360 ​​may be coupled to the side member 340 so as to overlap at least a portion of the printed circuit board 350. For example, the rear case 360 ​​may face the board structure 342 with the printed circuit board 350 located therebetween.

[0108] Processor (e.g. Figure 1 processor 120), memory (e.g., Figure 1Memory 130) and / or interfaces (e.g., Figure 1 The interface 177) may be mounted on the printed circuit board 350. 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, a volatile memory or a 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 300 to an external electronic device, and may include a USB connector, an SD card / MMC connector, or an audio connector.

[0109] Battery 370 (e.g., Figure 1 The battery 370 may provide power to at least one component of the electronic device 300. For example, the battery 370 may include a non-rechargeable primary battery, a rechargeable secondary battery, or a fuel cell. At least a portion of the battery 370 may be disposed on substantially the same plane as the printed circuit board 350. The battery 370 may be integrally disposed inside the electronic device 300, or may be disposed to be detachable from the electronic device 300.

[0110] Antenna (not shown) (e.g. Figure 1 The antenna module 197 of the back panel 380 may be provided between the back panel 380 and the battery 370. The antenna (not shown) may include, for example, a near field communication (NFC) antenna, a wireless charging antenna, and / or a magnetic secure transmission (MST) antenna. For example, the antenna (not shown) may perform short-range communication with an external device, or may wirelessly transmit and receive power required for charging.

[0111] The first camera module 305 may be disposed on at least a portion of the side member 340 (eg, the plate structure 342 ) so that the lens is visible through a portion of the front plate 320 (eg, Figure 3a The front surface 310A of the display 330 receives external light. For example, the lens of the first camera module 305 may be visually exposed through a partial area of ​​the front plate 320. A camera area 337 (eg, an opening area or a light-transmitting area) corresponding to the first camera module 305 may be formed in the display 330.

[0112] The second camera module 312 may be disposed on the printed circuit board 350 so that the lens is visible through the back plate 380 (eg, Figure 3b The camera area 384 of the rear surface 310B of the electronic device 300 receives external light. For example, the lens of the second camera module 312 is visually exposed through the camera area 384. In an embodiment, the second camera module 312 may be disposed in a housing (eg, Figure 3a and Figure 3bThe housing 310 may be disposed in at least a portion of an internal space of the housing 310 and may be electrically connected to the printed circuit board 350 through a connecting member (eg, a connector).

[0113] The camera area 384 may be formed on a surface of the back plate 380 (eg, Figure 3b In an embodiment, the camera region 384 may be formed to be at least partially transparent so that external light is incident on the lens of the second camera module 312. In an embodiment, at least a portion of the camera region 384 may protrude from the surface of the back plate 380 to a predetermined height. However, it is not necessarily limited thereto, and the camera region 384 may form a substantially same plane as the surface of the back plate 380.

[0114] Figure 4a is a front view of a camera module according to an embodiment. Figure 4b is a plan view of a camera module according to an embodiment.

[0115] Reference Figure 4a and Figure 4b , according to the camera module 400 of the embodiment (eg, Figure 3a and Figure 3c The first camera module 305 and Figure 3b and Figure 3c The second camera module 312 may include a camera housing 410, a lens assembly 420 (eg, Figure 2 lens assembly 210) and lens carrier 430.

[0116] In an embodiment, the camera housing 410 may include a cover 411 and a base 413. The cover 411 and the base 413 may be combined with each other to form a predetermined space to accommodate other parts of the camera module 400.

[0117] In an embodiment, the base 413 may support the lens assembly 420 and the lens carrier 430, and the cover 411 may be coupled to the base 413 to cover at least a portion of the lens assembly 420 and at least a portion of the lens carrier 430. The cover 411 may have an opening 4112 formed therein, and at least a portion of the lens assembly 420 is accommodated in the opening 4112. For example, the lens assembly 420 may pass through the opening 4112, and at least a portion of the lens assembly 420 may be exposed outside the camera housing 410. The cover 411 may perform a function of shielding electromagnetic interference (EMI). For example, the cover 411 may be formed of a metal material and may be referred to as a shielding cover (or EMI shielding cover).

[0118] In an embodiment, the lens assembly 420 may include a lens 421 and a lens barrel 423 accommodating the lens 421. For example, the lens barrel 423 may surround at least one lens 421. The lens barrel 423 may provide a function of supporting the lens 421 and protecting the lens 421 from external impact. At least a portion of the lens assembly 420 may be visually exposed to the outside of the camera housing 410 through the opening 4112 of the cover 411, and external light may be incident on the lens 421.

[0119] The lens assembly 420 may pass through the opening 4112 and may protrude to a predetermined height from the cover 411. However, the present disclosure is not limited to the illustrated embodiment, and according to various embodiments, the lens assembly 420 may be completely accommodated in the camera housing 410 and may be configured such that external light is incident through a light receiving area including the opening 4112 or transparent glass.

[0120] The lens assembly 420 may be accommodated in the camera housing 410 in a state of being coupled to the lens carrier 430. For example, the lens assembly 420 may be coupled to (or mounted on) the lens carrier 430, and may be configured to move together with at least a portion of the lens carrier 430 relative to the camera housing 410 in at least one direction (e.g., at least one of the x-axis direction, the y-axis direction, and the z-axis direction).

[0121] In an embodiment, the lens carrier 430 may be combined with the lens assembly 420, and may be disposed in the camera housing 410 so as to be movable. The lens carrier 430 may be configured so that at least a portion of the lens carrier 430 moves relative to the camera housing 410 in the direction of the optical axis OA or in a direction substantially perpendicular to or vertical to the optical axis OA. The lens carrier 430 may move the lens assembly 420 relative to the camera housing 410 (or an image sensor (not shown) fixed to the camera housing 410). For example, in a state in which at least a portion of the lens carrier 430 is accommodated in the camera housing 410, all and / or a portion of the lens carrier 430 may move relative to the camera housing 410 in the direction of the optical axis OA (e.g., the z-axis direction) or in a direction substantially perpendicular to or vertical to the optical axis OA (e.g., the x-axis direction and the y-axis direction), and the lens assembly 420 may move together with the lens carrier 430.

[0122] The camera module 400 according to an embodiment of the present disclosure may provide an auto focus (AF) function and an optical image stabilization (OIS) function by controlling the movement of the lens carrier 430. For example, the camera module 400 may perform an auto focus function by moving the lens carrier 460 in the direction of the optical axis OA. The camera module 400 may perform an optical image stabilization function (e.g., a camera shake correction function) by moving the lens carrier 440 in one or more directions substantially perpendicular to the optical axis OA.

[0123] Figure 5 is an exploded perspective view of a camera module according to an embodiment.

[0124] Reference Figure 5 , a camera module 400 according to an embodiment may include a camera housing 410 , a lens assembly 420 , a lens carrier 430 , a piezoelectric motor 500 , a motor holder 493 , a sensor assembly 491 , and a substrate member 492 .

[0125] Figure 5 At least some of the components of the camera module 400 shown in FIG. Figure 4a and Figure 4b Components of the camera module 400 shown in FIG. 4 are the same or similar, and repeated descriptions will be omitted hereinafter.

[0126] In an embodiment, the camera housing 410 may include a base 413, on which a lens carrier 430 is disposed, and a cover 411, which is combined with the base 413. Through the combination of the base 413 and the cover 411, the camera housing 410 may have an internal space formed therein, in which the lens carrier 430, the piezoelectric motor 500, the substrate member 492, and the lens assembly 420 are disposed. The cover 411 may have a first opening 4111 formed therein, through which the lens 421 is exposed to the outside of the camera housing 410.

[0127] In an embodiment, the base 413 may support the lens carrier 430, the piezoelectric motor holder 493, the substrate member 492, and the sensor assembly 491. The base 413 may include a first surface 415 (e.g., a surface facing the +z-axis direction) facing the lens assembly 420 and a second surface (not shown) (e.g., a surface facing the -z-axis direction) facing away from the first surface 415. The lens carrier 430 and the substrate member 492 may be disposed on the first surface 415 of the base 413, and the sensor assembly 491 may be disposed on the second surface.

[0128] The base 413 may include a sidewall part 416 that partially contacts the inner surface 4112 of the cover 411 when the base 413 is combined with the cover 411. For example, the sidewall part 416 may guide the combination of the base 413 and the cover 411. On the first surface 415 of the base 413, the sidewall part 416 may extend substantially vertically along the periphery of the first surface 415. The sidewall part 416 may support a portion of the substrate member 492.

[0129] The base 413 may have a second opening 417 formed therein. For example, the second opening 417 may be formed in a central area of ​​the base 413 and may penetrate from the first surface 415 to the second surface. The second opening 417 may be aligned with the lens assembly 420 and the image sensor 4911 relative to the optical axis OA. For example, the lens assembly 420, the second opening 417, and the image sensor 4911 may overlap each other in the direction of the optical axis OA. The lens assembly 420 and the image sensor 4911 may face each other through the second opening 417. For example, light passing through the lens assembly 420 may be incident or delivered to the image sensor 4911 through the second opening 417.

[0130] In an embodiment, the lens assembly 420 is coupled to the lens carrier 430. For example, the lens assembly 420 may be coupled to the first carrier 440 of the lens carrier 430 and may move together with the first carrier 440. The lens assembly 420 may be coupled to the first carrier 440 by at least partially inserting into the receiving hole 441 of the first carrier 440. The lens assembly 420 may include at least one lens 421 and a lens barrel 423 accommodating the lens 421. For example, the lens barrel 423 may be coupled to the first carrier 440 by inserting into the receiving hole 441 of the first carrier 440.

[0131] When the lens carrier 430 moves, the lens assembly 420 may move relative to the camera housing 410 and the sensor assembly 491. For example, when the lens assembly 420 moves in the direction of the optical axis OA (e.g., the z-axis direction), the distance between the lens 421 and the image sensor 4911 in the direction of the optical axis OA may change (e.g., AF function). When the lens assembly 420 moves in a direction substantially perpendicular to the optical axis OA, the position of the optical axis OA of the lens 421 relative to the image sensor 4911 may change (e.g., OIS function).

[0132] The lens carrier 430 may be configured to partially move in the direction of the optical axis OA and in one or more directions substantially perpendicular to the optical axis OA in the camera housing 410. The lens carrier 430 may be a component for moving the lens assembly 420 relative to the image sensor 4911, and the lens assembly 420 may move together with the lens carrier 430.

[0133] The lens carrier 430 may include a first carrier 440, a second carrier 450, a first guide member 460, and a second guide member 470. The lens carrier 430 may be configured such that the first carrier 440 may be movable in the direction of the optical axis OA, and the second carrier 450 may be movable in two directions (e.g., an x-axis direction and a y-axis direction) perpendicular to the optical axis OA through a connection structure between the first carrier 440, the second carrier 450, the first guide member 460, and the second guide member 470. The lens assembly 420 may be coupled to the first carrier 440.

[0134] In an embodiment, the first carrier 440 may be connected to the second carrier 450 so as to be movable in the direction of the optical axis OA. For example, the first carrier 440 may be connected to the second carrier 450, but may be movable in the direction of the optical axis OA relative to the second carrier 450. The second carrier 450 may be connected to the base 413 through the first guide member 460 and the second guide member 470 so as to be movable in two directions substantially perpendicular to the optical axis OA. For example, the second carrier 450 may be movable in a direction substantially perpendicular to the optical axis OA relative to the base 413. When the second carrier 450 moves in a direction substantially perpendicular to the optical axis OA, the first carrier 440 may move together with the second carrier 450. For example, the first carrier 440 may be referred to as an AF carrier that moves the lens in the direction of the optical axis OA, and the second carrier 450 may be referred to as an OIS carrier that moves the lens 421 in a direction substantially perpendicular to the optical axis OA. The first guide member 460 and the second guide member 470 may receive a driving force from the second piezoelectric motor 530, and may guide the moving direction of the second carrier 450. The connection structure among the first carrier 440 , the second carrier 450 , the first guide member 460 , and the second guide member 470 included in the lens carrier 430 will be described in more detail below.

[0135] In an embodiment, the piezoelectric motor 500 may generate a driving force for moving the lens assembly 420 in the direction of the optical axis OA and in a direction substantially perpendicular to the optical axis OA. The piezoelectric motor 500 may generate a driving force based on the vibration displacement of the piezoelectric element. The piezoelectric motor 500 may include a first piezoelectric motor 510 and a second piezoelectric motor 530, wherein the first piezoelectric motor 510 provides a driving force for moving the lens assembly 420 in the direction of the optical axis OA, and the second piezoelectric motor 530 provides a driving force for moving the lens assembly 420 in a direction substantially perpendicular to the optical axis OA.

[0136] The first piezoelectric motor 510 is configured to move the first carrier 440 in the direction of the optical axis OA. For example, the first piezoelectric motor 510 may be connected to the first carrier 440 and the second carrier 450, and the first carrier 440 may be moved relative to the second carrier 450 in the direction of the optical axis OA by a driving force transmitted from the first piezoelectric motor 510. The first piezoelectric motor 510 may be referred to as an AF motor or an AF actuator for an AF function.

[0137] In an embodiment, the second piezoelectric motor 530 is configured to move the second carrier 450 in two directions (e.g., the x-axis direction and the y-axis direction) substantially perpendicular to the optical axis OA. The second piezoelectric motor 530 may include a first sub-piezoelectric motor 530-1 and a second sub-piezoelectric motor 530-2 for moving the second carrier 450 in two displacement axis directions perpendicular to each other. For example, the first sub-piezoelectric motor 530-1 may generate a driving force for moving the second carrier 450 in the x-axis direction, and the second sub-piezoelectric motor 530-2 may generate a driving force for moving the second carrier 450 in the y-axis direction. The second piezoelectric motor 530 may be referred to as an OIS motor or an OIS actuator for an OIS function.

[0138] The second piezoelectric motor 530 may transmit the driving force to the second carrier 450 through the guide members 460 and 470. For example, the first sub-piezoelectric motor 530-1 may be connected to the base 413 and the first guide member 460, and the second carrier 450 may be moved in the x-axis direction relative to the base 413 by the driving force transmitted via the first guide member 460. For example, the second sub-piezoelectric motor 530-2 may be connected to the base 413 and the second guide member 470, and the second carrier 450 may be moved in the y-axis direction relative to the base 413 by the driving force transmitted via the second guide member 470. The second piezoelectric motor 530 may be indirectly connected to the base 413 through the motor holder 493.

[0139] In an embodiment, the motor holder 493 may support the second piezoelectric motor 530. For example, the motor holder 493 may include a first motor holder 493-1 supporting the first sub-piezoelectric motor 530-1 and a second motor holder 493-2 supporting the second sub-piezoelectric motor 530-2. The motor holder 493 may be fixedly disposed on the base 413, and the second piezoelectric motor 530 may be connected to the motor holder 493. For example, when the second piezoelectric motor 530 is connected to the motor holder 493, the position of the second piezoelectric motor 530 on the base 413 may be fixed in a state where the operation of the second piezoelectric motor 530 can be performed. When the second piezoelectric motor 530 is supported on the motor holder 493, the movement and / or separation of the second piezoelectric motor 530 in the z-axis direction may be restricted.

[0140] In an embodiment, the sensor assembly 491 may be fixed to the camera housing 410. For example, the sensor assembly 491 may be fixedly disposed on the second surface of the base 413. When the lens assembly 420 moves, the sensor assembly 491 may remain fixed to the camera housing 410, and the position of the sensor assembly 491 relative to the lens assembly 420 may change accordingly.

[0141] The sensor assembly 491 may include a circuit board 4912 and an image sensor 4911, wherein the circuit board 4912 is fixedly disposed on the base 413, and the image sensor 4911 is disposed on one surface (e.g., a surface facing the +z-axis direction) of the circuit board 4912 to face the lens assembly 420. According to various embodiments, the image sensor assembly 491 may further include a filter (e.g., an infrared filter) disposed to cover the image sensor 4911.

[0142] In an embodiment, the circuit board 4912 may be fixedly disposed on the second surface (eg, the surface facing the −z axis direction) of the base 413. The circuit board 4912 may be connected to an electronic device (eg, Figure 3a , Figure 3b and Figure 3c The main board of the electronic device 300 (eg, Figure 3c The image sensor 4911 may be arranged on the circuit board 4912 so as to be aligned with the optical axis OA. The image sensor 4911 may overlap with the second opening 417 of the base 413 in the direction of the optical axis OA, and may face the lens 421 of the lens assembly 420 through the second opening 417. The image sensor 4911 may be electrically connected to the circuit board 4912. The image sensor may receive light passing through the lens 421, and may be configured to generate an electrical signal based on the received light signal.

[0143] In an embodiment, a substrate member 492 may be disposed on the base 413. A portion of the substrate member 492 may be electrically connected to the piezoelectric motor 500 so as to send an electrical signal to the piezoelectric motor 500. The substrate member 492 may be electrically connected to the mainboard 350 of the electronic device 300 through a connecting member (not shown). For example, the substrate member 492 may include a printed circuit board (PCB), a flexible printed circuit board (FPCB), or a rigid-flexible printed circuit board (RFPCB). An opening area corresponding to the second opening 417 of the base 413 may be formed in the substrate member 492.

[0144] Figure 6 is a view showing a lens carrier and a first piezoelectric motor of a camera module according to an embodiment. Figure 7 2 is a view showing a first carrier, a second carrier, and a first piezoelectric motor of a camera module according to an embodiment.

[0145] Reference Figure 6 and Figure 7 , according to the camera module of the embodiment (eg, Figure 4a , Figure 4b and Figure 5 The camera module 400 of the embodiment may include a first guide member 460, a second carrier 450 disposed on the first guide member 460, a first carrier 440 disposed on the second carrier 450, a second guide member 470 disposed on the second carrier 450, and a first piezoelectric motor 510 connected to the first carrier 440 and the second carrier 450. For example, the lens carrier 430 may be provided with a structure in which the first carrier 440, the second carrier 450, the first guide member 460 and the second guide member 470 are connected to each other so as to be movable relative to each other as a whole or individually. Each of the second carrier 450 and the first guide member 460 may have an opening area formed therein to be aligned with the receiving hole 441 of the first carrier 440 and the base (e.g., Figure 5 The second opening of the base 413) (eg, Figure 5 overlaps with the second opening 417).

[0146] In an embodiment, the lens carrier 430 may be configured such that the first carrier 440 moves relative to the camera housing 410 in the direction of the optical axis OA, and the second carrier 450 moves relative to the camera housing 410 in the direction of the first shift axis S1 and the direction of the second shift axis S2 substantially perpendicular to the optical axis OA. Thus, the lens carrier 430 may move the lens assembly (e.g., Figure 5 lens assembly 420).

[0147] In an embodiment, the movement of the second carrier 450 in the direction of the first displacement axis S1 and the direction of the second displacement axis S2 may be guided by the first guide member 460 and the second guide member 470. For example, the movement of the second carrier 450 in the direction of the first displacement axis S1 relative to the first guide member 460 may be restricted, and the second carrier 450 may be movable in the direction of the second displacement axis S2. The movement of the second carrier 450 in the direction of the second displacement axis S2 relative to the second guide member 470 may be restricted, and the second carrier 450 may be movable in the direction of the first displacement axis S1. Fig.13 and Fig.14 A connection structure between the first guide member 460 , the second carrier 450 , and the second guide member 470 is described in detail.

[0148] In an embodiment, the first carrier 440 may be disposed on the second carrier 450. For example, the first carrier 440 may be placed on the first upper surface 450a of the second carrier 450. When the second carrier 450 moves, the first carrier 440 may move together with the second carrier 450. For example, when the second carrier 450 moves in the directions of the shift axis S1 and the shift axis S2, the first carrier 440 may move together with the second carrier 450 in the directions of the shift axis S1 and the shift axis S2. The camera module 400 according to an embodiment of the present disclosure may provide an AF function when the first carrier 440 (having the lens assembly 420 coupled thereto) moves in the direction of the optical axis OA relative to the second carrier 450, and may provide an OIS function when the first carrier 440 (having the lens assembly 420 coupled thereto) moves together with the second carrier 450 in the directions of the shift axis S1 and the shift axis S2 relative to the camera housing 410.

[0149] The first carrier 440 may be connected to the second carrier 450 so as to be movable in the direction of the optical axis OA. For example, the first carrier 440 may be connected to the second carrier 450, but may be movable relative to the second carrier 450 in the direction of the optical axis OA. The movement of the first carrier 440 relative to the second carrier 450 in the directions of the displacement axis S1 and the displacement axis S2 may be limited, but the first carrier 440 may be movable in the direction of the optical axis OA. A support member 451 for guiding the movement of the first carrier 440 in the direction of the optical axis OA may be formed on the first upper surface 450a of the second carrier 450. For example, the support member 451 may extend from the first upper surface 450a of the second carrier 450 in a direction substantially perpendicular to the first upper surface 450a (e.g., the first optical axis direction ①). In the illustrated embodiment, the support member 451 may include a first support member 451-1 and a second support member 451-2, wherein the first support member 451-1 and the second support member 451-2 are formed on corner portions of the second carrier 450 that are opposite to each other. However, the illustrated embodiment is exemplary, and the number and / or positions of the support members 451 may be variously changed without being limited to the illustrated embodiment.

[0150] The first carrier 440 can move relative to the second carrier 450 in the direction of the optical axis OA through a first ball guide structure, wherein the first ball guide structure includes a plurality of first balls (eg, Figure 8A plurality of first balls 481 for guiding the movement of the first carrier 440 may be disposed between a portion of the first carrier 440 and a portion of the second carrier 450. For example, the second carrier 450 may have a first groove 451a for accommodating a plurality of first balls 481 on the support member 451, and the first carrier 440 may have a second groove 445 facing the first groove 451a on a partial area of ​​a side surface (e.g., a surface facing a direction perpendicular to the optical axis OA). The first groove 451a and the second groove 445 may extend in the direction of the optical axis OA. The first groove 451a and the second groove 445 may be disposed to face each other to form or define a space for accommodating the plurality of first balls 481. For example, the plurality of first balls 481 may be arranged between the first groove 451a and the second groove 445 in the direction of the optical axis OA. The plurality of first balls 481 may be accommodated in the space between the first groove 451a and the second groove 445 so as to be rotatable. For example, when the first carrier 440 moves in the direction of the optical axis OA relative to the second carrier 450 , the plurality of first balls 481 may perform a rotational motion or a rolling motion between the first grooves 451 a and the second grooves 445 .

[0151] A ball guide structure may be used to ensure stability in the movement of the optical axis of the AF carrier, and a preload may be applied by a spring to ensure a stable fit on the ball guide structure.

[0152] The moving distance of the first carrier 440 relative to the second carrier 450 in the direction of the optical axis OA may be limited by a stopper structure (e.g., a first stopper 452 and a second stopper 444). For example, the second carrier 450 may include a first stopper 452 disposed on the first upper surface 450a, and the first carrier 440 may include a second stopper 444 disposed between the first stopper 452 and the first upper surface 450a. When the first carrier 440 moves relative to the second carrier 450 in the direction of the optical axis OA (e.g., the first optical axis direction ①), when the first stopper 452 and the second stopper 444 contact each other, the moving distance of the first carrier 440 in the direction of the optical axis OA may be limited to a specified range. In addition, the first stopper 452 and the second stopper 444 may prevent the first carrier 440 from being separated from the second carrier 450 in the direction of the optical axis OA.

[0153] The first carrier 440 may apply a predetermined preload to the second carrier 450 through a first spring member (or elastic member) 494. The elastic member may be any element capable of elastic deformation. Specifically, the elastic member may be made of metal. The elastic member may be a spring member. The first spring member 494 may be coupled to at least a portion of the side surface 442 of the first carrier 440. The first spring member 494 may be configured so that the opposite ends face the third groove 451b formed on the support part 451, and the central portion between the opposite ends is coupled to the side surface of the first carrier 440. The first carrier 440 may have a plurality of coupling protrusions 443 on a partial area of ​​the side surface of the first carrier 440, wherein the first spring member 494 is coupled to the plurality of coupling protrusions 443. For example, a portion of the central portion of the first spring member 494 may be coupled to and supported on the plurality of coupling protrusions 443. The first spring member 494 may have a ball receiving recess 494r on the opposite ends of the first spring member 494, wherein the second ball (e.g., Figure 8 The second ball 482 of the first spring member 494 is accommodated in the ball receiving recess 494r. For example, the ball receiving recess 494r of the first spring member 494 may face the third groove 451b of the support member 451, and the second ball 482 may be disposed between the ball receiving recess 494r and the third groove 451b. Figure 8 The structure in which the preload is applied between the first carrier 440 and the second carrier 450 by the first spring member 494 is described in detail.

[0154] In an embodiment, the second carrier 450 may include a support member 451 and a motor support member 453, wherein the support member 451 has a ball guide structure formed thereon, and the first piezoelectric motor 510 is disposed on the motor support member 453. The support member 451 and the motor support member 453 may extend from the first upper surface 450a of the second carrier 450 in the first optical axis direction ①.

[0155] In an embodiment, the support part 451 may be disposed between the side surface of the first carrier 440 and the first spring member 494. The first groove 451a and the third groove 451b may be formed on the support part 451. For example, the first groove 451a may be formed on a first surface of the support part 451 facing the first carrier 440, and the third groove 451b may be formed on a second surface (e.g., a surface facing away from the first surface) of the end of the support part 451 facing the first spring member 494. The first groove 451a and the third groove 451b may extend a predetermined length in the direction of the optical axis OA.

[0156] In an embodiment, the motor support part 453 may be formed on a corner portion of the second carrier 450. For example, the motor support part 453 may be formed on one of the corner portions where the support part 451 is not formed among the four corner portions of the second carrier 450. At least a portion of the first piezoelectric motor 510 may be coupled to the motor support part 453. Fig.12 The structure in which the first piezoelectric motor 510 is coupled to the motor supporting member 453 is described in detail.

[0157] In an embodiment, the first piezoelectric motor 510 may provide a driving force for moving the first carrier 440 in the direction of the optical axis OA. For example, the first piezoelectric motor 510 may generate a driving force based on a change in the shape of the piezoelectric ceramic according to the application of a voltage. The first carrier 440 may be moved in the first optical axis direction ① or the second optical axis direction ② by the first piezoelectric motor 510. In various embodiments, the first piezoelectric motor 510 may be referred to as a piezoelectric linear actuator or an ultrasonic linear actuator.

[0158] The first piezoelectric motor 510 may be connected to the first carrier 440 and the second carrier 450, and may be configured to move the first carrier 440 relative to the second carrier 450 in the direction of the optical axis OA. The first piezoelectric motor 510 may include a first piezoelectric element 511, an elastic body 512, a first rod 513, and a first connecting member 514. When a portion of the elastic body 512 is coupled to the motor support part 453 of the second carrier 450, and a first fixing portion 514c of the first connecting member 514 is coupled to the first carrier 440, the first piezoelectric motor 510 may be connected to the first carrier 440 and the second carrier 450. For example, the first piezoelectric motor 510 may be connected to the first carrier 440 in a state of being supported on the motor support part 453. The first piezoelectric motor 510 may generate a driving force based on the vibration displacement of the first piezoelectric element 511 and the elastic body 512. For example, the first piezoelectric motor 510 may generate vibration displacement in a state where the elastic body 512 is supported on the motor support part 453, and the vibration displacement may be transmitted to the first carrier 440 through the first rod 513 and the first connecting member 514. Figure 9a , Figure 9b , Fig.9c and Fig.10 The components and operation of the first piezoelectric motor 510 are described in detail.

[0159] Figure 8 is a view illustrating a first carrier, a second carrier, and a first spring member of a camera module according to an embodiment.

[0160] Figure 8 Can be referred to as viewed from above (e.g., in the +z direction) Figure 6 440, the second carrier 450 and the first spring member 494 are shown in FIG. Figure 8 It is omitted Figure 6 FIG. 4 is a view of the first guide member 460 and the second guide member 470 .

[0161] In the following, we will refer to Figure 6 and Figure 8 A preload structure between the first carrier 440 and the second carrier 450 provided by the first spring member 494 is described.

[0162] Reference Figure 6 and Figure 8 , according to the camera module of the embodiment (eg, Figure 4a , Figure 4b and Figure 5 The camera module 400 may include a first spring member 494, and a preload structure or a tension structure may be provided or applied between the first carrier 440 and the second carrier 450 accordingly.

[0163] In an embodiment, the first spring member 494 may be formed to have elastic force. For example, the first spring member 494 may be a spring having a thin plate shape (e.g., a leaf spring), and may elastically fix the first carrier 440 and the second carrier 450. For example, because a portion of the first spring member 494 is fixed to the first carrier 440 and another portion of the first spring member 494 applies elastic force to the second carrier 450 supporting the first carrier 440, the first spring member 494 may elastically fasten the first carrier 440 and the second carrier 450. In various embodiments, the first spring member 494 may be formed of a leaf spring of a metal material, but is not limited thereto.

[0164] In an embodiment, the first spring member 494 may include a first portion 494a, a second portion 494b, and a third portion 494c, wherein the first portion 494a is coupled to a side surface of the first carrier 440, the second portion 494b extends from one end of the first portion 494a and partially faces the first support part 451-1 of the second carrier 450, and the third portion 494c extends from an opposite end of the first portion 494a and partially faces the second support part 451-2 of the second carrier 450. For example, the first spring member 494 may be formed in a shape in which the first portion 494a, the second portion 494b, and the third portion 494c are partially bent along the side surface of the first carrier 440. The first spring member 494 may be formed in a shape corresponding to the first carrier 440.

[0165] In an embodiment, the first portion 494a of the first spring member 494 may be fixedly coupled to a side surface of the first carrier 440. At least a portion of the first portion 494a may be assembled into the first carrier 440 by a coupling protrusion 443 of the first carrier 440. For example, the first portion 494a may be partially bent to extend from a side surface of the first carrier 440 facing the +x-axis direction to a side surface of the first carrier 440 facing the -y-axis direction. In various embodiments, the first portion 494a may be attached to the side surface of the first carrier 440 by various adhesion means.

[0166] In an embodiment, the second portion 494b of the first spring member 494 may be extended from one side of the first portion 494a (eg, based on Figure 8 The second portion 494b may extend from the first portion 494a toward the first support member 451-1. The second portion 494b may form or define one end of the first spring member 494. For example, one end of the first spring member 494 may be defined as the end of the second portion 494b. A ball receiving recess 494r for accommodating the second ball 482 may be formed on the second portion 494b. For example, the ball receiving recess 494r of the second portion 494b may face the third groove 451b of the first support member 451-1. The second ball 482 may be accommodated in the space between the third groove 451b of the first support member 451-1 and the ball receiving recess 494r of the second portion 494b so as to be rotatable.

[0167] The second portion 494b of the first spring member 494 may overlap the first support part 451-1 and the first groove 451a of the first carrier 440 in the direction of the first displacement axis S1 substantially perpendicular to the optical axis OA. For example, the second portion 494b may overlap the first groove 451a and the third groove 451b formed on the first support part 451-1 and the second groove 445 formed on the first carrier 440 in the direction of the first displacement axis S1. The second portion 494b may apply a preload P1 in a direction toward the first support part 451-1. When the preload P1 is applied by the second portion 494b, the first ball 481 or the second ball 482 may be stably seated in the first groove 451a and the second groove 445 or the third groove 451b and the ball receiving recess 494r, and the movement of the first ball 481 or the second ball 482 in a direction other than the extending direction of the first groove 451a, the second groove 445, and the third groove 451b (for example, the direction of the optical axis OA) may be prevented or reduced.

[0168] The second portion 494b of the first spring member 494 may elastically press the second ball 482 accommodated in the third groove 451b of the first support member 451-1 in a state where the first support member 451-1 of the second carrier 450 is located between the second portion 494b and the first groove 451a of the first carrier 440 while overlapping the first groove 451a in the direction of the first displacement axis S1. Due to the preload P1 applied by the second portion 494b, the first support member 451-1 may contact the first ball 481 and the second ball 482 by a predetermined pressing force facing the direction of the first displacement axis S1. Therefore, the movement in the direction of the second displacement axis S2 between the first carrier 440 and the second carrier 450 may be restricted or prevented.

[0169] In an embodiment, the third portion 494c of the first spring member 494 can be extended from an opposite side of the first portion 494a (eg, based on Figure 8 The third portion 494c may extend from the first portion 494a toward the second support member 451-2, and may be spaced apart from the side surface of the first carrier 440. For example, the third portion 494c may extend from the first portion 494a toward the second support member 451-2. The third portion 494c may form or define the opposite end of the first spring member 494. For example, the opposite end of the first spring member 494 may be defined as the end of the third portion 494c. A ball receiving recess 494r for accommodating the second ball 482 may be formed on the third portion 494c. For example, the ball receiving recess 494r of the third portion 494c may face the third groove 451b of the second support member 451-2. The second ball 482 may be accommodated in the space between the third groove 451b of the second support member 451-2 and the ball receiving recess 494r of the third portion 494c so as to be able to rotate. The third portion 494c may apply a preload P2 in the direction toward the second support member 451-2.

[0170] The third portion 494c of the first spring member 494 may overlap the second support part 451-2 and the first groove 451a of the first carrier 440 in the direction of the second displacement axis S2 substantially perpendicular to the optical axis OA. For example, the third portion 494c may overlap the first groove 451a and the third groove 451b formed on the second support part 451-2 and the second groove 455 formed on the first carrier 440 in the direction of the second displacement axis S2. The third portion 494c may apply a preload P2 in a direction toward the second support part 451-2. When a preload P2 is applied in the direction toward portion 494c, the first ball 481 or the second ball 482 can be stably positioned in the first groove 451a and the second groove 445 or in the third groove 451b and the ball receiving recess 494r, and movement of the first ball 481 or the second ball 482 in directions other than the extension direction of the first groove 451a, the second groove 445 and the third groove 451b (for example, the direction of the optical axis OA) can be prevented or reduced.

[0171] The third portion 494c of the first spring member 494 may elastically press the second ball 482 accommodated in the third groove 451b of the second support member 451-2 in a state where the second support member 451-2 of the second carrier 450 is located between the third portion 494c and the first groove 451a of the first carrier 440 while overlapping the first groove 451a in the direction of the second displacement axis S2. Due to the preload P2 applied by the third portion 494c, the second support member 451-2 may contact the first ball 481 and the second ball 482 by a predetermined pressing force facing the direction of the second displacement axis S2. Therefore, the movement in the direction of the first displacement axis S1 between the first carrier 440 and the second carrier 450 may be restricted or prevented.

[0172] When the preload structure is applied by the first spring member 494, the camera module 400 according to the embodiment of the present disclosure can ensure the stability of the ball guide structures 481 and 482 that guide the movement of the first carrier 440 relative to the second carrier 450 in the direction of the optical axis OA. In addition, the first spring member 494 can prevent the first carrier 440 from tilting relative to the second carrier 450 (for example, rotational movement around an axis perpendicular to the optical axis OA), thereby stably maintaining the state in which the first rod 513 of the first piezoelectric motor 510 is aligned with the axis of the ball guide structure. In addition, the first spring member 494 can prevent or reduce the movement of the first carrier 440 relative to the second carrier 450 in the directions of the displacement axis S1 and the displacement axis S2 substantially perpendicular to the optical axis OA.

[0173] Figure 9a is a view showing a first piezoelectric motor of a camera module according to an embodiment. Figure 9b is a view showing a first piezoelectric motor of a camera module according to an embodiment. Fig.9c 2 is a view showing a piezoelectric element and an elastic body of a first piezoelectric motor according to an embodiment.

[0174] Figure 9a is a perspective view of the first piezoelectric motor, Figure 9b yes Figure 9a A plan view of the first piezoelectric motor as viewed along direction B.

[0175] Reference Figure 9a , Figure 9b and Fig.9c , according to the camera module of the embodiment (eg, Figure 4a , Figure 4b and Figure 5 The first piezoelectric motor 510 of the camera module 400 may include a first piezoelectric element 511, an elastic body 512, a first rod 513, and a first connecting member 514. For example, the first piezoelectric element 511, the elastic body 512, and the first rod 513 may be sequentially combined in the optical axis directions ① and ②, and the first connecting member 514 may be combined to the first rod 513 so as to slide in the optical axis directions ① and ②.

[0176] In an embodiment, when a voltage is applied to the first piezoelectric element 511, mechanical displacement or deformation, such as expansion or contraction, may occur according to the polarization direction of the first piezoelectric element 511 and the direction of the electric field. For example, when a voltage is applied to the first piezoelectric element 511, the first piezoelectric element 511 may be deformed. The first piezoelectric element 511 may be formed by using various piezoelectric elements including piezoelectric ceramics, piezoelectric polymers, or piezoelectric composite materials. For example, the first piezoelectric element 511 may be a piezoelectric ceramic based on lead zirconate titanate (PZT), but is not limited thereto.

[0177] The first piezoelectric element 511 may be disposed on one surface of the elastomer 512. For example, the first piezoelectric element 511 may be attached to an upper surface 5153 (e.g., a surface facing the first optical axis direction ①) of the elastomer 512. The first piezoelectric element 511 may have a plate shape having a specified thickness and / or length (e.g., a distance in the long side direction). For example, the length of the first piezoelectric element 511 may be less than the length of the elastomer 512. According to various embodiments, the first piezoelectric element 511 may include a bulk type piezoelectric element formed by a layer having a predetermined thickness and / or a stacked type piezoelectric element formed by a plurality of layers stacked on each other. The type of the first piezoelectric element 511 is not limited to the above examples.

[0178] The first piezoelectric element 511 may include a first surface 5111 and a second surface 5112, wherein the first surface 5111 faces the first optical axis direction ①, and the second surface 5112 faces away from the first surface 5111 and, for example, faces the second optical axis direction ②. The second surface 5112 of the first piezoelectric element 511 may be attached to the elastomer 5112. For example, since the elastomer 512 is attached to the second surface 5112, the first piezoelectric element 511 may bend together with the elastomer 512 when expanding or contracting due to the difference in rigidity between the first surface 5111 (e.g., a non-attached surface) and the second surface 5112 (e.g., an attached surface). Fig.10 The bending deformation of the first piezoelectric element 511 and the elastic body 512 will be described.

[0179] In an embodiment, the elastic body 512 may be formed of a material having a predetermined elasticity. For example, the elastic body 512 may be formed of an elastic material that can be locally bent by deformation of the first piezoelectric element 511. In various embodiments, the elastic body 512 may be a metal elastic body, but is not limited thereto.

[0180] The first piezoelectric element 511 may be attached to an upper surface 5153 of the elastic body 512, and the first rod 513 may be coupled to a lower surface 5154 of the elastic body 512. The upper surface 5153 of the elastic body 512 may face the first optical axis direction ①, and the lower surface 5154 may face the second optical axis direction ②. By providing a rigidity difference to the first surface 5111 and the second surface 5112 of the first piezoelectric element 511, the elastic body 512 may convert the contraction / expansion of the first piezoelectric element 511 into a bending deformation. For example, when the first piezoelectric element 511 expands or contracts based on a voltage applied thereto, the elastic body 512 may bend convexly in the first optical axis direction ① together with the first piezoelectric element 511, or may bend convexly in the second optical axis direction ② while vibrating in the optical axis OA direction.

[0181] The elastic body 512 may include a base portion 515, an extension portion 516, and a protrusion portion 517. The first piezoelectric element 511 may be disposed on the base portion 515. For example, the base portion 515 may include an upper surface 5153 and a lower surface 5154 facing away from the upper surface 5153, wherein the first piezoelectric element 511 is attached to the upper surface 5153, and the first rod 513 is attached to the lower surface 5154. The extension portion 516 and the protrusion portion 517 may extend or protrude from the base portion 515.

[0182] In an embodiment, the extension portion 516 may be formed at opposite ends of the base portion 515 that face away from each other in the direction of the length L. The extension portion 516 may extend from the opposite ends of the base portion 515 in the direction of the length L, and may have a greater thickness than the base portion 515. For example, the thickness of the extension portion 516 may be greater than the thickness T of the base portion 515. The thickness is defined as the distance measured in the optical axis directions ① and ②.

[0183] The extension portion 516 can increase the vibration displacement of the first piezoelectric motor 510. The extension portion 516 can be used as a vibration displacement expansion structure. For example, the extension portion 516 can increase the volume (or mass) of the opposite ends of the elastomer 512 that are opposite to each other in the lengthwise direction, and therefore, the inertial effect can be used to increase the vibration displacement or bending displacement of the elastomer 512 (or the first piezoelectric element 511) when the elastomer 512 vibrates. For example, due to the inertial force depending on the weight of the extension portion 516, the vibration of the opposite ends of the elastomer 512 can have a higher amplitude in the direction of the optical axis OA. Since the extension portion 516 extends from the base portion 515, the elastomer 512 can also be constructed to include a displacement expansion structure integrally. The size of the extension portion 516 can be variously modified according to design conditions.

[0184] In an embodiment, the protrusion portion 517 may be formed at opposite ends of the base portion 515 facing away from each other in the direction of the width W. The protrusion portion 517 may protrude from opposite ends of the base portion 515 facing away from each other in the direction of the width W. For example, the protrusion portion 517 may protrude from opposite surfaces 5151, 5152 of the base portion 515 facing away from each other in the direction of the width W and may be substantially parallel to the base portion 515. The protrusion 517 may have substantially the same thickness as the base portion 515, but is not limited thereto.

[0185] The protrusion 517 may be located between the pair of extension portions 516. The protrusions 517 may be formed symmetrically with respect to the first rod 513. The base portion 515 may include a first side surface 5151 and a second side surface 5152 that are opposite to each other in the direction of the width W, and the protrusion 517 may be formed on the first side surface 5151 and the second side surface 5152. For example, the protrusion 517 may include a pair of first protrusions 518 and a pair of second protrusions 519, wherein the pair of first protrusions 518 protrude from the first side surface 5151 and the second side surface 5152 and are formed at positions symmetrical to each other with reference to the direction of the length L of the base portion 515, and the pair of second protrusions 519 protrude from the first side surface 5151 and the second side surface 5152 so as to be spaced apart from the pair of first protrusions 518 by a predetermined distance and are formed at positions symmetrical to each other with reference to the direction of the length L of the base portion 515.

[0186] The pair of first protrusion portions 518 may include a first protrusion 518a formed on the first side surface 5151, and a second protrusion 518b formed on the second side surface 5152. The first protrusion 518a and the second protrusion 518b may be formed at positions corresponding to each other on the first surface 5151 and the second side surface 5152 so as to be aligned with each other in the direction of the width W of the base portion 515. For example, the first protrusion 518a and the second protrusion 518b may overlap each other based on the direction of the width W of the base portion 515. The pair of second protrusion portions 519 may include a third protrusion 519a and a fourth protrusion 519b, wherein the third protrusion 519a is formed on the first side surface 5151 and is spaced apart from the first protrusion 518a by a predetermined distance in the direction of the length L, and the fourth protrusion 519b is formed on the second side surface 5152 and is spaced apart from the second protrusion 518b by a predetermined distance in the direction of the length L. The third protrusion 519a and the fourth protrusion 519b may be formed at positions corresponding to each other on the first side surface 5151 and the second side surface 5152 so as to be aligned with each other in the width W direction of the base portion 515. For example, the third protrusion 519a and the fourth protrusion 519b may overlap with each other based on the direction of the width W of the base portion 515. The spacing distance between the first protrusion 518a and the second protrusion 518b may be substantially the same as the spacing distance between the third protrusion 519a and the fourth protrusion 519b.

[0187] The protrusion 517 may be located between the extensions 516. The protrusion 517 may be formed symmetrically with respect to the width W direction and the length L direction of the base portion 515. The pair of first protrusions 518 and the pair of second protrusions 519 may be spaced apart from the first rod 513 by substantially the same distance in the direction of the length L. The pair of first protrusions 518 formed at one end of the base portion 515 and the extension 516 (e.g., Fig.9c The distance between the right side extension portion in the base portion 515 and the pair of second protrusion portions 519 and the extension portion 516 (for example, Fig.9c The distance between the left extension in the figure is basically the same.

[0188] The protrusion 517 may be a portion supported on the second carrier 450. The protrusion 517 may be formed at a position corresponding to a portion having a minimum vibration displacement when the first piezoelectric motor 510 vibrates. Therefore, the transmission of vibration to other components of the camera module 400 may be reduced. For example, the protrusion 517 may be used as a vibration isolation structure as well as a support structure. Since the protrusion 517 extends from the base portion 515, the elastic body 515 may also be constructed to include a vibration isolation structure as a whole. Fig.11 and Fig.12 The position of the protruding portion 517 will be described.

[0189] In an embodiment, the first rod 513 may be disposed on one surface of the elastic body 512. For example, the first rod 513 may be coupled to a lower surface 5154 of the elastic body 512 facing the second optical axis direction ②. The first rod 513 may be coupled to a central portion of the lower surface 5154 of the elastic body 512. For example, the first rod 513 may be disposed at the center of the width W direction and the length L direction of the base portion 515. The first rod 513 may move in the first optical axis direction ① and the second optical axis direction ② according to the bending vibration of the first piezoelectric element 511 and the elastic body 512.

[0190] The first rod 513 may extend in a direction substantially perpendicular to the first piezoelectric element 511. The first rod 513 may extend so as to be substantially perpendicular to the lower surface 5154 of the base portion 515. For example, the first rod 513 may be formed in a cylindrical shape, and the length of the first rod 513 may be kept constant. The first rod 513 may be formed of a carbon-based material. For example, the first rod 513 may be formed of a carbon fiber reinforced plastic (CFRP) material. However, the shape or material of the first rod 513 is not limited to the above.

[0191] The first rod 513 may provide a first carrier (eg, Figure 6 and Figure 7 The first rod 513 may be at least partially coupled to the first connecting member 514 in a state of being attached to the elastic body 512. The first rod 513 is capable of performing an operation of moving together with the first connecting member 514 and an operation of moving separately from the first connecting member 514. For example, the first rod 513 may be connected to the first connecting member 514 so as to perform an operation of moving together with the first connecting member 514 and an operation of moving relative to the first connecting member 514 based on a moving speed. The moving speed of the first rod 513 may be determined and controlled based on a speed at which the first piezoelectric element 511 contracts or expands.

[0192] In an embodiment, the first connection member 514 may be coupled to the first rod 513 of the first piezoelectric motor 510. For example, the first connection member 514 may be coupled to the first rod 513 to move together with the first rod 513 or move separately from the first rod 513 based on friction or inertial force. For example, a portion of the first connection member 514 may be coupled to the first rod 513 by elastically pressure-contacting the first rod 513, and another portion of the first connection member 514 may be fixedly coupled to the first carrier 440. The first carrier 440 may move together with the first connection member 514. The first connection member 514 may transmit the driving force of the first piezoelectric motor 510 to the first carrier 440.

[0193] The first connecting member 514 may include a first main body portion 514a, a plurality of first pressing portions 514b connected to one side of the first main body portion 514a, and a first fixing portion 514c connected to the opposite side of the first main body portion 514a. For example, the first main body portion 514a may be formed by an injection material, and a plurality of first pressing portions 514b and a first fixing portion 514c may be formed by a metal material. However, the present disclosure is not limited thereto. In various embodiments, the first connecting member 514 may be formed or manufactured by an insert molding (or insert injection) process so that the first main body portion 514a, a plurality of first pressing portions 514b and a first fixing portion 514c are formed integrally. However, the manufacturing process of the first connecting member 514 is not limited to insert molding.

[0194] In an embodiment, the first body portion 514a may support a plurality of first pressing portions 514b and a first fixing portion 514c. For example, a plurality of first pressing portions 514b elastically connected to the first rod 513 and a first fixing portion 514c fixedly connected to the first carrier 440 may be coupled to opposite sides of the first body portion 514a.

[0195] In an embodiment, the plurality of first pressing portions 514b may surround at least a portion of the outer circumferential surface of the first rod 513. The plurality of first pressing portions 514b may include a first portion 514b-1 and a second portion 514b-2. The first portion 514b-1 and the second portion 514b-2 may contact the first rod 513. When the plurality of first pressing portions 514b and the first rod 513 are observed in the optical axis directions ① and ②, the plurality of first pressing portions 514b and the first rod 513 may be connected in a three-point contact structure. For example, the plurality of first pressing portions 514b may be configured such that the first portion 514b-1 makes two-point contact with the first rod 513, and the second portion 514b-2 makes one-point contact with the first rod 513. According to the illustrated embodiment, the first portion 514b-1 may be partially bent to make two-point contact with the first rod 513.

[0196] The plurality of first pressing portions 514b may contact the first rod 513 disposed between the first portion 514b-1 and the second portion 514b-2 while maintaining a predetermined preload. For example, the plurality of first pressing portions 514b may contact the outer peripheral circumferential surface of the first rod 513 while elastically pressing the first rod 513. The plurality of first pressing portions 514b may be configured such that the first portion 514b-1 and the second portion 514b-2 apply preloads to the first rod 513 in opposite directions. For example, the first portion 514b-1 may apply a preload P3 to the first rod 513 in a direction toward the second portion 514b-2, and the second portion 514b-2 may apply a preload P4 to the first rod 513 in a direction toward the first portion 514b-1. Since the plurality of first pressing portions 514 b are divided into the first portion 514 b - 1 and the second portion 514 b - 2 , the first connection member 514 according to an embodiment of the present disclosure may easily adjust the preload applied to the first rod 513 .

[0197] The plurality of first pressing portions 514b may be formed to have elastic force. For example, the first portion 514b-1 and the second portion 514b-2 may be formed of a leaf spring made of a metal material, but is not limited thereto. When the plurality of first pressing portions 514b are elastically coupled to the first rod 513, based on the deformation speed of the first piezoelectric element 511 (or the moving speed of the first rod 513) (e.g., stick-slip motion), the first connecting member 514 may move with the first rod 513 or may not move with the first rod 513. For example, when the first rod 513 moves at a speed lower than a predetermined speed, the first connecting member 514 may move with the first rod 513, and when the first rod 513 moves at a speed higher than a predetermined speed, the first connecting member 514 may not move with the first rod 513. In other words, the ratio of the speed of the first rod 513 to the speed of the connecting member 514 may vary according to the deformation speed of the first piezoelectric element 511. The following will refer to Fig.20a An operation of moving the first connecting member 514 in the first piezoelectric motor 510 is described in detail.

[0198] In an embodiment, the first fixing portion 514c may be coupled to the first carrier 440. For example, the first fixing portion 514c may be fixedly coupled to the first carrier 440 so as to move together with the first carrier 440 (eg, refer to Figure 7 For example, when the first carrier 440 is connected to the first connection member 514 through the first fixing portion 514 c, the first carrier 440 may move together with the first connection member 514 when the first connection member 514 moves along the optical axis directions ① and ② on the first rod 513 .

[0199] Fig.10 2 is a view showing the action of the first piezoelectric motor according to the embodiment.

[0200] Reference Fig.10 , the first piezoelectric motor 510 according to the embodiment may include a first piezoelectric element 511 , an elastic body 512 attached to the first piezoelectric element 511 , and a first rod 513 attached to the elastic body 512 . Fig.10 is to omit the first connecting member (for example, Figure 9a and Figure 9b 514).

[0201] In an embodiment, the first piezoelectric motor 510 may be configured such that when the elastic body 512 is bent by the expansion and contraction of the first piezoelectric element 511, the first rod 513 moves in the optical axis directions ① and ②. For example, the first piezoelectric element 511 may contract or expand in the direction of the length L of the first piezoelectric element 511 based on the voltage applied thereto. The elastic body 512 may be bent in the first optical axis direction ① or the second optical axis direction ② by the contraction or expansion of the first piezoelectric element 511, and the first rod 513 may move linearly in the first optical axis direction ① or the second optical axis direction ② in response to the bending direction of the first piezoelectric element 511.

[0202] Reference occurs from Fig.10 In the operation of deformation from the middle figure to the left figure, the first piezoelectric motor 510 may receive a voltage for contracting the first piezoelectric element 511 in the direction of the length L. When the first piezoelectric element 511 contracts in the direction of the length L, due to the difference in rigidity between the second surface 5112 to which the elastic body 512 is attached and the first surface 5111 to which the elastic body 512 is not attached, the portion adjacent to the second surface 5112 may contract less than the portion adjacent to the first surface 5111. Therefore, the first piezoelectric element 511 may be bent in the second optical axis direction ② facing the second surface 5112, and the elastic body 512 may be bent together with the first piezoelectric element 511 in the second optical axis direction ②. For example, the elastic body 512 and the first piezoelectric element 511 may also be bent into a shape in which the central portion is convex in the second optical axis direction ②. When the elastic body 512 is convexly bent in the second optical axis direction ②, the first rod 513 may be linearly moved a specified distance d in the second optical axis direction ②.

[0203] Reference occurs from Fig.10In the operation of deformation from the middle figure to the right figure, the first piezoelectric motor 510 may receive a voltage for expanding the first piezoelectric element 511 in the direction of the length L. When the first piezoelectric element 511 expands in the direction of the length L, due to the difference in rigidity between the second surface 5112 and the first surface 5111, the portion adjacent to the second surface 5112 may expand less than the portion adjacent to the first surface 5111. Therefore, the first piezoelectric element 511 may be bent in the first optical axis direction ① facing the first surface 5111, and the elastic body 512 may be bent together with the first piezoelectric element 511 in the first optical axis direction ①. For example, the elastic body 512 and the first piezoelectric element 511 may also be bent into a shape in which the central portion is convex in the first optical axis direction ①. When the elastic body 512 is convexly bent in the first optical axis direction ①, the first rod 513 may be linearly moved a specified distance d in the first optical axis direction ①.

[0204] In an embodiment, based on the polarization direction of the first piezoelectric element 511 and the direction of the electric field, the first piezoelectric element 511 may shrink or expand in the longitudinal direction. When an electric field facing the same direction as the polarization direction of the first piezoelectric element 511 is formed for the first piezoelectric element 511, the first piezoelectric element 511 may shrink in the length direction. For example, the polarization direction of the first piezoelectric element 511 may be substantially parallel to the optical axis directions ① and ②, and when an electric field is formed in the same direction as the polarization direction, due to the Poisson's ratio, the first piezoelectric element 511 may expand in the polarization direction (e.g., the optical axis directions ① and ② or the thickness direction) and may shrink in the longitudinal direction. When an electric field facing the opposite direction to the polarization direction of the first piezoelectric element 511 is formed for the first piezoelectric element 511, the first piezoelectric element 511 may expand in the longitudinal direction. For example, the polarization direction of the first piezoelectric element 511 may be substantially parallel to the optical axis directions ① and ②, and when an electric field is formed in a direction opposite to the polarization direction, due to the Poisson's ratio, the first piezoelectric element 511 may contract in the polarization direction (for example, the optical axis directions ① and ② or the thickness direction) and may expand in the longitudinal direction.

[0205] In an embodiment of the present disclosure, since the first piezoelectric motor 510 has a structure in which the first piezoelectric element 511 and the elastic body 512 are coupled to each other, the contraction / expansion of the first piezoelectric element 511 can be converted into bending vibrations of the first piezoelectric element 511 and the elastic body 512, and the first rod 513 can vibrate linearly in the optical axis directions ① and ② through the bending vibrations.

[0206] Fig.11 2 is a view showing an operation in which a first piezoelectric element and an elastic body of a first piezoelectric motor according to an embodiment vibrate.

[0207] Reference Fig.11 , according to the first piezoelectric motor of the embodiment (eg, Figure 9a and Figure 9b The first piezoelectric motor 510 may include a first piezoelectric element 511 and an elastic body 512 attached or bonded to each other. Fig.11 The first rod may be omitted (eg, Figure 9a and Figure 9b 513) and a first connecting member (eg, Figure 9a and Figure 9b 514).

[0208] In the following, we refer to Fig.11 and Fig.9c The position of the protruding portion 517 for the vibration isolation structure will be described.

[0209] In an embodiment, the first piezoelectric element 511 and the elastomer 512 may form a vibrator of the first piezoelectric motor 510. For example, the vibrator may include an elastomer 512 and a first piezoelectric element 511 attached to an upper surface (e.g., a surface facing the first optical axis direction ①) of the elastomer 512, and a bending vibration may be formed by stretching the vibration of the first piezoelectric element 511. The vibrator of the first piezoelectric motor 510 according to the illustrated embodiment may be a uni-morph type vibrator. In the following, a vibrator is used as a term referring to a structure or component in which the elastomer 512 and the first piezoelectric element 511 are bonded or combined with each other.

[0210] In an embodiment, the elastic body 512 may include a base portion 515, an extension portion 516, and a protrusion portion 517, wherein the extension portion 516 is formed at opposite ends of the base portion 515, and the protrusion portion 517 is formed on a side surface (e.g., Fig.9c on the first side surface 5151 and the second side surface 5152 of the base portion 515 so as to be located between the extension portions 516.

[0211] In an embodiment, the protrusion 517 may be formed at a position spaced a specified distance from the extension portion 516 toward the center of the vibrators 511, 512. For example, when the vibrators 511 and 512 are viewed in the direction of the first side surface 5151 of the base portion 515, the central axis CA may be defined as passing through the centers of the vibrators 511 and 512, and the protrusion 517 may be located between the central axis CA and the extension portion 516. The protrusion 517 may include a first protrusion 518 (e.g., Fig.9c The first protrusion 518a and the second protrusion 518b) and the second protrusion portion 519 (for example, Fig.9c The third protrusion 519a and the fourth protrusion 519b are formed, and the first protrusion portion 518 and the second protrusion portion 519 may be formed at positions symmetrical to each other with respect to the central axis CA. For example, the vibrators 511 and 512 may also be formed in a symmetrical shape with respect to the central axis CA.

[0212] The protrusion 517 may be supported on at least a portion of the second carrier 450 (eg, Figure 6 and Figure 7 The first piezoelectric motor 510 is placed on the second carrier (eg, Figure 6 and Figure 7 In order to reduce the transmission of vibration of the vibrators 511 and 512 to the second carrier 450 when the first piezoelectric motor 510 is driven, the protrusion 517 may be formed at a position on the vibrators 511 and 512 where the vibration displacement in the optical axis directions ① and ② is the smallest.

[0213] Reference Fig.11 , the vibrators 511 and 512 can be subjected to bending vibration in the optical axis directions ① and ② by contraction or expansion of the first piezoelectric element 511. When the vibrators 511 and 512 vibrate, at least a portion (some points or areas) of the vibrators 511 and 512 may not vibrate, and the vibration displacement in the optical axis directions ① and ② may be substantially 0. The non-vibration point where the vibration displacement on the vibrators 511 and 512 is substantially 0 may be defined as a node position N (e.g., a node, a node, or a node line). For example, when the vibrators 511 and 512 vibrate in the optical axis directions ① and ②, one or more node positions N whose positions remain unchanged may be formed in at least a portion of the vibrators 511 and 512.

[0214] The vibrators 511 and 512 may have two node positions N that are symmetrical to each other with respect to the central axis CA, and the node positions N are located on the vibrators 511 and 512. For example, the node positions N may also overlap with the vibrators 511 and 512 at positions that are symmetrical to each other with respect to the central axis CA, with the directions of the side surfaces 5151 and 5152 of the base portion 515 as reference. Even when the vibrators 511 and 512 vibrate, the node positions N of the vibrators 511 and 512 may be located on the same line without moving. For example, the portion where the node positions N of the vibrators 511 and 512 are located may have the smallest vibration displacement in the optical axis directions ① and ②, or may have no vibration displacement. In the illustrated embodiment, the node positions N may be located on the elastic body 512 of the vibrators 511 and 512. However, the position of the node positions N may also be changed to correspond to the shapes of the first piezoelectric element 511 and the elastic body 512 that constitute the vibrators 511 and 512.

[0215] The protrusion 517 may be formed at a position corresponding to the node position N of the vibrators 511 and 512. The protrusion 517 may be formed at a position overlapping the node position N. For example, the protrusion 517 may overlap the node position N with reference to the direction of the width W and / or the direction of the thickness T of the base portion 515. In the illustrated embodiment, the protrusion 517 may overlap the node position N with reference to the direction of the width W and the direction of the thickness T of the base portion 515. In various embodiments, the node position N may be defined or formed on the first piezoelectric element 511 of the vibrators 511 and 512 according to the shape of the vibrators 511 and 512. In this case, the protrusion 517 may overlap the node position N with reference to the direction of the width W of the base portion 515 (or the optical axis directions ① and ②), and may not overlap the node position N with reference to the direction of the width W of the base portion 515 (or the direction of the first side surface 5151 and the second side surface 5152).

[0216] The two protrusions 517 may be formed to overlap with the two node positions N, respectively. Fig.11 In the embodiment of the present invention, the first protrusion portion 518 may overlap with the node position N located on the right side relative to the central axis CA, and the second protrusion portion 519 may overlap with the node position N located on the left side relative to the central axis CA. The protrusion portion 517 may be based on the width of the base portion 515 (for example, Fig.9c The first protrusion portion 518 and the second protrusion portion 519 may protrude from a partial area of ​​the first side surface 5151 and the second side surface 5152 of the base portion 515 that overlaps with the node position N. For example, when the vibrators 511 and 512 are viewed in the direction of the first side surface 5151 and the second side surface 5152 of the base portion 515, the two node positions N may be located on the first protrusion portion 518 and the second protrusion portion 519.

[0217] Fig.12 is a view showing a coupling structure of a first piezoelectric motor and a second carrier of a camera module according to an embodiment.

[0218] Fig.12 yes Figure 7 Magnified view of part A in FIG.

[0219] Reference Fig.12 , according to the camera module of the embodiment (eg, Figure 4a , Figure 4b and Figure 5 The camera module 400 may include a first carrier 440, a second carrier 450, and a first piezoelectric motor 510. The first piezoelectric motor 510 may include a first piezoelectric element 511, an elastic body 512, a first rod 513, and a first connecting member 514.

[0220] In an embodiment, the first fixing portion 514c of the first connecting member 514 of the first piezoelectric motor 510 may be coupled to the first carrier 440 in a state in which a portion of the elastic body 512 is supported on the second carrier 450. For example, in a state in which a portion of the elastic body 512 is supported on the second carrier 450, the first piezoelectric motor 510 may be operated so that vibration displacement is generated in the first piezoelectric element 511 and the elastic body 512, and when the first connecting member 514 moves in the direction of the optical axis OA on the first rod 513 according to the vibration displacement, the first carrier 440 connected to the first fixing portion 514c may move in the direction of the optical axis OA together with the first connecting member 514.

[0221] In an embodiment, the second carrier 450 may include a motor support part 453, wherein the first piezoelectric motor 510 is disposed on the motor support part 453. The motor support part 453 may include a first side wall 4531 and a second side wall 4532 facing the first side wall 4531. An opening area 4533 may be formed between the first side wall 4531 and the second side wall 4532. The first side wall 4531 and the second side wall 4532 may support the first piezoelectric motor 510. The elastic body 512 may be coupled to a partial area of ​​the first side wall 4531 and the second side wall 4532. For example, when the first rod 513 is accommodated in the opening area 4533 and the elastic body 512 contacts the first side wall 4531 and the second side wall 4532, the first piezoelectric motor 510 may be disposed on the motor support part 453.

[0222] Each of the first side wall 4531 and the second side wall 4532 may include a first joint portion 453a and a second joint portion 453b to which the elastic body 512 is coupled. The first joint portion 453a may be provided in a width direction of the elastic body 512 (eg, Fig.9c The second engaging portion 453b may extend in the thickness direction of the elastic body 512 (eg, Fig.9c Extending from opposite ends of the first joining portion 453a in the z-axis direction or the direction of thickness T).

[0223] The first bonding portion 453a may be bonded to the base portion 515 and the protrusion portion 517 of the elastic body 512, and the second bonding portion 453b may be bonded to the protrusion portion 517 of the elastic body 512. For example, the second bonding portion 453b of the first side wall 4531 may be bonded to the first protrusion portion 518, and the second bonding portion 453b of the second side wall 4532 may be bonded to the second protrusion portion 519. A partial area of ​​the bottom surface (e.g., the surface facing the -z axis direction) of the protrusion portion 517 and a bottom surface (e.g., the surface facing the -z axis direction) of the base portion 515 that is aligned with the protrusion portion 517 may be bonded to the first bonding portion 453a, and a side surface of the protrusion portion 517 may be bonded to the second bonding portion 453b. The partial area of ​​the elastic body 512 bonded to the first bonding portion 453a is referred to as Figure 9b The first and second bonding portions 453a and 453b may be bonded to the elastic body 512 by various bonding means.

[0224] In an embodiment, the remaining portion of the elastic body 512 except for the portion engaged with the first engaging portion 453a and the second engaging portion 453b may be spaced apart from the motor supporting member 453. For example, each of the first side wall 4531 and the second side wall 4532 may include a step portion 453c connected in a stepped manner from the first engaging portion 453a, and the step portion 453c may be spaced apart from the elastic body 512 by a specified gap. Therefore, a space for vibration of the elastic body 512 may be ensured.

[0225] According to an embodiment of the present disclosure, the elastic body 512 of the first piezoelectric motor 510 may be divided into a portion coupled to the second carrier 450 and a portion not coupled to the second carrier 450 based on the protrusion 517. The protrusion 517 and the base portion 515 corresponding to the protrusion 517 may be coupled to (or supported on) the second carrier 450, and the protrusion 517 may be formed at a normal position (e.g., a position where the vibration displacement of the vibrator (e.g., the first piezoelectric element 511 and the elastic body 512) is minimized. Fig.11 Therefore, when the vibrators 511 and 512 vibrate as the first piezoelectric motor 510 is driven, unnecessary vibration transmitted to the second carrier 450 can be reduced, and noise caused by vibration / collision between components included in the camera module 400 can be reduced.

[0226] Fig.13 is a view illustrating a coupling structure of a second carrier, a guide member, and a second piezoelectric motor of a camera module according to an embodiment. Fig.14 is an exploded perspective view showing a camera housing, a second carrier, a guide member, and a second piezoelectric motor of a camera module according to an embodiment.

[0227] Reference Fig.13 and Fig.14 , according to the camera module of the embodiment (eg, Figure 4a , Figure 4b and Figure 5 The camera module 400 may include a camera housing 410, a second carrier 450, a first guide member 460, a second guide member 470, a second spring member 495, a motor holder 493, a plurality of guide balls 483, 484, 485 and 486, and a second piezoelectric motor 530. The camera housing 410 may be referred to as a base 413 (e.g., Figure 5 base 413).

[0228] Fig.13 and Fig.14 At least some of the components of the camera module 400 shown in FIG. Figure 5 Some of the components of the camera module 400 shown in FIG. 4 are the same or similar, and repeated descriptions will be omitted hereinafter.

[0229] In an embodiment, the base 413 may include a first support surface 415 on which the first guide member 460 and the motor holder 493 are disposed. The first guide member 460 may be disposed on the first support surface 415 of the base 413 so that the first guide member 460 may be movable in the direction of the first displacement axis S1, but the movement of the first guide member 460 in the direction of the second displacement axis S2 is limited (or, constrained). A plurality of third balls 483 for guiding the movement of the first guide member 460 relative to the base 413 in the direction of the first displacement axis S1 may be disposed between the base 413 and the first guide member 460. For example, a plurality of fourth grooves 419 extending in the direction of the first displacement axis S1 may be formed in the first support surface 415, and the plurality of third balls 483 may be accommodated in the plurality of fourth grooves 419. The motor holder 493 may be fixed to the first support surface 415 of the base 413. For example, the motor holder 493 may be fixedly disposed at edges of the first support surface 415 of the base 413 that are perpendicular to each other (eg, an edge facing the +x-axis direction and an edge facing the −y-axis direction).

[0230] In an embodiment, the first guide member 460 may be configured such that the first guide member 460 is movable relative to the base 413 in the direction of the first displacement axis S1, and the movement of the first guide member 460 in the direction of the second displacement axis S2 is restricted. A plurality of third balls 483 for guiding the movement of the first guide member 460 relative to the base 413 may be provided between the first guide member 460 and the base 413. When the plurality of third balls 483 are accommodated in the guide grooves (e.g., Fig.14 The fourth slot 419 and Fig.18b When the first guide member 460 is in the fifth groove 463 of the first piezoelectric motor 530, the first guide member 460 may be movable only in the direction of the first displacement axis S1 relative to the base 413. The first guide member 460 may receive a driving force from the first sub-piezoelectric motor 530-1 driven in the direction of the first displacement axis S1 of the second piezoelectric motor 530. For example, the first guide member 460 may be connected to the second connection member 534 of the first sub-piezoelectric motor 530-1.

[0231] The first guide member 460 may include a second upper surface 460a, wherein the second carrier 450 is disposed on the second upper surface 460a. The first guide member 460 may be disposed on the second upper surface 460a of the first guide member 460 so that the first guide member 460 can move in the direction of the second displacement axis S2, but the movement of the first guide member 460 in the direction of the first displacement axis S1 is limited (or, constrained). A plurality of fourth balls 484 for guiding the movement of the second carrier 450 relative to the first guide member 460 in the direction of the second displacement axis S2 may be disposed between the first guide member 460 and the second carrier 450.

[0232] In an embodiment, the second carrier 450 may be configured so that the second carrier 450 can move relative to the first guide member 460 in the direction of the second displacement axis S2, and the movement of the second carrier 450 in the direction of the first displacement axis S1 is restricted. A plurality of fourth balls 484 for guiding the movement of the second carrier 450 relative to the first guide member 460 may be provided between the second carrier 450 and the first guide member 460. When the plurality of fourth balls 484 are accommodated in the guide grooves (e.g., Fig.18a The sixth slot 462 and Fig.18b When the second carrier 450 is in the seventh groove 453 of the first guide member, the second carrier 450 can move relative to the first guide member 460 only in the direction of the second shift axis S2.

[0233] The second carrier 450 may include a first upper surface 450a, wherein the second guide member 470 is disposed on the first upper surface 450a. The second guide member 470 may be disposed on the first upper surface 450a of the second carrier 450 so that the second guide member 470 can move in the direction of the first displacement axis S1, but the movement of the second guide member 470 in the direction of the second displacement axis S2 is limited (or, constrained). A plurality of fifth balls 485 for guiding the movement of the second guide member 470 in the direction of the first displacement axis S1 relative to the second carrier 450 may be disposed between the second carrier 450 and the second guide member 470. A lens assembly (e.g., Figure 5 The lens assembly 420) of the first carrier (eg, Figure 5The first carrier 440 ) may be disposed on the second carrier 450 .

[0234] The second carrier 450 may receive the driving force of the second piezoelectric motor 530 through the first guide member 460 and the second guide member 470. For example, when the first guide member 460 moves in the direction of the first displacement axis S1 due to the first sub-piezoelectric motor 530-1, the second carrier 450 may move in the direction of the first displacement axis S1 together with the first guide member 460. In addition, when the second guide member 470 moves in the direction of the second displacement axis S2 due to the second sub-piezoelectric motor 530-2, the second carrier 450 may move in the direction of the second displacement axis S2 together with the second guide member 470. When the second carrier 450 receives the driving force through the first guide member 460 and the second guide member 470 without being directly connected to the second piezoelectric motor 530, the second carrier 450 may have a degree of freedom in the directions of the first displacement axis S1 and the second displacement axis S2 of the base 413. For example, when the second carrier 450 is directly connected to the first sub-piezoelectric motor 530-1, the driving of the second sub-piezoelectric motor 530-2 may be constrained, and when the second carrier 450 is directly connected to the second sub-piezoelectric motor 530-2, the driving of the first sub-piezoelectric motor 530-1 may be constrained. Since the second carrier 450 according to the embodiment of the present disclosure is not directly connected to the second piezoelectric motor 530, the driving of the second piezoelectric motor 530 may not be restricted. Therefore, a design for the second piezoelectric motor 530 to move relative to the FPCB to apply power can be avoided.

[0235] In an embodiment, the second guide member 470 may be configured such that the second guide member 470 can move relative to the second carrier 450 in the direction of the first displacement axis S1, and the movement of the second guide member 470 in the direction of the second displacement axis S2 is restricted. A plurality of fifth balls 485 for guiding the movement of the second guide member 470 relative to the second carrier 450 may be provided between the second guide member 470 and the second carrier 450. When the plurality of fifth balls 485 are accommodated in the guide grooves (e.g., Fig.18a The eighth slot 455 and Fig.18b When the second guide member 470 is in the ninth groove 476 of the second piezoelectric motor 530, the second guide member 470 may move only in the direction of the first displacement axis S1 relative to the second carrier 450. The second guide member 470 may receive a driving force from the second sub-piezoelectric motor 530-2 driven in the direction of the second displacement axis S2 of the second piezoelectric motor 530. For example, the second guide member 470 may be connected to the second connecting member 534 of the second sub-piezoelectric motor 530-2.

[0236] The second guide member 470 may be in pressure contact with the second spring member 495. For example, a partial area of ​​the second guide member 470 may be in contact with the second spring member 495, and a predetermined preload P8 in a direction toward the second carrier 450, the first guide member 460, and the base 413 may be received by the second spring member 495. The second guide member 470 may partially overlap with the second spring member 495 in the direction of the optical axis OA.

[0237] The plurality of sixth balls 486 may be disposed between the second guide member 470 and the second spring member 495 to enable the second guide member 470 to smoothly move relative to the second spring member 495 fixed to the base 413. For example, when the second guide member 470 moves in the direction of the second displacement axis S2 due to the second sub-piezoelectric motor 530-2, the second guide member 470 may move relative to the second spring member 495 fixed to the motor holder 493, and the plurality of sixth balls 486 may perform a rotational motion between the second guide member 470 and the second spring member 495 to smoothly move the second guide member 470.

[0238] The seventh ball 487 may be disposed between the second guide member 470 and the first guide member 460 to achieve smooth movement when the first guide member 460 moves relative to the second guide member 470 together with the second carrier 450 or when the second guide member 470 moves relative to the first guide member 460 together with the second carrier 450. For example, when the first guide member 460 moves relative to the second guide member 470 in the direction of the first displacement axis S1 due to the first sub piezoelectric motor 530-1 or when the second guide member 470 moves relative to the first guide member 460 in the direction of the second displacement axis S2 due to the second sub piezoelectric motor 530-2, the seventh ball 487 may perform a rotational motion between the second guide member 470 and the first guide member 460. The seventh ball 487 may be accommodated in the through hole 457 formed in the second carrier 450 and may be disposed between the first guide member 460 and the second guide member 470 accordingly. For example, a portion of the first guide member 460 and a portion of the second guide member 470 may face each other in the direction of the optical axis OA passing through the through-hole 457, and may contact the seventh ball 487 accommodated in the through-hole 457. The seventh ball 487 may be accommodated in the through-hole 457 of the second carrier 450 to achieve rotational movement and / or rolling movement between the first guide member 460 and the second guide member 470 when the first guide member 460 and the second guide member 470 move relative to each other. However, according to various embodiments, the seventh ball 487 may be omitted.

[0239] In an embodiment, the second spring member (or elastic member) 495 may apply a predetermined preload P8 to the second guide member 470, the second carrier 450, and the first guide member 460 in a direction toward the base 413. The second spring member 495 may be formed to have an elastic force. For example, the second spring member 495 may be a spring (e.g., a leaf spring) having a thin plate shape, and may elastically fix the second guide member 470, the second carrier 450, and the first guide member 460 to the base 413. In various embodiments, the second spring member 495 may be formed of a leaf spring made of a metal material, but is not limited thereto.

[0240] The second spring member 495 may include a central portion 495a partially in contact with the second guide member 470, a first end portion 495b extending from one side of the central portion 495a and fixed to the first motor holder 493-1, and a second end portion 495c extending from the opposite side of the central portion 495a and fixed to the second motor holder 493-2. When the motor holder 493 is fixed to the base 413 and the opposite ends of the second spring member 495 are fixed to the motor holder 493, the central portion 495a of the second spring member 495 may apply a preload P8 to the second guide member 470 in a direction toward the base 413. The first guide member 460, the second carrier 450, and the second guide member 470 may be in pressure contact with the first support surface 415 of the base 413, the second upper surface 460a of the first guide member 460, and the first upper surface 450a of the second carrier 450 due to the second spring member 495, respectively.

[0241] When the preload structure is applied by the second spring member 495, the guide grooves of the base 413 and the first guide member 460 accommodating the plurality of third balls 483 may contact each other by a predetermined pressing force, the guide grooves of the first guide member 460 and the second carrier 450 accommodating the plurality of fourth balls 484 may contact each other by a predetermined pressing force, and the guide grooves of the second carrier 450 and the second guide member 470 accommodating the plurality of fifth balls 485 may contact each other by a predetermined pressing force. Therefore, a ball guide structure that is movable in the extending direction of each guide groove and is restricted from moving in a direction perpendicular to the extending direction of the guide groove may be realized.

[0242] In an embodiment, the motor holder 493 may support the second piezoelectric motor 530. The motor holder 493 may be fixedly coupled to the base 413. The motor holder 493 may include a first motor holder 493-1 connected to the first sub-piezoelectric motor 530-1 and a second motor holder 493-2 connected to the second sub-piezoelectric motor 530-2. The opposite ends 495b and 495c of the second spring member 495 may be coupled to the first motor holder 493-1 and the second motor holder 493-2.

[0243] The motor holder 493 may include a coupling protrusion 493a, wherein the second rod 532 of the second piezoelectric motor 530 is coupled to the coupling protrusion 493a. The second rod 532 may be assembled into the coupling protrusion 493a. For example, the second rod 532 may be coupled to a recess formed in the coupling protrusion 493a, so that the second rod 532 may move in the coupling protrusion 493a along the longitudinal direction of the second rod 532 (for example, the direction of the displacement axes S1 and S2). The coupling protrusion 493a may be formed by an elastic member having elasticity, so that the second rod 532 is inserted into the coupling protrusion 493a. For example, the second piezoelectric motor 530 may be driven in a state coupled to the motor holder 493 fixed to the base 413, and the first guide member 460 and the second guide member 470 may be moved relative to the base 413.

[0244] In an embodiment, the second piezoelectric motor 530 may provide a driving force for moving the second carrier 450 in the direction of the displacement axes S1 and S2. For example, the second piezoelectric motor 530 may generate a driving force based on a change in the shape of a piezoelectric ceramic depending on the application of a voltage. The second carrier 450 may move in the direction of the displacement axes S1 and S2 due to the second piezoelectric motor 530. In various embodiments, the second piezoelectric motor 530 may be referred to as a piezoelectric linear actuator or an ultrasonic linear actuator.

[0245] The second piezoelectric motor 530 may be indirectly connected to the second carrier 450 through the guide members 460 and 470 in a state fixed to the base 413, and the second carrier 450 may be moved relative to the base 413 in the directions of the displacement axes S1 and S2. The second piezoelectric motor 530 may include a first sub-piezoelectric motor 530-1 that generates a driving force in the direction of the first displacement axis S1 and a second sub-piezoelectric motor 530-2 that generates a driving force in the direction of the second displacement axis S2. The first sub-piezoelectric motor 530-1 may be disposed on the base 413 in the direction of the first displacement axis S1, and the second sub-piezoelectric motor 530-2 may be disposed on the base 413 in the direction of the second displacement axis S2. For example, the first sub-piezoelectric motor 530-1 may be disposed adjacent to an edge of the base 413 parallel to the first displacement axis S1, and the second sub-piezoelectric motor 530-2 may be disposed adjacent to an edge of the base 413 parallel to the second displacement axis S2.

[0246] In an embodiment, the first sub-piezoelectric motor 530-1 and the second sub-piezoelectric motor 530-2 may have substantially the same structure. Each of the first sub-piezoelectric motor 530-1 and the second sub-piezoelectric motor 530-2 may include a second piezoelectric element 531, a second rod 532, a counterweight 533, and a second connecting member 534. A portion of the second piezoelectric motor 530 may be supported on the motor holder 493, and a second fixing portion (e.g., Fig.15a The second fixing portion 537) may be coupled to the guide members 460 and 470. For example, the second connecting member 534 of the first sub-piezoelectric motor 530-1 may be connected to the first connecting portion 461 of the first guide member 460 in a state where the first sub-piezoelectric motor 530-1 is supported on the first motor holder 493-1, and the second connecting member 534 of the second sub-piezoelectric motor 530-2 may be connected to the second connecting portion 471 of the second guide member 470 in a state where the second sub-piezoelectric motor 530-2 is supported on the second motor holder 493-2. The second piezoelectric motor 530 may generate a driving force based on the vibration displacement of the second piezoelectric element 531 and the elastic body 512. The following will refer to Fig.15a , Fig.15b and Fig.16 The components and operation of the second piezoelectric motor 530 are described in detail.

[0247] According to an embodiment, the OIS carrier may be a structure that allows the entire AF sub-unit to be mounted on top of each other and may ultimately be connected to a lens to provide two-dimensional driving in a direction perpendicular to the optical axis.

[0248] Due to the structural characteristics of the piezoelectric motor, since the moving parts are mechanically coupled to the rod, no movement other than one-dimensional linear movement is performed. Therefore, in the conventional X and Y drive OIS structure using a piezoelectric motor, it is necessary to design a structure in which the motor driving a specific axis rests on the motor driving other axes, and it is necessary to design a mechanism with appropriate movement to ensure that the FPCB used to power the motor of a specific axis does not interfere with the operation of other axes. In the conventional system according to the prior art, this may lead to problems of balancing the X and Y OIS operations, increasing the size and power consumption of the actuator, so it can be said that this is a problem that needs to be overcome in the development direction of piezoelectric actuators for mobile cameras that are intended to be lightweight, small in size, and low in power consumption. The embodiments of the present disclosure solve these problems.

[0249] Fig.15a is a view showing a second piezoelectric motor of a camera module according to an embodiment. Fig.15b is a view showing a second piezoelectric motor of a camera module according to an embodiment.

[0250] Fig.15a is a perspective view of the second piezoelectric motor 530, Fig.15b When looking in direction C Fig.15a A plan view of the second piezoelectric motor 530.

[0251] Reference Fig.15a and Fig.15b , according to the camera module of the embodiment (eg, Figure 4a , Figure 4b and Figure 5The second piezoelectric motor 530 of the camera module 400 may include a second piezoelectric element 531, a second rod 532, a weight 533, and a second connecting member 534. For example, the second piezoelectric motor 530 may be provided in a structure in which the second rod 532 and the weight 533 are coupled to opposite ends of the second piezoelectric element 531 and the second connecting member 534 is coupled to the second rod 532 so as to slide.

[0252] In an embodiment, when a voltage is applied to the second piezoelectric element 531, mechanical displacement or deformation, such as expansion or contraction, may occur according to the direction of the electric field and the polarization direction of the second piezoelectric element 531. For example, when a voltage is applied to the second piezoelectric element 531, the second piezoelectric element 531 may be deformed. The second piezoelectric element 531 may be formed by using various piezoelectric elements including piezoelectric ceramics, piezoelectric polymers, or piezoelectric composite materials. For example, the second piezoelectric element 531 may be a piezoelectric ceramic based on lead zirconate titanate (PZT), but is not limited thereto.

[0253] The second piezoelectric element 531 may have a shape extending in a direction substantially perpendicular to the optical axis OA, and may contract or expand in the longitudinal direction of the second piezoelectric element 531 when a voltage is applied to the second piezoelectric element 531. Here, the longitudinal direction of the second piezoelectric element 531 may be a first displacement axis substantially perpendicular to the optical axis OA (e.g., Fig.13 and Fig.14 The first displacement axis S1) or the second displacement axis (eg, Fig.13 and Fig.14 In the illustrated embodiment, the second piezoelectric element 531 may be formed in a rectangular parallelepiped shape extending in a direction substantially perpendicular to the optical axis OA, and the longitudinal direction of the second piezoelectric element 531 may refer to a direction parallel to the longest edge of the edges of the rectangular parallelepiped. However, the shape of the second piezoelectric element 531 is not limited to the illustrated embodiment, and the second piezoelectric element 531 may also be formed in various shapes including a cylindrical shape.

[0254] The second rod 532 and the weight 533 may be respectively coupled to opposite ends of the second piezoelectric element 531. For example, the second rod 532 may be attached to one side surface of the second piezoelectric element 531 in the longitudinal direction, and the weight 533 may be attached to the opposite side surface of the second piezoelectric element 531 in the longitudinal direction.

[0255] In an embodiment, the second rod 532 may be coupled to one end of the second piezoelectric element 531. The second rod 532 may move as the second piezoelectric element 531 contracts or expands in a direction substantially perpendicular to the optical axis OA relative to the counterweight 533. The second rod 532 may extend in a direction parallel to the extension direction of the second piezoelectric element 531. For example, the second rod 532 may be formed in a cylindrical shape, and the length of the second rod 532 may remain constant. The second rod 532 may be formed of a carbon-based material. For example, the second rod 532 may be formed of a carbon fiber reinforced plastic (CFRP) material. However, the shape or material of the second rod 532 is not limited to the above.

[0256] The second rod 532 may provide a second carrier (eg, Fig.13 and Fig.14 The second carrier 450 of the second rod 532 is moved. In a state where the second rod 532 is coupled to one end of the second piezoelectric element 531, at least a portion of the second rod 532 may be coupled to the second connecting member 534. The second rod 532 is capable of performing an operation of moving together with the second connecting member 534 and an operation of moving separately from the second connecting member 534. For example, the second rod 532 may be connected to the second connecting member 534 so as to perform an operation of moving together with the second connecting member 534 and an operation of moving relative to the second connecting member 534 based on a moving speed. The moving speed of the second rod 532 may be determined and controlled based on the speed at which the second piezoelectric element 531 contracts or expands.

[0257] In an embodiment, a counterweight 533 may be coupled to an opposite end of the second piezoelectric element 531. The counterweight 533 may be used to support the opposite end of the second piezoelectric element 531 so that the contraction or expansion of the second piezoelectric element 531 is smoothly converted into the linear motion of the second rod 532. The counterweight 533 may be a reference for the contraction or expansion of the second piezoelectric element 531. For example, the counterweight 533 may support the opposite end of the second piezoelectric element 531 so that the opposite end of the second piezoelectric element 531 is a fixed end. The counterweight 533 may be formed to have a specified mass. For example, the counterweight 533 may be formed of a metal material, but is not limited thereto.

[0258] In an embodiment, the second connecting member 534 may be coupled to the second rod 532 of the second piezoelectric motor 530. For example, the second connecting member 534 may be coupled to the second rod 532 to move together with the second rod 532 or to move separately from the second rod 532 based on friction or inertia. For example, a portion of the second connecting member 534 may be coupled to the second rod 532 by elastically pressure-contacting the second rod 532, and another portion of the second connecting member 534 may be coupled to a guide member (e.g., Fig.13 and Fig.14The guide members 460 and 470 may move together with the second connection member 534. The second connection member 534 may transmit the driving force of the second piezoelectric motor 530 to the guide members 460 and 470.

[0259] The second connecting member 534 may include a second main body portion 535, a plurality of second pressing portions 536 and a second fixing portion 537, wherein the plurality of second pressing portions 536 are connected to one side of the second main body portion 553, and the second fixing portion 537 is connected to the opposite side of the second main body portion 535. For example, the second main body portion 535 may be formed by an injection molding material, and the plurality of second pressing portions 536 and the second fixing portion 537 are formed by a metal material. However, the present disclosure is not limited thereto. In various embodiments, the second connecting member 534 may be formed or manufactured by an insert molding (or insert injection molding) process so that the second main body portion 535, the plurality of second pressing portions 536 and the second fixing portion 537 are formed integrally. However, the manufacturing process of the second connecting member 534 is not limited to insert molding.

[0260] In an embodiment, the second body portion 535 may support a plurality of second pressing portions 536 and a second fixing portion 537. For example, a plurality of second pressing portions 536 elastically connected to the second rod 532 and a second fixing portion 537 connected to the guide members 460 and 470 may be coupled to opposite sides of the second body portion 535.

[0261] In an embodiment, the plurality of second pressing portions 536 may surround at least a portion of the outer circumferential surface of the second rod 532. The plurality of second pressing portions 536 may include a third portion 536a and a fourth portion 536b. The third portion 536a and the fourth portion 536b may contact the second rod 532. When the plurality of second pressing portions 536 and the second rod 532 are observed in the optical axis directions ① and ②, the plurality of second pressing portions 536 and the second rod 532 may be connected in a three-point contact structure. For example, the plurality of second pressing portions 536 may be configured so that the third portion 536a makes two-point contact with the second rod 532, and the fourth portion 536b makes one-point contact with the second rod 532. According to the illustrated embodiment, the third portion 536a may be partially bent to form a two-point contact with the second rod 532.

[0262] The plurality of second pressing portions 536 may contact the second rod 532 disposed between the third portion 536a and the fourth portion 536b while maintaining a predetermined preload. For example, the plurality of second pressing portions 536 may contact the outer circumferential surface of the second rod 532 while elastically pressing the second rod 532. The plurality of second pressing portions 536 may be configured so that the third portion 536a and the fourth portion 536b apply a preload to the second rod 532 in opposite directions. For example, the third portion 536a may apply a preload P6 to the second rod 532 in a direction toward the fourth portion 536b, and the fourth portion 536b may apply a preload P7 to the second rod 532 in a direction toward the third portion 536a. Since the plurality of second pressing portions 536 are divided into the third portion 536a and the fourth portion 536b, the second connecting member 534 according to an embodiment of the present disclosure may easily adjust the preload applied to the second rod 532.

[0263] The plurality of second pressing portions 536 may be formed to have elastic force. For example, the third portion 536a and the fourth portion 536b may be formed of a leaf spring of a metal material, but are not limited thereto. When the plurality of second pressing portions 536 are elastically coupled to the second rod 532, based on the deformation speed of the second piezoelectric element 531 (or the moving speed of the second rod 532) (e.g., stick-slip motion), the second connecting member 534 may move with the second rod 532 or may not move with the second rod 532. For example, when the second rod 532 moves at a speed lower than a predetermined speed, the second connecting member 534 may move with the second rod 532, and when the second rod 532 moves at a speed higher than a predetermined speed, the second connecting member 534 may not move with the second rod 532. In other words, the ratio of the speed of the second rod 532 to the speed of the second connecting member 534 may vary according to the deformation speed of the second piezoelectric element 531. The following will refer to Fig.20b An operation of the second connecting member 534 moving in the second piezoelectric motor 530 is described in detail.

[0264] In an embodiment, the second fixing portion 537 may be coupled to the guide members 460 and 470. For example, the second fixing portion 537 may be fixedly coupled to the guide members 460 and 470 so as to move together with the guide members 460 and 470 (see, for example, Fig.17). For example, when the first guide member 460 is connected to the second connecting member 534 through the second fixing portion 537 of the first sub piezoelectric motor 530-1, the first guide member 460 may move together with the second connecting member 534 when the second connecting member 534 moves on the second rod 532 in the direction of the first displacement axis S1. When the second guide member 470 is connected to the second connecting member 534 through the second fixing portion 537 of the second sub piezoelectric motor 530-2, the second guide member 470 may move together with the second connecting member 534 when the second connecting member 534 moves on the second rod 532 in the direction of the second displacement axis S2.

[0265] Fig.16 2 is a view showing the operation of the second piezoelectric motor according to the embodiment.

[0266] Reference Fig.16 The second piezoelectric motor 530 according to the embodiment may include a second piezoelectric element 531 , a second rod 532 , and a weight 533 , wherein the second rod 532 is attached to one side of the second piezoelectric element 531 , and the weight 533 is attached to the opposite side of the second piezoelectric element 531 . Fig.16 is to omit the second connecting member (for example, Fig.15a and Fig.15b 534).

[0267] In an embodiment, the second piezoelectric motor 530 may be configured such that the second rod 532 is displaced by the expansion and contraction of the second piezoelectric element 531 (eg, Fig.13 and Fig.14 When the second piezoelectric element 531 is supported by the counterweight 533, the expansion or contraction of the second piezoelectric element 531 can be converted into a linear movement of the second rod 532. For example, the second piezoelectric element 531 can expand or contract in the direction of the displacement axes S1 and S2 based on the voltage applied thereto. The second rod 532 can move linearly in the direction of the displacement axes S1 and S2 by the expansion or contraction of the second piezoelectric element 531.

[0268] In an embodiment, the second piezoelectric element 531 may be deformed when contracted or expanded, so that when the second end 5312 of the second piezoelectric element 531 is supported by the counterweight 533, the first end 5311 of the second piezoelectric element 531 moves away from or toward the second end 5312. The second rod 532 may be coupled to the first end 5311 of the second piezoelectric element 531 and may move together with the first end 5311. The second rod 532 may maintain a predetermined length and may perform linear motion in the directions of the displacement axes S1 and S2 relative to the second end 5312 or the counterweight 533 when the second piezoelectric element 533 is expanded and contracted. For example, in a default state where a voltage is not applied to the second piezoelectric element 531, one end 5311 of the second rod 532 may be located at a first distance L1 from the counterweight 533.

[0269] Reference occurs from Fig.16 In the operation of deformation from the middle figure to the lower figure, the second piezoelectric motor 531 can receive a voltage for expanding the second piezoelectric element 531 in the longitudinal direction (for example, the direction of the displacement axes S1 and S2). The second piezoelectric element 531 can expand while the second end 5312 is supported by the counterweight 533 and the first end 5311 moves in one direction ③ relative to the second end 5312 or the counterweight 533. When the second piezoelectric element 531 expands in the direction of the displacement axes S1 and S2, the second rod 532 can move in one direction ③ (for example, a direction away from the counterweight 533), and the distance from the counterweight 533 to one end 5311 of the second rod 532 can be a second distance L2 greater than the first distance L1.

[0270] Reference from Fig.16 In the operation of deformation from the middle figure to the upper figure in the figure, the second piezoelectric motor 531 may receive a voltage for contracting the second piezoelectric element 531 in the longitudinal direction (e.g., the direction of the displacement axes S1 and S2). The second piezoelectric element 531 may contract while the second end 5312 is supported by the counterweight 533 and the first end 5311 moves in a direction ④ opposite to one direction ③ relative to the second end 5312 or the counterweight 533. When the second piezoelectric element 531 contracts in the direction of the displacement axes S1 and S2, the second rod 532 may move in a direction ④ opposite to one direction ③ (e.g., in a direction toward the counterweight 533), and the distance from the counterweight 533 to one end 5311 of the second rod 532 may be a third distance L3 that is smaller than the first distance L1.

[0271] Fig.17 is a view illustrating a coupling structure of a guide member and a second piezoelectric motor of a camera module according to an embodiment.

[0272] Reference Fig.17, the camera module 400 according to the embodiment may include a second carrier 450 , a first guide member 460 , a second guide member 470 , and a second piezoelectric motor 530 .

[0273] In an embodiment, the second carrier 450 may receive the driving force of the second piezoelectric motor 530 through the first guide member 460 and the second guide member 470 without being directly connected to the second piezoelectric motor 530. For example, the second carrier 450 may receive the driving force of the first sub-piezoelectric motor 530-1 through the first guide member 460, and may receive the driving force of the second sub-piezoelectric motor 530-2 through the second guide member 470.

[0274] The movement of the second carrier 450 relative to the second guide member 460 in the direction of the first displacement axis S1 may be restricted, and the second carrier 450 may be movable in the direction of the second displacement axis S2. The first guide member 460 may be movable in the direction of the first displacement axis S1 due to the driving force of the first sub-piezoelectric motor 530-1, and the second carrier 450 may be movable in the direction of the first displacement axis S1 together with the first guide member 460.

[0275] The movement of the second carrier 450 relative to the second guide member 470 in the direction of the second displacement axis S2 may be restricted, and the second carrier 450 may be movable in the direction of the first displacement axis S1. The second guide member 470 may be movable in the direction of the second displacement axis S2 due to the driving force of the second sub-piezoelectric motor 530-2, and the second carrier 450 may be movable in the direction of the second displacement axis S2 together with the second guide member 470. Since the second carrier 450 is movable relative to the second guide member 470 in the direction of the first displacement axis S1, the second carrier 450 may be movable relative to the second guide member 470 in the direction of the first displacement axis S1 together with the first guide member 460.

[0276] In the operation of moving the second carrier 450 in the direction of the first shift axis S1, the first sub piezoelectric motor 530-1 may apply a driving force for moving in the direction of the first shift axis S1 to the first guide member 460. When the first guide member 460 moves in the direction of the first shift axis S1, the second carrier 450 may move together with the first guide member 460 because movement between the first guide member 460 and the second carrier 450 in the direction of the first shift axis S1 is restricted, and the second guide member 470 may be separated from movement of the second carrier 450 and not move together with the second carrier 450 because movement between the second guide member 470 and the second carrier 450 in the direction of the first shift axis S1 is enabled.

[0277] In the operation of moving the second carrier 450 in the direction of the second shift axis S2, the second sub piezoelectric motor 530-2 may apply a driving force for moving in the direction of the second shift axis S2 to the second guide member 470. When the second guide member 470 moves in the direction of the second shift axis S1, the second carrier 450 may move together with the second guide member 470 because movement between the second guide member 470 and the second carrier 450 in the direction of the second shift axis S2 is restricted, and the first guide member 460 may be separated from movement of the second carrier 450 and not move together with the second carrier 450 because movement between the first guide member 460 and the second carrier 450 in the direction of the second shift axis S2 is enabled.

[0278] In an embodiment, the first guide member 460 may include a first connection portion 461 to which the first sub-piezoelectric motor 530-1 is connected. The first connection portion 461 may be formed on an upper surface (eg, Fig.14 460a). For example, the first connecting portion 461 may protrude from the second upper surface 460a to be substantially perpendicular to the second upper surface 460a. At least a portion of the second connecting member 534 of the first sub-piezoelectric motor 530-1 may be coupled to the first connecting portion 461. The first connecting portion 461 may have a coupling recess 461a formed therein, wherein the curved portion 537a of the second fixed portion 537 of the first sub-piezoelectric motor 530-1 is accommodated in the coupling recess 461a. For example, the curved portion 537a of the second fixed portion 537 may be partially accommodated in the coupling recess 461a, and a coupling member (not shown) movably coupled to the curved portion 537a may be accommodated in the coupling recess 461a. For example, the coupling member may provide a specified level of coupling force (or restraining force) so that the second fixed portion 537 is not separated from the first guide member 460, and may be coupled to the curved portion 537a so as to be movable within a predetermined range.

[0279] In an embodiment, the second guide member 470 may include a first portion 471, a second portion 472, a third portion 473, and a second connection portion 474, wherein the second portion 472 extends from the first portion 471 in the direction of the first displacement axis S1, the third portion 473 extends from the first portion 471 in the direction of the second displacement axis S2, and the second connection portion 474 is formed on the first portion 471. The second connection portion 474 connected to the second sub-piezoelectric motor 530-2 may be formed on the first portion 471 of the second guide member 470. The second connection portion 474 may protrude from one surface (e.g., a surface facing the +z-axis direction) of the first portion 471 so as to be substantially perpendicular to one surface of the first portion 471. At least a portion of the second connection member 534 of the second sub-piezoelectric motor 530-2 may be coupled to the second connection portion 474. The second connection portion 474 may have a coupling recess (not shown) in which the bent portion 537a of the second fixing portion 537 of the second sub-piezoelectric motor 530-2 is accommodated. The method in which the second fixing portion 537 of the first sub piezoelectric motor 530 - 1 is coupled to the first connecting portion 461 through a coupling member may be similarly applied to the second sub piezoelectric motor 530 - 2 and the second connecting portion 474 .

[0280] Fig.18a is a view illustrating a second carrier, a first guide member, and a second guide member of a camera module according to an embodiment. Fig.18b is a view illustrating a second carrier, a first guide member, and a second guide member of a camera module according to an embodiment.

[0281] Fig.18a It is an exploded perspective view of the second carrier, the first guide member, and the second guide member as viewed from above. Fig.18b is an exploded perspective view of the second carrier, the first guide member, and the second guide member as viewed from below the second carrier.

[0282] Reference Fig.18a and Fig.18b The second guide member 470, the second carrier 450, and the first guide member 460 may be aligned in the direction of the optical axis OA and may be sequentially arranged in the direction of the optical axis OA. The second guide member 470, the second carrier 450, and the first guide member 460 may include a plurality of guide grooves 462, 463, 455, 456, 475, and 476 for guiding the movement of the second carrier 450 in the directions of the first shift axis S1 and the second shift axis S2.

[0283] In an embodiment, the first guide member 460 may include a second upper surface 460a and a second lower surface 460b, wherein the second carrier 450 is disposed on the second upper surface 460a, and the second lower surface 460b faces away from the second upper surface 460a. The first guide member 460 may include a plurality of fifth grooves 463 for guiding movement between the first guide member 460 and the base 413, and a plurality of sixth grooves 462 for guiding movement between the first guide member 460 and the second carrier 450.

[0284] The second lower surface 460b of the first guide member 460 may face the base (eg, Fig.14 The first support surface of the base 413 (eg, Fig.14 The first supporting surface 415 of the base 413 is aligned with a plurality of fourth grooves (eg, Fig.14 A plurality of fifth grooves 463 aligned with the plurality of fourth grooves 419 of the first guide member 460 may be formed on the second lower surface 460b. The plurality of fourth grooves 419 and the plurality of fifth grooves 463 may be formed in a shape extending in the direction of the first displacement axis S1. The plurality of fourth grooves 419 and the plurality of fifth grooves 463 may face each other in a state where the first guide member 460 is placed on the base 413.

[0285] The plurality of fourth grooves 419 and the plurality of fifth grooves 463 may form or define a space for accommodating the plurality of third balls 483. The plurality of third balls 483 may be disposed between the base 413 and the first guide member 460. The plurality of third balls 483 may be accommodated in the space between the plurality of fourth grooves 419 and the plurality of fifth grooves 463 so as to perform a rotational motion and / or a rolling motion. For example, when the first guide member 460 moves in the direction of the first displacement axis S1 relative to the base 413, the plurality of third balls 483 may rotate while linearly moving in the direction of the first displacement axis S1 between the plurality of fourth grooves 419 and the plurality of fifth grooves 463, or may rotate in an appropriate position.

[0286] The second upper surface 460a of the first guide member 460 may face the first lower surface 450b of the second carrier 450. A plurality of sixth grooves 462 may be formed in the second upper surface 460a and have a shape extending in the direction of the second shift axis S2.

[0287] In an embodiment, the second carrier 450 may include a first upper surface 450a and a first lower surface 450b opposite to the first upper surface 450a, wherein the second guide member 470 is disposed on the first upper surface 450a. The second carrier 450 may include a plurality of seventh grooves 456 for guiding movement between the second carrier 450 and the first guide member 460 and a plurality of eighth grooves 455 for guiding movement between the second carrier 450 and the second guide member 470.

[0288] The first lower surface 450b of the second carrier 450 may face the second upper surface 460a of the first guide member 460. A plurality of seventh grooves 456 aligned with the plurality of sixth grooves 462 of the first guide member 460 in the direction of the optical axis OA may be formed in the first lower surface 450b. The plurality of seventh grooves 456 may be formed in a shape extending in the direction of the second displacement axis S2 to correspond to the plurality of sixth grooves 462. In a state where the second carrier 450 is placed on the first guide member 460, the plurality of sixth grooves 462 and the plurality of seventh grooves 456 may face each other.

[0289] The plurality of sixth grooves 462 and the plurality of seventh grooves 456 may form or define a space for accommodating the plurality of fourth balls 484. The plurality of fourth balls 484 may be disposed between the first guide member 460 and the second carrier 450. The plurality of fourth balls 484 may be accommodated in the space between the plurality of sixth grooves 462 and the plurality of seventh grooves 456 so as to perform a rotational motion and / or a rolling motion. For example, when the second carrier 450 moves in the direction of the second displacement axis S2 relative to the first guide member 460, the plurality of fourth balls 484 may rotate while linearly moving in the direction of the second displacement axis S2 between the plurality of sixth grooves 462 and the plurality of seventh grooves 456, or may rotate in an appropriate position.

[0290] The first upper surface 450a of the second carrier 450 may face the second guide member 470. A plurality of eighth grooves 455 having a shape extending in the direction of the first shift axis S1 may be formed in the first upper surface 450a.

[0291] In an embodiment, the second guide member 470 may include a first portion 471, a second portion 472, and a third portion 473, the second connecting portion 474 is formed on the first portion 471, the second portion 472 extends from the first portion 471 in the direction of the first displacement axis S1, and the third portion 473 extends from the first portion 471 in the direction of the second displacement axis S2. The second guide member 470 may include a plurality of ninth grooves 476 for guiding the movement between the second guide member 470 and the second carrier 450 and a plurality of ninth grooves 476 for guiding the movement between the second guide member 470 and the second carrier 450 and a plurality of ninth grooves 476 for guiding the movement between the second guide member 470 and the second spring member (e.g., Fig.13 and Fig.14 A plurality of tenth slots 475 are movable between the second spring member 495).

[0292] The second portion 472 of the second guide member 470 may include a plurality of ninth grooves 476, wherein the plurality of ninth grooves 476 are formed on one surface (e.g., a surface facing the -z axis direction) facing the second carrier 450. The plurality of ninth grooves 476 may be aligned with the eighth grooves 455 of the second carrier 450 in the direction of the optical axis OS. The plurality of ninth grooves 476 may be formed in a shape extending in the direction of the first displacement axis S1 to correspond to the plurality of eighth grooves 455. In a state where the second guide member 470 is placed on the second carrier 450, the plurality of eighth grooves 455 and the plurality of ninth grooves 476 may face each other.

[0293] The plurality of eighth grooves 455 and the plurality of ninth grooves 476 may form or define a space for accommodating the plurality of fifth balls 485. The plurality of fifth balls 485 may be disposed between the second carrier 450 and the second guide member 470. The plurality of fifth balls 485 may be accommodated in the space between the plurality of eighth grooves 455 and the plurality of ninth grooves 476 so as to perform a rotational motion and / or a rolling motion. For example, when the second carrier 450 moves in the direction of the first displacement axis S1 relative to the second guide member 470, the plurality of fifth balls 485 may rotate while linearly moving in the direction of the first displacement axis S1 between the plurality of eighth grooves 455 and the plurality of ninth grooves 476, or may rotate in an appropriate position.

[0294] The first part 471 and the second part 472 of the second guide member 470 may have a plurality of tenth grooves 475, wherein the plurality of tenth grooves 475 are formed on a surface opposite to the surface on which the plurality of ninth grooves 476 are formed (e.g., a surface facing the +z-axis direction). For example, the plurality of tenth grooves 475 may be formed on a surface facing the second spring member 495. The plurality of sixth balls 486 may be accommodated in the plurality of tenth grooves 475 so as to be able to rotate. The plurality of tenth grooves 475 may be formed in a cylindrical groove shape corresponding to the plurality of sixth balls 486 without extending in the direction of the displacement axes S1 and S2. The plurality of sixth balls 486 may contact the second spring member 495 in a state of being accommodated in the plurality of tenth grooves 475. When the second guide member 470 moves relative to the second spring member 495, the plurality of sixth balls 486 may rotate in the space between the second spring member 495 and the plurality of tenth grooves 475.

[0295] Fig.19 is a view showing an electrical connection structure between a substrate member and a piezoelectric motor of a camera module according to an embodiment.

[0296] Reference Fig.19 , according to the camera module of the embodiment (eg, Figure 5 The camera module 400 may include a base 413 of a camera housing 410 , a first carrier 440 , a motor holder 493 , a substrate member 492 , a first piezoelectric motor 510 , and a second piezoelectric motor 530 .

[0297] In an embodiment, the substrate member 492 may include a first sub-substrate 492a disposed on the base 413, and a second sub-substrate 492b, a third sub-substrate 492c, and a fourth sub-substrate 492d extending from the first sub-substrate 492a. According to various embodiments, the substrate member 492 may include a printed circuit board (PCB), a flexible printed circuit board (FPCB), or a rigid-flexible printed circuit board (RFPCB). Fig.19 The number, shape, or position of the substrate members 492 shown in FIG. 4 is exemplary and is not limited to the illustrated embodiment.

[0298] In an embodiment, the first sub-substrate 492a may be disposed on a surface of the base 413 (eg, a surface facing the +z-axis direction or Figure 5 For example, the first sub-substrate 492a may be attached to one surface facing the first carrier 440 and the motor holder 493. An opening area (not shown) corresponding to the second opening 417 of the base 413 may be formed in the first sub-substrate 492a.

[0299] In an embodiment, the second sub-substrate 492b, the third sub-substrate 492c, and the fourth sub-substrate 492d may extend from the first sub-substrate 492a toward the first piezoelectric motor 510 and the second piezoelectric motor 530. The second sub-substrate 492b may be electrically connected to the first piezoelectric motor 510, and the third sub-substrate 492c and the fourth sub-substrate 492d may be electrically connected to the plurality of second piezoelectric motors 530. The third sub-substrate 492c may be electrically connected to the first sub-piezoelectric motor 530-1, and the fourth sub-substrate 492d may be electrically connected to the second sub-piezoelectric motor 530-2. For example, the first sub-substrate 492a may be connected to the first piezoelectric element 511 to apply an electrical signal to the first piezoelectric element 511 of the first piezoelectric motor 510. The second sub-substrate 492b and the third sub-substrate 492c may be connected to the second piezoelectric element 531 to apply an electrical signal to the second piezoelectric element 531 of the second piezoelectric motor 530.

[0300] When the second piezoelectric motor 530 is driven, the third sub-substrate 492c and the fourth sub-substrate 492d may be fixed without moving. For example, the first sub-piezoelectric motor 530-1 and the second sub-piezoelectric motor 530-2 of the second piezoelectric motor 530 may be supported on the motor holder 493 fixed to the base 413. The first sub-piezoelectric motor 530-1 and the second sub-piezoelectric motor 530-2 may not interfere with or hinder each other when being driven. As described above with reference to Fig.13 and Fig.14As described, according to an embodiment of the present disclosure, the second carrier 450 may not be directly connected to the first sub-piezoelectric motor 530-1 and the second sub-piezoelectric motor 530-2, and may receive a driving force through the first guide member 460 and the second guide member 470. For example, since the second piezoelectric motor 530 is not directly connected to the second carrier 450 that moves along two axes perpendicular to each other, the second sub-piezoelectric motor 530-2 may not move together with the second carrier 450 so as not to hinder or restrict the driving of the first sub-piezoelectric motor 530-1 when the first sub-piezoelectric motor 530-1 is driven, and the first sub-piezoelectric motor 530-1 does not have to move together with the second carrier 450 so as not to hinder or restrict the driving of the second sub-piezoelectric motor 530-2 when the second sub-piezoelectric motor 530-2 is driven.

[0301] The third sub-substrate 492c is independent of the drive of the first sub-piezoelectric motor 530-1 and does not have to move in response to the drive of the first sub-piezoelectric motor 530-1. The fourth sub-substrate 492d is independent of the drive of the second sub-piezoelectric motor 530-2 and does not have to move in response to the drive of the second sub-piezoelectric motor 530-2. According to an embodiment of the present disclosure, a design that avoids providing movement of the FPCB connected to another shift axis so as not to hinder the structure of the OIS operation using one shift axis can be implemented.

[0302] Fig.20a 2 is a view showing a moving operation of a first connecting member in a first piezoelectric motor according to an embodiment. Fig.20b 2 is a view showing a moving operation of a second connecting member in a second piezoelectric motor according to the embodiment. Fig.20c is a graph depicting a moving operation of a connecting member in a first piezoelectric motor and a second piezoelectric motor according to an embodiment.

[0303] Reference Fig.20a , Fig.20b and Fig.20c , the camera module 400 according to the embodiment may include a first piezoelectric motor 510 for an AF function and a second piezoelectric motor 530 for an OIS function. The first piezoelectric motor 510 may include a first piezoelectric element 511, an elastic body 512, a first rod 513, and a first connecting member 514. The second piezoelectric motor 530 may include a second piezoelectric element 531, a second rod 532, a weight 533, and a second connecting member 534.

[0304] In an embodiment, the piezoelectric motors 510 and 530 may be operated using a smooth impact drive mechanism (SIDM). For example, the operating principle of a general SIDM may be based on inertial force and friction force, and may be understood as a stick-slip motion. When the piezoelectric elements 511 and 531 contract or expand slowly, the rods 513 and 532 may move at a low speed and may move together with the connecting members 514 and 534 (e.g., an adhesion motion). Conversely, when the piezoelectric elements 511 and 531 contract or expand rapidly, the rods 513 and 532 may move relative to the connecting members 514 and 534 without moving at a high speed together with the connecting members 514 and 534 (e.g., a sliding motion). In other words, the ratio of the speed of the rods 513 and 532 to the speed of the connecting members 514 and 534 may vary depending on the speed of contraction or expansion of the piezoelectric elements 511 and 531. For example, the first carrier (e.g., Fig.12 The first carrier 440 of the embodiment of the present invention can be moved by the movement of the first connecting member 514, and the first guide member and the second guide member (eg, Fig.17 The first guide member 460 and the second guide member 470 may be moved by movement of the second connecting member 534 .

[0305] Reference Fig.20a , the first piezoelectric motor 510 may be driven in a first operation M1 and a second operation M2, and may move the first connecting member 514 on the first rod 513. In the first movement M1, the first piezoelectric element 511 may be slowly contracted, the first rod 513 may be slowly moved in the second optical axis direction ②, and when the first connecting member 514 and the first rod 513 are in pressure contact with each other, the first connecting member 514 may be moved by the friction force between the first connecting member 514 and the first rod 513 together with the first rod 513 in the second optical axis direction ② by a first distance d1. In the second movement M2, the first piezoelectric element 511 may expand faster than the first movement M1, the first rod 513 may quickly move the first distance d1 in the first optical axis direction ①, and the first connecting member 514 may not move together with the first rod 513 due to the inertial force of the first connecting member 514, and may be maintained at a position moved by the first movement M1 while sliding from the first rod 513, or may move a distance shorter than the first distance d1 in the first optical axis direction ①. According to the illustrated embodiment, when the first movement M1 and the second movement M2 are performed, the first connecting member 514 may move the second distance d2 which is smaller than the first distance d1. However, the present disclosure is not limited thereto, and according to various embodiments, the first distance d1 and the second distance d2 may be substantially the same as each other.

[0306] Fig.20aThe operation of the first piezoelectric motor 510 for moving the first connecting member 514 in the second optical axis direction is shown, and the moving direction of the first connecting member 514 can be changed according to the direction in which the first piezoelectric element 511 is deformed in the first movement M1 and the second movement M2. For example, when the first piezoelectric element 511 slowly expands in the first movement M1 and quickly contracts in the second movement M2, the first piezoelectric motor 510 can move the first connecting member 514 in the first optical axis direction ①.

[0307] Reference Fig.20b , the second piezoelectric motor 530 may be driven in the first operation M1 and the second operation M2, and may move the second connecting member 534 on the second rod 532. In the first movement M1, the second piezoelectric element 531 may slowly expand, the second rod 532 may slowly move in one direction (e.g., direction ③ away from the counterweight 533), and when the second connecting member 534 and the second rod 532 are in pressure contact with each other, the second connecting member 534 may move together with the second rod 532 in one direction ③ by a friction force between the second connecting member 534 and the second rod 532 by a first distance d1. In the second movement M2, the second piezoelectric element 531 may contract faster than in the first movement M1, the second rod 532 may quickly move the first distance d1 in the direction opposite to the one direction (e.g., the direction ④ toward the counterweight 533), and the second connecting member 534 may not move with the second rod 532 due to the inertial force of the second connecting member 534, and may be maintained at a position moved by the first movement M1 while sliding from the second rod 532, or may move a distance shorter than the first distance d1 in the direction ④ opposite to the one direction ③. According to the illustrated embodiment, when the first movement M1 and the second movement M2 are performed, the second connecting member 534 may move the second distance d2 which is smaller than the first distance d1. However, the present disclosure is not limited thereto, and according to various embodiments, the first distance d1 and the second distance d2 may be substantially the same as each other.

[0308] Fig.20b The operation of the second piezoelectric motor 530 for moving the second connecting member 534 in a direction ③ away from the counterweight 533 is shown, and the moving direction of the second connecting member 534 can be changed according to the direction in which the second piezoelectric element 531 is deformed in the first movement M1 and the second movement M2. For example, when the second piezoelectric element 531 is slowly contracted in the first movement M1 and quickly expanded in the second movement M2, the second piezoelectric motor 530 can move the second connecting member 534 in a direction ④ toward the counterweight 533.

[0309] Fig.20c2 is a graph depicting changes in the positions of the first and second rods 513 and 532 and the first and second connecting members 514 and 534 over time. In the graph, a solid line 2001 represents displacements of the first and second rods 513 and 532 according to contraction or expansion of the first and second piezoelectric elements 511 and 531, and a dotted line 2003 represents displacements of the first and second connecting members 514 and 534. For example, since the first and second rods 513 and 532 move faster in the second motion M2 than in the first motion M1, the slope of the solid line 2001 in the time interval for performing the second motion M2 may be greater than the slope in the time interval for performing the first motion M1.

[0310] In an embodiment, the first piezoelectric motor 510 and the second piezoelectric motor 530 may move the first connection member 514 and the second connection member 534 by a desired distance by repeating the first motion M1 and the second motion M2. For example, when the first motion M1 and the second motion M2 are performed once, the first connection member 514 and the second connection member 534 may move the second distance d2, and by repeating the first motion M1 and the second motion M2, the first connection member 514 and the second connection member 534 may move the desired distance. For example, when the first motion M1 and the second motion M2 are repeated three times, the first connection member 514 and the second connection member 534 may move about three times the second distance d2.

[0311] Because the friction between the first rod 513 and the first connecting member 514 and the second rod 532 and the second connecting member 534 is greater than the inertia of the first connecting member 514 and the second connecting member 534, the first movement M1 can be performed, and the first movement M1 can be understood as a sticking movement. Because the inertia of the first connecting member 514 and the second connecting member 534 is greater than the friction between the first rod 513 and the first connecting member 514 and the second rod 532 and the second connecting member 534, the second movement M2 can be performed, and the second movement M2 can be understood as a sliding movement.

[0312] Fig.21 2 is a view showing a camera housing, a second carrier, and a second piezoelectric motor of a camera module according to an embodiment. Fig. 22 2 is a view showing a camera housing, a second carrier, and a second piezoelectric motor of a camera module according to an embodiment. Fig.23 2 is a view showing a camera housing, a second carrier, and a second piezoelectric motor of a camera module according to an embodiment.

[0313] Fig.21 , Fig. 22 and Fig.23 is shown with reference to above Fig.17Compared to the described embodiment, the connection structure between the second carrier and the second piezoelectric motor is changed.

[0314] Reference Fig.21 , Fig. 22 and Fig.23 , according to the camera module of the embodiment (eg, Figure 4a , Figure 4b and Figure 5 The camera module 400 may include a camera housing 410 (eg, Figure 5 camera housing 410 or base 413), a second carrier 450' (eg, Figure 5 The second carrier 450), the second piezoelectric motor 530 (for example, Figure 5 The second piezoelectric motor 530) and the guide balls 488 and 489. The camera housing 410 may be referred to as a base 413. For example, Figure 21 to Figure 23 Shown with Fig.17 Compared with the embodiment shown, the structure of the second carrier 450' and the structure of the second connecting member 534 of the second piezoelectric motor 530 are changed, and the guide member (eg, Fig.17 An embodiment of the guide members 460 and 470).

[0315] In an embodiment, the second carrier 450' may be moved in the direction of the first displacement axis S1 due to the first sub-piezoelectric motor 530-1, and may be moved in the direction of the second displacement axis S2 due to the second sub-piezoelectric motor 530-2. The second carrier 450' may include a connecting portion 459, wherein the second piezoelectric motor 530 is connected to the connecting portion 459. The connecting portion 459 may be formed on a side surface of the second carrier 450'. The connecting portion 459 may include a first connecting portion 459-1 connected to the first sub-piezoelectric motor 530-1 and a second connecting portion 459-2 connected to the second sub-piezoelectric motor 530-2. The first connecting portion 459-1 may receive a driving force from the first sub-piezoelectric motor 530-1, and the second connecting portion 459-2 may receive a driving force from the second sub-piezoelectric motor 530-2.

[0316] In an embodiment, the movement of the first connection portion 459-1 in the direction of the first displacement axis S1 relative to the second connection member 534 of the first sub-piezoelectric motor 530-1 may be constrained, and the first connection portion 459-1 may be freely movable in the direction of the second displacement axis S2. The movement of the second connection portion 459-2 in the direction of the second displacement axis S2 relative to the second connection member 534 of the second sub-piezoelectric motor 530-2 may be constrained, and the second connection portion 459-2 may be freely movable in the direction of the first displacement axis S1.

[0317] The first connection portion 459-1 is movable relative to the first sub-piezoelectric motor 530-1 in the direction of the second displacement axis S2, so that the second carrier 450' moves in the direction of the second displacement axis S2 due to the second sub-piezoelectric motor 530-2. The second connection portion 459-2 is movable relative to the second sub-piezoelectric motor 530-2 in the direction of the first displacement axis S1, so that the second carrier 450' moves in the direction of the first displacement axis S1 due to the first sub-piezoelectric motor 530-1.

[0318] A guide rail 459a and a guide groove 459b formed on opposite sides of the guide rail 459a may be formed in each of the first connection portion 459-1 and the second connection portion 459-2, wherein the guide protrusion 539a of the second piezoelectric motor 530 is accommodated in the guide rail 459a, and the guide balls 488 and 489 are accommodated in the guide groove 459b. The guide rail 459a and the guide groove 459b of the first connection portion 459-1 may be formed in a shape extending in the direction of the second displacement axis S2. The guide rail 459a and the guide groove 459b of the second connection portion 459-2 may be formed in a shape extending in the direction of the first displacement axis S1.

[0319] In an embodiment, the second piezoelectric motor 530 may include a second piezoelectric element 531, a second rod 532, a weight 533, and a second connecting member 534. The second connecting member 534 may include a second pressing portion 536 and a guide portion 539 coupled to the second pressing portion 536. For example, Fig.21 and Fig. 22 The second piezoelectric element 531, the second rod 532, the weight 533, and the second pressing portion 536 of the second connecting member 534 of the second piezoelectric motor 530 shown in FIG. Fig.15a and Fig.15b The components included in the second piezoelectric motor 530 are shown to be substantially the same or similar. Hereinafter, repeated descriptions will be omitted, and the following description will focus on the changed contents.

[0320] In an embodiment, the second connecting member 534 may include a guide portion 539 for guiding the movement of the second carrier 450'. The guide portion 539 may be coupled to one side of the second pressing portion 536 elastically coupled to the second rod 532. The guide portion 539 may be coupled to the second carrier 450'. For example, the guide portion 539 may be coupled to the connecting portion 459 of the second carrier 450'. The guide portion 539 may include a guide protrusion 539a corresponding to the guide rail 459a formed in the connecting portion 459. The guide protrusion 539a may be accommodated in the guide rail 459a. The guide protrusion 539a may be movable in the guide rail 459a in the extension direction of the guide rail 459a.

[0321] In an embodiment, the guide protrusion 539a coupled to the guide rail 459a can guide the second carrier 450' so that the second carrier 450' can move in one direction of the displacement axes S1 and S2 relative to the guide portion 539, and the movement of the second carrier 450' in a direction perpendicular to the one direction is restricted.

[0322] The guide protrusion 539a of the first sub-piezoelectric motor 530-1 may be formed in a shape extending in the direction of the second displacement axis S2. The guide protrusion 539a of the first sub-piezoelectric motor 530-1 may transmit the driving force of the first sub-piezoelectric motor 530-1 to the second carrier 450' so that the second carrier 450' moves in the direction of the first displacement axis S1. For example, since the movement of the guide protrusion 539a of the first sub-piezoelectric motor 530-1 relative to the first connecting portion 459-1 in the direction of the first displacement axis S1 is restricted, the guide protrusion 539a of the first sub-piezoelectric motor 530-1 may transmit the driving force of the first sub-piezoelectric motor 530-1 to the second carrier 450'. Since the guide protrusion 539a of the first sub-piezoelectric motor 530-1 is movable in the direction of the second displacement axis S2 relative to the guide rail 459a, the second carrier 450' may not be constrained by the guide protrusion 539a when moving in the direction of the second displacement axis S2.

[0323] The guide protrusion 539a of the second sub-piezoelectric motor 530-2 may be formed in a shape extending in the direction of the first displacement axis S1. The guide protrusion 539a of the second sub-piezoelectric motor 530-2 may transmit the driving force of the second sub-piezoelectric motor 530-2 to the second carrier 450' so that the second carrier 450' moves in the direction of the second displacement axis S2. For example, since the movement of the guide protrusion 539a of the second sub-piezoelectric motor 530-2 relative to the second connecting portion 459-2 in the direction of the second displacement axis S2 is restricted, the guide protrusion 539a of the second sub-piezoelectric motor 530-2 may transmit the driving force of the second sub-piezoelectric motor 530-2 to the second carrier 450'. Since the guide protrusion 539a of the second sub-piezoelectric motor 530-2 is movable in the direction of the first displacement axis S1 relative to the guide rail 459a, the second carrier 450' may not be constrained by the guide protrusion 539a when moving in the direction of the first displacement axis S1.

[0324] In an embodiment, the guide balls 488 and 489 may guide the movement of the second carrier 450' relative to the guide portion 539 of the second piezoelectric motor 530. The guide balls 488 and 489 may include a first guide ball 488 received in the guide groove 459b of the first connection portion 459-1 and a second guide ball 489 received in the guide groove 459b of the second connection portion 459-2.

[0325] The guide balls 488 and 489 may be accommodated in a space between the connection portion 459 and the guide portion 539 so as to perform a rotational motion and / or a rolling motion. For example, when the second carrier 450' moves in the direction of the second displacement axis S2 relative to the base 413, the first guide ball 488 may rotate while linearly moving between the guide portion 539 of the first sub-piezoelectric motor 530-1 and the guide groove 459b of the first connection portion 459-1 in the direction of the second displacement axis S2, or may rotate at an appropriate position. For example, when the second carrier 450' moves in the direction of the first displacement axis S1 relative to the base 413, the second guide ball 489 may rotate while linearly moving between the guide portion 539 of the second sub-piezoelectric motor 530-2 and the guide groove 459b of the second connection portion 459-2 in the direction of the first displacement axis S1, or may rotate at an appropriate position.

[0326] A camera module embedded in an electronic device such as a smartphone may be configured to move a lens using a voice coil motor including a coil and a magnet. A voice coil motor type actuator may increase the weight of the camera module due to the weight of the magnet and the coil, and magnetic interference may occur.

[0327] Alternatively, the camera module may be configured to move the lens using a stepper motor. A stepper motor type actuator may have limitations in the compactness of the camera module due to its large size, and may generate noise due to the operation of the motor.

[0328] Various embodiments of the present disclosure may provide a camera module that performs linear movement of a lens using a piezoelectric motor.

[0329] The camera module 400 according to an embodiment of the present disclosure may include: a camera housing 410; a lens assembly 420, at least a portion of which is disposed in the camera housing, the lens assembly 420 including a lens 421; a first carrier 440, to which the lens assembly is coupled and which is movable relative to the camera housing in the direction of the optical axis OA of the lens; a second carrier 450, on which the first carrier is disposed and which is movable relative to the camera housing in one or more directions S1 and S2 perpendicular to the optical axis; a first piezoelectric motor 510, which is connected to the first carrier and the second carrier and provides a first driving force for moving the first carrier in the direction of the optical axis; and a second piezoelectric motor 530, which is connected to the camera housing and the second carrier and provides a second driving force for moving the second carrier in one or more directions perpendicular to the optical axis. The first carrier may be connected to the second carrier so as to be movable in the direction of the optical axis. In a state where the second piezoelectric motor is disposed in the camera housing, when at least a portion of the second piezoelectric motor moves in a direction perpendicular to the optical axis, the second piezoelectric motor may transmit the second driving force to the second carrier.

[0330] In various embodiments, the first piezoelectric motor may include an elastic body 512, a first piezoelectric element 511, a first rod 513, and a first connecting member 514, wherein the first piezoelectric element 511 is attached to an upper surface 5153 of the elastic body, the first rod 513 is attached to a lower surface 5154 of the elastic body, and the first connecting member 514 is connected to the first rod. The elastic body and the first piezoelectric element may form a vibrator, wherein the vibrator performs bending vibration in the optical axis direction based on a voltage applied to the first piezoelectric element.

[0331] In various embodiments, the second carrier may include a motor support part 453, wherein the first piezoelectric motor is disposed on the motor support part 453. A portion of the elastic body may be coupled to the motor support part. The first connection member may be coupled to the first carrier to move together with the first carrier.

[0332] In various embodiments, a node position N may be defined on the vibrator at which the vibration displacement in the bending vibration is substantially zero. The node position may overlap the vibrator. The elastic body may include a protrusion 517 formed at a position corresponding to the node position of the vibrator.

[0333] In various embodiments, a partial region of the elastic body that overlaps with the node position with reference to the direction of the upper surface may be bonded to the second carrier.

[0334] In various embodiments, the elastic body may include a base portion 515 to which the first piezoelectric element and the first rod are coupled, and an extension portion 516 extending from opposite ends of the base portion that are opposite to each other in the longitudinal direction L of the base portion. The extension portion may be formed to be thicker than the base portion, and may extend the vibration displacement of the vibrator in bending vibration.

[0335] In various embodiments, the first connecting member may include a first main body portion 514a, a plurality of first pressing portions 514b, and a first fixing portion 514c, wherein the plurality of first pressing portions 514b are disposed on one side of the first main body portion and connected to the first rod, and the first fixing portion 514c is disposed on the opposite side of the first main body portion and fixed to the first carrier. The plurality of first pressing portions may have elasticity and may apply a preload P3 or P4 to the first rod.

[0336] In various embodiments, the plurality of first pressing portions may include a first portion 514b-1 and a second portion 514b-2 separated from the first portion. The first portion and the second portion may apply preloads to the first rod in opposite directions.

[0337] In various embodiments, the camera module may further include a first guide member 460, wherein the first guide member 460 is disposed on the base 413 of the camera housing so as to be movable in a direction of a first displacement axis S1 perpendicular to the optical axis. The second carrier may be disposed on the first guide member so as to be movable in a direction of a second displacement axis S2 perpendicular to the optical axis and the first displacement axis.

[0338] In various embodiments, the base may include a first guide groove 419 extending in the direction of the first displacement axis. The first guide member may include a second guide groove 463, wherein the second guide groove 463 extends in the direction of the first displacement axis and overlaps with the first guide groove in the direction of the optical axis. The first guide ball 483 may be accommodated in the space between the first guide groove and the second guide groove.

[0339] In various embodiments, the first guide member may include a third guide groove 462 formed on a surface 460a facing the second carrier, and the third guide groove 462 may extend in the direction of the second shift axis. The second carrier may include a fourth guide groove 456, wherein the fourth guide groove 456 extends in the direction of the second shift axis and overlaps with the third guide groove in the direction of the optical axis. The second guide ball 484 may be accommodated in the space between the third guide groove and the fourth guide groove.

[0340] In various embodiments, the camera module may further include a second guide member 470, wherein the second guide member 470 is disposed on the second carrier so as to be movable in the direction of the first shift axis. The second carrier may be aligned with the first guide member and the second guide member in the direction of the optical axis.

[0341] In various embodiments, the second carrier may include a fifth guide groove 455 formed on a surface 450a facing the second guide member, and the fifth guide groove 455 may extend in the direction of the first shift axis. The second guide member may include a sixth guide groove 476, wherein the sixth guide groove 476 extends in the direction of the first shift axis and overlaps with the fifth guide groove in the direction of the optical axis. The third guide ball 485 may be accommodated in a space between the fourth guide groove and the sixth guide groove.

[0342] In various embodiments, the second piezoelectric motor may include a first sub-piezoelectric motor 530-1 and a second sub-piezoelectric motor 530-2, wherein the first sub-piezoelectric motor 530-1 moves the second carrier in the direction of the first displacement axis, and the second sub-piezoelectric motor 530-2 moves the second carrier in the direction of the second displacement axis. The first sub-piezoelectric motor may be connected to the first guide member, and the second sub-piezoelectric motor may be connected to the second guide member.

[0343] In various embodiments, the second carrier and the first guide member may be connected so that movement of the second carrier relative to the first guide member in the direction of the first displacement axis is restricted, but the second carrier is movable in the direction of the second displacement axis. The second carrier and the second guide member may be connected so that movement of the second carrier relative to the second guide member in the direction of the second displacement axis is restricted, but the second carrier is movable in the direction of the first displacement axis.

[0344] In various embodiments, the first sub piezoelectric motor may apply a driving force to the first guide member in the direction of the first displacement axis. The second carrier may move in the direction of the first displacement axis together with the first guide member, and the second guide member may be separated from movement of the second carrier and the first guide member.

[0345] In various embodiments, the second sub piezoelectric motor may apply a driving force to the second guide member in the direction of the second displacement axis. The second carrier may move together with the second guide member in the direction of the second displacement axis, and the first guide member may be separated from movement of the second carrier and the second guide member.

[0346] In various embodiments, the second piezoelectric motor may be disposed on the base 413 of the camera housing. The first sub-piezoelectric motor may be disposed adjacent to an edge of the base parallel to the first displacement axis. The second sub-piezoelectric motor may be disposed adjacent to an edge of the base parallel to the second displacement axis.

[0347] In various embodiments, the camera module may further include a first elastic member 495 (e.g., a second spring 495) configured such that opposite ends 495a and 495b are fixed to the base 413 of the camera housing and a center portion 495a is in contact with the second guide member. The first elastic member may apply a preload P8 to the second guide member, the second carrier, and the first guide member in a direction toward the base portion.

[0348] In various embodiments, the camera module may further include a second elastic member 494 (eg, Figure 8 The second carrier support part 451 (451-1 and 451-2) may be disposed between opposite ends 494b and 494c of the second elastic member and the side surface 442 of the first carrier. The second elastic member may apply a preload P1 or P2 to the support part in a direction toward the first carrier.

[0349] According to an embodiment of the present disclosure, the camera module may include a guide member that receives the driving force of the piezoelectric motor. Therefore, the lens carrier for AF and the lens carrier for OIS may not be directly connected to the piezoelectric motor, and thus the FPCB for applying power may be fixed without moving.

[0350] Furthermore, according to an embodiment of the present disclosure, a tension structure or an elastic structure for applying a preload may be applied to a camera module, thereby preventing misalignment of a piezoelectric motor and a lens carrier.

[0351] The electronic device according to various embodiments may be one of various types of electronic devices. The electronic device may include, for example, a portable communication device (e.g., a smart phone), a computer device, a portable multimedia device, a portable medical device, a camera, a wearable device, or a household appliance. According to an embodiment of the present disclosure, the electronic device is not limited to those electronic devices described above.

[0352] It should be understood that the various embodiments of the present disclosure and the terms used therein are not intended to limit the technical features set forth herein to specific embodiments, but include various changes, equivalent forms or alternative forms for corresponding embodiments. For the description of the accompanying drawings, similar reference numerals may be used to refer to similar or related elements. It will be understood that, unless the relevant context clearly indicates otherwise, the noun in the singular form corresponding to the term may include one or more things. As used herein, each of the phrases such as "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" may include any one or all possible combinations of the items listed together with the corresponding one of the multiple phrases. As used herein, terms such as "1st" and "2nd" or "first" and "second" may be used to simply distinguish the corresponding component from another component, and do not limit the component in other aspects (e.g., importance or order). It will be understood that if an element (e.g., a first element) is referred to as being "combined with another element (e.g., the second element)", "combined to another element (e.g., the second element)", "connected to another element (e.g., the second element)" or "connected to another element (e.g., the second element)" when the terms "operably" or "communicatively" are used or when the terms "operably" or "communicatively" are not used, it means that the element can be directly (e.g., wired) combined with the other element, wirelessly combined with the other element, or combined with the other element via a third element.

[0353] As used in connection with various embodiments of the present disclosure, the term "module" may include a unit implemented in hardware, software, or firmware, and may be used interchangeably with other terms (e.g., "logic," "logic block," "portion," or "circuit"). A module may be a single integrated component adapted to perform one or more functions or a minimum unit or portion of the single integrated component. For example, depending on the embodiment, a module may be implemented in the form of an application specific integrated circuit (ASIC).

[0354] The various embodiments described herein may be implemented as software (e.g., program 140) including one or more instructions stored in a storage medium (e.g., internal memory 136 or external memory 138) that can be read by a machine (e.g., electronic device 101). For example, under the control of a processor, a processor (e.g., processor 120) of the machine (e.g., electronic device 101) may call at least one of the one or more instructions stored in the storage medium and execute the at least one instruction with or without the use of one or more other components. This enables the machine to operate to perform at least one function according to the at least one instruction called. The one or more instructions may include code generated by a compiler or code that can be run by an interpreter. A machine-readable storage medium may be provided in the form of a non-transitory storage medium. Among them, the term "non-transitory" only means that the storage medium is a tangible device and does not include a signal (e.g., an electromagnetic wave), but the term does not distinguish between data being semi-permanently stored in a storage medium and data being temporarily stored in a storage medium.

[0355] According to an embodiment, the method according to various embodiments of the present disclosure may be included and provided in a computer program product. The computer program product may be traded between a seller and a buyer as a product. The computer program product may be released in the form of a machine-readable storage medium (e.g., a compact disk read-only memory (CD-ROM)), or may be downloaded via an application store (e.g., Play Store TM ) The computer program product may be published (e.g., downloaded or uploaded) online, or the computer program product may be distributed (e.g., downloaded or uploaded) directly between two user devices (e.g., smart phones). If published online, at least part of the computer program product may be temporarily generated, or at least part of the computer program product may be at least temporarily stored in a machine-readable storage medium (such as a memory of a manufacturer's server, an application store's server, or a forwarding server).

[0356] According to various embodiments, each of the above-mentioned components (e.g., a module or a program) may include a single entity or multiple entities, and some of the multiple entities may be separately arranged in different components. According to various embodiments, one or more of the above-mentioned components may be omitted, or one or more other components may be added. Alternatively or additionally, multiple components (e.g., a module or a program) may be integrated into a single component. In this case, according to various embodiments, the integrated component may still perform the one or more functions of each of the multiple components in the same or similar manner as a corresponding one of the multiple components performing one or more functions before integration. According to various embodiments, the operations performed by a module, a program or another component may be performed sequentially, in parallel, repeatedly or in a heuristic manner, or one or more of the operations may be run or omitted in a different order, or one or more other operations may be added.

Claims

1. A camera module (400), comprising: Camera housing (410); A lens assembly (420) comprising a lens, at least a portion of the lens assembly (420) being disposed in the camera housing (410); a first carrier (440), the lens assembly (420) being coupled to the first carrier (440), the first carrier (440) being movable relative to the camera housing (410) in the direction of the optical axis of the lens; a second carrier (450) on which the first carrier (440) is coupled, the second carrier (450) being movable relative to the camera housing (410) in one or more directions perpendicular to the optical axis, wherein the first carrier (440) is connected to the second carrier (450) so as to be movable in the direction of the optical axis; a first piezoelectric motor (510) connected to the first carrier (440) and the second carrier (450) and configured to provide a first driving force for moving the first carrier (440) in the direction of the optical axis; and a second piezoelectric motor (530) connected to the camera housing (410) and the second carrier (450) and configured to provide a second driving force for moving the second carrier (450) in the one or more directions perpendicular to the optical axis, In which, when the second piezoelectric motor (530) is arranged in the camera housing (410), when at least a portion of the second piezoelectric motor (530) moves in a direction perpendicular to the optical axis, the second piezoelectric motor (530) transmits a second driving force to the second carrier (450).

2. The camera module (400) according to claim 1, wherein: The first piezoelectric motor includes an elastic body, a first piezoelectric element attached to an upper surface of the elastic body, a first rod attached to a lower surface of the elastic body, and a first connecting member connected to the first rod, and wherein the elastic body and the first piezoelectric element form a vibrator, the vibrator being configured to perform bending vibration in the direction of the optical axis based on a voltage applied to the first piezoelectric element, and wherein the second carrier (450) includes a motor support component on which the first piezoelectric motor is mounted, Wherein, a part of the elastic body is combined with the motor support component, The first connection member is coupled to the first carrier (440) to move together with the first carrier (440).

3. The camera module (400) according to claim 2, wherein: a node position is defined on the vibrator, the vibration displacement in the bending vibration is substantially zero at the node position, wherein the node position overlaps with the vibrator, and The elastic body includes a protrusion formed at a position corresponding to the node position of the vibrator, and the elastic body is configured to be bonded to a second carrier (450) in a partial area overlapping the node position based on the direction of the upper surface.

4. The camera module (400) according to any one of claims 2 or 3, wherein: The elastic body includes a base portion and an extension portion, wherein the first piezoelectric element and the first rod are coupled to the base portion, and the extension portion is configured to extend from opposite ends of the base portion configured to face away from each other in a longitudinal direction of the base portion, and The extension portion is formed to be thicker than the base portion and is configured to expand a vibration displacement of the vibrator in the bending vibration.

5. The camera module (400) according to any one of claims 2 to 4, wherein: The first connecting member comprises: The first main part; a plurality of first pressing portions provided on one side of the first body portion and connected to the first rod; and a first fixing portion disposed on an opposite side of the first body portion and fixed to the first carrier (440), and wherein the plurality of first pressing portions have elasticity and apply a preload to the first rod, and wherein the plurality of first pressing portions include a first portion and a second portion separated from the first portion, and Wherein the first portion and the second portion apply the preload to the first rod in opposite directions.

6. The camera module (400) according to any one of claims 1 to 5, further comprising: a first guide member, arranged on a base of the camera housing (410) so as to be movable in a direction of a first shift axis perpendicular to the optical axis, wherein the second carrier (450) is arranged on the first guide member so as to be movable in the direction of a second displacement axis perpendicular to the optical axis and the first displacement axis, and wherein the base comprises a first guide groove configured to extend in the direction of the first displacement axis, wherein the first guide member includes a second guide groove configured to extend in the direction of the first displacement axis and overlap with the first guide groove in the direction of the optical axis, and The first guide ball is accommodated in the space between the first guide groove and the second guide groove.

7. The camera module (400) according to claim 6, wherein: The first guide member includes a third guide groove formed on a surface configured to face the second carrier (450), the third guide groove being configured to extend in the direction of the second shift axis, wherein the second carrier (450) comprises a fourth guide groove, the fourth guide groove being configured to extend in the direction of the second displacement axis and overlap with the third guide groove in the direction of the optical axis, and The second guide ball is accommodated in the space between the third guide groove and the fourth guide groove.

8. The camera module (400) according to any one of claims 6 or 7, further comprising: a second guide member, arranged on the second carrier (450) so as to be movable in the direction of the first displacement axis, The second carrier (450) is aligned with the first guide member and the second guide member in the direction of the optical axis.

9. The camera module (400) according to claim 8, wherein: The second carrier (450) includes a fifth guide groove formed on a surface configured to face the second guide member, the fifth guide groove being configured to extend in the direction of the first shift axis, wherein the second guide member includes a sixth guide groove configured to extend in the direction of the first shift axis and overlap with the fifth guide groove in the direction of the optical axis, and The third guide ball is accommodated in the space between the fourth guide groove and the sixth guide groove.

10. The camera module (400) according to claim 8, wherein: The second piezoelectric motor comprises a first sub-piezoelectric motor and a second sub-piezoelectric motor, wherein the first sub-piezoelectric motor is configured to move the second carrier (450) in the direction of the first displacement axis, and the second sub-piezoelectric motor is configured to move the second carrier (450) in the direction of the second displacement axis. wherein the first sub-piezoelectric motor is connected to the first guide member, and The second sub-piezoelectric motor is connected to the second guide member.

11. The camera module (400) according to any one of claims 8 to 10, wherein: The second carrier (450) and the first guide member are connected so that the movement of the second carrier (450) relative to the first guide member in the direction of the first displacement axis is restricted, but the second carrier (450) can move in the direction of the second displacement axis, and The second carrier (450) and the second guide member are connected so that the movement of the second carrier (450) relative to the second guide member in the direction of the second displacement axis is restricted, but the second carrier (450) can move in the direction of the first displacement axis.

12. The camera module (400) according to claim 10 or 11, wherein: The first sub-piezoelectric motor applies a driving force to the first guide member in the direction of the first displacement axis, and / or wherein the second sub-piezoelectric motor applies a driving force to the second guide member in the direction of the second displacement axis, and wherein the second carrier (450) moves together with the first guide member in the direction of the first shift axis, and the second guide member is separated from the movement of the second carrier (450) and the first guide member, and / or wherein the second carrier (450) moves together with the second guide member in the direction of the second shift axis, and the first guide member is separated from the movement of the second carrier (450) and the second guide member.

13. The camera module (400) according to any one of claims 10 to 12, wherein: The second piezoelectric motor is mounted on the base of the camera housing (410), wherein the first sub-piezoelectric motor is arranged adjacent to an edge of the edge of the base parallel to the first displacement axis, and The second sub-piezoelectric motor is arranged to be adjacent to an edge of the edge of the base which is parallel to the second displacement axis.

14. The camera module (400) according to any one of claims 10 to 13, further comprising: a first elastic member arranged so that opposite ends are fixed to the base of the camera housing (410) and a central portion contacts the second guide member, The first elastic member applies a preload to the second guide member, the second carrier (450) and the first guide member in a direction toward the base.

15. The camera module (400) according to any one of claims 1 to 14, further comprising: a second elastic member, coupled to the first carrier (440), wherein the supporting part of the second carrier (450) is disposed between the opposite end portions of the second elastic member and the side surface of the first carrier (440); and The second elastic member applies a preload to the supporting component in a direction toward the first carrier (440).

Images