Camera module including piezoelectric actuator

Abstract

A camera module may include a piezoelectric actuator configured to move a lens or image sensor in a direction substantially orthogonal to an optical axis. The piezoelectric actuator may include: a vibrator configured to generate vibration; a moving body configured to move in a direction substantially orthogonal to the optical axis; and a contact configured to press an elastically deformable region of the moving body and transmit vibrations generated from the vibrator to the elastically deformable region.

Description

Technical Field

[0001] This disclosure generally relates to a camera module, for example, a camera module including a piezoelectric actuator. This disclosure also relates to an electronic device including a camera module. Background Technology

[0002] Technology is being developed to achieve image stabilization by taking into account the subtle vibrations that occur when capturing images or videos. For example, a shake-free image can be obtained by detecting the user's hand tremors and moving the lens or image sensor accordingly.

[0003] The above description is information that the inventors obtained or had at the time of conceiving this disclosure, and is not necessarily technology that was known prior to the filing of this application. Summary of the Invention

[0004] Technical solution

[0005] According to one aspect of this disclosure, a camera module is provided. The camera module includes: a lens having an optical axis (OA); an image sensor configured to receive light passing through the lens; and a first piezoelectric actuator configured to move the lens or the image sensor in a direction substantially orthogonal to the OA, wherein the first piezoelectric actuator includes: a first vibrator configured to generate vibration; a second vibrator configured to generate vibration; a first movable body including a first elastically deformable region and a second elastically deformable region; a first contact configured to press the first elastically deformable region and configured to transmit vibration generated from the first vibrator to the first elastically deformable region; and a second contact configured to press the second elastically deformable region and configured to transmit vibration generated from the second vibrator to the second elastically deformable region. Attached Figure Description

[0006] The above and other aspects, features and advantages of certain embodiments of the present disclosure will become more apparent from the following description taken in conjunction with the accompanying drawings, wherein:

[0007] Figure 1 This is a block diagram illustrating an electronic device in a network environment according to an embodiment of the present disclosure;

[0008] Figure 2 This is a block diagram illustrating a camera module according to an embodiment of the present disclosure;

[0009] Figure 3 This is a perspective view of an electronic device according to an embodiment of the present disclosure in one direction;

[0010] Figure 4 This is a perspective view of an electronic device according to an embodiment of the present disclosure in another direction;

[0011] Figure 5 This is a perspective view of a camera module according to an embodiment of the present disclosure;

[0012] Figure 6 This is an exploded perspective view of a camera module according to an embodiment of the present disclosure;

[0013] Figure 7 It is according to the embodiments of this disclosure along Figure 5 A cross-sectional view of the camera module taken from line 7-7;

[0014] Figure 8 This is a perspective view of an image sensor and a first piezoelectric actuator according to an embodiment of the present disclosure;

[0015] Figure 9 This is a perspective view of a first piezoelectric actuator according to an embodiment of the present disclosure;

[0016] Figure 10 This is a side view of a first piezoelectric actuator according to an embodiment of the present disclosure;

[0017] Figure 11 This is a plan view of the sensor arrangement structure of a camera module according to an embodiment of the present disclosure;

[0018] Figure 12 This is a diagram illustrating the displacement of an image sensor according to an embodiment of the present disclosure in a first direction substantially orthogonal to the optical axis;

[0019] Figure 13 This illustrates the application of an embodiment of the present disclosure to... Figure 12 A graph of the voltage drive waveform of the first piezoelectric actuator;

[0020] Figure 14 This illustrates the application of an embodiment of the present disclosure to... Figure 12 A graph of the voltage drive waveform of the first piezoelectric actuator;

[0021] Figure 15 This is a diagram illustrating an image sensor shifted in a direction opposite to the first direction according to an embodiment of the present disclosure;

[0022] Figure 16 This illustrates the application of an embodiment of the present disclosure to... Figure 15 A graph of the voltage drive waveform of the first piezoelectric actuator;

[0023] Figure 17 This is a diagram illustrating the displacement of an image sensor according to an embodiment of the present disclosure in a second direction substantially orthogonal to the optical axis and the first direction;

[0024] Figure 18 This illustrates the application of an embodiment of the present disclosure to... Figure 17 A graph of the voltage drive waveform of the first piezoelectric actuator;

[0025] Figure 19 This illustrates the application of an embodiment of the present disclosure to... Figure 17 A graph of the voltage drive waveform of the first piezoelectric actuator;

[0026] Figure 20 This is a diagram illustrating an image sensor shifted in a direction opposite to the second direction according to an embodiment of the present disclosure;

[0027] Figure 21 This illustrates the application of an embodiment of the present disclosure to... Figure 20 A graph of the voltage drive waveform of the first piezoelectric actuator;

[0028] Figure 22 This is a diagram illustrating an image sensor rolling relative to an optical axis in a first rotational direction according to an embodiment of the present disclosure;

[0029] Figure 23 This illustrates the application of an embodiment of the present disclosure to... Figure 22 A graph of the voltage drive waveform of the first piezoelectric actuator;

[0030] Figure 24 This illustrates the application of an embodiment of the present disclosure to... Figure 22 A graph of the voltage drive waveform of the first piezoelectric actuator;

[0031] Figure 25 This is a diagram illustrating an image sensor according to an embodiment of the present disclosure rolling relative to the optical axis in a second rotational direction opposite to the first rotational direction;

[0032] Figure 26 This illustrates the application of an embodiment of the present disclosure to... Figure 25 A graph of the voltage drive waveform of the first piezoelectric actuator;

[0033] Figure 27 This illustrates the application of an embodiment of the present disclosure to... Figure 25 A graph of the voltage drive waveform of the first piezoelectric actuator;

[0034] Figure 28 This is a perspective view of an image sensor and a second piezoelectric actuator according to embodiments of the present disclosure;

[0035] Figure 29 This is an exploded perspective view of an image sensor and a second piezoelectric actuator according to embodiments of the present disclosure;

[0036] Figure 30 According to embodiments of this disclosure Figure 28A plan view of the fifth resonator;

[0037] Figure 31 It is according to the embodiments of this disclosure along Figure 30 A cross-sectional view of the second piezoelectric actuator taken from line 31-31;

[0038] Figure 32 This illustrates the application of an embodiment of the present disclosure to... Figure 28 The voltage drive waveform curve of the second piezoelectric actuator;

[0039] Figure 33 This illustrates the application of an embodiment of the present disclosure to... Figure 28 The voltage drive waveform curve of the second piezoelectric actuator;

[0040] Figure 34 This illustrates the application of an embodiment of the present disclosure to... Figure 28 The voltage drive waveform curve of the second piezoelectric actuator;

[0041] Figure 35 This illustrates the application of an embodiment of the present disclosure to... Figure 28 The voltage drive waveform curve of the second piezoelectric actuator;

[0042] Figure 36 This is a perspective view of a camera module according to an embodiment of the present disclosure;

[0043] Figure 37 This is an exploded perspective view of a camera module according to an embodiment of the present disclosure;

[0044] Figure 38 It is according to the embodiments of this disclosure along Figure 36 A cross-sectional view of the camera module taken from line 38-38;

[0045] Figure 39 This is a perspective view of a camera module according to an embodiment of the present disclosure;

[0046] Figure 40 This is an exploded perspective view of a camera module according to an embodiment of the present disclosure; and

[0047] Figure 41 This is an exploded perspective view showing the sensor arrangement structure of a camera module according to an embodiment of the present disclosure. Detailed Implementation

[0048] Figure 1 This is a block diagram illustrating an electronic device in a network environment according to an embodiment of the present disclosure.

[0049] refer to Figure 1In network environment 100, electronic device 101 can communicate with external electronic device 102 via a first network 198 (e.g., a short-range wireless communication network), or with at least one of external electronic device 104 or server 108 via a second network 199 (e.g., a long-range wireless communication network). According to embodiments of this disclosure, electronic device 101 can communicate with external electronic device 104 via server 108. According to embodiments of this disclosure, electronic device 101 may include a processor 120, memory 130, input module 150, sound output module 155, display module 160, audio module 170, sensor module 176, interface 177, connection terminal 178, haptic module 179, camera module 180, power management module 188, battery 189, communication module 190, user identification module (SIM) 196, or antenna module 197. In some embodiments of this disclosure, at least one component (e.g., connection terminal 178) may be omitted from electronic device 101, or one or more other components may be added to electronic device 101. In some embodiments of this disclosure, some components (e.g., sensor module 176, camera module 180, or antenna module 197) may be implemented as a single component (e.g., display module 160).

[0050] Processor 120 can execute, for example, software (e.g., program 140) to control at least one other component (e.g., hardware or software component) of electronic device 101 coupled to processor 120, and can perform various data processing or calculations. According to embodiments of this disclosure, as at least part of data processing or calculation, processor 120 can store commands or data received from another component (e.g., sensor module 176 or communication module 190) in volatile memory 132, process the commands or data stored in volatile memory 132, and store the resulting data in non-volatile memory 134. According to embodiments of this disclosure, processor 120 may include a main processor 121 (e.g., a central processing unit (CPU) or application processor (AP)) or an auxiliary processor 123 (e.g., a graphics processing unit (GPU), neural processing unit (NPU), image signal processor (ISP), sensor central processor, or communication processor (CP)), the auxiliary processor 123 operating independently of or in conjunction with the main processor 121. For example, when 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 perform a specific function. The auxiliary processor 123 may be implemented separately from the main processor 121, or may be implemented as part of the main processor 121.

[0051] When the main processor 121 is inactive (e.g., in sleep) state, the auxiliary processor 123 may control at least some of the functions or states associated with at least one component of the electronic device 101 (other than the main processor 121) (e.g., display module 160, sensor module 176, or communication module 190), or when the main processor 121 is active (e.g., running an application), the auxiliary processor 123 may work with the main processor 121 to control at least some of the functions or states associated with at least one component of the electronic device 101 (e.g., display module 160, sensor module 176, or communication module 190). According to embodiments of this disclosure, the auxiliary processor 123 (e.g., ISP or CP) may be implemented as part of another component (e.g., camera module 180 or communication module 190) functionally associated with the auxiliary processor 123. According to embodiments of this disclosure, the auxiliary processor 123 (e.g., neural processing unit) may include hardware architectures specified for processing artificial intelligence models. Artificial intelligence models can be generated through machine learning. This learning can be performed, for example, by an electronic device 101 performing artificial intelligence or via a separate server (e.g., server 108). The learning algorithm can include, but is not limited to, supervised learning, unsupervised learning, semi-supervised learning, or reinforcement learning. The artificial intelligence model can include multiple layers of artificial neural networks. The artificial neural network can 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 of these, but is not limited thereto. Additionally or alternatively, the artificial intelligence model can include software structures in addition to hardware structures.

[0052] Memory 130 may store various data used by at least one component of electronic device 101 (e.g., processor 120 or sensor module 176). The various data may include, for example, software (e.g., program 140) and input or output data for commands associated therewith. Memory 130 may include volatile memory 132 or non-volatile memory 134.

[0053] Program 140 may be stored as software in memory 130 and may include, for example, an operating system (OS) 142, middleware 144, or application 146.

[0054] Input module 150 can receive commands or data from outside electronic device 101 (e.g., a user) to be used by another component of electronic device 101 (e.g., processor 120). Input module 150 may include, for example, a microphone, mouse, keyboard, keys (e.g., buttons), or digital pen (e.g., stylus).

[0055] The audio output module 155 can output audio signals to the outside of the electronic device 101. The audio 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. According to embodiments of this disclosure, the receiver can be implemented separately from the speaker or as part of the speaker.

[0056] Display module 160 can visually provide information to the outside of electronic device 101 (e.g., to a user). Display module 160 may include, for example, a display, a holographic device, or a projector, and control circuitry for controlling a respective one of the display, holographic device, and projector. According to embodiments of this disclosure, display module 160 may include a touch sensor adapted to detect touch or a pressure sensor adapted to measure the intensity of the force caused by touch.

[0057] The audio module 170 can convert sound into electrical signals and vice versa. According to embodiments of this disclosure, the audio module 170 can obtain sound via the input module 150, or output sound via the sound output module 155 or an external electronic device (e.g., external electronic device 102) (e.g., a speaker or headphones) that is directly or wirelessly connected to the electronic device 101.

[0058] Sensor module 176 can detect the operating state of electronic device 101 (e.g., power or temperature) or the environmental state outside electronic device 101 (e.g., user state), and then generate an electrical signal or data value corresponding to the detected state. According to embodiments of this disclosure, sensor module 176 may include, for example, a gesture sensor, a gyroscope sensor, an atmospheric pressure sensor, a magnetic sensor, an accelerometer, a grip sensor, a proximity sensor, a color sensor, an infrared (IR) sensor, a biometric sensor, a temperature sensor, a humidity sensor, or an illuminance sensor.

[0059] Interface 177 may support one or more specific protocols used to enable electronic device 101 to connect directly (e.g., wired) or wirelessly to external electronic device (e.g., external electronic device 102). According to embodiments of this disclosure, interface 177 may include, for example, a High Definition Multimedia Interface (HDMI), a Universal Serial Bus (USB) interface, a Secure Digital Card (SD) interface, or an audio interface.

[0060] Connection end 178 may include a connector, wherein electronic device 101 may be physically connected to an external electronic device (e.g., external electronic device 102) via the connector. According to embodiments of this disclosure, 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).

[0061] The haptic module 179 can convert electrical signals into mechanical stimulation (e.g., vibration or movement) or electrical stimulation that can be recognized by a user through his touch or kinesthesia. According to embodiments of this disclosure, the haptic module 179 may include, for example, a motor, a piezoelectric element, or an electrical stimulator.

[0062] Camera module 180 can capture still or moving images. According to embodiments of this disclosure, camera module 180 may include one or more lenses, an image sensor, an ISP, or a flash.

[0063] The power management module 188 manages the power supply to the electronic device 101. According to embodiments of this disclosure, the power management module 188 may be implemented as at least a part of, for example, a power management integrated circuit (PMIC).

[0064] Battery 189 can power at least one component of electronic device 101. According to embodiments of this disclosure, battery 189 may include, for example, a non-rechargeable primary battery, a rechargeable rechargeable battery, or a fuel cell.

[0065] Communication module 190 can support the establishment of a direct (e.g., wired) or wireless communication channel between electronic device 101 and external electronic devices (e.g., external electronic device 102, external electronic device 104, or server 108), and perform communication via the established communication channel. Communication module 190 may include one or more CPs that can operate independently of processor 120 (e.g., AP) and support direct (e.g., wired) or wireless communication. According to embodiments of this disclosure, communication module 190 may include wireless communication module 192 (e.g., cellular communication module, short-range wireless communication module, or Global Navigation Satellite System (GNSS) communication module) or wired communication module 194 (e.g., local area network (LAN) communication module or power line communication (PLC) module). One of these communication modules may communicate with an external electronic device 104 via a first network 198 (e.g., a short-range communication network such as Bluetooth™, Wi-Fi Direct, or Infrared Data Association (IrDA)) or a second network 199 (e.g., a long-range communication network such as a traditional cellular network, a fifth-generation (5G) network, a next-generation communication network, the Internet, or a computer network (e.g., a LAN or a wide area network (WAN))). These various types of communication modules may be implemented as a single component (e.g., a single chip) or as multiple components separate from each other (e.g., multiple chips). The wireless communication module 192 may use user information (e.g., an International Mobile Subscriber Identity (IMSI)) stored in the SIM 196 to identify and authenticate the electronic device 101 in the communication network (such as the first network 198 or the second network 199).

[0066] Wireless communication module 192 can support 5G networks and next-generation communication technologies, such as New Radio (NR) access technologies, beyond fourth-generation (4G) networks. NR access technologies can support enhanced mobile broadband (eMBB), massive machine-type communication (mMTC), or ultra-reliable and low-latency communication (URLLC). Wireless communication module 192 can support high-frequency bands (e.g., millimeter-wave bands) to achieve, for example, high data transmission rates. Wireless communication module 192 can support various technologies used to ensure performance in high-frequency bands, such as beamforming, massive MIMO, full-dimensional MIMO (FD-MIMO), array antennas, analog beamforming, or massive antennas. Wireless communication module 192 can support various requirements specified in electronic device 101, external electronic device (e.g., external electronic device 104), or network system (e.g., second network 199). According to embodiments of this disclosure, the wireless communication module 192 may support peak data rates (e.g., 20 Gbps or higher) for implementing eMBB, loss coverage (e.g., 164 dB or lower) for implementing mMTC, or user plane (U plane) latency (e.g., 0.5 ms or less for each of the downlink (DL) and uplink (UL), or 1 ms or less round trip) for implementing URLLC.

[0067] Antenna module 197 can transmit or receive signals or power to or from the outside of electronic device 101 (e.g., external electronic device). According to embodiments of this disclosure, antenna module 197 may include an antenna comprising a radiating element comprising conductive material or conductive patterns formed in or on a substrate (e.g., a printed circuit board (PCB)). According to embodiments of this disclosure, antenna module 197 may include multiple 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 a first network 198 or a second network 199) can be selected, for example, by communication module 190 from the multiple antennas. Signals or power can then be transmitted or received between communication module 190 and external electronic device via the selected at least one antenna. According to embodiments of this disclosure, another component besides the radiating element (e.g., a radio frequency integrated circuit (RFIC)) may be additionally incorporated into antenna module 197.

[0068] According to various embodiments of the present disclosure, antenna module 197 can form a millimeter-wave antenna module. According to one embodiment of the present disclosure, the millimeter-wave antenna module may include: a PCB; an RFIC disposed on or adjacent to a first surface (e.g., bottom surface) of the PCB and capable of supporting a specified high-frequency band (e.g., millimeter-wave band); and a plurality of antennas (e.g., array antennas) disposed on or adjacent to a second surface (e.g., top or side surface) of the PCB and capable of transmitting or receiving signals in the specified high-frequency band.

[0069] At least some of the aforementioned components may be coupled to each other and transmit signals (e.g., commands or data) between them via a peripheral communication scheme (e.g., bus, general purpose input and output (GPIO), serial peripheral interface (SPI), or mobile industrial processor interface (MIPI)).

[0070] According to embodiments of this disclosure, commands or data can be sent or received between electronic device 101 and external electronic device 104 via server 108 connected to a second network 199. Each of the external electronic devices 102 or 104 can be a device of the same or different type as electronic device 101. According to embodiments of this disclosure, all or some operations to be performed at electronic device 101 can be performed at one or more of the external electronic devices 102 or 104 or server 108. For example, if electronic device 101 is required to automatically or in response to a request from a user or another device to perform a function or service, instead of performing the function or service, or in addition to performing the function or service, electronic device 101 may also request one or more external electronic devices to perform at least a portion of the function or service. Upon receiving the request, one or more external electronic devices may perform at least a portion of the requested function or service, or perform additional functions or services related to the request, and transmit the result of the performance to electronic device 101. Electronic device 101 may provide the result, with or without further processing, as at least part of a response to the request. For this purpose, cloud computing, distributed computing, mobile edge computing (MEC), or client-server computing technologies may be used, for example. Electronic device 101 can use, for example, distributed computing or mobile edge computing to provide ultra-low latency services. In another embodiment of this disclosure, external electronic device 104 may include Internet of Things (IoT) devices. Server 108 may be an intelligent server using machine learning and / or neural networks. According to embodiments of this disclosure, external electronic device 104 or server 108 may be included in a second network 199. Electronic device 101 can be applied to intelligent services (e.g., smart homes, smart cities, smart cars, or healthcare) based on 5G communication technology or IoT-related technologies.

[0071] The electronic device according to various embodiments can be one of a variety of types of electronic devices. Electronic devices may include, for example, portable communication devices (e.g., smartphones), computer equipment, portable multimedia devices, portable medical devices, cameras, wearable devices, or home appliances. According to embodiments of this disclosure, the electronic device is not limited to those described above.

[0072] It should be understood that the various embodiments of this disclosure and the terminology used therein are not intended to limit the technical features set forth herein to particular embodiments, but rather to include various changes, equivalents, or substitutions for the respective embodiments. Regarding the description of the drawings, similar reference numerals may be used to refer to similar or related elements. It should be understood that, unless the relevant context clearly indicates otherwise, the singular form of the noun corresponding to an item may include one or more things. As used herein, each of 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 in the corresponding phrase. As used herein, terms such as “first” and “second” or “first” and “second” may be used simply to distinguish the respective component from another component and do not limit the components in other respects (e.g., importance or order). It will be understood that, whether the terms “operably” or “communically” are used or not, if an element (e.g., a first element) is referred to as “combined with another element (e.g., a second element),” “combined to another element (e.g., a second element),” “connected to another element (e.g., a second element),” or “connected to another element (e.g., a second element)”, it means that an element can be directly (e.g., wiredly) connected to another element, wirelessly connected to another element, or connected to another element via a third element.

[0073] As used in conjunction with various embodiments of this disclosure, the term "module" may include a unit implemented in hardware, software, or firmware, and may be used interchangeably with other terms such as "logic," "logic block," "part," or "circuit." A module may be a single integrated component adapted to perform one or more functions, or its smallest unit or part. For example, according to embodiments of this disclosure, a module may be implemented in the form of an application-specific integrated circuit (ASIC).

[0074] The various embodiments set forth herein can be implemented as software (e.g., program 140) including one or more instructions readable by a machine (e.g., electronic device 101) stored in a storage medium (e.g., internal memory 136 or external memory 138). For example, under the control of a processor, a processor (e.g., processor 120) of the machine (e.g., electronic device 101) can invoke and execute at least one instruction of one or more instructions stored in the storage medium, with or without the use of one or more other components. This allows the machine to operate to perform at least one function according to the invoked at least one instruction. The one or more instructions may include code generated by a compiler or code executable by an interpreter. The machine-readable storage medium may be provided in the form of a non-transitory storage medium. The term "non-transitory" means only that the storage medium is a tangible device and does not include signals (e.g., electromagnetic waves), but this term does not distinguish between cases where data is stored semi-permanently in the storage medium and cases where data is temporarily stored in the storage medium.

[0075] According to embodiments of this disclosure, methods according to various embodiments of this disclosure can be included and provided in a computer program product. The computer program product can be traded as a product between a seller and a buyer. The computer program product can be distributed in the form of a machine-readable storage medium (e.g., an optical disc read-only memory (CD-ROM)) or via an app store (e.g., the Play Store). TM The computer program product may be distributed online (e.g., downloaded or uploaded) or directly between two user devices (e.g., smartphones). If distributed online, at least a portion of the computer program product may be temporarily generated or at least temporarily stored in a machine-readable storage medium, such as the memory of a manufacturer's server, an app store's server, or a relay server.

[0076] According to various embodiments of this disclosure, each of the above-described components (e.g., a module or program) may include a single entity or multiple entities, and some of the multiple entities may be separately disposed in different components. According to various embodiments of this disclosure, one or more of the above-described components may be omitted, or one or more other components may be added. Alternatively or additionally, multiple components (e.g., modules or programs) may be integrated into a single component. In this case, according to various embodiments of this disclosure, the integrated component may still perform one or more functions of each of the multiple components in the same or similar manner as the corresponding components in the multiple components performed before integration. According to various embodiments of this disclosure, operations performed by a module, program, or other component may be performed sequentially, in parallel, repeatedly, or heuristically, or may be performed in a different order or one or more operations may be omitted, or one or more other operations may be added.

[0077] Figure 2 This is a block diagram illustrating a camera module according to an embodiment of the present disclosure.

[0078] refer to 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 ISP 260. The lens assembly 210 may collect light emitted from an object that is a target for capturing its image. The lens assembly 210 may include one or more lenses. According to embodiments of this disclosure, the camera module 180 may include multiple lens assemblies 210. In this case, the camera module 180 may be configured as, for example, a dual-camera, a 360-degree camera, or a spherical camera. A portion of the multiple lens assemblies 210 may have the same lens characteristics (e.g., angle of view, focal length, autofocus, f-number, or optical zoom), or at least one of the multiple lens assemblies 210 may have one or more lens characteristics different from the lens characteristics of the other lens assemblies. The lens assembly 210 may include, for example, a wide-angle lens or a telephoto lens.

[0079] Flash lamp 220 can emit light to enhance light emitted or reflected from an object. According to embodiments of this disclosure, flash lamp 220 may include one or more light-emitting diodes (LEDs), such as red-green-blue (RGB) LEDs, white LEDs, IR LEDs, or ultraviolet (UV) LEDs, or xenon lamps. Image sensor 230 can obtain an image corresponding to an object by converting light emitted or reflected from an object and transmitted through lens assembly 210 into an electrical signal. According to embodiments of this disclosure, image sensor 230 may include, for example, one image sensor selected from image sensors with different properties (e.g., RGB sensors, black-and-white (BW) sensors, IR sensors, or UV sensors), multiple image sensors having the same properties, or multiple image sensors with different properties. Each image sensor included in image sensor 230 may be implemented using, for example, a charge-coupled device (CCD) sensor or a complementary metal-oxide-semiconductor (CMOS) sensor.

[0080] In response to movement of camera module 180 or electronics 101 including camera module 180, image stabilizer 240 may move at least one lens or image sensor 230 included in lens assembly 210 in a specific direction, or control the operating characteristics of image sensor 230 (e.g., adjust readout timing). This can compensate for at least a portion of the negative impact of movement on the image to be captured. According to embodiments of the present disclosure, image stabilizer 240 may use a gyroscope sensor (not shown) or accelerometer sensor (not shown) disposed inside or outside camera module 180 to detect such movement of camera module 180 or electronics 101. According to embodiments of the present disclosure, image stabilizer 240 may be implemented as, for example, an optical image stabilizer. Memory 250 may at least temporarily store at least a portion of the image acquired by image sensor 230 for subsequent image processing tasks. For example, when acquiring images via shutter-delay or acquiring multiple images at high speed, the acquired original image (e.g., a Bayer pattern image or a high-resolution image) may be stored in memory 250, and a copy image (e.g., a low-resolution image) corresponding to the original image may be previewed via display module 160. Subsequently, when specified conditions are met (e.g., user input or system command), at least a portion of the original image stored in memory 250 can be obtained and processed via, for example, ISP 260. According to embodiments of this disclosure, memory 250 may be configured as at least a portion of memory 130, or as a separate memory operating independently of memory 130.

[0081] The ISP 260 can perform one or more image processing operations on images acquired by the image sensor 230 or stored in the memory 250. These image processing operations may include, for example, depth map generation, 3D modeling, panorama generation, feature point extraction, image compositing, or image compensation (e.g., noise reduction, resolution adjustment, brightness adjustment, blurring, sharpening, or softening). Additionally or alternatively, the ISP 260 can control at least one component included in the camera module 180 (e.g., the image sensor 230) (e.g., controlling exposure time, readout timing, etc.). Images processed by the ISP 260 may be stored again in the memory 250 for further processing, or may be provided to external components of the camera module 180 (e.g., memory 130, display module 160, external electronics 102, external electronics 104, or server 108). According to embodiments of this disclosure, the ISP 260 may be configured as at least a portion of the processor 120, or as a separate processor operating independently of the processor 120. When the ISP 260 is configured as a processor separate from the processor 120, at least one image processed by the ISP 260 can be displayed as is, or displayed via the display module 160 after additional image processing is performed by the processor 120.

[0082] According to embodiments of this disclosure, electronic device 101 may include a plurality of camera modules 180 with different characteristics or functions. In this case, for example, at least one of the plurality of camera modules 180 may be a wide-angle camera, and at least another of the plurality of camera modules 180 may be a telephoto camera. Similarly, at least one of the plurality of camera modules 180 may be a front-facing camera, and at least another of the plurality of camera modules 180 may be a rear-facing camera.

[0083] Figure 3 This is a perspective view of an electronic device according to an embodiment of the present disclosure in one direction. Figure 4 This is a perspective view of an electronic device according to an embodiment of the present disclosure in another direction.

[0084] refer to Figure 3 and Figure 4 Electronic equipment 301 (e.g., Figure 1The electronic device 101 may include a housing 310, which includes a first surface 310A (e.g., a front surface), a second surface 310B (e.g., a rear surface), and a third surface 310C (e.g., a side surface) surrounding the space between the first surface 310A and the second surface 310B. The first surface 310A may be formed of a first plate 311A, at least a portion of which is substantially transparent. For example, the first plate 311A ​​may include a polymer plate or glass plate containing at least one coating. The second surface 310B may be formed of a substantially opaque second plate 311B. For example, the second plate 311B may be formed of coated or colored glass, ceramic, polymer, metal (e.g., aluminum, stainless steel (STS), or magnesium), or combinations thereof. The third surface 310C may be formed of a frame 311C, which is bonded to the first plate 311A ​​and the second plate 311B and includes metal and / or polymer. The second plate 311B and the frame 311C may be integrally formed. The second plate 311B and the frame 311C can be formed from substantially the same material (e.g., aluminum).

[0085] Electronic device 301 may include input module 350 (e.g., Figure 1 Input module 350 may be disposed on third surface 310C. Input module 350 may include at least one key input device. For example, the key input device may include one or more mechanical actuators (e.g., buttons), one or more capacitors and / or one or more inductors.

[0086] Electronic device 301 may include sound output module 355 (e.g., Figure 1 The sound output module 355 may be disposed on the third surface 310C. The sound output module 355 may include one or more holes.

[0087] Electronic device 301 may include display module 361 (e.g., Figure 1The display module 361 may be disposed on the first surface 310A. The display module 361 may be visible through at least a portion of the first plate 311A. The display module 361 may have a shape substantially the same as the outer edge of the first plate 311A. The periphery of the display module 361 may substantially coincide with the outer edge of the first plate 311A. The display module 361 may include touch sensing circuitry, a pressure sensor for measuring the intensity (pressure) of a touch, and / or a digitizer for detecting a magnetic stylus. The display module 361 may include a screen display area 361A, which is visually exposed to display content using pixels. The screen display area 361A may include a sensing area 361A-1. The sensing area 361A-1 may overlap with at least a portion of the screen display area 361A. The sensing area 361A-1 may allow transmission with the sensor module 376 (e.g., Figure 1 The sensor area 361A-1 can display content, similar to a screen display area 361A that does not overlap with the sensor area 361A-1. For example, the sensor area 361A-1 can display content when the sensor module 376 is not in operation. At least a portion of the camera area 361A-2 can overlap with the screen display area 361A. The screen display area 361A may include the camera area 361A-2. The camera area 361A-2 can allow the transmission of input signals related to the first camera module 380A (e.g., ...). Figure 1 Camera module 180 and / or Figure 2 The camera module 380A may display optical signals associated with the camera module 380A. Similar to a screen display area 361A that does not overlap with the camera area 361A-2, at least a portion of the camera area 361A-2 that overlaps with the screen display area 361A may display content. For example, the camera area 361A-2 may display content when the first camera module 380A is not in operation. At least a portion of the camera area 361A-2 may overlap with the screen display area 361A. The screen display area 361A may include the camera area 361A-2. The camera area 361A-2 may allow the transmission of optical signals associated with the first camera module 380A (e.g., the camera module 380A). Figure 1 Camera module 180 and / or Figure 2The camera module 360) is associated with the light signal. The camera area 361A-2 may also be referred to as a "display aperture". The camera area 361A-2 may have a generally circular or elliptical shape. In embodiments not shown, the display module 361 may include at least one or a combination of an audio module 370, a sensor module 376, a first camera module 380A, or a light-emitting element (not shown) on the rear surface (e.g., a surface in the +Z direction) of the screen display area 361A. For example, in the electronic device 301, the camera module (e.g., the first camera module 380A) may be disposed on the rear surface of at least one of a first surface 310A (e.g., a front surface) or a third surface 310C (e.g., a side surface), facing the first surface 310A and / or the third surface 310C. For example, the first camera module 380A may not be visually exposed to the screen display area 361A and may include an under-display camera (UDC), which may also be referred to as an "under-panel camera (UPC)".

[0088] Electronic device 301 may include audio module 370 (e.g., Figure 1 The audio module 370 can be disposed on the third surface 310C. The audio module 370 can obtain sound through at least one hole.

[0089] Electronic device 301 may include sensor module 376. Sensor module 376 may be disposed on first surface 310A. Sensor module 376 may form sensing area 361A-1 in at least a portion of screen display area 361A. Sensor module 376 may receive input signals transmitted through sensing area 361A-1 and generate electrical signals based on the received input signals. For example, the input signal may have a specified physical quantity (e.g., heat, light, temperature, sound, pressure, or ultrasound). The input signal may include signals related to the user's biometric information (e.g., fingerprint).

[0090] Electronic device 301 may include connection terminal 378 (e.g., Figure 1 The connection terminal 378 may be disposed on the third surface 310C. For example, when viewing the electronic device 301 in one direction (e.g., the -X direction), the connection terminal 378 may be substantially located in the center portion of the third surface 310C, and the sound output module 355 may be disposed on one side (e.g., the right side) relative to the connection terminal 378.

[0091] Electronic device 301 may include a first camera module 380A (e.g., Figure 1 Camera module 180 and / or Figure 2The first camera module 380A may be disposed on the first surface 310A. At least a portion of the first camera module 380A may be disposed below the display module 361. The first camera module 380A may receive light signals transmitted through the camera area 361A-2.

[0092] Electronic device 301 may include multiple second camera modules 380B (e.g., Figure 1 Camera module 180 and / or Figure 2 (Camera module 180). Multiple second camera modules 380B can be positioned on the second surface 310B. The multiple second camera modules 380B can be arranged in a first row in one direction (e.g., the Y direction) of the second plate 311B. The multiple second camera modules 380B can have different fields of view. For example, the multiple second camera modules 380B can include an ultra-wide-angle camera, a wide-angle camera, and / or a telephoto camera.

[0093] Electronic device 301 may include optical module 380C (e.g., Figure 2 (Flash 220). The light module 380C may be arranged in a second row on the second surface 310B, substantially parallel to the first row of the plurality of second camera modules 380B. The light module 380C may include one or more light-emitting diodes or xenon lamps. The light module 380C may include a sensor configured to detect external light. For example, the sensor may include a flash sensor.

[0094] Electronic device 301 may include a third camera module 380D. The pixels, magnification, and / or field of view of the third camera module 380D may differ from the pixels, magnification, and / or field of view of at least one second camera module 380B. The third camera module 380D may be arranged in a second row on the second surface 310B that is substantially parallel to the first row of the plurality of second camera modules 380B.

[0095] Electronic device 301 may include a fourth camera module 380E. The fourth camera module 380E (which may also be referred to as a "depth camera" or a "time-of-flight (ToF) camera") may be configured to measure the distance between the fourth camera module 380E and an object. For example, the fourth camera module 380E may be configured to measure the distance using at least one or a combination of ultrasonic waves, infrared light, or laser light. The fourth camera module 380E may be arranged in a second row on the second surface 310B, substantially parallel to the first row of a plurality of second camera modules 380B.

[0096] At the same time, in addition to Figure 3 and Figure 4In addition to the electronic devices shown, the embodiments described herein can also be applied to electronic devices of various shapes / forms (e.g., foldable electronic devices, sliding electronic devices, rollable electronic devices, digital cameras, digital camcorders, tablet PCs, laptops and other electronic devices).

[0097] As used herein, the terms “basically,” “approximately,” “generally,” and “about” with respect to a given parameter, property, or condition can include the degree to which a given parameter, property, or condition is satisfied with small variations, such as within acceptable manufacturing tolerances, as would be understood by one of ordinary skill in the art. For example, a parameter that is substantially satisfied may be satisfied with at least about 90%, at least about 95%, or at least about 99%.

[0098] Figure 5 This is a perspective view of a camera module according to an embodiment of the present disclosure. Figure 6 This is an exploded perspective view of a camera module according to an embodiment of the present disclosure. Figure 7 It is according to the embodiments of this disclosure along Figure 5 The cross-sectional view of the camera module taken from line 7-7.

[0099] refer to Figures 5 to 7 Camera module 400 (e.g., Figure 1 Camera module 180 Figure 2 Camera module 180 and / or Figure 3 and Figure 4 The second camera module 380B and / or the third camera module 380D may include a camera housing 410. The camera housing 410 may accommodate one or more camera-related components. The camera housing 410 may include a base 411 configured to support one or more camera-related components and provide electrical connections to them. For example, the base 411 may include a PCB 413. The camera housing 410 may include a camera cover 412, which may also be referred to as a "shielding cover". The camera cover 412 may cover one or more camera-related components.

[0100] Camera module 400 may include lens assembly 420 (e.g., Figure 2 Lens assembly 420 may include at least one lens 421 having a defined optical axis OA. A portion of the optical axis OA may be defined as a line connecting the center of curvature of a first surface of at least one lens 421 to the center of curvature of an Nth surface (N is a natural number). Lens assembly 420 may include a lens housing 422 configured to receive at least one lens 421. Lens housing 422 may be coupled to camera cover 412.

[0101] Camera module 400 may include image sensor 430 (e.g., Figure 2Image sensor 430 can receive light passing through at least one lens 421.

[0102] Camera module 400 may include a reflector 440. Reflector 440 can reflect light passing through at least one lens 421 toward image sensor 430. Reflector 440 may include: an incident surface 440A through which light is incident; an exit surface 440B through which light exits; a first reflecting surface 440C located between the incident surface 440A and the exit surface 440B, and configured to reflect light incident through the incident surface 440A; and a second reflecting surface 440D opposite to the first reflecting surface 440C, located between the incident surface 440A and the exit surface 440B, and configured to reflect light reflected by the first reflecting surface 440C toward the exit surface 440B. Optical axis OA can be defined as the optical path leading to lens assembly 420, reflector 440, and image sensor 430.

[0103] In an embodiment not shown, reflector 440 may comprise a solid having a generally triangular cross-section having one of a first reflective surface 440C and a second reflective surface 440D. In an embodiment not shown, reflector 440 may comprise a mirror having at least one reflective surface.

[0104] The camera module 400 may include a first piezoelectric actuator 450. The first piezoelectric actuator 450 (also referred to as an "optical image stabilization (OIS) piezoelectric actuator") can piezoelectrically move the image sensor 430 in a direction substantially orthogonal to the optical axis OA (e.g., the XY plane direction) (e.g., performing linear motion and / or rolling motion relative to the optical axis OA).

[0105] The first piezoelectric actuator 450 may include a first resonator 450A and a second resonator 450B. The first resonator 450A (also referred to as the "first OIS resonator") can generate electricity in a first direction (e.g., the X-axis direction) substantially orthogonal to the optical axis OA. The second resonator 450B (also referred to as the "second OIS resonator") can generate electricity in a second direction (e.g., the Y-axis direction) substantially orthogonal to both the optical axis OA and the first direction.

[0106] The first piezoelectric actuator 450 may include multiple pairs of resonators. For example, one pair of resonators may include a first resonator 450A and a second resonator 450B, and another pair of resonators may include a third resonator 450C and a fourth resonator 450D. The third resonator 450C (also referred to as the "third OIS resonator") can generate electricity in a first direction (e.g., the X-axis direction) substantially orthogonal to the optical axis OA. The fourth resonator 450D (also referred to as the "fourth resonator") can generate electricity in a second direction (e.g., the Y-axis direction) substantially orthogonal to both the optical axis OA and the first direction. The first resonator 450A and the second resonator 450B may be respectively disposed at two edges of a first corner of the image sensor 430, and the third resonator 450C and the fourth resonator 450D may be respectively disposed at two edges of a second corner of the image sensor 430, the second corner being opposite to the first corner of the image sensor 430.

[0107] The first piezoelectric actuator 450 may include a first movable body 455. The first movable body 455 may receive power from a first resonator 450A and a third resonator 450C, and move the image sensor 430 in a first direction (e.g., the X-axis direction). The first movable body 455 may receive power from a second resonator 450B and a fourth resonator 450D, and move the image sensor 430 in a second direction (e.g., the Y-axis direction).

[0108] In an embodiment not shown, the first piezoelectric actuator 450 can move the lens assembly 420 and / or the reflector 440 in a direction substantially orthogonal to the optical axis OA.

[0109] The camera module 400 may include a second piezoelectric actuator 460. The second piezoelectric actuator 460 (which may also be referred to as an "autofocus (AF) piezoelectric actuator") can move (e.g., perform linear motion) the image sensor 430 in a piezoelectric manner in a direction along the optical axis OA (e.g., the Z-axis direction).

[0110] The second piezoelectric actuator 460 may include a fifth resonator 461. The fifth resonator 461 (also referred to as the "AF resonator") can generate electricity in the direction along the optical axis OA (e.g., the Z-axis direction).

[0111] The second piezoelectric actuator 460 may include a second movable body 466. The second movable body 466 may receive power from the fifth resonator 461 and move the image sensor 430 in a direction along the optical axis OA (e.g., the Z-axis direction).

[0112] Figure 8 This is a perspective view of an image sensor and a first piezoelectric actuator according to an embodiment of the present disclosure. Figure 9This is a perspective view of a first piezoelectric actuator according to an embodiment of the present disclosure. Figure 10 This is a side view of a first piezoelectric actuator according to an embodiment of the present disclosure.

[0113] refer to Figures 8 to 10 The camera module 400 may include an image sensor 430, a first piezoelectric actuator 450, and a second piezoelectric actuator 460. When viewed along the optical axis (e.g., the Z-axis), the camera module 400 may be stacked in the order of image sensor 430, second piezoelectric actuator 460, and first piezoelectric actuator 450. However, embodiments are not limited to this, and the stacking order may vary depending on the structure of the camera module 400, the size of the first piezoelectric actuator 450, and / or the size of the second piezoelectric actuator 460.

[0114] The first piezoelectric actuator 450 may include a first resonator 450A. The first resonator 450A may include a first vibrator 451A, configured to generate vibration in a first direction substantially orthogonal to the optical axis OA (e.g., the X-axis direction). The first vibrator 451A may operate to extend and contract in a d33 mode or a longitudinal mode, or a d31 mode or a lateral mode. The first vibrator 451A may include a substantially elongated shape (e.g., a cuboid shape). The first vibrator 451A may be disposed in a region adjacent to a first corner between the first edge (e.g., the edge in the +Y direction) and the second edge (e.g., the edge in the -X direction) of the image sensor 430. The first vibrator 451A may point in the first direction substantially orthogonal to the optical axis OA (e.g., the X-axis direction). The first vibrator 451A may include a piezoelectric material.

[0115] The first resonator 450A may include a first tip 452A configured to transmit vibrations generated from the first vibrator 451A to the first movable body 455. The first tip 452A may press against a portion of the first movable body 455 (e.g., a first elastically deformable region 457A). The first tip 452A may contact a portion of the first movable body 455 (e.g., the first elastically deformable region 457A). The first tip 452A may include a metallic material.

[0116] The contact area of ​​the first contact 452A may have a first length (e.g., a dimension in the X-axis direction) substantially parallel to the vibration direction (e.g., a dimension in the X-axis direction) of the first vibrator 451A and a first width (e.g., a dimension in the Y-axis direction) substantially orthogonal to the vibration direction of the first vibrator 451A. The first width may be greater than the first length. For example, the contact area of ​​the first contact 452A may have a substantially rectangular shape. The first width may be substantially greater than or equal to the maximum displacement of the first moving body 455 in the first longitudinal direction (e.g., the X-axis direction).

[0117] The first contact 452A may have a first height (e.g., a dimension in the Z-axis direction) orthogonal to each of the first length and the first width. The first contact 452A may have a shape in which the contact area decreases at least partially along the first height toward the first contact 452A.

[0118] The first contact 452A may be disposed in the image sensor 430 in a region adjacent to a first angle between the first edge (e.g., the edge in the +Y direction) and the second edge (e.g., the edge in the -X direction). The first contact 452A may contact the first vibrator 451A. The first contact 452A may be disposed along a first direction (e.g., the X-axis direction) substantially orthogonal to the optical axis OA. When a vibrational displacement occurs in the first vibrator 451A, the first moving body 455 may move in the first direction (e.g., the X-axis direction) by the frictional force at the contact portion between the first contact 452A and the first moving body 455.

[0119] The first piezoelectric actuator 450 may include a second resonator 450B. The second resonator 450B may include a second vibrator 451B, configured to generate vibration in a second direction (e.g., the Y-axis direction) substantially orthogonal to the optical axis OA and a first direction (e.g., the X-axis direction). The second vibrator 451B can operate to extend and contract in either a d33 mode or a d31 mode. The second vibrator 451B may include a substantially elongated shape (e.g., a cuboid shape). The second vibrator 451B may be disposed in a region adjacent to a first corner between the first edge (e.g., the +Y-axis direction) and the second edge (e.g., the -X-axis direction) of the image sensor 430 at a second edge (e.g., the edge in the -X-axis direction). The second vibrator 451B may point in the second direction substantially orthogonal to the optical axis OA (e.g., the Y-axis direction). The second vibrator 451B may include a piezoelectric material.

[0120] The second resonator 450B may include a second contact 452B configured to transmit vibrations generated from the second vibrator 451B to the first movable body 455. The second contact 452B may press against a portion of the first movable body 455 (e.g., a second elastically deformable region 457B). The second contact 452B may contact a portion of the first movable body 455 (e.g., the second elastically deformable region 457B). The second contact 452B may include a metallic material.

[0121] The contact area of ​​the second contact 452B may have a second length (e.g., a dimension in the Y-axis direction) substantially parallel to the vibration direction (e.g., a dimension in the Y-axis direction) of the second vibrator 451B and a second width (e.g., a dimension in the X-axis direction) substantially orthogonal to the vibration direction of the second vibrator 451B. The second width may be greater than the second length. The second width may be substantially greater than or equal to the maximum displacement of the first moving body 455 in the second longitudinal direction (e.g., the Y-axis direction).

[0122] The second contact 452B may have a second height (e.g., a dimension in the Z-axis direction) orthogonal to each of the second length and the second width. The second contact 452B may have a shape in which the contact area decreases at least partially along the second height toward the second contact 452B.

[0123] The second contact 452B can contact the second vibrator 451B. The second contact 452B can be disposed in the second edge (e.g., the edge in the -X direction) of the image sensor 430 in a region adjacent to a first angle between the first edge (e.g., the edge in the +Y direction) and the second edge (e.g., the edge in the -X direction). The second contact 452B can be disposed along a second direction (e.g., the Y-axis direction) substantially orthogonal to the optical axis OA and the first direction (e.g., the X-axis direction). When vibrational displacement occurs in the second vibrator 451B, the first moving body 455 can move in the second direction (e.g., the Y-axis direction) by the frictional force at the contact portion between the second contact 452B and the first moving body 455.

[0124] The first piezoelectric actuator 450 may include a third resonator 450C. The third resonator 450C may include a third vibrator 451C, configured to generate vibration in a first direction substantially orthogonal to the optical axis OA (e.g., the X-axis direction). The first vibrator 451C may be operable to extend and contract in either a d33 or d31 mode. The third vibrator 451C may include a substantially elongated shape (e.g., a cuboid shape). The third vibrator 451C may be positioned in a region adjacent to a second angle between the third edge (e.g., the edge in the -Y direction) and the fourth edge (e.g., the edge in the +X direction) of the image sensor 430. The third vibrator 451C may point in the first direction substantially orthogonal to the optical axis OA (e.g., the X-axis direction). The third vibrator 451C may include a piezoelectric material.

[0125] The third resonator 450C may include a third contact 452C configured to transmit vibrations generated from the third vibrator 451C to the first movable body 455. The third contact 452C may press against a portion of the first movable body 455 (e.g., a third elastically deformable region 457C). The third contact 452C may contact a portion of the first movable body 455 (e.g., the third elastically deformable region 457C). The third contact 452C may include a metallic material.

[0126] The contact area of ​​the third contact 452C may have a third length (e.g., a dimension in the X-axis direction) substantially parallel to the vibration direction (e.g., a dimension in the X-axis direction) of the third vibrator 451C and a third width (e.g., a dimension in the Y-axis direction) substantially orthogonal to the vibration direction of the third vibrator 451C. The third width may be greater than the third length. The third width may be substantially greater than or equal to the maximum displacement of the first moving body 455 in the third longitudinal direction (e.g., the X-axis direction).

[0127] The third contact 452C may have a third height (e.g., a dimension in the Z-axis direction) orthogonal to each of the third length and the third width. The third contact 452C may have a shape in which the contact area decreases at least partially along the third height toward the third contact 452A.

[0128] The third contact 452C may be disposed in the region adjacent to the second angle between the third edge (e.g., the edge in the -Y direction) and the fourth edge (e.g., the edge in the +X direction) of the image sensor 430. The third contact 452C may contact the third vibrator 451C. The third contact 452C may be disposed along a first direction (e.g., the X-axis direction) substantially orthogonal to the optical axis OA. When vibrational displacement occurs in the third vibrator 451C, the first moving body 455 may move in the first direction (e.g., the X-axis direction) by the frictional force at the contact portion between the third contact 452C and the first moving body 455.

[0129] The first piezoelectric actuator 450 may include a fourth resonator 450D. The fourth resonator 450D may include a fourth vibrator 451D, which is configured to generate vibration in a second direction (e.g., the Y-axis direction) substantially orthogonal to the optical axis OA and a first direction (e.g., the X-axis direction). The fourth vibrator 451D can operate to extend and contract in either a d33 mode or a d31 mode. The fourth vibrator 451D may include a substantially elongated shape (e.g., a cuboid shape). The fourth vibrator 451D may be positioned in a region adjacent to a second angle between the third edge (e.g., the -Y-axis direction) and the fourth edge (e.g., the +X-axis direction) of the image sensor 430 at a fourth edge (e.g., the edge in the +X-axis direction). The fourth vibrator 451D may point in the second direction (e.g., the Y-axis direction) substantially orthogonal to the optical axis OA. The fourth vibrator 451D may include a piezoelectric material.

[0130] The fourth resonator 450D may include a fourth contact 452D, which is configured to transmit vibrations generated from the fourth resonator 451D to the first movable body 455. The fourth contact 452D may press against a portion of the first movable body 455 (e.g., a fourth elastically deformable region 457D). The fourth contact 452D may contact a portion of the first movable body 455 (e.g., the fourth elastically deformable region 457D). The fourth contact 452D may include a metallic material.

[0131] The contact area of ​​the fourth contact 452D may have a fourth length (e.g., a dimension in the Y-axis direction) substantially parallel to the vibration direction (e.g., the Y-axis direction) of the fourth vibrator 451D and a fourth width (e.g., a dimension in the X-axis direction) substantially orthogonal to the vibration direction of the fourth vibrator 451D. The fourth width may be greater than the fourth length. The fourth width may be substantially greater than or equal to the maximum displacement of the first moving body 455 in the fourth longitudinal direction (e.g., the Y-axis direction).

[0132] The fourth contact 452D may have a fourth height (e.g., a dimension in the Z-axis direction) orthogonal to each of the fourth length and the fourth width. The fourth contact 452D may have a shape in which the contact area decreases at least partially along the fourth height toward the fourth contact 452D.

[0133] The fourth contact 452D can contact the fourth vibrator 451D. The fourth contact 452D can be disposed in the region adjacent to the second angle between the third edge (e.g., the edge in the +X direction) and the fourth edge (e.g., the edge in the -Y direction) of the image sensor 430. The fourth contact 452D can be disposed along a second direction (e.g., the Y-axis direction) substantially orthogonal to the optical axis OA and the first direction (e.g., the X-axis direction). When vibrational displacement occurs in the fourth vibrator 451D, the first moving body 455 can move in the second direction (e.g., the Y-axis direction) by the frictional force at the contact portion between the fourth contact 452D and the first moving body 455.

[0134] The first vibrator 451A, the first contact 452A, the second vibrator 451B, the second contact 452B, the third vibrator 451C, the third contact 452C, the fourth vibrator 451D, and the fourth contact 452D can be substantially on the same plane. This prevents the first resonator 450A, the second resonator 450B, the third resonator 450C, and the fourth resonator 450D from interfering with each other's operation, and also allows for a reduction in the size of the first piezoelectric actuator 450.

[0135] The first piezoelectric actuator 450 may include a first movable body 455. The first movable body 455 may include a first movable plate 456. The first movable plate 456 may support a second piezoelectric actuator 460 or an image sensor 430. The first movable plate 456 may have a polygonal shape (e.g., a quadrilateral shape).

[0136] The first movable body 455 may include a first elastically deformable region 457A. The first elastically deformable region 457A can elastically deform relative to the first movable plate 456. The first elastically deformable region 457A may include a first fixed end F1 connected to a portion of a first edge (e.g., an edge in the +Y direction) of the first movable plate 456 and a first elastic arm A1 configured to bend relative to the first fixed end F1. The first elastic arm A1 can be separated from the first edge (e.g., an edge in the +Y direction) of the first movable plate 456. The first elastic arm A1 can be held pressed by a first contact 452A. The first elastic arm A1 can be frictionally coupled to the first contact 452A. The contact pressure between the first contact 452A and the first elastic arm A1 can be established by bending the first elastic arm A1.

[0137] The first movable body 455 may include a second elastically deformable region 457B. The second elastically deformable region 457B can elastically deform relative to the first movable plate 456. The second elastically deformable region 457B may include a second fixed end F2 connected to a portion of a second edge (e.g., the edge in the -X direction) of the first movable plate 456 and a second elastic arm A2 configured to bend relative to the second fixed end F2. The second elastic arm A2 can be separated from the second edge (e.g., the edge in the -X direction) of the first movable plate 456. The second elastic arm A2 can be held pressed by a second contact 452B. The second elastic arm A2 can be frictionally coupled to the second contact 452B. The contact pressure between the second contact 452B and the second elastic arm A2 can be established by bending of the second elastic arm A2.

[0138] The first movable body 455 may include a third elastically deformable region 457C. The third elastically deformable region 457C can elastically deform relative to the first movable plate 456. The third elastically deformable region 457C may be positioned opposite to the first elastically deformable region 457A. The third elastically deformable region 457C may include a third fixed end F3 connected to a portion of a third edge (e.g., an edge in the -Y direction) of the first movable plate 456 and a third elastic arm A3 configured to bend relative to the third fixed end F3. The third elastic arm A3 may be substantially parallel to the first elastic arm A1. The third elastic arm A3 may be separated from the third edge (e.g., an edge in the -Y direction) of the first movable plate 456. The third elastic arm A3 may be held pressed by a third contact 452C. The third elastic arm A3 may be frictionally coupled to the third contact 452C. The contact pressure between the third contact 452C and the third elastic arm A3 may be established by bending of the third elastic arm A3.

[0139] The first movable body 455 may include a fourth elastically deformable region 457D. The fourth elastically deformable region 457D can elastically deform relative to the first movable plate 456. The fourth elastically deformable region 457D may be positioned opposite to a second elastically deformable region 457B. The fourth elastically deformable region 457D may include a fourth fixed end F4 connected to a portion of a fourth edge (e.g., an edge in the +X direction) of the first movable plate 456 and a fourth elastic arm A4 configured to bend relative to the fourth fixed end F4. The fourth elastic arm A4 may be substantially parallel to the second elastic arm A2. The fourth elastic arm A4 may be disengaged from the fourth edge (e.g., an edge in the +X direction) of the first movable plate 456. The fourth elastic arm A4 may be held pressed by a fourth contact 452D. The fourth elastic arm A4 may be frictionally coupled to the fourth contact 452D. The contact pressure between the fourth contact 452D and the fourth elastic arm A4 may be established by bending of the fourth elastic arm A4.

[0140] Figure 11 This is a plan view of the sensor arrangement structure of a camera module according to an embodiment of the present disclosure.

[0141] refer to Figure 11 The camera module 400 may include a plurality of first sensors 473 configured to detect a first moving body 455 moving in a direction substantially orthogonal to the optical axis (e.g., the Z-axis) (e.g., the XY-plane direction) (see [reference]). Figures 8 to 10 The location of the first sensors 473. For example, each of the multiple first sensors 473 may include a Hall sensor. The multiple first sensors 473 may be positioned corresponding to the first sensing magnet 471 in the corner region of the first movable plate 456 disposed on the PCB 413.

[0142] In embodiments of this disclosure, the camera module 400 may include at least three first sensors 473. At least two of the at least three first sensors 473 are capable of detecting movement of a first moving body 455 in a first direction (e.g., the X-axis direction), and the remaining at least one first sensor 473 is capable of detecting movement of the first moving body 455 in a second direction (e.g., the Y-axis direction) substantially orthogonal to the first direction. The processor (e.g., Figure 1 The processor 120 can determine the amount of rotation of the first moving body 455 based on the difference in position of the first moving body 455 detected by each of at least two first sensors 473 that detect movement of the first moving body 455 in a first direction (e.g., the difference in position of the first sensing magnet 471). The at least two first sensors 473 that detect movement of the first moving body 455 in the same direction can be spaced apart from each other. Increasing the spacing between the at least two first sensors 473 can increase the sensitivity of sensing the amount of rotation of the first moving body 455. The at least three first sensors 473 can be non-contact sensors that do not contact the first moving body 455. The processor can detect position based on the difference in physical quantities (e.g., magnetic flux, light intensity, capacitance, inductance, and / or other detectable physical quantities) detected according to the distance between the first sensors 473 and the first moving body 455 (e.g., distance in the XY direction or distance in the Z-axis direction).

[0143] Camera module 400 may include a second sensor 474 configured to detect a second moving body 466 moving in a direction along an optical axis (e.g., the Z-axis) (see [link]). Figures 5 to 7 and Figures 28 to 31 The second sensor 474 may include a Hall sensor. The second sensor 474 may be positioned relative to the carrier 467 (see [reference]) positioned on the PCB 413. Figures 28 to 31 The position corresponding to the second sensing magnet 472 in the ).

[0144] Furthermore, although the embodiments describe the plurality of first sensors 473 and second sensors 474 as sensors for detecting magnetic flux (e.g., Hall sensors), the embodiments are not limited thereto, and at least one sensor may be another type of sensor (e.g., photodiode, capacitive sensor, inductive sensor and / or sensor capable of detecting other physical quantities).

[0145] Figure 12 This is a diagram illustrating the displacement of an image sensor according to an embodiment of the present disclosure in a first direction substantially orthogonal to the optical axis. Figure 13 This illustrates the application of an embodiment of the present disclosure to... Figure 12 A graph showing the voltage drive waveform of the first piezoelectric actuator 450.

[0146] refer to Figure 12 and Figure 13 The camera module 400 may include a lens assembly 420, an image sensor 430, and a first piezoelectric actuator 450. The first piezoelectric actuator 450 may displace the lens assembly 420 or the image sensor 430 in a first direction (e.g., the -X direction) substantially orthogonal to the optical axis (e.g., the Z-axis) via a slip and adhesive manner, using the difference between the extension and contraction vibration velocities of the vibrator. For example, the first piezoelectric actuator 450 may be controlled by pulse width modulation (PWM).

[0147] During one cycle of the driving waveform, the first resonator 450A can be applied with an alternating current (AC) voltage to form a first segment (adhesive segment) having a first voltage and a first length, and a second segment (slip segment) having a second voltage and a second length. Here, the first and second voltages can have substantially the same amplitude and opposite potentials (e.g., the first voltage has a first signage (e.g., positive), and the second voltage has a second signage opposite to the first signage (e.g., negative)). The second length can be less than the first length (e.g., first length: second length = 7:3).

[0148] During one cycle of the driving waveform, the second resonator 450B can be applied an AC voltage to have a third segment and a fourth segment, the third segment having a third voltage and a third length, and the fourth segment having a fourth voltage and a fourth length. Here, the third and fourth voltages can have substantially the same amplitude and opposite potentials (e.g., the third voltage has a first sign (e.g., positive), and the fourth voltage has a second sign (e.g., negative) opposite to the first sign). The third length can be substantially the same as the fourth length (e.g., third length: fourth length = 5:5).

[0149] During one cycle of the driving waveform, the third resonator 450C can be applied an AC voltage to have a fifth segment (slip segment) and a sixth segment (stick segment), the fifth segment having a fifth voltage and a fifth length, and the sixth segment having a sixth voltage and a sixth length. Here, the fifth and sixth voltages can have substantially the same amplitude and opposite potentials (e.g., the fifth voltage has a first sign (e.g., positive), and the sixth voltage has a second sign opposite to the first sign (e.g., negative)). The fifth length can be substantially the same as the second length, the sixth length can be substantially the same as the first length, and the sixth length can be greater than the fifth length (e.g., fifth length:sixth length = 3:7).

[0150] During one cycle of the driving waveform, the fourth resonator 450D can be applied an AC voltage to have a seventh segment and an eighth segment, the seventh segment having a seventh voltage and a seventh length, and the eighth segment having an eighth voltage and an eighth length. Here, the seventh and eighth voltages can have substantially the same amplitude and opposite potentials (e.g., the seventh voltage has a first sign (e.g., positive), and the eighth voltage has a second sign (e.g., negative) opposite to the first sign). The seventh length can be substantially the same as the third length, the eighth length can be substantially the same as the fourth length, and the seventh length can be substantially the same as the eighth length (e.g., seventh length:eighth length = 5:5).

[0151] Compared to not operating the resonators, operating the resonators (e.g., the second resonator 450B and the fourth resonator 450D) to have substantially the same segment length in one cycle of the driving waveform can be achieved by reducing the remaining resonators (e.g., the first resonator 450A and the third resonator 450C) and the moving body (e.g., Figures 5 to 7 The friction between the moving bodies (455) is used to reduce the drive loss of the actuator.

[0152] The forward and reverse switching of the lens assembly 420 or the image sensor 430 can be achieved by changing the ratio of the segment lengths within one cycle of the driving waveform (e.g., changing from 7:3 for the first segment to 3:7 or from 3:7 to 7:3).

[0153] In an embodiment not shown, the first piezoelectric actuator 450 may operate only two of the plurality of resonators (e.g., the first resonator 450A and the third resonator 450C), and may not operate the remaining two resonators (e.g., the second resonator 450B and the fourth resonator 450D). For example, a voltage of essentially 0 volts (V) may be applied to the second resonator 450B and the fourth resonator 450D.

[0154] Figure 14 This illustrates the application of an embodiment of the present disclosure to... Figure 11The curve of the voltage drive waveform of the first piezoelectric actuator.

[0155] refer to Figure 14 The first piezoelectric actuator 450 can use a triangular drive waveform to shift the lens assembly 420 or the image sensor 430 in a first direction (e.g., the -X direction) that is substantially orthogonal to the optical axis (e.g., the Z-axis).

[0156] During one cycle of the driving waveform, the first resonator 450A can be applied an AC voltage to form a first segment (adhesive segment) of a first length and a second segment (slip segment) of a second length. Here, the first length can be greater than the second length (e.g., first length: second length = 7:3). The applied voltage can perform a conversion from a first voltage (e.g., negative) of the second symbol to a second voltage (e.g., positive) of the opposite first symbol in the first segment, and a conversion from the second voltage to the first voltage in the second segment.

[0157] During one cycle of the driving waveform, the second resonator 450B can be applied an AC voltage to form a third segment of third length and a fourth segment of fourth length. Here, the third length can be substantially the same as the fourth length (e.g., third length: fourth length = 5:5). The applied voltage can perform a transition from a third voltage (e.g., negative) of the second symbol to a fourth voltage (e.g., positive) of the first symbol opposite to the second symbol in the third segment, and a transition from the fourth voltage to the third voltage in the fourth segment.

[0158] During one cycle of the driving waveform, the third resonator 450C can be applied an AC voltage to have a fifth segment (adhesive segment) of fifth length and a sixth segment (slip segment) of sixth length. Here, the fifth length can be substantially the same as the first length, the sixth length can be substantially the same as the second length, and the fifth length can be greater than the sixth length (e.g., fifth length:sixth length = 7:3). The applied voltage can perform a transition from a fifth voltage (e.g., positive) of the first symbol to a sixth voltage (e.g., negative) of the second symbol opposite to the first symbol in the fifth segment, and a transition from the sixth voltage to the fifth voltage in the sixth segment.

[0159] During one cycle of the driving waveform, the fourth resonator 450D can be applied an AC voltage to have a seventh segment of seventh length and an eighth segment of eighth length. Here, the seventh length can be substantially the same as the third length, the eighth length can be substantially the same as the fourth length, and the seventh length can be substantially the same as the eighth length (e.g., seventh length:eighth length = 5:5). The applied voltage can perform a transition from the seventh voltage of the second symbol (e.g., negative) to the eighth voltage of the first symbol opposite to the second symbol (e.g., positive) in the seventh segment, and a transition from the eighth voltage to the seventh voltage in the eighth segment.

[0160] Figure 15 This is a diagram illustrating an image sensor shifted in a direction opposite to the first direction according to an embodiment of the present disclosure. Figure 16 This illustrates the application of an embodiment of the present disclosure to... Figure 15 The curve of the voltage drive waveform of the first piezoelectric actuator.

[0161] refer to Figure 15 and Figure 16 The camera module 400 may include a lens assembly 420, an image sensor 430, and a first piezoelectric actuator 450. The first piezoelectric actuator 450 can displace the lens assembly 420 or the image sensor 430 in a direction opposite to a first direction (e.g., the +X direction) via a sliding and adhesive manner, using the difference between the extension and contraction vibration velocities of the vibrator. The first piezoelectric actuator 450 may be controlled by PWM.

[0162] During one cycle of the driving waveform, the first resonator 450A can be applied an AC voltage to have a first segment (slip segment) and a second segment (adhesive segment). The first segment has a first voltage and a first length, and the second segment has a second voltage and a second length. Here, the first voltage and the second voltage can have substantially the same amplitude and opposite potentials (e.g., the first voltage has a first sign (e.g., positive), and the second voltage has a second sign opposite to the first sign (e.g., negative)). The second length can be greater than the first length (e.g., first length: second length = 3:7).

[0163] During one cycle of the driving waveform, the second resonator 450B can be applied an AC voltage to have a third segment and a fourth segment, the third segment having a third voltage and a third length, and the fourth segment having a fourth voltage and a fourth length. Here, the third and fourth voltages can have substantially the same amplitude and opposite potentials (e.g., the third voltage has a first sign (e.g., positive), and the fourth voltage has a second sign (e.g., negative) opposite to the first sign). The third length can be substantially the same as the fourth length (e.g., third length: fourth length = 5:5).

[0164] During one cycle of the driving waveform, the third resonator 450C can be applied an AC voltage to have a fifth segment (adhesive segment) and a sixth segment (slip segment). The fifth segment has a fifth voltage and a fifth length, and the sixth segment has a sixth voltage and a sixth length. Here, the fifth and sixth voltages can have substantially the same amplitude and opposite potentials (e.g., the fifth voltage has a first sign (e.g., positive), and the sixth voltage has a second sign (e.g., negative) opposite to the first sign). The fifth length can be substantially the same as the second length, the sixth length can be substantially the same as the first length, and the sixth length can be less than the fifth length (e.g., fifth length:sixth length = 7:3).

[0165] During one cycle of the driving waveform, the fourth resonator 450D can be applied an AC voltage to have a seventh segment and an eighth segment, the seventh segment having a seventh voltage and a seventh length, and the eighth segment having an eighth voltage and an eighth length. Here, the seventh and eighth voltages can have substantially the same amplitude and opposite potentials (e.g., the seventh voltage has a first sign (e.g., positive), and the eighth voltage has a second sign (e.g., negative) opposite to the first sign). The seventh length can be substantially the same as the third length, the eighth length can be substantially the same as the fourth length, and the seventh length can be substantially the same as the eighth length (e.g., seventh length:eighth length = 5:5).

[0166] In an embodiment not shown, the first piezoelectric actuator 450 may operate only two of the plurality of resonators (e.g., the first resonator 450A and the third resonator 450C), and may not operate the remaining two resonators (e.g., the second resonator 450B and the fourth resonator 450D). For example, a voltage of essentially 0V may be applied to the second resonator 450B and the fourth resonator 450D.

[0167] In an embodiment not shown, the first piezoelectric actuator 450 can use any suitable drive waveform to shift the lens assembly 420 or the image sensor 430 in a first direction (e.g., the -X direction) substantially orthogonal to the optical axis (e.g., the Z-axis) or in the opposite direction (e.g., the +X direction).

[0168] Figure 17 This is a diagram illustrating the displacement of an image sensor according to an embodiment of the present disclosure in a second direction substantially orthogonal to the optical axis and the first direction. Figure 18 This illustrates the application of an embodiment of the present disclosure to... Figure 17 A graph showing the voltage drive waveform of the first piezoelectric actuator 450.

[0169] refer to Figure 17 and Figure 18The camera module 400 may include a lens assembly 420, an image sensor 430, and a first piezoelectric actuator 450. The first piezoelectric actuator 450 can, through the difference between the extension and contraction vibration velocities of the vibrator, shift the lens assembly 420 or the image sensor 430 in a sliding and adhesive manner in each of a second direction (e.g., the +Y direction) substantially orthogonal to a first direction (e.g., the +X direction) substantially orthogonal to the optical axis (e.g., the Z-axis) and a second direction (e.g., the +Y direction) substantially orthogonal to the optical axis (e.g., the Z-axis). For example, the first piezoelectric actuator 450 may be controlled by PWM.

[0170] During one cycle of the driving waveform, the first resonator 450A can be applied an AC voltage to have a first segment and a second segment. The first segment has a first voltage and a first length, and the second segment has a second voltage and a second length. Here, the first voltage and the second voltage can have substantially the same amplitude and opposite potentials (e.g., the first voltage has a first sign (e.g., positive), and the second voltage has a second sign opposite to the first sign (e.g., negative)). The first length can be substantially the same as the second length (e.g., first length: second length = 5:5).

[0171] During one cycle of the driving waveform, the second resonator 450B can be applied an AC voltage to have a third segment (adhesive segment) and a fourth segment (slip segment), the third segment having a third voltage and a third length, and the fourth segment having a fourth voltage and a fourth length. Here, the third and fourth voltages can have substantially the same amplitude and opposite potentials (e.g., the third voltage has a first sign (e.g., positive), and the fourth voltage has a second sign (e.g., negative) opposite to the first sign). The fourth length can be less than the third length (e.g., third length: fourth length = 7:3).

[0172] During one cycle of the driving waveform, the third resonator 450C can be applied an AC voltage to have a fifth segment and a sixth segment, the fifth segment having a fifth voltage and a fifth length, and the sixth segment having a sixth voltage and a sixth length. Here, the fifth and sixth voltages can have substantially the same amplitude and opposite potentials (e.g., the fifth voltage has a first sign (e.g., positive), and the sixth voltage has a second sign opposite to the first sign (e.g., negative)). The fifth length can be substantially the same as the first length, the sixth length can be substantially the same as the second length, and the fifth length can be substantially the same as the sixth length (e.g., fifth length:sixth length = 5:5).

[0173] During one cycle of the driving waveform, the fourth resonator 450D can be applied an AC voltage to have a seventh segment (slip segment) and an eighth segment (sticky segment), the seventh segment having a seventh voltage and a seventh length, and the eighth segment having an eighth voltage and an eighth length. Here, the seventh and eighth voltages can have substantially the same amplitude and opposite potentials (e.g., the seventh voltage has a first sign (e.g., positive), and the eighth voltage has a second sign opposite to the first sign (e.g., negative)). The seventh length can be substantially the same as the fourth length, the eighth length can be substantially the same as the third length, and the eighth length can be greater than the seventh length (e.g., seventh length:eighth length = 3:7).

[0174] In an embodiment not shown, the first piezoelectric actuator 450 may operate only two of the plurality of resonators (e.g., the second resonator 450B and the fourth resonator 450D), and may not operate the remaining two resonators (e.g., the first resonator 450A and the third resonator 450C). For example, a voltage of essentially 0V may be applied to the first resonator 450A and the third resonator 450C.

[0175] Figure 19 This illustrates the application of an embodiment of the present disclosure to... Figure 17 The curve of the voltage drive waveform of the first piezoelectric actuator.

[0176] refer to Figure 19 The first piezoelectric actuator 450 can use a triangular drive waveform to shift the lens assembly 420 or the image sensor 430 in each of a second direction (e.g., the +Y direction) orthogonal to the optical axis (e.g., the Z-axis) and a first direction (e.g., the +X direction) substantially orthogonal to the optical axis.

[0177] For example, during one cycle of the driving waveform, the first resonator 450A can be applied an AC voltage to form a first segment of a first length and a second segment of a second length. Here, the second length can be substantially the same as the first voltage (e.g., first length: second length = 5:5). The applied voltage can perform a conversion from a first voltage (e.g., negative) of the second symbol to a second voltage (e.g., positive) of the opposite first symbol in the first segment, and a conversion from the second voltage to the first voltage in the second segment.

[0178] During one cycle of the driving waveform, the second resonator 450B can be applied an AC voltage to have a third segment (adhesive segment) of a third length and a fourth segment (slip segment) of a fourth length. Here, the third length can be greater than the fourth length (e.g., third length: fourth length = 7:3). The applied voltage can perform a transition from a third voltage (e.g., positive) of the first symbol to a fourth voltage (e.g., negative) of the second symbol opposite to the first symbol in the third segment, and a transition from the fourth voltage to the third voltage in the second segment.

[0179] During one cycle of the driving waveform, the third resonator 450C can be applied an AC voltage to form a fifth segment of fifth length and a sixth segment of sixth length. Here, the fifth length can be substantially the same as the first length, the sixth length can be substantially the same as the second length, and the fifth length can be substantially the same as the sixth length (e.g., fifth length:sixth length = 5:5). The applied voltage can perform a transition from a fifth voltage of the second symbol (e.g., negative) to a sixth voltage of the first symbol opposite to the second symbol (e.g., positive) in the fifth segment, and a transition from the sixth voltage to the fifth voltage in the sixth segment.

[0180] During one cycle of the driving waveform, the fourth resonator 450D can be applied an AC voltage to create a seventh segment (adhesive segment) with a seventh length and an eighth segment (slip segment) with an eighth length. Here, the seventh length can be substantially the same as the third length, the eighth length can be substantially the same as the fourth length, and the seventh length can be greater than the eighth length (e.g., seventh length:eighth length = 7:3). The applied voltage can perform a transition in the seventh segment from the seventh voltage of the second symbol (e.g., negative) to the eighth voltage of the first symbol opposite to the second symbol (e.g., positive), and a transition from the eighth voltage to the seventh voltage in the eighth segment.

[0181] In an embodiment not shown, the first piezoelectric actuator 450 may operate only two of the plurality of resonators (e.g., the second resonator 450B and the fourth resonator 450D), and may not operate the remaining two resonators (e.g., the first resonator 450A and the third resonator 450C). For example, a voltage of essentially 0V may be applied to the first resonator 450A and the third resonator 450C.

[0182] Figure 20 This is a diagram illustrating an image sensor shifted in a direction opposite to the second direction according to an embodiment of the present disclosure. Figure 21 This illustrates the application of an embodiment of the present disclosure to... Figure 20 The curve of the voltage drive waveform of the first piezoelectric actuator.

[0183] refer to Figure 20 and Figure 21 The camera module 400 may include a lens assembly 420, an image sensor 430, and a first piezoelectric actuator 450. The first piezoelectric actuator 450 can displace the lens assembly 420 or the image sensor 430 in a direction opposite to a second direction (e.g., the -Y direction) via a slip and adhesive manner, using the difference between the extension and contraction vibration velocities of the vibrator. The second direction is substantially orthogonal to each of the optical axis (e.g., the Z-axis) and a first direction (e.g., the +X direction) substantially orthogonal to the optical axis. The first piezoelectric actuator 450 may be controlled by PWM.

[0184] During one cycle of the driving waveform, the first resonator 450A can be applied an AC voltage to have a first segment and a second segment, the first segment having a first voltage and a first length, and the second segment having a second voltage and a second length. Here, the first voltage and the second voltage can have substantially the same amplitude and opposite potentials (e.g., the first voltage has a first sign (e.g., positive), and the second voltage has a second sign opposite to the first sign (e.g., negative)). The first length can be substantially the same as the first length (e.g., first length: first length = 5:5).

[0185] During one cycle of the driving waveform, the second resonator 450B can be applied an AC voltage to have a third segment (slip segment) and a fourth segment (stick segment), the third segment having a third voltage and a third length, and the fourth segment having a fourth voltage and a fourth length. Here, the third and fourth voltages can have substantially the same amplitude and opposite potentials (e.g., the third voltage has a first sign (e.g., positive), and the fourth voltage has a second sign (e.g., negative) opposite to the first sign). The fourth length can be greater than the third length (e.g., third length: fourth length = 3:7).

[0186] During one cycle of the driving waveform, the third resonator 450C can be applied an AC voltage to have a fifth segment and a sixth segment, the fifth segment having a fifth voltage and a fifth length, and the sixth segment having a sixth voltage and a sixth length. Here, the fifth and sixth voltages can have substantially the same amplitude and opposite potentials (e.g., the fifth voltage has a first sign (e.g., positive), and the sixth voltage has a second sign opposite to the first sign (e.g., negative)). The fifth length can be substantially the same as the first length, the sixth length can be substantially the same as the second length, and the fifth length can be substantially the same as the sixth length (e.g., fifth length:sixth length = 5:5).

[0187] During one cycle of the driving waveform, the fourth resonator 450D can be applied an AC voltage to have a seventh segment (adhesive portion) and an eighth segment (slip portion), the seventh segment having a seventh voltage and a seventh length, and the eighth segment having an eighth voltage and an eighth length. Here, the seventh and eighth voltages can have substantially the same amplitude and opposite potentials (e.g., the seventh voltage has a first sign (e.g., positive), and the eighth voltage has a second sign opposite to the first sign (e.g., negative)). The seventh length can be substantially the same as the fourth length, the eighth length can be substantially the same as the third length, and the eighth length can be less than the seventh length (e.g., seventh length:eighth length = 7:3).

[0188] In an embodiment not shown, the first piezoelectric actuator 450 may operate only two of the plurality of resonators (e.g., the second resonator 450B and the fourth resonator 450D), and may not operate the remaining two resonators (e.g., the first resonator 450A and the third resonator 450C). For example, a voltage of essentially 0V may be applied to the first resonator 450A and the third resonator 450C.

[0189] In an embodiment not shown, the first piezoelectric actuator 450 can use any suitable drive waveform to shift the lens assembly 420 or the image sensor 430 in a second direction (e.g., +Y direction) that is substantially orthogonal to each of the first directions (e.g., +X direction) and the optical axis (e.g., Z-axis) or in the opposite direction (e.g., -Y direction).

[0190] Figure 22 This is a diagram illustrating an image sensor rotating relative to an optical axis in a first rotational direction according to an embodiment of the present disclosure. Figure 23 This illustrates the application of an embodiment of the present disclosure to... Figure 22 The curve of the voltage drive waveform of the first piezoelectric actuator.

[0191] refer to Figure 22 and Figure 23 The camera module 400 may include a lens assembly 420, an image sensor 430, and a first piezoelectric actuator 450. The first piezoelectric actuator 450 may use the difference between the extension and contraction vibration velocities of a vibrator to slide and adhere the lens assembly 420 or the image sensor 430 relative to the optical axis (e.g., the Z-axis) in a first rotational direction (e.g., ...). Figure 22 It rolls in a counter-clockwise direction. For example, the first piezoelectric actuator 450 can be controlled by PWM.

[0192] During one cycle of the driving waveform, the first resonator 450A can be applied an AC voltage to have a first segment (adhesive portion) and a second segment (slip portion). The first segment has a first voltage and a first length, and the second segment has a second voltage and a second length. Here, the first voltage and the second voltage can have substantially the same amplitude and opposite potentials (e.g., the first voltage has a first sign (e.g., positive), and the second voltage has a second sign opposite to the first sign (e.g., negative)). The second length can be less than the first length (e.g., first length: second length = 7:3).

[0193] During one cycle of the driving waveform, the second resonator 450B can be applied an AC voltage to have a third segment (slip segment) and a fourth segment (stick segment), the third segment having a third voltage and a third length, and the fourth segment having a fourth voltage and a fourth length. Here, the third and fourth voltages can have substantially the same amplitude and opposite potentials (e.g., the third voltage has a first sign (e.g., positive), and the fourth voltage has a second sign (e.g., negative) opposite to the first sign). The third length can be substantially the same as the second length, the fourth length can be substantially the same as the first length, and the fourth length can be greater than the third length (e.g., third length: fourth length = 3:7).

[0194] During one cycle of the driving waveform, the third resonator 450C can be supplied with an AC voltage to form a fifth segment (adhesive segment) with a fifth voltage and a fifth length, and a sixth segment (slip segment) with a sixth voltage and a sixth length. Here, the fifth and sixth voltages can have substantially the same amplitude and opposite potentials (e.g., the fifth voltage has a first sign (e.g., positive), and the sixth voltage has a second sign opposite to the first sign (e.g., negative)). The fifth length can be substantially the same as the first length, the sixth length can be substantially the same as the second length, and the sixth length can be less than the fifth length (e.g., fifth length:sixth length = 7:3).

[0195] During one cycle of the driving waveform, the fourth resonator 450D can be applied an AC voltage to have a seventh segment (slip segment) and an eighth segment (sticky segment), the seventh segment having a seventh voltage and a seventh length, and the eighth segment having an eighth voltage and an eighth length. Here, the seventh and eighth voltages can have substantially the same amplitude and opposite potentials (e.g., the seventh voltage has a first sign (e.g., positive), and the eighth voltage has a second sign (e.g., negative) opposite to the first sign). The seventh length can be substantially the same as the sixth length, the eighth length can be substantially the same as the fifth length, and the eighth length can be greater than the seventh length (e.g., seventh length:eighth length = 3:7).

[0196] In an embodiment not shown, the first piezoelectric actuator 450 may operate only two of the plurality of resonators and may not operate the remaining two resonators. In the example, an AC voltage may be applied to each of the first resonator 450A and the second resonator 450B, and a voltage of approximately 0V may be applied to each of the third resonator 450C and the fourth resonator 450D. (This is repeated three times in the original text.)

[0197] Figure 24 This illustrates the application of an embodiment of the present disclosure to... Figure 21 The curve of the voltage drive waveform of the first piezoelectric actuator.

[0198] refer to Figure 24 The first piezoelectric actuator 450 can use a triangular drive waveform to cause the lens assembly 420 or image sensor 430 to rotate relative to the optical axis (e.g., the Z-axis) in a first rotational direction (e.g., ...). Figure 22 Scrolling in the counter-clockwise direction.

[0199] During one cycle of the driving waveform, the first resonator 450A can be applied an AC voltage to form a first segment (adhesive segment) of a first length and a second segment (slip segment) of a second length. Here, the first length can be greater than the second length (e.g., first length: second length = 7:3). The applied voltage can perform a conversion from a first voltage (e.g., negative) of the second symbol to a second voltage (e.g., positive) of the opposite first symbol in the first segment, and a conversion from the second voltage to the first voltage in the second segment.

[0200] During one cycle of the driving waveform, the second resonator 450B can be applied an AC voltage to have a third segment (adhesive segment) of a third length and a fourth segment (slip segment) of a fourth length. Here, the third length can be substantially the same as the first length, the fourth length can be substantially the same as the second length, and the fourth length can be less than the third length (e.g., third length: fourth length = 7:3). The applied voltage can perform a transition from a third voltage (e.g., positive) of the first symbol to a fourth voltage (e.g., negative) of the second symbol opposite to the first symbol in the third segment, and a transition from the fourth voltage to the third voltage in the fourth segment.

[0201] During one cycle of the driving waveform, the third resonator 450C can be applied an AC voltage to have a fifth segment (adhesive segment) of fifth length and a sixth segment (slip segment) of sixth length. Here, the fifth length can be substantially the same as the first length, the sixth length can be substantially the same as the second length, and the sixth length can be less than the fifth length (e.g., fifth length:sixth length = 7:3). The applied voltage can perform a transition from a fifth voltage of the second symbol (e.g., negative) to a sixth voltage of the first symbol opposite to the second symbol (e.g., positive) in the fifth segment, and a transition from the sixth voltage to the fifth voltage in the sixth segment.

[0202] During one cycle of the driving waveform, the fourth resonator 450D can be applied an AC voltage to create a seventh segment (adhesive segment) with a seventh length and an eighth segment (slip segment) with an eighth length. Here, the seventh length can be substantially the same as the fifth length, the eighth length can be substantially the same as the sixth length, and the eighth length can be less than the seventh length (e.g., seventh length:eighth length = 7:3). The applied voltage can perform a transition from the seventh voltage (e.g., positive) of the first symbol to the eighth voltage (e.g., negative) of the second symbol opposite to the first symbol in the seventh segment, and a transition from the eighth voltage to the seventh voltage in the eighth segment.

[0203] In an embodiment not shown, the first piezoelectric actuator 450 can utilize any suitable drive waveform to cause the lens assembly 420 or image sensor 430 to rotate relative to the optical axis (e.g., the Z-axis) in a first rotational direction (e.g., ...). Figure 22 Scrolling in the counter-clockwise direction.

[0204] Figure 25 This is a diagram illustrating an image sensor according to an embodiment of the present disclosure rolling relative to the optical axis in a second rotational direction opposite to the first rotational direction. Figure 26 This illustrates the application of an embodiment of the present disclosure to... Figure 25 A graph showing the voltage drive waveform of the first piezoelectric actuator 450.

[0205] refer to Figure 25 and Figure 26 The camera module 400 may include a lens assembly 420, an image sensor 430, and a first piezoelectric actuator 450. The first piezoelectric actuator 450 may use the difference between the extension and contraction vibration velocities of a vibrator to slip-adhere the lens assembly 420 or the image sensor 430 relative to the optical axis (e.g., the Z-axis) in a second rotational direction (e.g., ...). Figure 25 It rolls clockwise. For example, the first piezoelectric actuator 450 can be controlled by PWM.

[0206] During one cycle of the driving waveform, the first resonator 450A can be applied an AC voltage to have a first segment (slip segment) and a second segment (adhesive segment). The first segment has a first voltage and a first length, and the second segment has a second voltage and a second length. Here, the first voltage and the second voltage can have substantially the same amplitude and opposite potentials (e.g., the first voltage has a first sign (e.g., positive), and the second voltage has a second sign opposite to the first sign (e.g., negative)). The second length can be greater than the first length (e.g., first length: second length = 3:7).

[0207] During one cycle of the driving waveform, the second resonator 450B can be applied an AC voltage to have a third segment (adhesive segment) and a fourth segment (slip segment). The third segment has a third voltage and a third length, and the fourth segment has a fourth voltage and a fourth length. Here, the third and fourth voltages can have substantially the same amplitude and opposite potentials (e.g., the third voltage has a first sign (e.g., positive), and the fourth voltage has a second sign (e.g., negative) opposite to the first sign). The third length can be substantially the same as the second length, the fourth length can be substantially the same as the first length, and the fourth length can be less than the third length (e.g., third length: fourth length = 7:3).

[0208] During one cycle of the driving waveform, the third resonator 450C can be applied an AC voltage to have a fifth segment (slip segment) and a sixth segment (stick segment), the fifth segment having a fifth voltage and a fifth length, and the sixth segment having a sixth voltage and a sixth length. Here, the fifth and sixth voltages can have substantially the same amplitude and opposite potentials (e.g., the fifth voltage has a first sign (e.g., positive), and the sixth voltage has a second sign opposite to the first sign (e.g., negative)). The fifth length can be substantially the same as the first length, the sixth length can be substantially the same as the second length, and the sixth length can be greater than the fifth length (e.g., fifth length:sixth length = 3:7).

[0209] During one cycle of the driving waveform, the fourth resonator 450D can be applied an AC voltage to have a seventh segment (adhesive portion) and an eighth segment (slip portion), the seventh segment having a seventh voltage and a seventh length, and the eighth segment having an eighth voltage and an eighth length. Here, the seventh and eighth voltages can have substantially the same amplitude and opposite potentials (e.g., the seventh voltage has a first sign (e.g., positive), and the eighth voltage has a second sign (e.g., negative) opposite to the first sign). The seventh length can be substantially the same as the sixth length, the eighth length can be substantially the same as the fifth length, and the eighth length can be less than the seventh length (e.g., seventh length:eighth length = 7:3).

[0210] In an embodiment not shown, the first piezoelectric actuator 450 may operate only two of the plurality of resonators and may not operate the remaining two resonators. In the example, an AC voltage may be applied to each of the first resonator 450A and the second resonator 450B, and a voltage of approximately 0V may be applied to each of the third resonator 450C and the fourth resonator 450D. (This is repeated three times in the original text.)

[0211] Figure 27 This illustrates the application of an embodiment of the present disclosure to... Figure 24 The curve of the voltage drive waveform of the first piezoelectric actuator.

[0212] refer to Figure 27 The first piezoelectric actuator 450 can use a triangular drive waveform to cause the lens assembly 420 or image sensor 430 to rotate relative to the optical axis (e.g., the Z-axis) in a second rotational direction (e.g., ...). Figure 25 Scrolling in a clockwise direction.

[0213] During one cycle of the driving waveform, the first resonator 450A can be applied an AC voltage to form a first segment (adhesive segment) of a first length and a second segment (slip segment) of a second length. Here, the first length can be greater than the second length (e.g., first length: second length = 7:3). The applied voltage can perform a conversion from a first voltage (e.g., positive) to a second voltage (e.g., negative) of the opposite symbol in the first segment, and a conversion from the second voltage to the first voltage in the second segment.

[0214] During one cycle of the driving waveform, the second resonator 450B can be applied an AC voltage to have a third segment (adhesive segment) of a third length and a fourth segment (slip segment) of a fourth length. Here, the third length can be substantially the same as the first length, the fourth length can be substantially the same as the second length, and the fourth length can be less than the third length (e.g., third length: fourth length = 7:3). The applied voltage can perform a transition from a third voltage (e.g., negative) of the second symbol to a fourth voltage (e.g., positive) of the opposite first symbol in the third segment, and a transition from the fourth voltage to the third voltage in the fourth segment.

[0215] During one cycle of the driving waveform, the third resonator 450C can be applied an AC voltage to have a fifth segment (adhesive segment) of fifth length and a sixth segment (slip segment) of sixth length. Here, the fifth length can be substantially the same as the first length, the sixth length can be substantially the same as the second length, and the sixth length can be less than the fifth length (e.g., fifth length:sixth length = 7:3). The applied voltage can perform a transition from a fifth voltage (e.g., positive) of the first symbol to a sixth voltage (e.g., negative) of the second symbol opposite to the first symbol in the fifth segment, and a transition from the sixth voltage to the fifth voltage in the sixth segment.

[0216] During one cycle of the driving waveform, the fourth resonator 450D can be applied an AC voltage to create a seventh segment (adhesive segment) with a seventh length and an eighth segment (slip segment) with an eighth length. Here, the seventh length can be substantially the same as the fifth length, the eighth length can be substantially the same as the sixth length, and the eighth length can be less than the seventh length (e.g., seventh length:eighth length = 7:3). The applied voltage can perform a transition from the seventh voltage (e.g., negative) of the second symbol to the eighth voltage (e.g., positive) of the first symbol opposite to the second symbol in the seventh segment, and a transition from the eighth voltage to the seventh voltage in the eighth segment.

[0217] In an embodiment not shown, the first piezoelectric actuator 450 can utilize any suitable drive waveform to cause the lens assembly 420 or image sensor 430 to rotate relative to the optical axis (e.g., the Z-axis) in a second rotational direction (e.g., ...). Figure 25 Scrolling in a clockwise direction.

[0218] Figure 28 This is a perspective view of an image sensor and a second piezoelectric actuator 460 according to an embodiment of the present disclosure. Figure 29 This is an exploded perspective view of an image sensor and a second piezoelectric actuator 460 according to an embodiment of the present disclosure. Figure 30 According to embodiments of this disclosure Figure 29 Plan view of the fifth resonator 461. Figure 31 It is according to the embodiments of this disclosure along Figure 30 A cross-sectional view of line 31-31 of the second piezoelectric actuator 460. Figure 32 This illustrates the application of an embodiment of the present disclosure to... Figure 28 The voltage drive waveform of the second piezoelectric actuator 460 is shown in the graph. Figure 33 This illustrates the application of an embodiment of the present disclosure to... Figure 28 The voltage drive waveform of the second piezoelectric actuator 460 is shown in the graph.

[0219] refer to Figures 28 to 33 The camera module 400 may include an image sensor 430 and a second piezoelectric actuator 460.

[0220] The second piezoelectric actuator 460 may include a fifth resonator 461. The fifth resonator 461 may generate electricity in the direction along the optical axis OA (e.g., the Z-axis direction).

[0221] The fifth resonator 461 may include a fifth vibrator 462A configured to generate vibration. The fifth resonator 461 may also include a sixth vibrator 462B configured to generate vibration. The fifth vibrator 462A and the sixth vibrator 462B may generate vibration in a radial mode. The fifth vibrator 462A and the sixth vibrator 462B may be arranged opposite to each other. The fifth vibrator 462A and the sixth vibrator 462B may each include a piezoelectric material.

[0222] The fifth resonator 461 may include an elastic plate 463. The elastic plate 463 may include a first end 463A serving as a fixed end, a second end 463B serving as a free end, and an extension member 463C extending between the first end 463A and the second end 463B.

[0223] The second end 463B (also referred to as a "contact") can vary the length of its displacement in the radial direction (e.g., the Y-axis direction) along the optical axis (e.g., the Z-axis) based on the voltage applied to the fifth vibrator 462A and the sixth vibrator 462B. For example, when a 180-degree inverted signal is applied to the fifth vibrator 462A and the sixth vibrator 462B while ground potential is applied to the elastic plate 463, the other vibrator can contract in the radial direction while one of the vibrators 462A and the sixth vibrator 462B extends in the radial direction, thus allowing the elastic plate 463 to bend. The second end 463B of the elastic plate 463 can contact the carrier 467 and repetitively vibrate in the optical axis direction (e.g., the Z-axis direction).

[0224] The extender 463C may have a generally annular shape. The extender 463C may extend in a radial direction orthogonal to the optical axis OA. The annular structure of the elastic plate 463 enables the uniform transmission of driving force during AF operation. A fifth vibrator 462A may be disposed in a first surface of the extender 463C (e.g., a surface in the +Z direction), and a sixth vibrator 462B may be disposed in a second surface of the extender 463C opposite to the first surface (e.g., a surface in the -Z direction).

[0225] The elastic plate 463 may include a skirt 463D that extends in a direction substantially orthogonal to the extension direction of the extension member 463C.

[0226] The fifth resonator 461 may include a support 464 configured to support the elastic plate 463. The support 464 may have a generally annular shape.

[0227] The second piezoelectric actuator 460 may include a second movable body 466. The second movable body 466 may include a carrier 467 configured to carry the image sensor 430. The carrier 467 may include an elastic body 467A pressed by a second end 463B of an elastic plate 463. The elastic body 467A may contact the second end 463B of the elastic plate 463. When vibrational displacement occurs in the fifth vibrator 462A and the sixth vibrator 462B, the second end 463B of the elastic plate 463 may move the carrier 467 in a direction along the optical axis (e.g., the Z-axis direction).

[0228] The carrier 467 may include a first support member 467B configured to support the elastomer 467A. The first support member 467B may be disposed on a first side of the elastomer 467A (e.g., a side in the -Z direction). The carrier 467 may include a second support member 467C configured to support the elastomer 467A. The second support member 467C may be coupled to the first support member 467B. The second support member 467C may be disposed on a second side of the elastomer 467A opposite to the first side (e.g., a side in the +Z direction).

[0229] The second movable body 466 may include a second movable plate 468. The second movable plate 468 may support the image sensor 430. The second movable plate 468 may have a basic polygonal shape (e.g., a quadrilateral shape). The second movable plate 468 may uniformly transfer power to the image sensor 430 during AF operation.

[0230] The camera module 400 may include a second sensing magnet 472. The second sensing magnet 472 may be disposed in a surface of the first support member 467B (e.g., the surface in the -Z direction).

[0231] To move the carrier 467 in the optical axis direction (e.g., the Z-axis direction), the extension and contraction vibration velocities of the fifth vibrator 462A and the sixth vibrator 462B can be controlled by considering the inertia of the weight of the carrier 467 and the adhesion-slippage in the contact surface between the carrier 467 and the elastic plate 463 (e.g., the contact surface between the second end 463B and the elastic body 467A). The extension and contraction vibration velocities of the fifth vibrator 462A and the sixth vibrator 462B can be changed by setting the duty cycle of the PWM of the AC voltage signal applied to the fifth vibrator 462A and the sixth vibrator 462B. In the adhesive state where the fifth vibrator 462A and the sixth vibrator 462B move substantially simultaneously with the carrier 467 ( Figure 32 and 33 (The adhesive portion), the deformation of the second end 463B can proceed at a reduced speed, thereby transmitting increased vibration. While the carrier 467 remains essentially stationary in the predetermined sliding state ( Figure 32 and 33 In the slip section), due to the relatively rapid deformation of the fifth vibrator 462A and the sixth vibrator 462B relative to the carrier 467, the carrier 467 can deviate from its predetermined position in the opposite direction. The carrier 467 can move essentially only in the adhesive section where the fifth vibrator 462A and the sixth vibrator 462B deform at a relatively slow speed. For example, as Figure 32As shown, a ground potential can be applied to the elastic plate 463, and an AC voltage can be applied to one of the fifth vibrator 462A and the sixth vibrator 462B to create an adhesive segment with a long length (positive potential) and a sliding segment with a short length (negative potential). For example, the fifth vibrator 462A, which contracts in a first radial direction (e.g., -Y direction), and the sixth vibrator 462B, which expands in a second radial direction opposite to the first radial direction (e.g., +Y direction), can cause the carrier 467 to move along the optical axis in a first direction (e.g., +Z direction). Furthermore, as... Figure 33 As shown, ground potential can be applied to the elastic plate 463, and AC voltage can be applied to one of the fifth vibrator 462A and the sixth vibrator 462B to create an adhesive segment with a long length (negative potential) and a sliding segment with a short length (positive potential). For example, the fifth vibrator 462A, which extends in a second radial direction (e.g., +Y direction), and the sixth vibrator 462B, which contracts in a first radial direction opposite to the first radial direction (e.g., -Y direction), can move the carrier 467 along the optical axis in a direction opposite to the first direction (e.g., +Z direction) (e.g., -Z direction).

[0232] Figure 34 This illustrates the application of an embodiment of the present disclosure to... Figure 28 The curve of the voltage drive waveform of the second piezoelectric actuator. Figure 35 This illustrates the application of an embodiment of the present disclosure to... Figure 28 The curve of the voltage drive waveform of the second piezoelectric actuator.

[0233] refer to Figure 34 and Figure 35 The AC voltage applied to the fifth vibrator 462A and the sixth vibrator 462B can have a triangular drive waveform.

[0234] In order to move the carrier 467 along the optical axis in the first direction (e.g., the +Z direction), such as Figure 34 As shown, during one cycle of the driving waveform, an AC voltage with a first segment (adhesive portion) having a first length and a second segment (slip segment) having a second length can be applied to one of the fifth vibrator 462A and the sixth vibrator 462B. Here, the first length can be greater than the second length. The applied voltage can perform a conversion from a first voltage (e.g., negative) of the second symbol to a second voltage (e.g., positive) of the opposite first symbol in the first segment, and a conversion from the second voltage to the first voltage in the second segment.

[0235] In order to move the carrier 467 along the optical axis in a second direction (e.g., -Z direction) opposite to the first direction (e.g., +Z direction), as... Figure 35As shown, during one cycle of the driving waveform, an AC voltage with a third segment (adhesive portion) having a third length and a fourth segment (slip segment) having a fourth length can be applied to one of the fifth vibrator 462A and the sixth vibrator 462B. Here, the third length can be greater than the fourth length. The applied voltage can perform a conversion from a third voltage (e.g., positive) of the first symbol to a fourth voltage (e.g., negative) of the second symbol opposite to the second symbol in the third segment, and a conversion from the second voltage to the first voltage in the fourth segment.

[0236] In an embodiment not shown, the AC voltage applied to the fifth vibrator 462A and the sixth vibrator 462B can have any suitable drive waveform.

[0237] Figure 36 This is a perspective view of a camera module according to an embodiment of the present disclosure. Figure 37 This is an exploded perspective view of a camera module according to an embodiment of the present disclosure. Figure 38 It is according to the embodiments of this disclosure along Figure 36 A cross-sectional view of the camera module taken from line 38-38.

[0238] refer to Figures 36 to 38 Camera module 400-1 (e.g., Figure 1 Camera module 180 Figure 2 Camera module 180 Figure 3 and Figure 4 The second camera module 380B and / or the third camera module 380D, and / or Figures 5 to 35 The camera module 400 may include a camera housing 410, a lens assembly 420, an image sensor 430, a first piezoelectric actuator 450, and a second piezoelectric actuator 460. The camera housing 410 may include a base 411 and a camera cover 412. The lens assembly 420 may include at least one lens 421 having an optical axis OA and a lens housing 422. The first piezoelectric actuator 450 may include a first resonator 450A, a second resonator 450B, a third resonator 450C, a fourth resonator 450D, and a first moving body 455. The second piezoelectric actuator 460 may include a fifth resonator 461 and a second moving body 466.

[0239] The camera housing 410 may include an inner cover 414. The inner cover 414 may secure the vibrator 451 (e.g., Figures 5 to 35 The first vibrator 451A, the second vibrator 451B, the third vibrator 451C, and / or the fourth vibrator 451D. The inner cover 414 may be disposed between the base 411 and the camera cover 412.

[0240] Figure 39 This is a perspective view of a camera module according to an embodiment of the present disclosure. Figure 40 This is an exploded perspective view of a camera module according to an embodiment of the present disclosure. Figure 41 This is an exploded perspective view showing the sensor arrangement structure of a camera module according to an embodiment of the present disclosure.

[0241] refer to Figures 39 to 41 Camera module 400-2 (e.g., Figure 1 Camera module 180 Figure 2 Camera module 180 Figure 3 and Figure 4 The second camera module 380B and / or the third camera module 380D, Figures 5 to 35 Camera module 400 and / or Figures 36 to 38 The camera module 400-1 may include a camera housing 410, a lens assembly 420, an image sensor 430, and a first piezoelectric actuator 450-2 (e.g., Figures 5 to 35 The first piezoelectric actuator 450 and / or Figures 36 to 38 The first piezoelectric actuator 450), the second piezoelectric actuator 460-2 (e.g., Figures 5 to 35 The second piezoelectric actuator 460 and / or Figures 36 to 38 The second piezoelectric actuator 460-2 may include a second piezoelectric actuator 460, a plurality of first sensors 473, a second sensor 474, a plurality of first sensing magnets 471 and a second sensing magnet 472. The camera housing 410 may include a base 411, a camera cover 412, and a PCB 413. The lens assembly 420 may include at least one lens 421 having an optical axis OA and a lens housing 422. The first piezoelectric actuator 450-2 may include: a first resonator 450A, including a first vibrator 451A and a first contact 452A; a second resonator 450B, including a second vibrator 451B and a second contact 452B; a third resonator 450C, including a third vibrator 451C and a third contact 452C; and a fourth resonator 450D, including a fourth vibrator 451D and a fourth contact 452D. The second piezoelectric actuator 460-2 may include a fifth resonator 461 and a second moving body 466. The second moving body 466 may include a carrier 467.

[0242] The first piezoelectric actuator 450-2 may include a first movable body 455-2 (e.g., Figures 5 to 35 The first movable body 455-2 may include a substrate 455-21 and a wall 455-22 disposed on the substrate 455-21. The wall 455-22 may extend in the circumferential direction of the substrate 455-21. The wall 455-22 may support the second movable body 466. The substrate 455-21 and the wall 455-22 may be integrally formed into a component.

[0243] Substrate 455-21 may include a first elastically deformable region 457A-2 (e.g., Figures 8 to 10 The first elastically deformable region 457A), the second elastically deformable region 457B-2 (for example, Figures 8 to 10 The second elastically deformable region 457B), the third elastically deformable region 457C-2 (for example, Figures 8 to 10 The first elastically deformable region 457A-2) and the fourth elastically deformable region 457D-2 (e.g., Figures 8 to 10 The fourth elastic deformable region 457D).

[0244] The first elastically deformable region 457A-2 can be formed as a protruding tongue at one edge (e.g., the edge in the -Y direction) adjacent to a first angle between two adjacent edges (e.g., the edge in the -Y direction and the edge in the +X direction) of the substrate 455-21. The second elastically deformable region 457B-2 can be formed as a protruding tongue at another edge (e.g., the edge in the +X direction) adjacent to the first angle.

[0245] The third elastically deformable region 457C-2 can be formed as a protruding tongue between two adjacent edges of the substrate 455-21 (e.g., the edge in the +Y direction and the edge in the -X direction) and at an edge adjacent to the second corner opposite to the first corner (e.g., the edge in the +Y direction). The fourth elastically deformable region 457C-2 can be formed as a protruding tongue at another edge adjacent to the second corner (e.g., the edge in the -X direction).

[0246] Multiple first sensing magnets 471 may be disposed on the corner regions of the substrate 455-21. Multiple first sensing magnets 471 may be disposed inside the wall 455-22. Second sensing magnets 472 may be disposed in a surface of the carrier 467 (e.g., the surface in the -Z direction).

[0247] One aspect of this disclosure provides a camera module including a piezoelectric actuator.

[0248] Camera module 400 or 400-1 may include: a lens 421 having an optical axis OA; an image sensor 430 configured to receive light passing through the lens 421; and a first piezoelectric actuator 450 configured to move the lens 421 or the image sensor 430 in a direction substantially orthogonal to the optical axis OA. The first piezoelectric actuator 450 may include: a first vibrator 451A configured to generate vibration; a second vibrator 451B configured to generate vibration; a first moving body 455 including a first elastically deformable region 457A and a second elastically deformable region 457B; a first contact 452A configured to press the first elastically deformable region 457A and configured to transmit vibrations generated from the first vibrator 451A to the first elastically deformable region 457A; and a second contact 452B configured to press the second elastically deformable region 457B and configured to transmit vibrations generated from the second vibrator 451B to the second elastically deformable region 457B.

[0249] At least one of the first vibrator 451A and the second vibrator 451B can be controlled by the difference between the extension vibration velocity and the contraction vibration velocity of the at least one vibrator in a slip and adhesion manner.

[0250] At least one of the first vibrator 451A and the second vibrator 451B can be controlled during one cycle of the driving waveform to have a first segment where at least one vibrator generates one of the stretching and contraction vibrations, and a second segment where at least one vibrator generates the other of the stretching and contraction vibrations. The length of the first segment can be different from the length of the second segment.

[0251] At least one of the first vibrator 451A and the second vibrator 451B can be controlled during one cycle of the driving waveform to have a first segment where at least one vibrator generates one of the stretching and contraction vibrations, and a second segment where at least one vibrator generates the other of the stretching and contraction vibrations. The length of the first segment can be substantially the same as the length of the second segment.

[0252] The first contact 452A can contact the first elastically deformable region 457A. The second contact 452B can contact the second elastically deformable region 457B.

[0253] The first contact 452A may include a metallic material. The second contact 452B may include a metallic material.

[0254] The first contact area between the first contact 452A and the first elastically deformable region 457A may have a first length substantially parallel to the vibration direction of the first vibrator 451A and a first width substantially orthogonal to the vibration direction of the first vibrator 451A. The second contact area between the second contact 452B and the second elastically deformable region 457B may have a second length substantially parallel to the vibration direction of the second vibrator 451B and a second width substantially orthogonal to the vibration direction of the second vibrator 451B. The first width may be greater than the first length. The second width may be greater than the second length. The first width may be substantially greater than or equal to the maximum displacement of the first moving body 455 in the vibration direction of the second vibrator 451B. The second width may be substantially greater than or equal to the maximum displacement of the first moving body 455 in the vibration direction of the first vibrator 451A.

[0255] The first width can be substantially greater than or equal to the maximum displacement of the first moving body 455 in the vibration direction of the second vibrator 451B. The second width can be substantially greater than or equal to the maximum displacement of the first moving body 455 in the vibration direction of the first vibrator 451A.

[0256] The first vibrator 451A can operate in either d33 or d31 mode. The second vibrator 451B can operate in either d33 or d31 mode.

[0257] The first movable body 455 may include a first movable plate 456. A first elastically deformable region 457A and a second elastically deformable region 457B may be bent relative to the first movable plate 456.

[0258] The first vibrator 451A and the first contact 452A can be arranged along a first direction substantially orthogonal to the optical axis OA. The second vibrator 451B and the second contact 452B can be arranged along a second direction substantially orthogonal to the optical axis and the first direction.

[0259] The first vibrator 451A and the first contact 452A may be substantially on the same plane as the second vibrator 451B and the second contact 452B.

[0260] The first movable body 455 may include a third elastically deformable region 457C disposed opposite to the first elastically deformable region 457A and a fourth elastically deformable region 457D disposed opposite to the second elastically deformable region 457B. The first piezoelectric actuator 450 may include: a third vibrator 451C configured to generate vibration; a fourth vibrator 451D configured to generate vibration; a third contact 452C configured to press the third elastically deformable region 457C and configured to transmit the vibration generated from the third vibrator 451C to the third elastically deformable region 457C; and a fourth contact 452D configured to press the fourth elastically deformable region 457D and configured to transmit the vibration generated from the fourth vibrator 451D to the fourth elastically deformable region 457D.

[0261] Camera module 400 or 400-1 may include a second piezoelectric actuator 460 configured to move lens 421 or image sensor 430 in a direction along optical axis OA. The second piezoelectric actuator 460 may include additional vibrators 462A and 462B configured to generate vibrations, a second movable body 466, and a second end 463B configured to press the second movable body 466 and to transmit vibrations generated by the additional vibrators 462A to the second movable body 466.

[0262] The second piezoelectric actuator 460 may include an elastic plate 463, which includes a second end 463B. The elastic plate 463 may contact additional vibrators 462A and 462B.

[0263] The second movable body 466 may include an elastic body 467A pressed by a second end 463B and a first support member 467B configured to support the elastic body 467A and disposed on a first side of the elastic body 467A. The first support member 467B may be supported by the first movable body 455.

[0264] The second movable body 466 can support the elastic body 467A and may include a second support member 467C disposed on the second side of the elastic body 467A opposite to the first side.

[0265] The second piezoelectric actuator 460 may include a second movable plate 468 disposed on the second movable body 466.

[0266] Camera module 400 or 400-1 may include a reflector 440 configured to reflect light passing through lens 421 toward image sensor 430. Reflector 440 may be disposed between lens 421 and image sensor 430.

[0267] The camera module 400-1 may include an inner cover 414 configured to fix a first vibrator 451A and a second vibrator 451B.

[0268] Electronic device 301 may include camera module 400 or 400-1.

[0269] According to embodiments of this disclosure, precise linear motion can be generated in a limited space.

[0270] According to embodiments of this disclosure, the structure of the camera module can be simplified, and the piezoelectric actuator and drive section can be directly coupled to achieve high drive efficiency and reduce the power required for drive.

[0271] According to embodiments of this disclosure, vibrations generated from a piezoelectric actuator can be uniformly distributed in the target component, thereby maintaining or increasing image resolution.

[0272] According to embodiments of this disclosure, increased resolution can be obtained during focus and magnification adjustment.

[0273] According to embodiments of this disclosure, the size of the actuator can be reduced.

[0274] According to embodiments of this disclosure, the effect of vibrations caused by interference having a frequency higher than the typical vibration frequency (e.g., hand tremor frequency) on the actuator can be reduced, and the interference can be actively prevented.

[0275] According to embodiments of this disclosure, image distortion can be reduced or prevented.

[0276] According to embodiments of this disclosure, since no separate bootloader is required, the complexity of the module can be reduced and the module can be simplified.

[0277] According to embodiments of this disclosure, the rolling motion of a lens or image sensor can be achieved solely through piezoelectric control.

[0278] The effects of the camera module according to the embodiments are not limited to those described above, and those skilled in the art can clearly understand from the description of this disclosure other effects not mentioned.

[0279] The embodiments disclosed herein are intended to be illustrative and not restrictive. Various modifications may be made to the detailed description of this disclosure, including the scope of the appended claims and their equivalents. Any embodiments described herein may be used in combination with the embodiments described herein.

Claims

1. A camera module (400; 400-1), including: Lens (421), having an optical axis (OA); An image sensor (430) is configured to receive light passing through a lens (421); as well as A first piezoelectric actuator (450) is configured to move a lens (421) or an image sensor (430) in a direction substantially orthogonal to OA. The first piezoelectric actuator (450) includes: The first vibrator (451A) is configured to generate vibration; The second vibrator (451B) is configured to generate vibration; The first moving body (455) includes a first elastically deformable region (457A) and a second elastically deformable region (457B). A first contact (452A) is configured to press a first elastically deformable region (457A) and is configured to transmit vibrations generated from a first vibrator (451A) to the first elastically deformable region (457A); and The second contact (452B) is configured to press the second elastically deformable region (457B) and is configured to transmit vibrations generated from the second vibrator (451B) to the second elastically deformable region (457B).

2. The camera module according to claim 1, wherein, At least one of the first vibrator (451A) and the second vibrator (451B) is controlled in a slip-adhesive manner by the difference between the extension vibration velocity and the contraction vibration velocity of the at least one vibrator.

3. The camera module according to claim 1 or 2, in, At least one of the first vibrator (451A) and the second vibrator (451B) is controlled during one cycle of the driving waveform to have a first segment in which at least one vibrator generates one of the stretching and contraction vibrations, and a second segment in which at least one vibrator generates the other of the stretching and contraction vibrations. The length of the first paragraph is different from the length of the second paragraph.

4. The camera module according to any one of claims 1 to 3, in, At least one of the first vibrator (451A) and the second vibrator (451B) is controlled during one cycle of the driving waveform, so as to have a first segment in which at least one vibrator generates one of the stretching and contraction vibrations, and a second segment in which at least one vibrator generates the other of the stretching and contraction vibrations. The length of the first segment is basically the same as the length of the second segment.

5. The camera module according to any one of claims 1 to 4, in, The first contact (452A) contacts the first elastically deformable region (457A), and The second contact (452B) is in contact with the second elastically deformable region (457B).

6. The camera module according to any one of claims 1 to 5, wherein, The first contact (452A) and the second contact (452B) each comprise a metallic material.

7. The camera module according to any one of claims 1 to 6, in, The first contact area between the first contact (452A) and the first elastically deformable region (457A) has a first length that is substantially parallel to the vibration direction of the first vibrator (451A) and a first width that is substantially orthogonal to the vibration direction of the first vibrator (451A). The second contact area between the second contact (452B) and the second elastically deformable region (457B) has a second length that is substantially parallel to the vibration direction of the second vibrator (451B) and a second width that is substantially orthogonal to the vibration direction of the second vibrator (451B). Wherein, the first width is greater than the first length. Wherein, the second width is greater than the second length. Preferably, the first width is substantially greater than or equal to the maximum displacement of the first moving body (455) in the first longitudinal direction, and The second width is substantially greater than or equal to the maximum displacement of the first moving body (455) in the second longitudinal direction.

8. The camera module according to any one of claims 1 to 7, wherein, The first vibrator (451A) and the second vibrator (451B) operate in either d33 or d31 mode.

9. The camera module according to any one of claims 1 to 8, in, The first movable body (455) also includes a first movable plate (456), and The first elastically deformable region (457A) and the second elastically deformable region (457B) are bent relative to the first moving plate (456).

10. The camera module according to any one of claims 1 to 9, in, The first vibrator (451A) and the first contact (452A) are arranged along a first direction substantially orthogonal to OA, and The second vibrator (451B) and the second contact (452B) are arranged along a second direction that is substantially orthogonal to the first direction and the OA.

11. The camera module according to any one of claims 1 to 10, wherein, The first vibrator (451A) and the first contact (452A) are substantially on the same plane as the second vibrator (451B) and the second contact (452B).

12. The camera module according to any one of claims 1 to 11, wherein, The first moving body (455) also includes: A third elastically deformable region (457C) is disposed opposite to the first elastically deformable region (457A); and A fourth elastically deformable region (457D) is provided opposite to the second elastically deformable region (457B). The first piezoelectric actuator (450) also includes: The third vibrator (451C) is configured to generate vibration; The fourth vibrator (451D) is configured to generate vibration; The third contact (452C) is configured to press the third elastically deformable region (457C) and is configured to transmit vibrations generated from the third vibrator (451C) to the third elastically deformable region (457C); and The fourth contact (452D) is configured to press the fourth elastically deformable region (457D) and is configured to transmit vibrations generated from the fourth vibrator (451D) to the fourth elastically deformable region (457D).

13. The camera module according to any one of claims 1 to 12, further comprising a reflector (440) configured to reflect light passing through the lens (421) toward the image sensor (430), in, The reflector (440) is positioned between the lens (421) and the image sensor (430).

14. The camera module according to any one of claims 1 to 13, further comprising an inner cover (414) configured to fix the first vibrator (451A) and the second vibrator (451B).

15. An electronic device (101; 301) comprising a camera module (400) according to any one of claims 1 to 14.

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