Patent Publication Number: US-2023146186-A1

Title: Camera module

Description:
CROSS REFERENCE TO RELATED APPLICATIONS 
     This application claims the benefit under 35 USC 119(a) of Korean Patent Application No. 10-2021-0151399 filed on Nov. 5, 2021, in the Korean Intellectual Property Office, the entire disclosure of which is incorporated herein by reference for all purposes. 
    
    
     BACKGROUND 
     1. Field 
     The present disclosure relates to a camera module. 
     2. Description of Related Art 
     Recently, camera modules have become standard in portable electronic devices such as mobile terminals, tablet personal computers (PCs), laptop computers, and smartphones. An autofocusing (AF) function and an optical image stabilization (OIS) function have been added to camera modules provided in mobile terminals. 
     Actuators moving a lens in an optical axis direction and a direction perpendicular to the optical axis direction are provided in a camera module to perform an AF function and an OIS function. 
     In the related art, an actuator may move a lens using driving force generated by a magnet and a coil. 
     When a lens is moved using an actuator including a magnet and a coil according to the related art, sizes of the magnet and the coil included in the actuator may cause difficulty in miniaturization of a camera module. 
     In addition, in an actuator including a magnet and a coil, a magnetic field generated by the magnet and the coil may have an electromagnetic effect on the other components of a camera module or other electronic components outside the camera module. 
     SUMMARY 
     This Summary is provided to introduce a selection of concepts in simplified form that are further described below in the Detailed Description. This Summary is not intended to identify key features or essential features of the claimed subject matter, nor is it intended to be used as an aid in determining the scope of the claimed subject matter. 
     In one general aspect, a camera module includes a housing having an internal space; a lens module disposed in the internal space of the housing to be slidably movable with respect to the housing; and a driving portion configured to provide a driving force to move the lens module in an optical axis direction, wherein the driving portion includes a wire portion having a length that changes as power is applied to the wire portion, the lens module includes a guide portion configured to guide a movement of the lens module in the optical axis direction, and the wire portion is in contact with and supported by the guide portion. 
     The guide portion may be in contact with an internal side surface of the housing. 
     The guide portion may include a guide projection protruding from a side surface of the lens module toward an internal side surface of the housing in a direction perpendicular to the optical axis direction. 
     The internal side surface of the housing may include a guide groove accommodating at least a portion of the guide projection. 
     The guide groove may extend in the optical axis direction. 
     The guide portion may include a first guide portion protruding in a first direction perpendicular to the optical axis direction, and a second guide portion protruding in a second direction perpendicular to both the optical axis direction and the first direction. 
     The wire portion may be in contact with and supported by the first guide portion and the second guide portion. 
     The wire portion may include a first wire and a second wire, and the first wire and the second wire may be curved in opposing directions with respect to the guide portion. 
     The camera module may further include two first wire pins disposed in the housing; and two second wire pins disposed in the housing, wherein opposite ends of the first wire may be fixed to the first wire pins, and opposite ends of the second wire may be fixed to the second wire pins. 
     The camera module may further include a fixing projection disposed in the housing to support the first wire and the second wire, and the first wire and the second wire may be disposed to be spaced apart from each other in a direction perpendicular to the optical axis direction. 
     The fixing projection may include a first groove in which the first wire is disposed; and a second groove in which the second wire is disposed, and the first groove and the second groove may be spaced apart from each other in a direction perpendicular to the optical axis direction. 
     The camera module may further include an image sensor module coupled to the housing, wherein the image sensor module may include an image sensor; a first sensor driving portion configured to move the image sensor in a first direction perpendicular to the optical axis direction; and a second sensor driving portion configured to move the image sensor in a second direction perpendicular to both the optical axis direction and the first direction, and the image sensor and the first sensor driving portion may be moved together by the second sensor driving portion. 
     The first sensor driving portion may include a moving plate on which the image sensor is disposed; a first lever rotatably disposed on the moving plate and configured to move the image sensor; and a wire connected to the first lever and having a length that changes in response to power being applied to the wire connected to the first lever. 
     The second sensor driving portion may include a base on which the first sensor driving portion is disposed; a second lever rotatably disposed on the base and configured to move the first sensor driving portion; and a wire connected to the second lever and having a length that changes in response to power being applied to the wire connected to the second lever. 
     The image sensor module may further include a circuit board electrically connected to the image sensor, and at least a portion of the circuit board may be configured to be flexible. 
     In another general aspect, an image sensor module includes an image sensor; and a first sensor driving portion configured to move the image sensor in a first direction parallel to a surface of the image sensor, wherein the first sensor driving portion includes a first wire having a length that changes in a second direction in response to power being applied to the first wire, the second direction being perpendicular to the first direction and parallel to the surface of the image sensor, and the first sensor driving portion is further configured to move the image sensor in the first direction in response to the length of the first wire changing in the second direction in response to the power being applied to the first wire. 
     The first sensor driving portion may further include a first lever having a first end connected to one end of the first wire and configured to rotate and move the image sensor in the first direction in response to the length of the first wire changing in the second direction in response to the power being applied to the first wire. 
     The image sensor module may further include a frame in which the image sensor is disposed; a plate; and two first guide units disposed on opposite edges of the plate in the second direction, wherein the two first guide units may be configured to support the frame so that the frame is movable in the first direction, and the first lever may be rotatably mounted on the plate so that a second end of the first lever contacts the frame and pushes the frame and the image sensor in the first direction in response to the length of the first wire changing in the second direction in response to the power being applied to the first wire. 
     The image sensor module may further include a second sensor driving portion configured to move the image sensor in the second direction, wherein the second sensor driving portion may include a second wire having a length that changes in the first direction in response to power being applied to the second wire, and the second sensor driving portion may be further configured to move the image sensor in the second direction in response to the length of the second wire changing in the first direction in response to the power being applied to the second wire. 
     The first sensor driving portion may further include a first lever having a first end connected to one end of the first wire and configured to rotate and move the image sensor in the first direction in response to the length of the first wire changing in the second direction in response to the power being applied to the first wire, and the second sensor driving portion may further include a second lever having a first end connected to one end of the second wire and configured to rotate and move the image sensor in the second direction in response to the length of the second wire changing in the first direction in response to the power being applied to the second wire. 
     The image sensor module may further include a frame in which the image sensor is disposed; a moving plate; two first guide units disposed on opposite edges of the moving plate in the second direction; a base; and two second guide units disposed on opposite edges of the base in the first direction, wherein the two first guide units may be configured to support the frame so that the frame is movable in the first direction, the first lever may be rotatably mounted on the moving plate so that a second end of the first lever contacts the frame and pushes the frame and the image sensor in the first direction in response to the length of the first wire changing in the second direction in response to the power being applied to the first wire, the two second guide units may be configured to support the moving plate so that the moving plate is movable in the second direction, and the second lever may be rotatably mounted on the base so that a second end of the second lever contacts one of the two first guide units and pushes the movable plate, the frame, and the image sensor in the second direction in response to the length of the second wire changing in the first direction in response to the power being applied to the second wire. 
     Other features and aspects will be apparent from the following detailed description, the drawings, and the claims. 
    
    
     
       BRIEF DESCRIPTION OF DRAWINGS 
         FIG.  1    is a schematic perspective view of a camera module according to an example. 
         FIG.  2    is a partially exploded perspective view of a camera module according to an example. 
         FIG.  3    is an assembled perspective view of elements illustrated in  FIG.  2   . 
         FIG.  4    is a diagram illustrating an example in which a first wire pin and a second wire pin are coupled to a housing. 
         FIG.  5    is a side cross-sectional view of  FIG.  3   . 
         FIG.  6    is a plan view of  FIG.  2   . 
         FIG.  7    is a schematic perspective view of a camera module according to an example. 
         FIG.  8    is a side cross-sectional view of  FIG.  7   . 
         FIG.  9    is a plan view of  FIG.  7   . 
         FIG.  10    is a view illustrating a state in which a lens module is moved upwardly in an optical axis (Z-axis) direction in a camera module according to an example. 
         FIG.  11    is a view illustrating a state in which a lens module is moved downwardly in an optical axis (Z-axis) direction in a camera module according to an example. 
         FIG.  12    is an exploded perspective view of an image sensor module according to an example. 
         FIG.  13    is an exploded perspective view of a first sensor driving portion included in an image sensor module according to an example. 
         FIG.  14    is an exploded perspective view of a second sensor driving portion included in an image sensor module according to an example. 
         FIG.  15    is a perspective view of an image sensor module according to an example. 
         FIG.  16    is a cross-sectional view taken along the line XVI-XVI’ in  FIG.  15   . 
         FIG.  17    is a cross-sectional view taken along the line XVII-XVII’ in  FIG.  15   . 
         FIGS.  18 A and  18 B  are reference views illustrating driving of a driving unit included in an image sensor module according to an example. 
         FIGS.  19 A to  19 F  are reference views illustrating driving of an image sensor in an image sensor module according to an example. 
         FIG.  20    is a view illustrating a state in which an image sensor module is coupled to a camera module according to an example. 
     
    
    
     Throughout the drawings and the detailed description, the same reference numerals refer to the same elements. The drawings may not be to scale, and the relative sizes, proportions, and depictions of elements in the drawings may be exaggerated for clarity, illustration, and convenience. 
     DETAILED DESCRIPTION 
     The following detailed description is provided to assist the reader in gaining a comprehensive understanding of the methods, apparatuses, and/or systems described herein. However, various changes, modifications, and equivalents of the methods, apparatuses, and/or systems described herein will be apparent after an understanding of the disclosure of this application. For example, the sequences of operations described herein are merely examples, and are not limited to those set forth herein, but may be changed as will be apparent after an understanding of the disclosure of this application, with the exception of operations necessarily occurring in a certain order. Also, descriptions of features that are known in the art may be omitted for increased clarity and conciseness. 
     The features described herein may be embodied in different forms, and are not to be construed as being limited to the examples described herein. Rather, the examples described herein have been provided merely to illustrate some of the many possible ways of implementing the methods, apparatuses, and/or systems described herein that will be apparent after an understanding of the disclosure of this application. 
     Throughout the specification, when an element, such as a layer, region, or substrate, is described as being “on,” “connected to,” or “coupled to” another element, it may be directly “on,” “connected to,” or “coupled to” the other element, or there may be one or more other elements intervening therebetween. In contrast, when an element is described as being “directly on,” “directly connected to,” or “directly coupled to” another element, there can be no other elements intervening therebetween. 
     As used herein, the term “and/or” includes any one and any combination of any two or more of the associated listed items. 
     Although terms such as “first,” “second,” and “third” may be used herein to describe various members, components, regions, layers, or sections, these members, components, regions, layers, or sections are not to be limited by these terms. Rather, these terms are only used to distinguish one member, component, region, layer, or section from another member, component, region, layer, or section. Thus, a first member, component, region, layer, or section referred to in examples described herein may also be referred to as a second member, component, region, layer or section without departing from the teachings of the examples. 
     Spatially relative terms such as “above,” “upper,” “below,” and “lower” may be used herein for ease of description to describe one element’s relationship to another element as shown in the figures. Such spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the figures. For example, if the device in the figures is turned over, an element described as being “above” or “upper” relative to another element will then be “below” or “lower” relative to the other element. Thus, the term “above” encompasses both the above and below orientations depending on the spatial orientation of the device. The device may also be oriented in other ways (for example, rotated by 90 degrees or at other orientations), and the spatially relative terms used herein are to be interpreted accordingly. 
     The terminology used herein is for describing various examples only, and is not to be used to limit the disclosure. The articles “a,” “an,” and “the” are intended to include the plural forms as well, unless the context clearly indicates otherwise. The terms “comprises,” “includes,” and “has” specify the presence of stated features, numbers, operations, members, elements, and/or combinations thereof, but do not preclude the presence or addition of one or more other features, numbers, operations, members, elements, and/or combinations thereof. 
     A camera module according to an example may be mounted in a mobile electronic device. The mobile electronic device may be a portable electronic device such as a mobile communications terminal, a smartphone, or a table personal computer (PC). 
       FIG.  1    is a schematic perspective view of a camera module according to an example,  FIG.  2    is a partially exploded perspective view of a camera module according to an example,  FIG.  3    is an assembled perspective view of elements illustrated in  FIG.  2   ,  FIG.  4    is a diagram illustrating an example in which a first wire pin and a second wire pin are coupled to a housing,  FIG.  5    is a side cross-sectional view of  FIG.  3   , and  FIG.  6    is a plan view of  FIG.  2   . 
     Referring to  FIG.  1   , a camera module according to an example includes a lens module  2000 , a housing  1000 , and a driving portion  3000 . 
     The lens module  2000  may include a lens barrel  2100  in which at least one lens is disposed. At least one lens may be disposed inside the lens barrel  2100 . When a plurality of lenses are provided, the plurality of lenses are mounted in the lens barrel  2100  in an optical axis (a Z-axis) direction. 
     The lens module  2000  may further include a lens holder  2300  coupled to the lens barrel  2100 . 
     The lens holder  2300  may be include a hole penetrating through the lens holder  2300  in an optical axis (Z-axis) direction, and the lens barrel  2100  may be inserted into the hole of the lens holder  2300  to be fixedly disposed with respect to the lens holder  2300 . 
     The lens module  2000  may be disposed in an internal space of the housing  1000 , and may be moved in the optical axis (Z-axis) direction to perform an autofocusing (AF) function. 
     In an example, the lens module  2000  may be a movable member moved in the optical axis (Z-axis) direction during autofocusing (AF). To this end, the camera module according to an example may include the driving portion  3000 . 
     The lens module  2000  may be moved in the optical axis (Z-axis) direction by the driving portion  3000  to focus lenses in the lens module  2000  on a subject. 
     The driving portion  3000  may include a wire portion  3100  having a length that changes when power is applied to the wire portion  3100 . The wire portion  3100  may include a plurality of wires, and each of the plurality of wires may be a shape memory alloy wire. 
     For example, the wire portion  3100  may include a first wire  3110  moving the lens module  2000  upwardly in the optical axis (Z-axis) direction, and a second wire  3130  moving the lens module  2000  downwardly in the optical axis (Z-axis) direction. 
     The lens module  2000  may be relatively moved in the optical axis (Z-axis) direction with respect to the housing  1000  by a driving force generated depending on the change in the length of the first wire  3110  and the second wire  3130 . 
     A structure moving the lens module  2000  upwardly in the optical axis (Z-axis) direction will be described with reference to  FIGS.  2  to  6   . 
     The lens module  2000  may be moved relative to the housing  1000  by the driving portion  3000 . The lens module  2000  may include a guide portion  2500  guiding the movement of the lens module  2000  in the optical axis (Z-axis) direction. 
     The guide portion  2500  may be disposed on a side surface of the lens module  2000  to be in contact with and supported by an internal side surface of the housing  1000 . For example, the guide portion  2500  may be moved in the optical axis (Z-axis) direction while being supported by the housing  1000 . 
     For example, the lens module  2000  may be slidably moved with respect to the housing  1000  while at least a portion of the guide portion  2500  is in contact with the internal side surface of the housing  1000 . 
     The internal side surface of the housing  1000  may be provided with a guide groove  1100  accommodating at least a portion of the guide portion  2500  therein. The guide groove  1100  may extend to have a length in the optical axis (Z-axis) direction. 
     Accordingly, the lens module  2000  may be guided to move in a direction parallel to the optical axis (Z-axis) with respect to the housing  1000  by the guide portion  2500  and the guide groove  1100 . 
     The guide groove  1100  may be provided with a lubricant to reduce a frictional force generated by the movement of the guide portion  2500 . 
     A number of guide portions  2500  equal to a number of guide grooves  1100  may be provided. For example, four guide portions  2500  and four guide groove  1100  may be provided. 
     The guide portion  2500  may include a first guide portion  2510  and a second guide portion  2530  protruding from the side surface of the lens module  2000  toward the internal side surface of the housing  1000  in a direction perpendicular to the optical axis (Z-axis) direction. 
     As an example, the guide portion  2500  may include a first guide portion  2510  protruding in a second direction (a Y-axis direction) perpendicular to the optical axis (Z-axis) direction, and a second guide portion  2530  protruding in a first direction (an X-axis direction) perpendicular to both the optical axis (Z-axis) direction and the second direction (the Y-axis direction). 
     In an example, each of the first guide portion  2510  and the second guide portion  2530  may include a protrusion protruding from a side surface of the lens module  2000 , and a guide projection protruding from the protrusion. 
     A configuration of the protrusion may be added as necessary, and each of the guide portions  2510  and  2530  may include only a guide projection. 
     In an example, the guide projection may be configured so that a portion contacting the internal side surface of the housing  1000  has a rounded shape. For this reason, the guide projection may be in point contact with the internal side surface of the housing  1000 . Thus, a frictional force generated during movement may be reduced. 
     The first guide portion  2510  may include a first protrusion  2511  protruding from the side surface of the lens module  2000  in the second direction (the Y-axis direction), and a first guide projection  2513  protruding from the first protrusion  2511 . 
     The second guide portion  2530  may include a second protrusion  2531  protruding from the side surface of the lens module  2000  in the first direction (the X-axis direction), and a second guide projection  2533  protruding from the second protrusion  2531 . 
     The driving portion  3000  may include a first wire  3110  and a first wire pin  3300 . A length of the first wire  3110  may change as power is applied to the first wire  3110 . For example, the first wire  3110  may be a shape memory alloy wire. 
     The first wire  3110  may include a pair of wires spaced apart from each other in the second direction (the Y-axis direction). 
     The lens module  2000  may be moved upwardly in the optical axis (Z-axis) direction by a driving force generated according to the change in the length of the first wire  3110 . 
     The change in the length of the first wire  3110  may be proportional to the magnitude of a voltage or current applied to the first wire  3110 , or may be proportional to a time for which power is applied. 
     The first wire  3110  may be disposed to be in contact with and supported by the guide portion  2500  of the lens module  2000 . For example, the first wire  3110  may be in contact with and supported by the first guide portion  2510  or the second guide portion  2530  of the lens module  2000 . 
     The following description will be provided with respect to an example in which the first wire  3110  is in contact with and supported by the first guide portion  2510  of the lens module  2000 . 
     The first wire  3110  may be disposed to be bent with respect to the first guide portion  2510 . 
     When the first wire  3110  is disposed to span the first guide portion  2510 , the first guide portion  2510  may be pushed upwardly in the optical axis (Z-axis) direction as the length of the first wire  3110  changes. 
     The guide portion  2510  may be provided with a first accommodation groove  2515  in which the first wire  3110  is accommodated. 
     Opposite ends of the first wire  3110  may be fixed to the first wire pin  3300 . The first wire pin  3300  may be coupled to the housing  1000 , and may be made of a conductive material. Power may be applied to the first wire  3110  by the first wire pin  3300 . 
     A fixing projection  1300  supporting the first wire  3110  may be disposed in the housing  1000 . The fixing projection  1300  may be provided with a first groove  1310  in which the first wire  3110  is accommodated. The first groove  1310  may extend along a periphery of the fixing projection  1300 . 
     A portion of the first wire  3110  may be bent to be fitted into the first groove  1310  of the fixing projection  1300 . 
       FIG.  7    is a schematic perspective view of a camera module according to an example,  FIG.  8    is a side cross-sectional view of  FIG.  7   , and  FIG.  9    is a plan view of  FIG.  7   . 
     A structure moving the lens module  2000  downwardly in the optical axis (Z-axis) direction will be described with reference to  FIGS.  7  to  9   . 
     The driving portion  3000  may include a second wire  3130  and a second wire pin  3500 . A length of the second wire  3130  may change as power is applied to the second wire  3130 . For example, the second wire  3130  may be a shape memory alloy wire. 
     The second wire  3130  may include a pair of wires spaced apart from each other in the second direction (the Y-axis direction). 
     The lens module  2000  may be moved downwardly in the optical axis (Z-axis) direction by a driving force generated depending on the change in the length of the second wire  3130 . 
     The change in the length of the second wire  3130  may be proportional to the magnitude of a voltage or current applied to the second wire  3130 , or may be proportional to a time for which power is applied. 
     The second wire  3130  may be disposed to be in contact with and supported by the guide portion  2500  of the lens module  2000 . For example, the second wire  3130  may be in contact with and supported by the first guide portion  2510  or the second guide portion  2530  of the lens module  2000 . 
     The following description will be provided with respect to an example in which the second wire  3130  is in contact with and supported by the first guide portion  2510  of the lens module  2000 . 
     The second wire  3130  may be disposed to be bent with respect to the first guide portion  2510 . 
     When the second wire  3130  is disposed to span the first guide portion  2510 , the first guide portion  2510  may be moved downwardly in the optical axis (Z-axis) direction as the length of the second wire  3130  changes. 
     The first wire  3110  and the second wire  3130  may be bent in opposite directions with respect to the first guide portion  2510 . Accordingly, the driving force generated by the first wire  3110  and the driving force generated by the second wire  3130  may be applied in opposite directions. 
     The first guide portion  2510  may be provided with a second accommodation groove  2517  in which the second wire  3130  is accommodated. 
     The first accommodation groove  2515  in which the first wire  3110  is accommodated and the second accommodation groove  2517  in which the second wire  3130  is accommodated may be different in terms of locations in the optical axis (Z-axis) direction and the second direction (the Y-axis direction). 
     The first wire  3110  and the second wire  3130  may be spaced apart from each other in the second direction (the Y-axis direction). 
     Opposite ends of the second wire  3130  may be fixed to the second wire pin  3500 . The second wire pin  3500  may be coupled to the housing  1000 , and may be made of a conductive material. Power may be applied to the second wire  3130  by the second wire pin  3500 . 
     The fixing projection  1300  supporting the second wire  3130  may be disposed in the housing  1000 . The fixing projection  1300  may be provided with a second groove  1330  in which the second wire  3130  is accommodated. The second groove  1330  may extend along a periphery of the fixing projection  1300 . 
     The first groove  1310  in which the first wire  3110  is accommodated and the second groove  1330  in which the second wire  3130  is accommodated may be disposed to be spaced apart from each other in the second direction (the Y-axis direction). 
     A portion of the second wire  3130  may be bent to be fitted into the second groove  1330  of the fixing projection  1300 . 
       FIG.  10    is a view illustrating a state in which a lens module is moved upwardly in an optical axis (Z-axis) direction in a camera module according to an example, and  FIG.  11    is a view illustrating a state in which a lens module is moved downwardly in an optical axis (Z-axis) direction in a camera module according to an example. 
     Referring to  FIG.  10   , as power is applied to the first wire  3110 , the length of the first wire  3110  may change to move the lens module  2000  upwardly in the optical axis (Z-axis) direction. 
     Referring to  FIG.  11   , as power is applied to the second wire  3130 , the length of the second wire  3130  may change to move the lens module  2000  downwardly in the optical axis (Z-axis) direction. 
       FIG.  12    is an exploded perspective view of an image sensor module according to an example. 
     The camera module according to an example may further include an image sensor module 10. The image sensor module  10  may be coupled to the housing  1000 . 
     The image sensor module  10  may move the image sensor  100  in a direction perpendicular to an optical axis (Z-axis) direction to correct shake at the time of capturing an image. 
     For example, referring to  FIG.  12   , the image sensor module  10  may move the image sensor  100  on a plane perpendicular to an optical axis (a Z-axis) in response to the shaking of the camera module to perform an optical image stabilization (OIS) function. 
     The image sensor module  10  may include an image sensor  100 , a frame  110  on which the image sensor  100  is mounted, a first sensor driving portion  200  movably supporting the frame  110 , a second sensor driving portion  300  movably supporting the first sensor driving portion  200 , and a circuit board  400  electrically connected to the image sensor  100 . 
     At least a portion of the circuit board  400  may be configured to be flexible. 
     The image sensor  100 , the first sensor driving portion  200 , the second sensor driving portion  300 , and the circuit board  400  may be disposed in an optical axis (Z-axis) direction of a lens module  2000 . 
     For example, as illustrated in  FIG.  12   , the image sensor  100  may be provided on the first sensor driving portion  200 , the first sensor driving portion  200  may be provided on the second sensor driving portion  300 , and the second sensor driving portion  300  may be provided on the circuit board  400 . 
     The image sensor  100 , the first sensor driving portion  200 , the second sensor driving portion  300 , and the circuit board  400  may be sequentially stacked and disposed in the optical axis (Z-axis) direction. 
     The image sensor  100  may be coupled to the frame  110  to be movable with respect to the first sensor driving portion  200 . For example, as illustrated in  FIG.  12   , the frame  110  coupled to the image sensor  100  may be provided to be movable in a direction (for example, an X-axis direction and/or a Y-axis direction) perpendicular to the optical axis (Z-axis) direction on an upper surface of the first sensor driving portion  200 . 
     The first sensor driving portion  200  may move the frame  110  to which the image sensor  100  is coupled in a first direction (for example, the X-axis direction) perpendicular to the optical axis (the Z-axis). 
     The first sensor driving portion  200  may include a moving plate  210  movably supporting the image sensor  100 , and one or more driving units  220  and  230  moving the image sensor  100 . 
     The second sensor driving portion  300  may move the first sensor driving portion  200  in a direction different from the first direction (the X-axis direction). For example, the second sensor driving portion  300  may move the first sensor driving portion  200  in a second direction (for example, the Y-axis direction) perpendicular to both the optical axis (Z-axis) direction and the first direction (the X-axis direction). 
     The second sensor driving portion  300  may include a base  310  movably supporting the moving plate  210  of the first sensor driving portion  200 , and one or more driving units  320  and  330  moving the moving plate  210 . 
     In examples, the second sensor driving portion  300  may move the first sensor driving portion  200  and the image sensor  100  together. For example, when the first sensor driving portion  200  is moved in the second direction (the Y-axis direction) by the second sensor driving portion  300 , the image sensor  100  supported by the first sensor driving portion  200  may also be moved together with the first sensor driving portion  200  in the same direction as the first sensor driving portion  200 . 
     The image sensor module  10  according to examples may move the image sensor  100  in the first direction (the X-axis direction) and/or the second direction (the Y-axis direction) to perform an optical image stabilization (OIS) function. 
     The circuit board  400  may be provided below the second sensor driving portion  300 . The circuit board  400  may be electrically connected to the image sensor  100  to receive image information from the image sensor  100 . 
     The circuit board  400  may be electrically connected to one or more driving units  220 ,  230 ,  320 , and  330  included in the first sensor driving portion  200  and the second sensor driving portion  300  to apply power to the driving units  220 ,  230 ,  320 , and  330  and to transmit a control signal. 
     Hereinafter, the first sensor driving portion  200  according to examples will be described with reference to  FIG.  13   . 
       FIG.  13    is an exploded perspective view of a first sensor driving portion included in an image sensor module according to an example. 
     The first sensor driving portion  200  may move the image sensor  100  and the frame  110  on which the image sensor  100  is mounted in a first direction (for example, an X-axis direction) perpendicular to an optical axis (Z-axis) direction. 
     The first sensor driving portion  200  may include a moving plate  210  on which the frame  110  is disposed, and one or more driving units  220  and  230  provided on the moving plate  210  and moving the frame  110 . 
     One of the driving units  220  and  230  may include wires  221  and  231  having lengths that change when power is applied to the wires  221  and  231 , and may move the image sensor  100  with a driving force generated depending on the change in the lengths of the wires  221  and  231 . 
     The image sensor  100  or the frame  110  on which the image sensor  100  is mounted may be movably disposed on the moving plate  210 . 
     For example, as illustrated in  FIG.  13   , the moving plate  210  may include a first guide unit  240  provided on the moving plate  210  and extending in the first direction (the X-axis direction). The first guide unit  240  may include a groove in which at least a portion of the frame  110  may be accommodated. At least a portion of the frame  110  may be inserted into the first guide unit  240  to be slidably moved in the direction (for example, the X-axis direction) in which the first guide unit  240  extends. 
     The first guide unit  240  may be provided as one or more first guide units  240 . For example, two first guide units  240  may be provided on opposite edges of the moving plate  210  and may extend in the first direction (the X-axis direction). 
     The moving plate  210  may be provided as a plate-shaped member having at least a partial surface perpendicular to an optical axis (a Z-axis). Accordingly, the frame  110  may move along the moving plate  210  in a direction (for example, the X-axis direction) perpendicular to the optical axis (Z-axis). However, the shape of the moving plate  210  is not limited to a plate shape, and may have any of various shapes. 
     The moving plate  210  may have a first opening  250  in a portion facing the image sensor  100 . The image sensor  100  disposed on an upper surface of the moving plate  210  may be exposed to the circuit board  400  below the moving plate  210  through the first opening  250 . 
     The circuit board  400  may be disposed below the first sensor driving portion  200 , and may be electrically connected to the image sensor  100  through the first opening  250  of the first sensor driving portion  200 . 
     The first sensor driving portion  200  may include one or more driving units  220  and  230 . For example, as illustrated in  FIG.  13   , the first sensor driving portion  200  may include a first driving unit  220  and a second driving unit  230  provided on opposite sides of the frame  110 . 
     The first driving unit  220  and the second driving unit  230  may be spaced apart from each other in the first direction (the X-axis direction). 
     The first driving unit  220  and the second driving unit  230  of the first sensor driving portion  200  may be provided at positions that are different from positions of the first guide units  240  of the first sensor driving portion  200 . 
     For example, the first driving unit  220  and the second driving unit  230  may be provided on opposite edges of the moving plate  210  on which the first guide units  240  are not provided. 
     For example, as illustrated in  FIG.  13   , when the moving plate  210  has a rectangular upper surface, the first guide units  240  may be provided on two opposite edges of the moving plate  210  spaced apart from each other in the second direction (the Y-axis direction), and the first driving unit  220  and the second driving unit  230  may be provided on two opposite edges of the moving plate  210  spaced apart from each other in the first direction (the X-axis direction). 
     One of the driving units  220  and  230  may move or rotate the image sensor  100  with respect to the moving plate  210 . For example, the first driving unit  220  may move the frame  110  on which the image sensor  100  is mounted with respect to the moving plate  210  in the first direction (the X-axis direction). 
     The first driving unit  220  may include a third wire  221  having a length that changes when power is applied to the third wire  221 , a first lever  222  connected to the third wire  221  and rotating about a predetermined rotation axis depending on the change in the length of the third wire  222 , and a first lever shaft  223  forming a rotation axis of the first lever  222 . 
     The third wire  221  may receive power from an external power source (not illustrated) outside the first sensor driving portion  200 , and may have a length that changes when power is applied to the third wire  221 . 
     For example, the third wire  221  may be a shape memory alloy wire having a length that changes when power is applied to the third wire  221 . A change in the length of the third wire  221  may be proportional to the magnitude of a voltage or current applied to the third wire  221  or proportional to a time for which the voltage or current is applied. 
     At least a portion of the third wire  221  may be formed to extend in a direction (for example, a Y-axis direction) perpendicular to the optical axis (Z-axis). The third wire  221  may be contracted in a direction (for example, the Y-axis direction) perpendicular to the optical axis (the Z-axis) when power is applied to the third wire  221 . 
     One end of the third wire  221  may be fixed to the moving plate  210  by a first fixed member  224 . The first fixed member  224  may be made of a conductive material, and thus one end of the third wire  221  may be electrically connected to the external power source (not illustrated) via the first fixed member  224 . 
     The other end of the third wire  221  may be connected to the first lever  222 . In examples, a first connection member  225  may be further provided to connect the other end of the third wire  221  to the first lever  222 . The first connection member  225  may be made of a conductive material, and thus the other end of the third wire  221  may be electrically connected to the external power source (not illustrated) via the first connection member  225 . 
     For example, one end and the other end of the third wire  221  may be electrically connected to the external power source (not illustrated) to receive power. When power is applied to the third wire  221  and the length of the third wire  221  is contracted, a tension of the third wire  221  is transmitted to the first lever  222  connected to the third wire  221 . 
     The first lever  222  may be rotatably supported on the moving plate  210  by the first lever shaft  223 . 
     The first lever  222  may be provided as a rigid rod-shaped member. For example, as illustrated in  FIG.  13   , the first lever  222  may be provided as a rigid member continuously extending from a connection portion  222   a  connected to the third wire  221  to a contact portion  222   b  in contact with the frame  110 . However, the shape of the first lever  222  illustrated in  FIG.  13    is only an example, and the first lever  222  may be have any of various shapes. 
     The first lever  222  may rotate about a rotation axis formed by the first lever shaft  223 . For example, as illustrated in  FIG.  13   , the first lever shaft  223  may penetrate through the first lever  222  to be coupled to the moving plate  210 . Accordingly, the first lever  222  may rotate clockwise or counterclockwise around the lever shaft  223 . 
     As illustrated in  FIG.  13   , the first lever shaft  223  may be an additional member inserted into the first lever  222 . However, this is only an example, and the first lever shaft  223  may be integrated with the first lever  222 . For example, the first lever shaft  223  may be integrated with the first lever  222 , and may be rotatably supported by the moving plate  210 . 
     The first lever  222  may include the connection portion  222   a  connected to the third wire  221 . The connection portion  222   a  of the first lever  222  may be connected to the third wire  221  through the first connection member  225 . The first connection member  225  may have a shape of a clip or a clamp fitted to the connection portion  222   a  of the first lever  222  in a state in which the connection portion  222   a  of the first lever  222  and the third wire  221  are in contact with each other. 
     The contact portion  222   b  of the first lever  222  may be provided to contact the frame  110 . According to a change in the length of the third wire  221 , the contact portion  222   b  of the first lever  222  may be rotated to push and move the frame  110 . 
     For example, when the third wire  221  is contracted to rotate the connection portion  222   a  of the first lever  222 , the contact portion  222   b  of the first lever  222  may also be rotated to push and move the frame  110 . 
     In examples, a portion of the first lever  222  contacting the frame  110  may have a curved surface. For example, as illustrated in  FIG.  13   , a contact portion  222   b  at which the first lever  222  contacts the frame  110  may have a curved surface. Accordingly, the curved surface of the contact portion  222   b  may smoothly press the frame  110  while the first lever  222  rotates, and a moving distance of the frame  110  may be constantly changed depending on the amount of rotation of the first lever  222 . 
     A portion of the third wire  221  may be wound around a first roller  226  to be connected to the first lever  222 . For example, as illustrated in  FIG.  13   , at least a portion of the third wire  221  between one end connected to the first fixed member  224  and the other end connected to the first connection member  225  may be wound around the first roller  226  to extend in a different direction. Accordingly, the first roller  226  may be provided to change a direction in which the third wire  221  extends. 
     The first roller  226  may be rotatably provided on the moving plate  210 , and may be provided so that a portion of the third wire  221  is wound around the first roller  226  to be rotatable in response to a change in the length of the third wire  221 . 
     A rotation axis of the first roller  226  may be formed by a first roller shaft  227 . The first roller shaft  227  may penetrate through the first roller  226  to be coupled to the moving plate  210 . However, the first roller shaft  227  may be integrated with the first roller  226 . 
     In examples, the first roller  226  may be provided to be adjacent to the connection portion  222   a  of the first lever  222 . Accordingly, a portion of the third wire  221  extending from the first roller  226  to the connection portion  222   a  of the first lever  222  may be provided to be substantially perpendicular to the first lever  222 . The third wire  221  is connected to the first lever  222  in a vertical state, so that the tension generated according to contraction of the length of the third wire  221  may generate a high torque in the first lever  222 . 
     The first sensor driving portion  200  may further include a second driving unit  230  separate from the first driving unit  220 . The second driving unit  230  may move the frame  110  in a first direction (an X-axis direction) perpendicular to an optical axis (a Z-axis). 
     In examples, the second driving unit  230  may have the same structure as the first driving unit  220 . For example, the second driving unit  230  may include a fourth wire  231  having a length that changes when power is applied to the fourth wire  231 , a second lever  232  connected to a fourth wire  231  and provided to be rotatable, and a second lever shaft  233  forming a rotation axis of the second lever  232 . 
     In addition, the second driving unit  230  may include a second fixed member  234  that may fix the fourth wire  231  to the moving plate  210 , and a second connection member  235  that may connect the second lever  232  and the fourth wire  231  to each other. 
     In addition, the second driving unit  230  may further include a second roller  236  around which a portion of the fourth wire  231  is wound, and a second roller shaft  237  forming a rotation axis of the second roller  236 . 
     The fourth wire  231 , the second lever  232 , the second lever shaft  233 , the second fixed member  234 , the second connection member  235 , the second roller  236 , and the second roller shaft  237  may have the same structures as the third wire  221 , the first lever  222 , the first lever shaft  223 , the first fixed member  224 , and the first connection member  225 , the first roller  226 , and the first roller shaft  227 , respectively, of the first driving unit  220  described above. Therefore, descriptions of the above-mentioned elements of the second driving unit  230  that are the same as or similar to those of the first driving unit  220  will be omitted herein, and only differences of the second driving unit  230  from the first driving unit  220  will be described below. 
     As illustrated in  FIG.  13   , the fourth wire  231  of the second driving unit  230  and the third wire  221  of the first driving unit  220  may be provided on opposite edges of the moving plate  210  and may extend parallel to each other. 
     A direction in which the third wire  221  extends from the first roller  226  toward the first fixed member  224  may be opposite to a direction in which the fourth wire  231  extends from the second roller  236  toward the second fixed member  234 . 
     Since the first driving unit  220  and the second driving unit  230  are disposed to be spaced apart from each other in the first direction (the X-axis direction), a direction in which the frame  110  is driven by the first driving unit  220  and a direction in which the frame  110  is driven by the second driving unit  230  may be opposite to each other. 
     For example, the first driving unit  220  may move the frame  110  in a positive direction of the first direction (the X-axis direction), and the second driving unit  230  may move the frame  110  in a negative direction of the first direction (the X-axis direction). 
     For example, the frame  110  may be moved in both the positive and negative directions of the first direction (the X-axis direction) by the first driving unit  220  and the second driving unit  230 . 
     Rotation directions of the first lever  222  and the second lever  232  according to the contraction of the third wire  221  and the fourth wire  231  may be the same. 
     For example, as the third wire  221  contracts, the first lever  222  may rotate clockwise to move the frame  110  in the positive direction of the first direction (the X-axis direction). 
     As the fourth wire  231  contracts, the second lever  232  may rotate clockwise to move the frame  110  in the negative direction of the first direction (the X-axis direction). 
     The first driving unit  220  and the second driving unit  230  may be controlled independently of each other. For example, only one of the first driving unit  220  and the second driving unit  230  may be driven, or the first driving unit  220  and the second driving unit  230  may be sequentially driven. Accordingly, the first sensor driving unit  200  may appropriately move the image sensor  100  in a direction (for example, the X-axis direction) perpendicular to the optical axis (the Z-axis) to perform an optical image stabilization (OIS) function. 
     In examples, the image sensor module  10  may further include a second sensor driving portion  300  which may move the image sensor  100  in a direction (for example, the Y-axis direction) different from the direction (for example, the X-axis direction) in which the first sensor driving portion  200  moves the image sensor  100 . 
     Hereinafter, the second sensor driving portion  300  will be described with reference to  FIG.  14   . 
       FIG.  14    is an exploded perspective view of a second sensor driving portion included in an image sensor module according to an example. 
     The second sensor driving portion  300  may move the first sensor driving portion  200  in a direction (for example, the Y-axis direction) perpendicular to the optical axis (the Z-axis). For example, the second sensor driving portion  300  may move the first sensor driving portion  200  in the second direction (the Y-axis direction) perpendicular to both the optical axis (Z-axis) direction and the first direction (the X-axis direction). 
     As the first sensor driving portion  200  is moved in the second direction (the Y-axis direction) by the second sensor driving portion  300 , the image sensor  100  disposed on the first sensor driving portion  200  may also be moved together with the first sensor driving portion  200  in the second direction (the Y-axis direction). 
     For example, the second sensor driving portion  300  may move the first sensor driving portion  200  and the image sensor  100  together in the second direction (the Y-axis direction). 
     The second sensor driving portion  300  may include a base  310  on which the moving plate  210  of the first sensor driving portion  200  is disposed, and one or more driving units  320  and  330  provided on the base  310  and moving the moving plate  210 . 
     The one or more driving units  320  and  330  may include wires  321  and  331  having lengths that change when power is applied to the wires  321  and  331 , and may move the moving plate  210  with a driving force generated depending on the change in the length of the wires  321  and  331 . 
     As illustrated in  FIG.  14   , the base  310  may include a second guide unit  340  extending in the second direction (the Y-axis direction). The second guide unit  340  may include a groove in which at least a portion of the moving plate  210  may be accommodated. 
     At least a portion of the moving plate  210  may be inserted into the second guide unit  340  to slidably move relative to an upper surface of the base  310  in a direction in which the second guide unit  340  extends. The second guide unit  340  may be provided as one or more second guide units  340 . For example, two second guide units  340  may be provided on opposite edges of the base  310  and may extend in the second direction (the Y-axis direction). 
     In examples, a direction in which the second guide units  340  extend and a direction in which the first guide units  240  extend may be perpendicular to each other. For example, the first guide units  240  may extend in the first direction (the X-axis direction), and the second guide units  340  may extend in the second direction (the Y-axis direction). 
     Since the first guide units  240  and the second guide units  340  extend in directions perpendicular to each other, the frame  110  and the moving plate  210  may move along the first guide units  240  and the second guide units  340  in directions perpendicular to each other. 
     The base  310  may be provided as a plate-shaped member having at least a partial surface perpendicular to the optical axis (the Z-axis). Accordingly, the moving plate  210  may move along the base  310  in a direction perpendicular to the optical axis (the Z-axis). However, the shape of the base  310  is not limited to a plate shape, and the base  310  may have any of various shapes. 
     The base  310  may include a second opening  350  in a portion facing the image sensor  100 . The second opening  350  of the base  310  and the first opening  250  of the moving plate  210  shown in  FIG.  13    may be provided to communicate with each other. Accordingly, the circuit board  400  may be electrically connected to the image sensor  100  through the first opening  250  and the second opening  350 . 
     The second sensor driving portion  300  may include one or more driving units  320  and  330 . For example, as illustrated in  FIG.  14   , the second sensor driving portion  300  may include a third driving unit  320  and a fourth driving unit  330  provided on opposite sides of the base  310 . 
     The one or more driving units  320  and  330  included in the second sensor driving portion  300  may move or rotate the first sensor driving portion  200  with respect to the base  310 . 
     For example, the third driving unit  320  may move the first sensor driving portion  200  and the image sensor  100  together in the second direction (the Y-axis direction) with respect to the base  310 . For example, the first sensor driving portion  200  and the image sensor  100  disposed in the first sensor driving portion  200  may be moved together in the second direction (the Y-axis direction) by a driving force generated by the third driving unit  320 . 
     The one or more driving units  320  and  330  included in the second sensor driving portion  300  may have the same structure as the first driving unit  220  described with reference to  FIG.  13   . For example, the third driving unit  320  and the fourth driving unit  330  of the second sensor driving portion  300  may have the same structure as the first driving unit  220 . 
     For example, the third driving unit  320  may include a fifth wire  321  having a length that changes when power is applied to the fifth wire  321 , a third lever  322  connected to the fifth wire  321  and rotating about a predetermined rotation axis depending on the change in the length of the fifth wire  321 , and a third lever shaft  323  forming a rotation axis of the third lever  322 . 
     The third lever  322  of the third driving unit  320  may include a connection portion  322   a  and a contact portion  322   b , and a third connection member  325  may be coupled to the connection portion  322   a  of the third lever  322 . The fifth wire  321  may be fixed to the base  310  by a third fixed member  324 . 
     The third driving unit  320  may further include a third roller  326  around which a portion of the fifth wire  321  is wound, and a third roller shaft  327  forming a rotation shaft of the third roller  326 . 
     Similarly, the fourth driving unit  330  may include a sixth wire  331  having a length that changes when power is applied to the sixth wire  331 , a fourth lever  332  connected to the sixth wire  331  and rotating about a predetermined rotation axis depending on the change in the length of the sixth wire  331 , and a fourth lever shaft  333  forming a rotation axis of the fourth lever  332 . 
     A fourth connection member  335  may be provided to connect the sixth wire  331  and the fourth lever  332  of the fourth driving unit  330  to each other. The sixth wire  331  may be fixed to the base  310  by a fourth fixed member  334 . The fourth driving unit  330  may further include a fourth roller  336  around which a portion of the sixth wire  331  is wound, and a fourth roller shaft  337  forming a rotation axis of the fourth roller  336 . 
     Hereinafter, descriptions of the above-mentioned elements of the third and fourth driving units  320  and  330  that are the same as or similar to those of the first driving unit  220  will be omitted, and only differences of third and fourth driving units  320  and  330  from the first driving unit  220  will be described below. 
     At least one of the driving units  320  and  330  included in the second sensor driving portion  300  according to examples may be provided on the base  310 . For example, as illustrated in  FIG.  14   , the third driving unit  320  and the fourth driving unit  330  may be disposed on opposite edges of the base  310 . 
     In examples, the driving units  320  and  330  of the second sensor driving portion  300  may be provided at positions that different from the positions of the second guide units  340  of the second sensor driving portion  300 . 
     For example, the third driving unit  320  and the fourth driving unit  330  may be provided on opposite edges of the base  310  on which the second guide units  340  are not provided. 
     As illustrated in  FIG.  14   , when the base  310  has a rectangular upper surface, the second guide units  340  may be provided on two opposite edges of the base  310  spaced apart from each other in the first direction (the X-axis direction), and the third driving unit  320  and the fourth driving unit  330  may be provided on two opposite edges of the base  310  spaced apart from each other in the second direction (the Y-axis direction). 
     The third driving unit  320  and the fourth driving unit  330  of the second sensor driving portion  300  may be provided to be adjacent to the first guide units  240  of the first sensor driving portion  200 . Accordingly, the third driving unit  320  and the fourth driving unit  330  of the second sensor driving portion  300  may push the first guide units  240  of the first sensor driving portion  200  to move the first sensor driving portion  200 . 
     The fifth wire  321  of the third driving unit  320  and the sixth wire  331  of the fourth driving unit  330  may be provided on opposite edges of the base  310  and may extend parallel to each other. 
     A direction in which the fifth wire  321  extends from the third roller  326  toward the third fixed member  326  may be opposite to a direction in which the sixth wire  331  extends from the fourth roller  336  toward the fourth fixed member  334 . 
     Since the third driving unit  320  and the fourth driving unit  330  are disposed to be spaced apart from each other in the second direction (the Y-axis direction), a direction in which the first sensor driving portion  200  is driven by the third driving unit  320  and a direction in which the first sensor driving portion  200  is driven by the fourth driving unit  330  may be opposite to each other. 
     For example, the third driving unit  320  may push and move the first sensor driving portion  200  in a positive direction of the second direction (the Y-axis direction), and the fourth driving unit  330  may push and move the first sensor driving portion  200  in a negative direction of the second direction (the Y-axis direction). 
     For example, the first sensor driving portion  200  may be moved in both the positive and negative directions of the second direction (the Y-axis direction) by the third driving unit  320  and the fourth driving unit  330 . 
     The third driving unit  320  and the fourth driving unit  330  of the second sensor driving portion  300  may be provided on opposite sides of the image sensor  100  in the second direction (the Y-axis direction), and the first driving unit  220  and the second driving unit  230  of the first sensor driving portion  200  may be provided on opposite sides of the image sensor  100  in the first direction (the X-axis direction) intersecting the section direction (the Y-axis direction). For example, when the image sensor module  10  is viewed from above, the first driving unit  220 , the second driving unit  230 , the third driving unit  320 , and the fourth driving unit  330  may be provided to be adjacent to four side surfaces of the image sensor  100 . 
     Hereinafter, a structure of the image sensor module  10  including the first to fourth driving units  220 ,  230 ,  320 , and  330  according to examples will be described with reference to  FIGS.  15  to  17   . 
       FIG.  15    is a perspective view of an image sensor module according to an example,  FIG.  16    is a cross-sectional view taken along the line XVI-XVI’ in  FIG.  15   , and  FIG.  17    is a cross-sectional view taken along the line XVII-XVII’ in  FIG.  15   . 
     The image sensor module  10  may include an image sensor  100  converting light incident in an optical axis (Z-axis) direction into an electrical signal, and one or more driving units  220 ,  230 ,  320 , and  330  moving the image sensor  100 . 
     The image sensor  100  may be disposed in the frame  110  having an opening. The frame  110  may be formed of a plate-shaped member having an opening, and light may be incident on the image sensor  100  through the opening. However, the shape of the frame  110  is not limited to a plate shape, and the frame  110  may have any of various shapes. Alternatively, the frame  110  may be integrated with the image sensor  100 . 
     The frame  110  may be movably disposed on the moving plate  210  of the first sensor driving portion  200 . 
     The moving plate  210  may be movably disposed on the base  310  of the second sensor driving portion  300 . 
     The frame  110 , the moving plate  210 , and the base  310  may be stacked in the optical axis (Z-axis) direction. In addition, a circuit board  400  electrically connected to the image sensor  100  may be disposed below the base  310 . 
     A direction in which the frame  110  moves with respect to the moving plate  210  and a direction in which the moving plate  210  moves with respect to the base  310  may intersect each other. For example, as illustrated in  FIG.  15   , the frame  110  may be provided to be movable with respect to the moving plate  210  in the first direction (the X-axis direction), and the moving plate  210  may be provided to be movable with respect to the base  310  in the second direction (the Y-axis direction). 
     Accordingly, the image sensor  100  coupled to the frame  110  may be provided to be movable in both the first direction (the X-axis direction) and the second direction (the Y-axis direction). 
     The image sensor module  10  may include one or more driving units  220 ,  230 ,  320 , and  330  which may move the image sensor  100  in the direction of a plane (an X-Y plane) perpendicular to the optical axis (the Z-axis). 
     The plurality of driving units  220 ,  230 ,  320 , and  330  included in the image sensor module  10  may be provided on different layers of the image sensor module 10. 
     For example, as illustrated in  FIG.  15   , the first and second driving units  220  and  230  may be provided on the moving plate  210 , and the third and fourth driving units  320  and  330  may be provided on the base  310  disposed below the moving plate  210 . 
     The plurality of wires included in the plurality of driving units  220 ,  230 ,  320 , and  330  may move the image sensor  100  in a direction different from a length direction of the wires. 
     For example, a portion of the third wire  221  of the first driving unit  220  may be formed to extend in the second direction (the Y-axis direction), and as a length of the third wire  331  changes, the image sensor  100  is moved in the first direction (the X-axis direction) perpendicular to the second direction (the Y-axis direction). 
     In addition, a portion of the sixth wire  331  of the fourth driving unit  330  may be formed to extend in the first direction (the X-axis direction), and as a length of the sixth wire  331  changes, the image sensor  100  may be moved in the second direction (the Y-axis direction) perpendicular to the first direction (the X-axis direction). 
     The plurality of driving units  220 ,  230 ,  320 , and  330  may be electrically connected to the circuit board  400  to be connected to an external power source (not illustrated). For example, as illustrated in  FIG.  15   , one end and the other end of the third wire  221  included in the first driving unit  220  may be connected to wires  228  and  229  to be electrically connected to the circuit board  400  to be connected to the external power source (not illustrated). 
     When the first fixed member  224  and the first connection member  225  are made of a conductive material, the wires  228  and  229  may be connected to the first fixed member  224  and the first connection member  225 , respectively, to be electrically connected to the third wire  221 . Accordingly, a closed circuit passing through the third wire  221  from the external power source (not illustrated) may be formed to allow a voltage or current to flow to the third wire  221 . However, a connection structure between the third wire  221  and the external power source (not illustrated) is not limited to the above description. For example, at least one of the wires  228  and  229  respectively connected to one end and the other end of the third wire  221  may be omitted. 
     As illustrated in  FIG.  15   , one end of the sixth wire  331  may be connected to the fourth fixed member  334 , and the fourth fixed member  334  may be directly electrically connected to the circuit board  400 . Accordingly, the one end of the sixth wire  331  may be electrically connected to the circuit board  400  without an electric wire. The other end of the sixth wire  331  may be connected to the circuit board  400  through an electric wire  338 . 
     The frame  110  may be disposed on the moving plate  210  to move in a direction (for example, the X-axis direction) perpendicular to the optical axis (the Z-axis). The moving plate  210  may be provided with first guide units  240  guiding the movement of the frame  110 . 
     Referring to  FIG.  16   , the first guide units  240  may include a first extension portion  241  extending from the moving plate  210  in the optical axis (Z-axis) direction, and a first bent portion  242  bent from the first extension portion  241  in a direction (for example, the Y-axis direction) intersecting the optical axis (the Z-axis). 
     The first extension portion  241  may be formed to be substantially vertical, and the first bent portion  242  and the moving plate  210  may be formed to be substantially horizontal. For example, the first guide units  240  may have an inverted L-shaped cross section and may be formed to extend along the moving plate  210  in the first direction (the X-axis direction) perpendicular to the optical axis (the Z-axis). 
     At least a portion of the frame  110  may be inserted between the first bent portion  242  and the moving plate  210  to slidably move in the first direction (the X-axis direction) in which the first guide units  240  extend. 
     Alternatively, the first guide units  240  may be provided with a first guide groove surrounded by the moving plate  210 , the first extension portion  241 , and the first bent portion  242 , and at least a portion of the frame  110  may be inserted into the first guide groove to slidably move in the first direction (the X-axis direction). 
     The first guide units  240  may be provided on opposite edges of the moving plate  210 . In this case, the first bent portions  242  included in the first guide units  240  may be provided to be bent from the first extension portions  241  included in the first guide units  240  in directions facing each other. 
     To reduce friction between the frame  110  and the moving plate  210 , one or more friction reducing members may be provided where the frame  110  and the moving plate  210  are in contact with each other. In examples, friction reducing members  112  may be provided on a portion of the frame  110  inserted between the first bent portion  242  and the moving plate  210 . 
     For example, as illustrated in  FIG.  16   , the frame  110  may include a first insertion portion  111  inserted into the first guide units  240  of the moving plate  210 , and the friction reducing members  112  may be provided on the first insertion portion  111 . The friction reducing members  112  may be projection-shaped members reducing a contact area between the frame  110  and the moving plate  210 . 
     When the friction reducing members  112  have a projection shape, the friction reducing members  112  may be provided to protrude from the upper and lower surfaces of the first insertion portion  111 . Alternatively, a friction reducing member (not illustrated) may be provided to protrude from an end portion of the first insertion portion  111  in a direction perpendicular to the optical axis (the Z-axis). In examples, the friction reducing members  112  may be integrated with the frame  110 . However, the friction reducing members  112  are not limited thereto, and may include, for example, a bushing, a linear bearing, or a ball bearing. Alternatively, friction reducing members (not illustrated) may be provided on the first guide units  240  of the moving plate  210 . 
     The frame  110  may contact with the moving plate  210  via the friction reducing members  112 . For example, the other portions of the frame  110 , other than the friction reducing members  112 , may be provided to be spaced apart from the moving plate  210  by a predetermined interval. Accordingly, a frictional force generated between the frame  110  and the moving plate  210  may be significantly low. 
     In examples, a lubricating material may be applied between the friction reducing members  112  and the first guide units  240  or the moving plate  210  to reduce friction therebetween. 
     The moving plate  210  may be disposed on the base  310  to move in a direction (for example, the Y-axis direction) perpendicular to the optical axis (the Z-axis). In examples, the base  310  may be provided with second guide units  340  guiding the movement of the moving plate  210 . 
     Referring to  FIG.  17   , the second guide units  340  may include a second extension portion  341  extending from the base  310  in the optical axis (Z-axis) direction, and a second bent portion  342  bent from the second extension portion  341  in a direction (for example, the X-axis direction) intersecting the optical axis (the Z-axis). The second extension portion  341  may be formed to be substantially vertical, and the second bent portion  342  and the base  310  may be formed to be substantially horizontal. For example, the second guide units  340  may have an inverted L-shaped cross-section and may extend along the base  310  in a second direction (for example, the Y-axis direction) perpendicular to the optical axis (the Z-axis). 
     At least a portion of the moving plate  210  may be inserted between the second bent portion  342  and the base  310  to slidably move in the second direction (the Y-axis direction) in which the second guide units  340  extend. 
     Alternatively, in examples, the second guide units  340  may be provided with a second guide groove surrounded by the base  310 , the second extension  341 , and the second bent portion  342 , and at least a portion of the moving plate  210  may be inserted into the second guide groove to slidably move in the second direction (the Y-axis direction). 
     The second guide units  340  may be provided on opposite edges of the base  310 . In this case, the second bent portions  342  included in the second guide units  340  may be provided to be bent from the second extension portions  341  included in the second guide units  340  in directions facing each other. 
     To reduce friction between the moving plate  210  and the base  310 , one or more friction reducing members may be provided where the moving plate  210  and the base  310  are in contact with each other. In examples, friction reducing members  212  may be provided on a portion of the moving plate  210  inserted between the second bent portion  342  and the base  310 . 
     For example, as illustrated in  FIG.  17   , the moving plate  210  may include a second insertion portion  211  inserted into the second guide units  340  of the base  310 , and the friction reducing members  212  may be provided on the second insertion portion  211 . The friction reducing members  212  may be projection-shaped members reducing a contact area between the moving plate  210  and the base  310 . 
     When the friction reducing members  212  have a projection shape, the friction reducing members  212  may be provided to protrude from the upper and lower surfaces of the second insertion portion  211 . Alternatively, a friction reducing member (not illustrated) may be provided to protrude from an end portion of the second insertion portion  211  in a direction perpendicular to the optical axis (the Z-axis). In examples, the friction reducing members  212  may be integrated with moving plate  210 . However, the friction reducing members  212  are not limited thereto, and may include, for example, a bushing, a linear bearing, or a ball bearing. Alternatively, friction reducing members (not illustrated) may be provided on the second guide units  340  of the base  310 . 
     The moving plate  210  may contact the base  310  via the friction reducing members  212 . For example, the other portions of the moving plate  210 , other than the friction reducing members  212 , may be provided to be spaced apart from the base  310  by a predetermined interval. Accordingly, a frictional force generated between the moving plate  210  and the base  310  may be significantly low. 
     In examples, a lubricating material may be applied between the friction reducing members  212  and the second guide units  340  or the base  310  to reduce friction therebetween. 
     Hereinafter, driving of the driving units  220 ,  230 ,  320 , and  330  according to examples will be described with reference to  FIGS.  18 A and  18 B . 
       FIGS.  18 A and  18 B  are reference views illustrating driving of a driving unit included in an image sensor module according to an example. 
     In  FIGS.  18 A and  18 B , one drive unit (for example, a third driving unit  320 ) will be described, but the description thereof may be equally applied to other drive units (for example, first, second, and fourth driving units  220 ,  230 , and  330 ). For example, in the following description, the driving unit  320  may correspond to one of the first to fourth driving units  220 ,  230 ,  320 , and  330 . 
     The driving unit  320  according to examples may include a wire  321  having a length that changes when power is applied to the wire  321 , a lever  322  connected to the wire  321  and rotating according to the change in the length of the wire  321 , and a lever shaft  323  forming a rotation axis of the lever  322 . 
     The wire  321  may be electrically connected to an external power source (not illustrated) through an electric wire  328  to receive a voltage or current. One end of the wire  321  may be fixed to the base  310  by a fixed member  324 , and another end of the wire  321  may be connected to the lever  322  by a connection member  325  to be movably provided. Accordingly, when the length of the wire  321  is contracts, the wire  321  may rotate the lever  322  by pulling the lever  322  connected to the wire  321  by the connection member  325 . 
     The lever  322  may include a connection portion  322   a  connected to the wire  321 , and a contact portion  322   b  contacting the moving plate  210 . The connection portion  322   a  of the lever  322  may be moved together with the wire  321  depending on the change in the length of the wire  321 , and the contact portion  322   b  may move the moving plate  210  and the image sensor  100  in a predetermined direction (for example, a Y-axis direction) according to the rotation of the lever  322 . 
     In examples, the rotation shaft of the lever  322  may be provided between the connection portion  322   a  and the contact portion  322   b . In this case, a distance from the connection portion  322   a  to the rotation shaft and a distance from the contact portion  322   b  to the rotation shaft may be different from each other. 
     For example, when a distance from the rotary shaft formed by the lever shaft  323  to the connection portion  322   a  is referred to as a first distance C1 and a distance from the rotary shaft to the contact portion  322   b  is referred to as a second distance C2, the first distance C1 may be smaller than the second distance C2 as illustrated in  FIG.  18 A . 
     Since the first distance C1 is smaller than the second distance C2, a trajectory of an arc drawn by the connection portion  322   a  according to the rotation of the lever  322  may be shorter than a trajectory of an arc drawn by the contact portion  322   b . 
     In addition, since the second distance C2 is larger than the first distance C1, a moving distance of the contact portion  322   b  rotating depending on the change in the length of the wire  321  may be greater than the amount of the change in the length of the wire  321 . Accordingly, a moving distance of the image sensor  100  moved by the contact portion  322   b  of the lever  322  may be relatively great compared with the amount of the change in the length of the wire  321 . 
     For example, when a predetermined voltage is applied, the amount of change in the length of the wire  321  is referred to as a third distance d1 and a distance by which the image sensor  100  moves depending on the change in the length of the wire  321  is referred to as a fourth distance d2, the fourth distance d2 may be greater than the third distance d1. 
     For example, in the image sensor module  10  according to examples, the moving distance of the image sensor  100  may have a value greater than the amount of the change in the length of the wire  321  through a structure of the lever  322  in which the first distance C1 and the second distance C2 are different from each other. 
     Accordingly, a sufficient movement stroke of the image sensor  100  may be secured even when the amount of the change in the length of the wire  321  is small. Thus, the image sensor module  10  according to examples may more effectively perform an optical image stabilization (OIS) function using the movement of the image sensor  100 . 
       FIGS.  19 A to  19 F  are reference views illustrating driving of an image sensor in an image sensor module according to an example. 
     The first driving unit  220  and the second driving unit  230  may move the frame  110  to which the image sensor  100  is coupled. For example, the first driving unit  220  and/or the second driving unit  230  may move the frame  110  in the first direction (X-axis direction). 
     The first driving unit  220  and the second driving unit  230  may be provided on the moving plate  210  and may be independently controlled. For example, one of the first driving unit  220  and the second driving unit  230  may be driven, while the other thereof may not be driven. 
     For example, as illustrated in  FIG.  19 A , as the second driving unit  230  is driven, the image sensor  100  may move in a negative direction of the first direction (the X-axis direction). 
     For example, as illustrated in  FIG.  19 B , as the first driving unit  220  is driven, the image sensor  100  may move in a positive direction of the first direction (the X-axis direction). 
     The first driving unit  220  and the second driving unit  230  may be driven simultaneously or sequentially. For example, the first driving unit  220  and the second driving unit  230  may simultaneously or sequentially receive currents or voltages having different magnitudes to precisely move the image sensor  100  to a desired position in the first direction (the X-axis direction). 
     The third driving unit  320  and the fourth driving unit  330  may be provided to move the moving plate  210 , and as the moving plate  210  is moved by the third driving unit  320  and the fourth driving unit  330  in the second direction (the Y-axis direction), the image sensor  100  may also be moved together with the moving plate  210 . 
     For example, the third driving unit  320  and the fourth driving unit  330  may move the moving plate  210  in the second direction (the Y-axis direction). As the moving plate  210  is moved, the first driving unit  220 , the second driving unit  230 , and the frame  110  provided on the moving plate  210  may also be moved. 
     The third driving unit  320  and the fourth driving unit  330  may be provided on the base  310  and may be independently controlled. For example, one of the third driving unit  320  and the fourth driving unit  330  may be driven, while the other thereof may not be driven. 
     For example, as illustrated in  FIG.  19 C , as the third driving unit  320  is driven, the moving plate  210  and the image sensor  100  may be moved in the positive direction of the second direction (the Y-axis direction). 
     For example, as illustrated in  FIG.  19 D , as the fourth driving unit  330  is driven, the moving plate  210  and the image sensor  100  may be moved in the negative direction of the second direction (the Y-axis direction). 
     The third driving unit  320  and the fourth driving unit  330  may be driven simultaneously or sequentially. For example, the third driving unit  320  and the fourth driving unit  330  may simultaneously or sequentially receive currents or voltages having different magnitudes to precisely move the image sensor  100  to a desired position in the second direction (the Y-axis direction). 
     At least some of the first to fourth driving units  330  may be driven simultaneously or sequentially. Accordingly, the image sensor  100  may be moved in various directions on a plane (an X-Y plane) perpendicular to the optical axis (the Z-axis). 
     For example, as illustrated in  FIG.  19 E , the first driving unit  220  and the third driving unit  320  may be simultaneously driven. For example, while the third driving unit  320  moves the moving plate  210  in the positive direction of the second direction (the Y-axis), the first driving unit  220  may simultaneously move the frame  110  in the positive direction of the first direction (the X-axis direction). 
     Accordingly, the image sensor  100  may be rapidly moved in a diagonal direction between the positive direction of the first direction (the X-axis direction) and the positive direction of the second direction (the Y-axis direction) to perform an optical image stabilization (OIS) function. 
     Alternatively, as illustrated in  FIG.  19 F , the second driving unit  230  and the fourth driving unit  330  may be simultaneously driven to rapidly move the image sensor  100  in a diagonal direction between the negative direction of the first direction the (X-axis direction) and the negative direction of the second direction (the Y-axis direction) to perform an OIS function. 
     In the image sensor module  10 , a plurality of driving units  220 ,  230 ,  320 , and  330  moving the image sensor  100  in different directions may be provided on different layers. 
     For example, the third driving unit  320  and the fourth driving unit  330  may be provided on the base  310 , and the first driving unit  220  and the second driving unit  230  may be provided on the moving plate  210  disposed above the base  310 . 
     Accordingly, even when the moving plate  210  is moved by the third driving unit  320  or the fourth driving unit  330 , the first driving unit  220  and the second driving unit  230  may be maintained in the same positions with respect to the image sensor  100 . 
     For example, relative positions between the first and second driving units  220  and  230  and the image sensor  100  may not be changed. Accordingly, the first driving unit  220  and the second driving unit  230  may precisely move the image sensor  100 , irrespective of whether the third driving unit  320  or the fourth driving unit  330  is driven, to accurately perform an OIS function. 
       FIG.  20    is a view illustrating a state in which an image sensor module is coupled to a camera module according to an example. 
     As illustrated in  FIG.  20   , an image sensor module  10  may be coupled to a lower portion of a housing  1000  of a camera module. 
     A lens module  2000  provided in the camera module may be moved in an optical axis (Z-axis) direction to focus lenses in the lens module  2000  on a subject, and the image sensor  100  provided in the image sensor module  10  independently of the lens module  200  may be moved in a direction (an X-axis direction and/or a Y-axis direction) perpendicular to the optical axis (the Z-axis) to compensate for shaking of the camera module. 
     As described above, a camera module according to an example may have a simple structure and a reduced size while implementing an autofocusing function and an optical image stabilization function. 
     While this disclosure includes specific examples, it will be apparent after an understanding of the disclosure of this application that various changes in form and details may be made in these examples without departing from the spirit and scope of the claims and their equivalents. The examples described herein are to be considered in a descriptive sense only, and are not for purposes of limitation. Descriptions of features or aspects in each example are to be considered as being applicable to similar features or aspects in other examples. Suitable results may be achieved if the described techniques are performed in a different order, and/or if components in a described system, architecture, device, or circuit are combined in a different manner, and/or replaced or supplemented by other components or their equivalents. Therefore, the scope of the disclosure is defined not by the detailed description, but by the claims and their equivalents, and all variations within the scope of the claims and their equivalents are to be construed as being included in the disclosure.