Lens driving device, camera module, and optical device

Abstract

The present embodiment relates to a lens driving device including a fixed portion, a moving portion, a coil holder, a magnet provided on either one of the coil holder and the fixed portion, a coil provided on the other one of the coil holder and the fixed portion, a support member having one end coupled to the coil holder and the other end coupled to the moving portion, and a shape memory alloy member coupled to the fixed portion and the moving portion, wherein the shape memory alloy member moves the moving portion in an optical axis direction, and the coil and the magnet move the coil holder relative to the moving portion in a direction perpendicular to the optical axis direction.

Description

TECHNICAL FIELD

[0001] The present embodiment relates to a lens driving device, a camera module, and an optical device. BACKGROUND

[0002] With the widespread popularity of distribution of various portable terminals and commercialization of wireless Internet services, consumer demand related to portable terminals is also diversifying, such that various types of additional devices are installed in portable terminals.

[0003] Among the various types of additional devices, there is a camera module that photographs a subject's photo or video as a representative additional device. Optical image stabilization (OIS) is applied to the camera module to prevent an image blur phenomenon caused by a photographer's hand shake. In addition, an auto focus (AF) function for automatically adjusting a focal length according to a distance of a subject is applied to the camera module.

[0004] However, as the aperture of a lens increases with the recent high-pixel trend in an image sensor, the weight of the lens also increases, such that there is a problem in that, when vibration or impact occurs in the camera module, stress applied to an elastic member supporting OIS driving increases. In addition, the increase in stress applied to the elastic member causes deformation and disconnection of the elastic member, such that there is a problem in that OIS cannot be driven and a hunting failure occurs.

[0005] However, as the aperture of a lens increases, when vibration and impact occur in the camera module, stress applied to a support member supporting AF driving increases, thereby causing deformation and disconnection of the support member, such that there is a problem in that AF cannot be driven and a hunting failure occurs. SUMMARY

[0006] TECHNICAL SUBJECT

[0007] A first embodiment of the present invention is intended to provide a lens driving device including an OIS support member capable of supporting OIS driving of a large-aperture lens.

[0008] In addition, the first embodiment of the present invention is intended to provide a lens driving device including an auto focus (AF) driving structure using a shape memory alloy (SMA).

[0009] A second embodiment of the present invention is intended to provide a lens driving device including an AF support member capable of supporting AF driving of a large-aperture lens.

[0010] In addition, the second embodiment of the present invention is intended to provide a lens driving device including an optical image stabilization (OIS) driving structure using a shape memory alloy (SMA).

[0011] Technical Solution

[0012] A lens driving device according to a first embodiment of the present application includes a fixed part, a moving part disposed to move with respect to the fixed part, a coil holder disposed inside the moving part, a magnet disposed on any one of the coil holder and the fixed part, a coil disposed on the other of the coil holder and the fixed part, a support member having one end coupled to the coil holder and the other end coupled to the moving part, and a shape memory alloy member coupled to the fixed part and the moving part, wherein the shape memory alloy member moves the moving part in an optical axis direction, and wherein the coil and the magnet can move the coil holder with respect to the moving part in a direction perpendicular to the optical axis direction.

[0013] Both ends of the shape memory alloy member can be connected to the fixed part, and the central region can be connected to the moving part.

[0014] The support member can include regions having different widths.

[0015] The support member can have a constant width in a length direction.

[0016] The width of a peripheral region of the support member can be thicker than that of a central region.

[0017] The support member can have a head portion and a body portion, and the width of the head portion can be greater than that of the body portion.

[0018] The shape memory alloy member can include a first unit shape memory alloy member and a second unit shape memory alloy member.

[0019] The magnet can include a first unit magnet and a second unit magnet.

[0020] The moving part includes a first corner region connected to the first unit shape memory alloy member and a second corner region adjacent to the first corner region, wherein the first unit magnet can be disposed closer to the second corner region than the first corner region.

[0021] The moving part includes a third corner region in a diagonal direction with respect to the first corner region, wherein the second unit shape memory alloy member is connected to the third corner region of the moving part, and wherein the second unit magnet can be disposed closer to the second corner region than the third corner region.

[0022] The support member can be disposed to have a longer length in the optical axis direction.

[0023] The coil holder can move together with the moving part when the moving part moves in the optical axis direction.

[0024] The support member includes a body portion and first and second concave portions formed to have a narrower width than the body portion, wherein the first concave portion of the support member is coupled to the coil holder, and wherein the second concave portion of the support member can be coupled to the moving portion.

[0025] The width of the first and second concave portions can be a width in a direction perpendicular to a length direction of the support member.

[0026] The body portion of the support member can be disposed between the first and second concave portions, and the body portion can include a portion that widens as it moves away from the first and second concave portions.

[0027] The support member includes a first fixed portion extending from the first concave portion to an opposite side of the body portion and formed to have a wider width than the first concave portion, and a second fixed portion extending from the second concave portion to an opposite side of the body portion and formed to have a wider width than the second concave portion, wherein the first concave portion is disposed at a higher position than the second concave portion, wherein the first fixed portion is coupled to the coil holder, and wherein the second fixed portion can be coupled to the moving portion.

[0028] An upper surface of the support member can be coupled to the coil holder, and a lower surface of the support member can be coupled to the moving portion.

[0029] The support member can include an elastic body.

[0030] The fixed portion includes a base and a base plate disposed in the base, wherein the magnet is disposed on an outer circumferential surface of the coil holder, and wherein the coil can be disposed in the base plate.

[0031] The moving portion includes a lower plate disposed between the coil holder and the base in the optical axis direction, and a side wall protruding from an upper surface of the lower plate, wherein the side wall of the moving portion includes a hole or a recess, and wherein the magnet can be disposed in the hole or the recess of the moving portion.

[0032] The moving portion can not be disposed between the magnet and the coil, such that the magnet and the coil directly face each other.

[0033] The shape memory alloy member includes a shape memory alloy wire, wherein the shape memory alloy wire has one end portion and another end portion fixed to the fixed portion, and wherein a portion located between the one end portion and the other end portion can be captured in the moving portion.

[0034] The moving part includes a lower plate disposed between the coil holder and the fixed part in the optical axis direction, and a side wall protruding from an upper surface of the lower plate, wherein the moving part can include a protrusion formed to protrude from an outer circumferential surface of the side wall of the moving part, and a groove formed to be open downward to the protrusion to receive the shape memory alloy wire.

[0035] The protrusion of the moving part can be formed at a corner of the moving part, and the groove of the moving part can be spaced apart from the outer circumferential surface of the side wall.

[0036] The groove of the moving part includes a first surface in contact with the shape memory alloy wire, wherein the first surface of the groove of the moving part can include a plane disposed in a direction perpendicular to the optical axis direction.

[0037] The first surface of the groove of the moving part can include a first chamfer surface extending obliquely from a first portion of the plane toward one end portion of the shape memory alloy wire, and a second chamfer surface extending obliquely from a second portion of the plane toward the other end portion of the shape memory alloy wire.

[0038] The coil includes a first coil disposed in a first direction perpendicular to the optical axis direction, and a second coil disposed in a second direction perpendicular to the optical axis direction and the first direction, wherein the magnet includes a first magnet facing the first coil and a second magnet facing the second coil, and wherein each of the first magnet and the second magnet can include two magnets spaced apart from each other.

[0039] The lens driving device includes a first Hall sensor detecting the first magnet, a second Hall sensor detecting the second magnet, and a driver IC for controlling a current applied to the shape memory alloy member, wherein the fixed part includes a substrate electrically connected to the coil and including a plurality of terminals, wherein the plurality of terminals of the plate can include four terminals electrically connected to the driver IC, two terminals connected to the first coil, two terminals connected to the second coil, four terminals connected to the first Hall sensor, and four terminals connected to the second Hall sensor.

[0040] A camera module according to a first embodiment of the present application can include a printed circuit board, an image sensor disposed in the printed circuit board, a lens driving device disposed in the printed circuit board, and a lens coupled to a coil holder of the lens driving device.

[0041] An optical device according to the first embodiment of the present application includes a main body, a camera module disposed on the main body, and a display disposed on the main body and outputting an image photographed by the camera module.

[0042] A lens driving apparatus according to a first embodiment of the present application includes a fixed part, a moving part that moves in an optical axis direction with respect to the fixed part, a coil holder provided inside the moving part, a driving unit for moving the coil holder in a direction perpendicular to the optical axis direction, a support member coupled to the coil holder and the moving part, and a shape memory alloy member coupled to the fixed part and the moving part, wherein the support member can include regions having different widths.

[0043] The width of the peripheral region of the support member can be thicker than the central region.

[0044] The support member can have a head part and a body part, and the width of the head part can be greater than the width of the body part.

[0045] The shape memory alloy member includes a first unit shape memory alloy member coupled to a first corner region of the moving part, and the driving unit can include a first unit driving unit adjacent to a second corner region adjacent to the first corner region rather than adjacent to the first corner region.

[0046] The first unit driving unit can include a first magnet provided in the coil holder, and a first coil provided in the fixed part and facing the first magnet.

[0047] A lens driving apparatus according to a first embodiment of the present application includes a fixed part, a moving part that moves in an optical axis direction with respect to the fixed part, a coil holder provided inside the moving part, a driving unit for moving the coil holder in a direction perpendicular to the optical axis direction, a support member for supporting the coil holder, and a shape memory alloy member for coupling to the fixed part and the moving part, wherein the shape memory alloy member includes a first unit shape memory alloy member coupled to a first corner region of the moving part, and wherein the driving unit can include a first unit driving unit adjacent to a second corner region adjacent to the first corner region rather than adjacent to the first corner region.

[0048] The shape memory alloy member can include a second unit shape memory alloy member coupled to the first corner region of the moving part and a third corner region of the moving part in a diagonal direction.

[0049] The driving unit can include a second unit driving unit adjacent to a fourth corner region adjacent to the third corner region rather than adjacent to the third corner region.

[0050] The support member can include a non-metallic material.

[0051] The first unit driving unit can include a first magnet disposed in the coil holder and a first coil disposed in the fixed portion and facing the first magnet.

[0052] A lens driving apparatus according to a second embodiment of the present application includes a housing, a coil holder disposed inside the housing, a coil and a magnet for moving the coil holder in an optical axis direction, and a support member connecting the housing and the coil holder, wherein the coil holder includes a groove formed on an outer surface of the coil holder, and wherein the support member can include a first fixed portion fixed inside the groove of the coil holder.

[0053] The housing can include a groove formed on an inner surface of the housing, and the support member can include a second fixed portion fixed inside the groove of the housing.

[0054] The support member includes a connection portion connecting the first fixed portion and the second fixed portion, and the connection portion can be formed to have a width smaller than that of the first fixed portion and the second fixed portion at a portion connected to the first fixed portion and the second fixed portion.

[0055] The width of the connection portion can be a length in a direction perpendicular to a length direction of the connection portion.

[0056] The connection portion can include a portion whose width increases as it moves away from the first fixed portion and the second fixed portion.

[0057] An outer surface of the connection portion can include a curved surface.

[0058] The groove of the coil holder extends from an upper surface of the coil holder,

[0059] and the groove of the housing can extend from an upper surface of the housing.

[0060] The groove of the coil holder can include a locking protrusion spaced apart by a width smaller than that of the first fixed portion so that the first fixed portion is captured.

[0061] The groove of the housing can include a locking protrusion spaced apart by a width smaller than that of the second fixed portion so that the second fixed portion is captured.

[0062] The magnet is disposed in the coil holder and the coil can be disposed on the housing.

[0063] The lens driving apparatus can include a base disposed below the housing, a first substrate disposed in the base, and a shape memory alloy member connecting the housing and the first substrate.

[0064] The shape memory alloy member includes a first coupling portion coupled to a housing, a second coupling portion coupled to a first substrate, and a shape memory alloy wire for connecting the first coupling portion and the second coupling portion, wherein a length of the shape memory alloy wire can be changed when a current is applied.

[0065] The shape memory alloy member includes a conductive wire connecting the first coupling portion and the first substrate, wherein the shape memory alloy wire can include a first shape memory alloy wire disposed in a first direction perpendicular to an optical axis direction and a second shape memory alloy wire disposed in a second direction perpendicular to the optical axis direction and the first direction.

[0066] The shape memory alloy wire includes a first shape memory alloy wire to a fourth shape memory alloy wire, wherein the first substrate can include first to fourth terminals connected to each of the first to fourth shape memory alloy wires and a fifth terminal commonly connected to the first to fourth shape memory alloy wires.

[0067] The shape memory alloy wire can include a support disposed between the housing and the base or the housing and the first substrate to be in contact with the housing when the housing moves in a direction perpendicular to the optical axis direction.

[0068] The shape memory alloy wire includes an elastic member coupled to an upper surface of the base and an upper surface of the housing, wherein the elastic member can press the housing in a direction toward the support.

[0069] The shape memory alloy wire includes a second substrate disposed in a side surface of the base and electrically connected to the first substrate, wherein the elastic member includes first and second elastic members spaced apart from each other, and wherein the coil can be electrically connected to the second substrate through the first and second elastic members.

[0070] The support member can be formed of an elastomer.

[0071] A camera module according to a second embodiment of the present application can include a printed circuit board, an image sensor disposed in the printed circuit board, a lens driving device disposed in the printed circuit board, and a lens coupled to a bobbin of the lens driving device.

[0072] An optical device according to the second embodiment of the present application can include a main body, a camera module disposed in the main body, and a display disposed in the main body and outputting an image photographed by the camera module.

[0073] A lens driving device according to a second embodiment of the present application includes a housing, a coil holder provided inside the housing, a coil and a magnet for moving the coil holder in an optical axis direction, and a support member connecting the housing and the coil holder, wherein a groove is formed in an outer surface of at least one of the coil holder and the housing, and wherein the support member can include a fixed portion fixed inside the groove.

[0074] Advantageous Effects

[0075] With the first embodiment of the present application, deformation of an OIS support member for supporting OIS driving of a large-aperture lens can be prevented. Thus, OIS driving of a large-aperture lens can be smoothly performed.

[0076] Further, AF driving using SMA can be performed with the first embodiment of the present application.

[0077] With the second embodiment of the present application, deformation of an AF support member for supporting AF driving of a large-aperture lens can be prevented. Thus, AF driving of a large-aperture lens can be smoothly performed.

[0078] Further, OIS driving using SMA can be performed. BRIEF DESCRIPTION OF DRAWINGS

[0079] Figure 1 is a perspective view of a lens driving device according to the first embodiment of the present application.

[0080] Figure 2 is a view of the lens driving device according to the first embodiment of the present application, as viewed from a direction different from that of Figure 1 .

[0081] Figure 3 is a cross-sectional view taken along line A-A of Figure 1 .

[0082] Figure 4 is a cross-sectional view taken along line B-B of Figure 1 .

[0083] Figure 5 is an exploded perspective view of a lens driving device according to the first embodiment of the present application.

[0084] Figure 6 is an exploded perspective view of the lens driving device according to the first embodiment of the present application, as viewed from a direction different from that of Figure 5 .

[0085] Figure 7 is a perspective view illustrating a state in which a cover member is removed from the lens driving device of Figure 1 .

[0086] Figure 8 is a plan view of a state in which a substrate is removed from the lens driving device of Figure 7

[0087] Figure 9a is a plan view of a state in which a substrate is removed from the lens driving device of Figure 8

[0088] Figure 9b is a view illustrating a coupling structure between a coil, a shape memory alloy member, and a substrate in the lens driving device according to the first embodiment of the present application.

[0089] Figure 10 is a perspective view and an enlarged view illustrating a coil holder and a related configuration of the lens driving device according to the first embodiment of the present application.

[0090] Figure 11 is a perspective view and an enlarged view illustrating a housing and a related configuration of the lens driving device according to the first embodiment of the present application.

[0091] Figure 12 is a partial perspective plan view of a portion of the lens driving device according to the first embodiment of the present application.

[0092] Figure 13 is a partial perspective view of a portion of the lens driving device according to the first embodiment of the present application.

[0093] Figure 14 is a view illustrating a coupling structure between a shape memory alloy member and a housing of the lens driving device according to the first embodiment of the present application.

[0094] Figure 15 is a perspective view illustrating a coupling structure between a shape memory alloy member and a housing of the lens driving device according to the first embodiment of the present application.

[0095] Figure 16 is an enlarged perspective view of a portion of a housing of the lens driving device according to the first embodiment of the present application, which is coupled to a shape memory alloy member.

[0096] Figure 17 is a cross-sectional view of a portion of the lens driving device according to the first embodiment of the present application.

[0097] Figure 18 is an exploded perspective view of the camera device according to the first embodiment of the present application.

[0098] Figure 19 is a perspective view illustrating the optical device according to the first embodiment of the present application.​​

[0099] Figure 20 is a block diagram of an optical device according to the first embodiment of the present application.

[0100] Figure 21 is a perspective view of a lens driving device according to the second embodiment of the present application.

[0101] Figure 22 is a cross-sectional view taken along line A-A of Figure 21 .

[0102] Figure 23 is a cross-sectional view taken along line B-B of Figure 21 .

[0103] Figure 24a is a cross-sectional view taken along line C-C of Figure 21 and is a partial enlarged view.

[0104] Figure 24b is an enlarged view illustrating a coupling structure of a support member and a coil holder according to the second embodiment of the present application.

[0105] Figure 24c is an enlarged view illustrating a coupling structure of a support member and a housing according to the second embodiment of the present application.

[0106] Figure 24d is a plan view of a support member according to the second embodiment of the present application.

[0107] Figure 24e is a plan view of a support member according to a modified embodiment.

[0108] Figure 25 is an exploded perspective view of a lens driving device according to the second embodiment of the present application.

[0109] Figure 26 is a perspective view illustrating a state in which a cover member of a lens driving device according to the second embodiment of the present application is removed.

[0110] Figure 27 is a plan view illustrating a state in which a cover member of a lens driving device according to the second embodiment of the present application is removed.

[0111] Figure 28 is a perspective view illustrating a first mover and a second mover of a lens driving device according to the second embodiment of the present application.

[0112] Figure 29 is a perspective view illustrating a coupling state of a first mover, a second mover, an elastic member, and a second substrate of a lens driving device according to the second embodiment of the present application.

[0113] Figure 30 is a perspective view illustrating a first substrate, a second substrate, and a shape memory alloy member of a lens driving device according to a second embodiment of the present application.

[0114] Figure 31a is a view for explaining driving of a shape memory alloy member of a lens driving device according to the second embodiment of the present application.

[0115] Figure 31b is a view illustrating a coupling structure of a shape memory alloy member and a housing according to the second embodiment of the present application.

[0116] Figure 32 is a side view illustrating a state in which a cover member of a lens driving device according to the second embodiment of the present application is removed.

[0117] Figure 33 is a view for explaining a housing, a support, and related structures of a lens driving device according to the second embodiment of the present application.

[0118] Figure 34 is a view for explaining a coupling structure of a shape memory alloy member of a lens driving device according to the second embodiment of the present application.

[0119] Figure 35 is an exploded perspective view of a camera device according to the second embodiment of the present application.

[0120] Figure 36 is a perspective view illustrating an optical device according to the second embodiment of the present application.

[0121] Figure 37 is a block diagram of an optical device according to the second embodiment of the present application. DETAILED DESCRIPTION

[0122] Hereinafter, a preferred embodiment of the present application will be described in detail with reference to the accompanying drawings.

[0123] However, the technical idea of the present application is not limited to some embodiments to be described, but can be implemented in various forms, and within the scope of the technical idea of the present application, one or more of the constituent elements among the constituent elements can be selectively combined or replaced between the embodiments.

[0124] In addition, unless explicitly defined and described, the terms used in the embodiments of the present application, including technical and scientific terms, can be interpreted as meanings that can be commonly understood by those skilled in the art, and the terms commonly used, such as those defined in a dictionary, can be interpreted in the meaning considering the background of the related art.

[0125] Also, the terms used in the present disclosure are used to describe the embodiments, and are not intended to limit the present disclosure.

[0126] In the present disclosure, the singular form can include the plural form unless specifically described in the phrase in the singular form, and when described as "at least one of A, B, and C (or more than one of A, B, and C)", it can include one or more of all combinations that can be combined with A, B, and C.

[0127] Also, in describing components of the embodiments of the present disclosure, terms such as first, second, A, B, (a), and (b) can be used. These terms are merely intended to distinguish a component from other components, and the terms do not limit the nature, order or sequence of the components.

[0128] Also, when a component is described as being "connected", "coupled", or "interconnected" to another component, the component can not only be directly connected, coupled, or interconnected to the other component, but can also include being "connected", "coupled", or "interconnected" to the other component through another component between them.

[0129] Also, when described as being formed or disposed "on (above)" or "under (below)" each component, "on (above)" or "under (below)" means that it not only includes a case where two components directly contact each other, but also includes a case where one or more other components are formed or disposed between the two components. Also, when expressed as "on (above)" or "under (below)", it can not only include a meaning based on an upward direction of one component, but also include a meaning based on a downward direction of one component.

[0130] "Optical axis direction" used hereinafter is defined as a direction of an optical axis of a lens and / or an image sensor coupled to a lens driving device.

[0131] "Vertical direction" used hereinafter can be a direction parallel to the optical axis direction. The vertical direction can correspond to "z-axis direction". "Horizontal direction" used hereinafter can be a direction perpendicular to the vertical direction. That is, the horizontal direction can be a direction perpendicular to the optical axis. Accordingly, the horizontal direction can include "x-axis direction" and "y-axis direction".

[0132] "Auto focus (AF) function" used hereinafter is defined as a function of automatically focusing on an object so that an image sensor can obtain a clear image of the object by adjusting a distance from the image sensor by moving the lens along the optical axis direction according to a distance of the object.

[0133] The term "Optical Image Stabilization (OIS)" as used below is defined as the function of moving or tilting a lens in a direction perpendicular to the optical axis by an external force to counteract vibrations (motions) generated in the image sensor.

[0134] In the following description, the configuration of the lens driving device according to the first embodiment of the present invention will be described with reference to the accompanying drawings.

[0135] Figure 1 This is a perspective view of a lens driving device according to a first embodiment of the present invention; Figure 2 The lens driving device according to the first embodiment of the present invention is a follower and follower. Figure 1 Views viewed from different directions; Figure 3 It is along Figure 1 A cross-sectional view of line AA; Figure 4 It is along Figure 1 A cross-sectional view of line BB; Figure 5 This is an exploded perspective view of a lens driving device according to a first embodiment of the present invention; Figure 6 The lens driving device according to the first embodiment of the present invention is a follower and follower. Figure 5 Decomposed stereoscopic view viewed from different directions; Figure 7 It is a diagram showing from Figure 1 A three-dimensional view of the lens drive device with the cover component removed; Figure 8 From Figure 7 A plan view showing the state of the substrate removed from the lens driving device; Figure 9a It is a diagram showing from Figure 8 A plan view showing the state of the base removed from the lens drive device; Figure 9b This is a diagram illustrating the connection structure between the coil, the shape memory alloy component, and the substrate in a lens driving device according to a first embodiment of the present invention; Figure 10 These are perspective and enlarged views illustrating the coil frame and related configuration of the lens driving device according to a first embodiment of the present invention; Figure 11 These are perspective views and enlarged views illustrating the housing and related configuration of the lens driving device according to a first embodiment of the present invention; Figure 12 This is a partial perspective plan view of a part of the lens driving device according to a first embodiment of the present invention; Figure 13 This is a partial perspective perspective view of a portion of a lens driving device according to a first embodiment of the present invention; Figure 14 This is a view illustrating the connection structure between the shape memory alloy component and the housing of the lens driving device according to a first embodiment of the present invention; Figure 15 This is a perspective view illustrating the connection structure between the shape memory alloy component and the housing of the lens driving device according to a first embodiment of the present invention; Figure 16is an enlarged perspective view of a portion of a housing of a lens driving device according to a first embodiment of the present application, which is coupled to a shape memory alloy member; and Figure 17 is a cross-sectional view of a portion of a lens driving device according to a first embodiment of the present application.

[0136] The lens driving device 10 can be a voice coil motor (VCM). The lens driving device 10 can be a lens driving motor. The lens driving device 10 can be a lens driving actuator. The lens driving device 10 can include an AF module. The lens driving device 10 can include an OIS module.

[0137] The lens driving device 10 can include a first mover 100. The first mover 100 can be coupled with a lens. The first mover 100 can be coupled to a second mover 200 by a support member 500. The first mover 100 can be moved by interacting with a stator 300. At this time, the first mover 100 can be moved integrally with the lens. Meanwhile, the first mover 100 can be moved during OIS driving. At this time, the first mover 100 can be referred to as an "OIS mover". However, the first mover 100 can be moved together with the second mover 200 even during AF driving.

[0138] The lens driving device 10 can include a bobbin 110. The first mover 100 can include the bobbin 110. The bobbin 110 can be disposed inside the housing 210. The bobbin 110 can be disposed in a hole of the housing 210. The bobbin 110 can be movably coupled to the housing 210. The bobbin 110 can be moved inside the housing 210 in a direction perpendicular to an optical axis. The bobbin 110 can be moved in a direction perpendicular to the optical axis by the coil 330 and the magnet 120. The lens can be coupled to the bobbin 110. The bobbin 110 and the lens can be coupled by a thread coupling and / or an adhesive. The magnet 120 can be disposed in the bobbin 110. Alternatively, in a modified embodiment, the coil 330 can be disposed in the bobbin 110.

[0139] In the first embodiment of the present application, the bobbin 110 can be moved together with the housing 210 when the housing 210 is moved in the direction of the optical axis. However, when the bobbin 110 is moved in a direction perpendicular to the direction of the optical axis, the housing 210 is fixed and only the bobbin 110 can be moved.

[0140] The coil holder 110 can include a recess 111. The recess 111 can be formed at an outer surface of the coil holder 110. The recess 111 of the coil holder 110 can be formed in a protrusion protruding from an upper portion of the coil holder 110. The recess 111 of the coil holder 110 can be open to the outside of the coil holder 110. The support member 500 can be coupled to the recess 111 of the coil holder 110. The first concave portion 520 of the support member 500 can be hooked and fixed to the recess 111 of the coil holder 110. The support member 500 can be inserted into the recess 111 of the coil holder 110 from the outside. The recess 111 of the coil holder 110 can be formed as a hole. In this case, at least a portion of the support member 500 can be disposed to penetrate the hole of the coil holder 110. The hole or the recess 111 of the coil holder 110 can be coupled to the first concave portion 520 of the support member 500.

[0141] The lens driving device 10 can include a magnet 120. The first mover 100 can include the magnet 120. The magnet 120 can be disposed in the coil holder 110. Alternatively, in a modified embodiment, the magnet 120 can be disposed in the base 310. In this case, the coil 330 can be disposed in the coil holder 111. The magnet 120 can be disposed at an outer side surface or an outer circumferential surface of the coil holder 110. The magnet 120 can be fixed to the coil holder 110 by an adhesive. The magnet 120 can overlap the coil holder 110 in the optical axis direction. The magnet 120 can overlap the housing 210 in the optical axis direction. The magnet 120 can face the coil 330. The magnet 120 can electromagnetically interact with the coil 330. The magnet 120 can move the coil holder 110 in a direction perpendicular to the optical axis by interacting with the coil 330. The magnet 120 can be used during OIS driving. The magnet 120 can be disposed at a side surface of the coil holder 110. The magnet 120 can be a flat magnet having a flat plate shape.

[0142] The magnet 120 can be disposed in any one of the coil holder 110 and the fixed portion. The coil 330 can be disposed in the other of the coil holder 110 and the fixed portion. The coil 330 and the magnet 120 can move the coil holder 110 relative to the moving portion in a direction perpendicular to the optical axis direction.

[0143] The magnet 120 can include a plurality of magnets. The magnet 120 can include four magnets. The magnet 120 can include a first magnet 121 and a second magnet 122. The magnet 120 can include two first magnets 121 and two second magnets 122. The magnet 120 can include a first magnet 121 facing the first coil 331 and a second magnet 122 facing the second coil 332. Each of the first magnet 121 and the second magnet 122 can include two magnets spaced apart from each other and symmetrical about the optical axis.

[0144] The lens driving device 10 can include a second mover 200. The second mover 200 can be disposed inside the stator 300. The second mover 200 can be disposed in a suspended state by being captured by the shape memory alloy member 400 inside the stator 300. The second mover 200 can be pressed downward by the elastic member 600. The second mover 200 can support the first mover 100 by the support member 500. The second mover 200 can support the movement of the first mover 100 or can move together with the first mover 100. In more detail, the second mover 200 moves together with the first mover 100 when moving in the direction of the optical axis, and the second mover 200 can support the movement of the first mover 100 in a relatively fixed state when the first mover 100 moves in a direction perpendicular to the optical axis. The second mover 200 can move by the shape memory alloy member 400. The second mover 200 can move during AF driving. At this time, the second mover 200 can be referred to as an "AF mover". The second mover 200 can move integrally with the first mover 100 during AF driving.

[0145] The lens driving device 10 can include a housing 210. The housing 210 can be a "moving part". The second mover 200 can include the housing 210. The housing 210 can be disposed on the base 310. The housing 210 can be disposed inside the base 310. The housing 210 can be spaced apart from the base 310. The housing 210 can be disposed outside the coil holder 110. The housing 210 can accommodate at least a portion of the coil holder 110. The housing 210 can be disposed inside the cover member 340. The housing 210 can be disposed between the cover member 340 and the coil holder 110. The housing 210 can be formed of a material different from that of the cover member 340. The housing 210 can be formed of an insulating material. The housing 210 can be formed of an injection-molding material.

[0146] The housing 210 can include four side portions and four corner portions disposed between the four side portions. The side portions of the housing 210 can include a first side portion, a second side portion disposed opposite the first side portion, a third side portion disposed opposite each other between the first side portion and the second side portion, and a fourth side portion. The corner portions of the housing 210 can include a first corner portion disposed between the first side portion and the third side portion, a second corner portion disposed between the first side portion and the fourth side portion, a third corner portion disposed between the second side portion and the third side portion, and a fourth corner portion disposed between the second side portion and the fourth side portion. The side portions of the housing 210 can include a "side wall 213". The housing 210 can include the side wall 213. The side wall 213 can include a side wall 213 protruding from the upper surface of the lower plate 212.

[0147] The housing 210 can include a recess 211. The recess 211 can be formed in an inner surface of the housing 210. The recess 211 can be formed in a protrusion protruding from a lower portion of the housing 210. The recess 211 can be open toward an inner side of the housing 210. The support member 500 can be coupled to the recess 211. The second concave portion 530 of the support member 500 can be captured by the recess 211 and fixed to the recess 211. The support member 500 can be inserted into the recess 211 from the inside. The recess 211 can be formed as a hole. In this case, at least a portion of the support member 500 can be disposed to pass through the hole of the housing 210. The hole of the housing 210 or the recess 211 can be coupled to the second concave portion 530 of the support member 500.

[0148] In the first embodiment of the present application, the protrusion of the yoke 110 is provided at the upper portion and the protrusion of the housing 210 is provided at the lower portion, so that the support member 500 can connect the protrusion of the yoke 110 and the protrusion of the housing 210. At this time, the protrusion of the yoke 110 can overlap the protrusion of the housing 210 in the optical axis direction. Further, the protrusion of the yoke 110 can be disposed above the protrusion of the housing 210 in the optical axis direction. The protrusion of the yoke 110 can be coupled to the first concave portion 520 of the support member 500. The protrusion of the housing 210 can be coupled to the second concave portion 530 of the support member 500. Alternatively, the protrusion of the yoke 110 can be provided at the lower portion and the protrusion of the housing 210 can be provided at the upper portion. At this time, the protrusion of the housing 210 is coupled to the first concave portion 520 of the support member 500, and the protrusion of the yoke 110 can be coupled to the second concave portion 530 of the support member 500.

[0149] The housing 210 can include a lower plate 212. The lower plate 212 can be disposed between the yoke 110 and the base 310 in the optical axis direction. The lower plate 212 can be disposed in a direction perpendicular to the optical axis direction. The lower plate 212 can be disposed below the yoke 110. The support member 500 can be coupled to the lower plate 212 of the housing 210. The support member 500 can be fixed to the lower plate 212 of the housing 210.

[0150] The housing 210 can include a recess 214. The side wall 213 of the housing 210 can include a hole or a recess 214. The recess 214 can be formed separately. The magnet 120 can be disposed in the hole or the recess 214 of the housing 210. Thereby, in the first embodiment of the present application, the housing 210 can not be disposed between the magnet 120 and the coil 330, so that the magnet 120 and the coil 330 directly face each other. That is, the housing 210 can include an avoidance structure for minimizing a gap between the magnet 120 and the coil 330.

[0151] The housing 210 can include a protrusion 215. The protrusion 215 can be formed to protrude from an outer circumferential surface of the side wall 213 of the housing 210. The protrusion 215 can be formed at a corner of the housing 210. The protrusion 215 can be coupled with the shape memory alloy member 400. The protrusion 215 can be formed at an upper portion of the housing 210. The base 310 can include a groove formed at an inner circumferential surface of the base 310 to prevent interference with the protrusion 215 of the housing 210.

[0152] The housing 210 can include a groove 216. The groove 216 can be formed to be open downward in the protrusion 215. The shape memory alloy wire 410 can be captured in the groove 216. The groove 216 of the housing 210 can be spaced apart from the outer circumferential surface of the side wall 213. In the first embodiment of the present application, the injection-molded product on which the shape memory alloy wire 410 is captured can be formed in a two-stage structure. When the groove 216 is attached to the housing 210, the housing 210 and the shape memory alloy wire 410 can interfere with each other during the AF driving, and thus a distance from the side wall 213 of the housing 210 can be provided. Incidentally, the reason why the outer end portion height is low can be to facilitate assembly of the shape memory alloy wire 410.

[0153] The groove 216 of the housing 210 can include a first surface in contact with the shape memory alloy wire 410. The first surface of the groove 216 of the housing 210 can include a flat surface 216-1 disposed perpendicular to an optical axis direction. The first surface of the groove 216 of the housing 210 can include a first chamfered surface 216-2 obliquely extending from a first portion of the flat surface 216-1 toward one end of the shape memory alloy wire 410 and a second chamfered surface 216-3 obliquely extending from a second portion of the flat surface 216-1 toward the other end of the shape memory alloy wire 410. The first surface of the groove 216 of the housing 210 can include any one or more of the flat surface 216-1, the first chamfered surface 216-2, and the second chamfered surface 216-3. That is, at least one of the flat surface 216-1, the first chamfered surface 216-2, and the second chamfered surface 216-3 can be omitted. In the first embodiment of the present application, a chamfer can be formed in a portion in which the shape memory alloy wire 410 is captured in the groove 216 of the housing 210. Since a stroke that can be achieved becomes shorter as a straight portion is lengthened in the groove 216 of the housing 210, a chamfer can be applied according to an angle of the shape memory alloy wire 410. In this way, the straight portion can be minimized.

[0154] The housing 210 can include a recess 217. The recess 217 can be formed at an upper surface of the housing 210. The elastic member 600 can be disposed in the recess 217. The recess 217 can include a shape corresponding to a shape of at least a portion of the elastic member 600. A portion of the elastic member 600 can be inserted into the recess 217. Thereby, the elastic member 600 can be prevented from being separated from the recess 217 of the housing 210.

[0155] The lens driving device 10 can include a yoke 220. The second mover 200 can include the yoke 220. The yoke 220 can be disposed at an upper surface of the housing 210. An attractive force can act between the yoke 220 and the magnet 120. In a state in which no current is applied to the coil 330, the magnet 120 can be fixed at a position as close to the yoke 220 as possible. That is, the yoke 220 can provide an attractive force so that the magnet 120 can return to an original position of the magnet 120 in a state in which no current is applied to the coil 330.

[0156] The lens driving device 10 can include a stator 300. The stator 300 can house the first mover 100 and the second mover 200 therein. The stator 300 can include a relatively fixed configuration even when any one or more of the first mover 100 and the second mover 200 moves. The stator 300 can movably support the second mover 200. The stator 300 can move the first mover 100 and the second mover 200. The stator 300 can include a "fixed portion". The fixed portion can include a base 310 and a base plate 320.

[0157] The lens driving device 10 can include the base 310. The stator 300 can include the base 310. The base 310 can be disposed below the housing 210. The base 310 can house at least a portion of the housing 210 therein. The base plate 320 can be disposed at an outer circumferential surface of the base 310. The base 310 can be coupled to a cover member 340. The base 310 can be disposed on the printed circuit board 50.

[0158] The base 310 can include a stepped portion 311. The stepped portion 311 can be formed at a side surface of the base 310. The stepped portion 311 can be formed at a lower end of the base 310. The stepped portion 311 can be formed to protrude from an outer circumference of the base 310. A side plate 342 of the cover member 340 can be seated on the stepped portion 311.

[0159] The base 310 can include a lower plate 312. The lower plate 312 can be disposed below the housing 210. The lower plate 312 can be disposed in parallel with the lower plate 212 of the housing 210. The lower plate 312 can be disposed in a direction perpendicular to an optical axis direction.

[0160] The base 310 can include a side wall 313. The side wall 313 can protrude upward from the lower plate 312. The side wall 313 can include a plurality of side walls. The side wall 313 can include four side walls. A hole or a groove in which the coil 330 is disposed can be formed in the side wall 313 of the base 310. The coil 330 can be disposed at the side wall 313 of the base 310.

[0161] The lens driving device 10 can include a substrate 320. The stator 300 can include the substrate 320. The substrate 320 can be disposed in the base 310. The substrate 320 can be electrically connected to the coil 330. The substrate 320 can be disposed around the outer circumferential surface of the base 310. The substrate 320 can be electrically connected to the printed circuit board 50 disposed below the base 310. The substrate 320 can include a flexible printed circuit board (FPCB). The substrate 320 can be curved in some portions.

[0162] The substrate 320 can include a terminal 321. The terminal 321 can be formed at the side surface of the substrate 320. The terminal 321 can be formed at the lower end of the substrate 320. The terminal 321 of the substrate 320 can be electrically connected to the printed circuit board 50 by solder or conductive epoxy.

[0163] The substrate 320 can include a plurality of terminals 321. The plurality of terminals 321 can include 16 terminals. The plurality of terminals 321 of the substrate 320 can include four terminals electrically connected to the driver IC 703, two terminals connected to the first coil 331, two terminals connected to the second coil 332, four terminals connected to the first Hall sensor 701, and four terminals connected to the second Hall sensor 702. At this time, one terminal connected to the first Hall sensor 701 can be commonly used with the second Hall sensor 702. In this case, the terminals for the first Hall sensor 701 and the second Hall sensor 702 can be formed by seven terminals.

[0164] In more detail, the four terminals electrically connected to the driver IC 703 can include SDA, SCL, VDD, and GND terminals. The two terminals connected to the first coil 331 for driving in the OIS-X direction can include (+) and (-) terminals. The terminals connected to the first Hall sensor 701 can include Hall input (+) and (-) terminals and Hall output (+) and (-) terminals. The two terminals connected to the second coil 332 for driving in the OIS-Y direction can include (+) and (-) terminals. The terminals connected to the second Hall sensor 702 can include Hall input (+) and (-) terminals and Hall output (+) and (-) terminals.

[0165] The lens driving device 10 can include a coil 330. The stator 300 can include the coil 330. The coil 330 can be an "OIS driving coil" for OIS driving. The coil 330 can be disposed in the base 310. Alternatively, in a modified embodiment, the coil 330 can be disposed in the coil holder 110. In this case, the magnet 120 can be disposed in the base 310. The coil 330 can be disposed between the coil holder 110 and the base 310. The coil 330 can be disposed in a groove or a hole formed at the sidewall 313 of the base 310. The coil 330 can face the magnet 120. The coil 330 can be disposed to face the magnet 120. The coil 330 can electromagnetically interact with the magnet 120. In this case, when a current is supplied to the coil 330 to form an electromagnetic field around the coil 330, the magnet 120 can move relative to the coil 330 by electromagnetic interaction between the coil 330 and the magnet 120.

[0166] The coil 330 can include a plurality of coils. The coil 330 can include two coils. The coil 330 can include four coils. The coil 330 can include a first coil 331 facing the first magnet 121 and a second coil 332 facing the second magnet 122. The coil 330 can include two first coils 331 and two second coils 332. The two first coils 331 can be electrically connected to each other by the substrate 320. Alternatively, the two first coils 331 can be electrically isolated from each other. The two second coils 332 can be electrically connected to each other by the substrate 320. Alternatively, the two second coils 332 can be electrically isolated from each other.

[0167] The coil 330 can include a first coil 331 disposed in a first direction perpendicular to the optical axis direction and a second coil 332 disposed in a second direction perpendicular to the optical axis direction and the first direction. The first coil 331 can move the coil holder 110 in the second direction. The second coil 332 can move the coil holder 110 in the first direction. Alternatively, the first coil 331 can move the coil holder 110 in the first direction. The second coil 332 can move the coil holder 110 in the second direction.

[0168] In the first embodiment of the present application, the magnets 120 and the coils 330 for OIS can be provided in two groups for each direction (OIS-x direction, OIS-y direction). In the first embodiment of the present application, since there is no AF magnet, the aforementioned OIS magnet can be provided. In the first embodiment of the present application, by the aforementioned two-group magnet and coil structure, linearity within the OIS driving region can be improved.

[0169] In the first embodiment of the present application, the coil 330 and the magnet 120 can move the coil holder 110 in a direction perpendicular to the optical axis direction by electromagnetic interaction.

[0170] The lens driving device 10 can include a cover member 340. The stator 300 can include the cover member 340. The cover member 340 can include an "overcoat". The cover member 340 can be disposed outside the housing 210. The cover member 340 can be disposed outside the base 310. The cover member 340 can be coupled to the base 310. The cover member 340 can accommodate the housing 210 therein. The cover member 340 can form an appearance of the lens driving device 10. The cover member 340 can have a hexahedral shape with an open lower surface. The cover member 340 can be a non-magnetic material. The cover member 340 can be formed of a metal material. The cover member 340 can be formed of a metal plate. The cover member 340 can be connected to a ground portion of the printed circuit board 50. Thereby, the cover member 340 can be grounded. The cover member 340 can block electromagnetic interference (EMI). At this time, the cover member 340 can be referred to as an "EMI shield cover".

[0171] The cover member 340 can include an upper plate 341 and a side plate 342. The cover member 340 can include the upper plate 341 having a hole and the side plate 342 extending downward from an outer periphery or edge of the upper plate 341. The lower end of the side plate 342 of the cover member 340 can be disposed at the stepped portion of the base 310. The inner surface of the side plate 342 of the cover member 340 can be fixed to the base 310 by an adhesive.

[0172] The lens driving device 10 can include a shape memory alloy member 400. The shape memory alloy member 400 can connect the stator 300 and the second mover 200. The shape memory alloy member 400 can connect the base 310 and the housing 210. The shape memory alloy member 400 can connect the base plate 320 and the housing 210. The shape memory alloy member 400 can be coupled to a fixed portion and a moving portion. The shape memory alloy member 400 can move the moving portion in the optical axis direction. The shape memory alloy member 400 has both ends connected to the fixed portion and a central region can be connected to the moving portion.

[0173] The shape memory alloy member 400 can be used for AF driving. The shape memory alloy member 400 can move the housing 210 in the optical axis direction. The shape memory alloy member 400 can move the housing 210 in the optical axis direction with respect to the base 310. At this time, the coil holder 110 can be integrally moved with the housing 210. The lens module 20 coupled to the coil holder 110 can also be integrally moved with the housing 210. Thereby, the lens module 20 can be moved in the optical axis direction with respect to the image sensor 60.

[0174] The shape memory alloy member 400 can include a shape memory alloy (SMA). The shape memory alloy can change a shape when an electric current is applied. A length of the shape memory alloy can change when the electric current is applied. The length of the shape memory alloy can decrease when the electric current is applied. The length of the shape memory alloy can elongate when the electric current is applied.

[0175] The shape memory alloy member 400 can include a first unit shape memory alloy member and a second unit shape memory alloy member. The magnet 120 can include a first unit magnet and a second unit magnet. The moving portion can include a first corner region connected to the first unit shape memory alloy member and a second corner region adjacent to the first corner region. The first unit magnet can be disposed adjacent to the second corner region rather than the first corner region. The driving unit can include a first unit driving unit adjacent to the second corner region rather than the first corner region. The moving portion can include a first corner region and a third corner region in a diagonal direction. The second unit shape memory alloy member can be connected to the third corner region of the moving portion. The second unit magnet can be disposed adjacent to the second corner region rather than the third corner region.

[0176] In the first embodiment of the present application, the driving unit can include a first unit driving unit to a fourth unit driving unit. At this time, the first unit driving unit and the second unit driving unit can be disposed adjacent to the second corner region, and the third unit driving unit and the fourth unit driving unit can be disposed adjacent to the fourth corner region. The first unit driving unit can be disposed closer to the second corner region than the first corner region. The second unit driving unit can be disposed closer to the second corner region than the third corner region. The third unit driving unit can be disposed closer to the fourth corner region than the third corner region. The fourth unit driving unit can be disposed closer to the fourth corner region than the first corner region.

[0177] In the first embodiment of the present application, the coil 330 and the magnet 120 can be disposed to be biased toward one of the two corner regions. That is, the coil 330 and the magnet 120 can be eccentrically disposed. Thereby, a space for a predetermined length of the shape memory alloy wire 410 can be secured. Further, a space for a press-fit structure of a terminal of the shape memory alloy wire 410 can be secured.

[0178] In the first embodiment of the present application, the shape memory alloy wire 410 can have the same length on both sides of a portion captured by the bobbin 110. Further, the portion of the bobbin 110 capturing the shape memory alloy wire 410 can be disposed higher than a height center of the bobbin 110. At this time, the height center of the bobbin 110 can be a point bisecting an upper end of the bobbin 110 and a lower end of the bobbin 110.

[0179] The lens driving device 10 can include a shape memory alloy wire 410. The shape memory alloy member 400 can include the shape memory alloy wire 410. One end and the other end of the shape memory alloy wire 410 can be fixed to the base 310. A portion of the shape memory alloy wire 410 between the one end and the other end can be captured by the housing 210. A portion of the shape memory alloy wire 410 can be coupled to the housing 210. The shape memory alloy wire 410 can support the housing 210. The shape memory alloy wire 410 can be disposed not to interfere with the coil 3300. One end and the other end of the shape memory alloy wire 410 can be fixed to the substrate 320. The shape memory alloy wire 410 can pull the housing 210 upward. The shape memory alloy wire 410 can move the housing 210 upward in the optical axis direction. The length of the shape memory alloy wire 410 can decrease when a current is applied. As Figure 14 Illustrated, the shape memory alloy wire 410 can be disposed in a state of a central sag first length (refer to H in FIG. 4) in an initial state in which no current is applied. Figure 14 Thereafter, when a current is applied to the shape memory alloy wire 410, the central portion can move upward so that a sag amount decreases by a second length smaller than the first length.

[0180] The shape memory alloy wire 410 can include a plurality of shape memory alloy wires. The shape memory alloy wire 410 can include two shape memory alloy wires. The two shape memory alloy wires can be disposed symmetrically with respect to the optical axis.

[0181] The shape memory alloy member 400 can include a first fixing portion 411. The shape memory alloy wire 410 can include the first fixing portion 411. The first fixing portion 411 can be fixed to the substrate 320. The first fixing portion 411 can be electrically connected to the substrate 320. The first fixing portion 411 can be an electrically conductive member. The first fixing portion 411 can be electrically connected to the shape memory alloy wire 410. The first fixing portion 411 can be fixed to the base 310.

[0182] The shape memory alloy member 400 can include a second fixing portion 412. The shape memory alloy wire 410 can include the second fixing portion 412. The second fixing portion 412 can be fixed to the substrate 320. The second fixing portion 412 can be electrically connected to the substrate 320. The second fixing portion 412 can be an electrically conductive member. The second fixing portion 412 can be electrically connected to the shape memory alloy wire 410. The second fixing portion 412 can be fixed to the base 310.

[0183] The shape memory alloy member 400 can include a locking portion 413. The shape memory alloy wire 410 can include the locking portion 413. The locking portion 413 is a portion of the shape memory alloy wire 410, and can be a portion captured by the case 210. The locking portion 413 can be formed in a central portion of the shape memory alloy wire 410. The locking portion 413 can be in direct contact with the case 210. The locking portion 413 can be fixed to the case 210. The locking portion 413 can be disposed at a corner region of the case 210.

[0184] The lens driving device 10 can include a support member 500. The support member 500 can connect the coil holder 110 and the case 210. The support member 500 can elastically support the coil holder 110 with respect to the case 210 when the coil holder 110 moves in a direction perpendicular to the optical axis direction. The support member 500 can have elasticity. The support member 500 can include a portion having elasticity. The support member 500 can be elastically restored. The support member 500 can include a non-metallic material. The support member 500 can be non-metallic. The support member 500 can be formed of an injection-molded product. The support member 500 can include an elastomer. The support member 500 can be disposed to have a length longer in the optical axis direction. One end of the support member 500 can be fixed to the coil holder 110, and the other end of the support member 500 can be fixed to the case 210. One end of the support member 500 can be coupled to the coil holder 110, and the other end can be coupled to the moving portion.

[0185] The support member 500 can include regions having different widths. The width of a first portion of the support member 500 can be different from the width of another portion. The support member 500 can include regions having different thicknesses. At this time, the width or the thickness can be a length in a direction perpendicular to the optical axis direction. The width of a peripheral region of the support member 500 can be thicker than a central region. The support member 500 has a head portion and a body portion, and the width of the head portion can be greater than the width of the body portion.

[0186] The support member 500 can have greater strength than a metal wire. The support member 500 can have greater tensile strength than a metal wire.

[0187] In a modified embodiment, the width of the support member 500 can remain constant in the length direction. The support member 500 can have a constant thickness in the length direction.

[0188] In a modified embodiment, an upper surface of the support member 500 is coupled with the coil holder 110, and a lower surface of the support member 500 can be coupled with the case 210. At this time, a concave portion of the support member 500 can be spaced apart from the coil holder 110 and the case 210. The coil holder 110 can include a wing portion protruding from an outer circumferential surface of the coil holder 110, and the upper surface of the support member 500 can be coupled to the wing portion of the coil holder 110. The case 210 can include a wing portion protruding from an inner circumferential surface of the case 210, and the lower surface of the support member 500 can be coupled to the wing portion of the case 210.

[0189] The support member 500 can include a body portion 510. The body portion 510 can be disposed between the first concave portion 520 and the second concave portion 530. The body portion 510 can include a portion that widens as it is distanced from the first concave portion 520 and the second concave portion 530. The body portion 510 can include a first portion, a second portion, and a third portion connecting the first portion and the second portion, and be formed to have a width wider than that of the first portion and the second portion. The body portion 510 can be formed to have a maximum width at a central portion. An outer surface of the body portion 510 can include a curved surface. The outer surface of the body portion 510 can be formed only with the curved surface. The body portion 510 can be formed to have a curvature.

[0190] The support member 500 can include the first concave portion 520. The first concave portion 520 can be formed to have a width narrower than that of the body portion 510. The width of the first concave portion 520 can be a width of the support member 500 in a direction perpendicular to the length direction. The first concave portion 520 of the support member 500 can be coupled to the coil holder 110. The first concave portion 520 can be disposed at a position higher than the second concave portion 530. The first concave portion 520 can be coupled to the groove 111 of the coil holder 110. The first concave portion 520 can be inserted into the groove 111 of the coil holder 110. The first concave portion 520 can be fixed to the groove 111 of the coil holder 110.

[0191] The support member 500 can include the second concave portion 530. The second concave portion 530 can be formed to have a width narrower than that of the body portion 510. The width of the second concave portion 530 can be a width of the support member 500 in a direction perpendicular to the length direction. The second concave portion 530 of the support member 500 can be coupled to the case 210. The second concave portion 530 can be coupled to the groove 211 of the case 210. The second concave portion 530 can be inserted into the groove 211 of the case 210. The second concave portion 530 can be fixed to the groove 211 of the case 210.

[0192] The widths of the concave portions 520 and 530 of the support member 500 can be 10% to 70% of the widths of the fixed portions 540 and 550. The widths of the concave portions 520 and 530 of the support member 500 can be 20% to 40% of the widths of the fixed portions 540 and 550. The concave portions 520 and 530 of the support member 500 can extend from the fixed portions 540 and 550. In a modified embodiment, the concave portions 520 and 530 of the support member 500 can be spaced apart from the coil holder 110 and the case 210.

[0193] The support member 500 can include a first fixed portion 540. The first fixed portion 540 can extend from the first concave portion 520 to an opposite side of the body portion 510. The first fixed portion 540 can be formed to have a width wider than the first concave portion 520. The first fixed portion 540 can be captured at an upper surface of the coil holder 110. The first fixed portion 540 can be fixed to the coil holder 110.

[0194] The support member 500 can include a second fixed portion 550. The second fixed portion 550 can extend from the second concave portion 530 to an opposite side of the body portion 510. The second fixed portion 550 can be formed to have a width wider than the second concave portion 530. The second fixed portion 550 can be captured at a lower surface of the case 210. The second fixed portion 550 can be fixed to the case 210.

[0195] In a modified embodiment, according to the second embodiment of the present application, the lens driving apparatus 10 can include a support member 1500. The support member 1500 can connect the case 210 and the coil holder 110. The support member 1500 can support the coil holder 110 with respect to the case 210 when the coil holder 110 moves in the optical axis direction. The support member 1500 can have elasticity. The support member 1500 can include a portion having elasticity. The support member 1500 can be elastically restored. The support member 1500 can be formed of an elastic body. One end of the support member 1500 can be fixed to the coil holder 110, and the other end of the support member 1500 can be fixed to the case 210. A portion of the support member 1500 can be attached to the coil holder 110. An adhesive can be provided in a groove of the coil holder 110. Another portion of the support member 1500 can be attached to the case 210. An adhesive can be provided in a groove of the case 210.

[0196] Further, in a modified embodiment, the lens driving apparatus 10 can include some configurations of the second embodiment of the present application to replace some configurations of the first embodiment of the present application.

[0197] The lens driving device 10 can include an elastic member 600. The elastic member 600 can have elasticity. The elastic member 600 can include a portion having elasticity. The elastic member 600 can be elastically restored. The elastic member 600 can be disposed in the housing 210. The elastic member 600 can be disposed between the housing 210 and the upper plate 341 of the cover member 340. The elastic member 600 can press the housing 210 downward in the optical axis direction by elasticity. Thereby, the housing 210 can be maintained while being firmly attached to the shape memory alloy wire 410. The elastic member 600 can be a coil spring. At least a portion of the elastic member 600 can be inserted into the groove 217 formed at the upper surface of the housing 210.

[0198] The lens driving device 10 can include a first Hall sensor 701. The first Hall sensor 701 can detect the first magnet 121. The first Hall sensor 701 can detect a magnetic force of the first magnet 121. The first Hall sensor 701 can include a Hall element. The first Hall sensor 701 can be disposed in the substrate 320. The first Hall sensor 701 can be electrically connected to the substrate 320. The first Hall sensor 701 can be disposed inside the first coil 331. The first Hall sensor 701 can detect a motion of the coil holder 110. The first Hall sensor 701 can detect a motion of the coil holder 110 in a first direction perpendicular to the optical axis direction. Or, the first Hall sensor 701 can detect a motion of the coil holder 110 in a second direction perpendicular to the optical axis direction. A position and / or a motion of the coil holder 110 detected by the first Hall sensor 701 can be used for feedback control in OIS driving of the coil holder 110.

[0199] The lens driving device 10 can include a second Hall sensor 702. The second Hall sensor 702 can detect the second magnet 122. The second Hall sensor 702 can include a Hall element. The second Hall sensor 702 can be disposed in the substrate 320. The second Hall sensor 702 can be electrically connected to the substrate 320. The second Hall sensor 702 can be disposed inside the second coil 332. The second Hall sensor 702 can detect a motion of the second magnet 122. The second Hall sensor 702 can detect a motion of the coil holder 110 in a second direction perpendicular to the optical axis direction. Or, the second Hall sensor 702 can detect a motion of the coil holder 110 in a first direction perpendicular to the optical axis direction. The second Hall sensor 702 can detect a motion component in a direction different from a direction detected by the first Hall sensor 701 during a motion of the coil holder 110. A position and / or a motion of the coil holder 110 detected by the second Hall sensor 702 can be used for feedback control in OIS driving of the coil holder 110.

[0200] The lens driving device 10 can include a driver IC 703. The driver IC 703 can control the current applied to the shape memory alloy member 400. The driver IC 703 can be electrically connected to the shape memory alloy member 400. The driver IC 703 can be disposed in the substrate 320. The driver IC 703 can be electrically connected to the substrate 320. The base 310 can include a recess or a hole having a shape corresponding to a shape of the driver IC 703. The driver IC 703 can be disposed in the recess or the hole of the base 310. In a modified embodiment, the driver IC 703 can be disposed in the printed circuit board 50. The driver IC 703 can be electrically connected to the coil 120 to control the current applied to the coil 120.

[0201] The first embodiment of the present application uses an SMA during AF driving and can use a support member formed of a hinge during OIS driving. Thereby, a reliability advantage can be obtained and the reliability advantage can be applied to an actuator driving a large aperture, heavy lens.

[0202] In the first embodiment of the present application, driving can be performed by connecting the housing 210 and the base 310 using the shape memory alloy wire 410. At this time, in order to secure the length of the shape memory alloy wire 410, that is, in order to secure a large stroke, the shape memory alloy wire 410 can be connected to the housing 210 in a 90-degree direction. In the first embodiment of the present application, the magnet 120 can be disposed so that the AF and OIS spaces can be secured.

[0203] Hereinafter, a camera module according to the first embodiment of the present application will be described with reference to the accompanying drawings.

[0204] Figure 18 is an exploded perspective view of a camera device according to the first embodiment of the present application.

[0205] The camera module 10A can include a camera device.

[0206] The camera module 10A can include a lens module 20. The lens module 20 can include at least one lens. The lens can be disposed at a position corresponding to the image sensor 60. The lens module 20 can include a lens and a lens barrel. The lens module 20 can be coupled to the coil holder 110 of the lens driving device 10. The lens module 20 can be coupled to the coil holder 110 by a screw coupling and / or an adhesive coupling. The lens module 20 can move integrally with the coil holder 110.

[0207] The camera module 10A can include a filter 30. The filter 30 can be used to block light of a specific band among light passing through the lens module from being incident on the image sensor 60. The filter 30 can be disposed parallel to the x-y plane. The filter 30 can be disposed between the lens module 20 and the image sensor 60. The filter 30 can be disposed on the sensor base 40. In a modified embodiment, the filter 30 can be seated in the base 310. The filter 30 can include an infrared filter. The infrared filter can block light in an infrared region from being incident on the image sensor 60.

[0208] The camera module 10A can include a sensor base 40. The sensor base 40 can be disposed between the lens driving device 10 and the printed circuit board 50. The sensor base 40 can include a protrusion 41 in which the filter 30 is disposed. An opening can be formed in a portion of the sensor base 40 in which the filter 30 is disposed, so that light passing through the filter 30 can be incident on the image sensor 60. An adhesive member 45 can couple or attach the base 310 of the lens driving device 10 to the sensor base 40. The adhesive member 45 can additionally be used to prevent foreign substances from entering the inside of the lens driving device 10. The adhesive member 45 can include any one or more of an epoxy resin, a thermosetting adhesive, and a UV-cured adhesive.

[0209] The camera module 10A can include a printed circuit board (PCB) 50. The printed circuit board 50 can be a substrate or a circuit board. The lens driving device 10 can be disposed in the printed circuit board 50. The sensor base 40 can be disposed between the printed circuit board 50 and the lens driving device 10. The printed circuit board 50 can be electrically connected to the lens driving device 10. The image sensor 60 can be disposed in the printed circuit board 50. The printed circuit board 50 can include various circuits, elements, control units, etc. to convert an image formed in the image sensor 60 into an electrical signal and transmit it to an external device.

[0210] The camera module 10A can include an image sensor 60. The image sensor 60 can have a configuration in which light is incident through the lens and the optical filter 30 to form an image. The image sensor 60 can be mounted on the printed circuit board 50. The image sensor 60 can be electrically connected to the printed circuit board 50. For example, the image sensor 60 can be coupled to the printed circuit board 50 by surface mount technology (SMT). As another example, the image sensor 60 can be coupled to the printed circuit board 50 by flip chip technology. The image sensor 60 can be disposed so that the lens coincides with the optical axis. That is, the optical axis of the image sensor 60 can be aligned with the optical axis of the lens. The image sensor 60 can convert light radiated to an effective image area of the image sensor 60 into an electrical signal. The image sensor 60 can be any one of a charge-coupled device (CCD), a metal-oxide semiconductor (MOS), a CPD, and a CID.

[0211] The camera module 10A can include a motion sensor 70. The motion sensor 70 can be mounted in the printed circuit board 50. The motion sensor 70 can be electrically connected to the control unit 80 through a circuit pattern disposed on the printed circuit board 50. The motion sensor 70 can output a rotational angular velocity information due to a motion of the camera module 10A. The motion sensor 70 can include a 2-axis or 3-axis gyro sensor or an angular velocity sensor.

[0212] The camera module 10A can include a control unit 80. The control unit 80 can be disposed in the printed circuit board 50. The control unit 80 can be electrically connected to the coil 330 of the lens driving device 10. The control unit 80 can individually control a direction, a strength, and a magnitude of a current supplied to the coil 330. The control unit 80 can control the lens driving device 10 to perform an auto focus function and / or an image stabilization function. In addition, the control unit 80 can perform an auto focus feedback control and / or a hand-shake correction feedback control on the lens driving device 10.

[0213] The camera module 10A can include a connector 90. The connector 90 can be electrically connected to the printed circuit board 50. The connector 90 can include a port for electrical connection to an external device.

[0214] Hereinafter, an optical device according to a first embodiment of the present application will be described with reference to the accompanying drawings.

[0215] Figure 19 is a perspective view illustrating an optical device according to the first embodiment of the present application, and Figure 20 is a block diagram of the optical device according to the first embodiment of the present application.

[0216] The optical device 10B can include a portable terminal. The optical device 10B can be any one of a mobile phone, a mobile terminal, a smart phone, a portable smart device, a digital camera, a laptop computer, a digital broadcasting terminal, a personal digital assistant (PDA), a portable multimedia player (PMP), and a navigation device. However, the type of the optical device 10B is not limited thereto, and any device for photographing a video or a picture can be included in the optical device 10B.

[0217] The optical device 10B can include a body 850. The body 850 can have a bar shape. Alternatively, the body 850 can have various structures such as a sliding type, a folding type, a swing type, a rotating type, etc., in which two or more sub-bodies are coupled to be relatively movable. The body 850 can include a case (an outer case, a housing, and a cover) forming an appearance. For example, the body 850 can include a front case 851 and a rear case 852. Various electronic components of the optical device 10B can be embedded in a space formed between the front case 851 and the rear case 852. A display module 753 can be disposed on one surface of the body 850. The camera 721 can be disposed on one or more of one surface of the body 850 and another surface disposed at the opposite side of the one surface.

[0218] The optical device 10B can include a wireless communication unit 710. The wireless communication unit 710 can include one or more modules that enable wireless communication between the optical device 10B and a wireless communication system or between the optical device 10B and a network in which the optical device 10B is located. For example, the wireless communication unit 710 can include any one or more of a broadcast receiving module 711, a mobile communication module 712, a wireless Internet module 713, a short-range communication module 714, and a location information module 715.

[0219] The optical device 10B can include an A / V input unit 720. The A / V input unit 720 is to input an audio signal or a video signal and can include any one or more of a camera 721 and a microphone 722. At this time, the camera 721 can include the camera module 10A according to the present embodiment.

[0220] The optical device 10B can include a sensing unit 740. The sensing unit 740 can generate a sensing signal for controlling the operation of the optical device 10B by detecting a current state of the optical device 10B, such as an open / close state of the optical device 10B, a position of the optical device 10B, presence or absence of user contact, an orientation of the optical device 10B, acceleration / deceleration of the optical device 10B, etc. For example, when the optical device 10B is in the form of a slide phone, it can be sensed whether the slide phone is open or closed. In addition, the sensing unit 740 can be responsible for sensing functions related to whether the power supply unit 790 is supplied with power, whether the interface unit 770 is coupled to an external device, etc.

[0221] The optical device 10B can include an input / output unit 750. The input / output unit 750 can be configured to generate input or output related to vision, hearing, or touch. The input / output unit 750 can generate input data for controlling the operation of the optical device 10B, and the input / output unit 750 can output information processed by the optical device 10B.

[0222] The input / output unit 750 can include any one or more of a keypad unit 751, a touch screen panel 752, a display module 753, and a sound output module 754. The keypad unit 751 can generate input data in response to a keypad input. The touch screen panel 752 can convert a change in capacitance generated due to a user's touch on a specific area of the touch screen into an electrical input signal. The display module 753 can output an image photographed by the camera 721. The display module 753 can include a plurality of pixels whose colors change according to an electrical signal. For example, the display module 753 can include at least one of a liquid crystal display, a thin film transistor liquid crystal display, an organic light emitting diode, a flexible display, and a 3D display. The sound output module 754 can output audio data received from the wireless communication unit 710 in a call signal reception, a call mode, a recording mode, a voice recognition mode, or a broadcast reception mode, or output audio data stored in the memory unit 760.

[0223] The optical device 10B can include a memory unit 760. Programs for processing and controlling the control unit 780 can be stored in the memory unit 760. In addition, the memory unit 760 can store input / output data, such as any one or more of a phonebook, a message, audio, a still image, a photo, and a moving picture. The memory unit 760 can store an image, such as a photo or a video, photographed by the camera 721.

[0224] The optical device 10B can include an interface unit 770. The interface unit 770 serves as a path for connection to an external device connected with the optical device 10B. The interface unit 770 can receive data from the external device, receive power and transmit the power to each component inside the optical device 10B, or transmit data inside the optical device 10B to the external device. The interface unit 770 can include any one or more of a wired / wireless headset port, an external charger port, a wired / wireless data port, a memory card port, a port for connecting a device equipped with an identification module, and an audio I / O port, a video I / O port, and a headphone port.

[0225] The optical device 10B can include a control unit 780. The control unit 780 can control the overall operation of the optical device 10B. The control unit 780 can perform a control and a process related to a voice call, a data communication, a video call, etc. The control unit 780 can include a display control unit 781 that controls the display module 753 which is a display of the optical device 10B. The control unit 780 can include a camera control unit 782 that controls the camera module. The control unit 780 can include a multimedia module 783 for playing multimedia. The multimedia module 783 can be disposed inside the control unit 180 or can be disposed separately from the control unit 780. The control unit 780 can execute a pattern recognition program capable of recognizing a handwriting input or a drawing input performed on the touch screen as a character and an image, respectively.

[0226] The optical device 10B can include a power supply unit 790. The power supply unit 790 can receive external power or internal power by control of the control unit 780 to supply power required for each component operation.

[0227] Hereinafter, a configuration of a lens driving device according to a second embodiment of the present application will be described with reference to the accompanying drawings.

[0228] Figure 21 is a perspective view of a lens driving device according to the second embodiment of the present application; Figure 22 is a cross-sectional view taken along Figure 21 line A-A of FIG. 10; Figure 23 is a cross-sectional view taken along Figure 21 line B-B of FIG. 10; Figure 24a is a cross-sectional view taken along Figure 21 line C-C of FIG. 10 and is a partially enlarged view;

[0229] Figure 24b is an enlarged view illustrating a coupling structure of a support member and a coil holder according to the second embodiment of the present application; Figure 24cis an enlarged view illustrating a coupling structure of the support member and the case according to the second embodiment of the present application; Figure 24d is a plan view of the support member according to the second embodiment of the present application; Figure 24e is a plan view of the support member according to the second embodiment of the present application; Figure 25 is an exploded perspective view of the lens driving device according to the second embodiment of the present application; Figure 26 is a perspective view illustrating a state in which the cover member of the lens driving device according to the second embodiment of the present application is removed; Figure 27 is a plan view illustrating a state in which the cover member of the lens driving device according to the second embodiment of the present application is removed; Figure 28 is a perspective view illustrating the first mover and the second mover of the lens driving device according to the second embodiment of the present application; Figure 29 is a perspective view illustrating a coupled state of the first mover, the second mover, the elastic member, and the second substrate of the lens driving device according to the second embodiment of the present application; Figure 30 is a perspective view illustrating the first substrate, the second substrate, and the shape memory alloy element of the lens driving device according to the second embodiment of the present application; Figure 31a is a view for explaining driving of the shape memory alloy element of the lens driving device according to the second embodiment of the present application; Figure 31b is a view illustrating a coupling structure of the shape memory alloy element and the case according to the second embodiment of the present application; Figure 32 is a side view illustrating a state in which the cover member of the lens driving device according to the second embodiment of the present application is removed; Figure 33 is a view for explaining the case, the support member, and the related structure of the lens driving device according to the second embodiment of the present application; and Figure 34 is a view for explaining a coupling structure of the shape memory alloy element of the lens driving device according to the second embodiment of the present application.

[0230] The lens driving device 1010 can be a voice coil motor (VCM). The lens driving device 1010 can be a lens driving motor. The lens driving device 1010 can be a lens driving actuator. The lens driving device 1010 can include an AF module. The lens driving device can include an OIS module.

[0231] The lens driving device 1010 can include a first mover 1100. The first mover 1100 can be coupled with the lens. The first mover 1100 can be coupled to the second mover 1200 through the support member 1500. The first mover 1100 can move by interaction with the second mover 1200. At this time, the first mover 1100 can move integrally with the lens. Meanwhile, the first mover 1100 can move during AF driving. At this time, the first mover 1100 can be referred to as an "AF mover". However, the first mover 1100 can move together with the second mover 1200 even during OIS driving.

[0232] The lens driving device 1010 can include a coil holder 1110. The first mover 1100 can include the coil holder 1110. The coil holder 1110 can be disposed inside the housing 1210. The coil holder 1110 can be disposed in the hole of the housing 1210. The coil holder 1110 can be movably coupled to the housing 1210. The coil holder 1110 can move in the optical axis direction inside the housing 1210. The coil holder 1110 can move in the optical axis direction by the coil 1220 and the magnet 1120. The lens can be coupled to the coil holder 1110. The coil holder 1110 and the lens can be coupled by a thread coupling and / or an adhesive. The magnet 1120 can be disposed in the coil holder 1110. Alternatively, in a modified embodiment, the coil 1220 can be disposed in the coil holder 1110.

[0233] The coil holder 1110 can include a recess 1111. The recess 1111 can be formed at the outer surface of the coil holder 1110. The recess 1111 of the coil holder 1110 can extend from the upper surface of the coil holder 1110. The upper surface of the recess 1111 of the coil holder 1110 can be open. The recess 1111 of the coil holder 1110 can be open toward the upper surface of the coil holder 1110. The outer side of the recess 1111 of the coil holder 1110 can be open. The recess 1111 of the coil holder 1110 can be open toward the outer side of the coil holder 1110. The recess 1111 of the coil holder 1110 can include a bottom surface facing upward. The first fixing portion 1510 of the support member 1500 can be disposed at the bottom surface of the recess 1111 of the coil holder 1110.

[0234] The coil holder 1110 can include locking jaws 1112. The locking jaws 1112 can be formed so that the first fixed portion 1510 of the support member 1500 is captured. The locking jaws 1112 can provide a space formed to have a width smaller than a width of the first fixed portion 1510 of the support member 1500. The connection portion 1530 of the support member 1500 can pass through the space between the locking jaws 1112. The locking jaws 1112 can include two jaws spaced apart from each other. A spacing space can be provided between the two jaws. The spacing space can have a width smaller than a width of the first fixed portion 1510 of the support member 1500 in a corresponding direction. The spacing space can be formed as a groove or a hole. The groove 1111 of the coil holder 1110 can include the locking jaws 1112 spaced apart from each other by a width smaller than a width of the first fixed portion 1510 so that the first fixed portion 1510 is captured.

[0235] The lens driving device 1010 can include a magnet 1120. The first mover 1100 can include the magnet 1120. The magnet 1120 can be disposed in the coil holder 1110. Alternatively, in a modified embodiment, the magnet 1120 can be disposed in the housing 1210. In this case, the coil 1220 can be disposed in the coil holder 1110. The magnet 1120 can be disposed at an outer side surface or an outer circumferential surface of the coil holder 1110. The magnet 1120 can be fixed to the coil holder 1110 by an adhesive. The magnet 1120 can be disposed between the coil holder 1110 and the housing 1210. The magnet 1120 can face the coil 1220. The magnet 1120 can electromagnetically interact with the coil 1220. The magnet 1120 can move the coil holder 1110 in the optical axis direction by interaction with the coil 1220. The magnet 1120 can be used for AF driving. The magnet 1120 can be disposed at a side surface of the coil holder 1110. The magnet 1120 can be a flat magnet having a flat plate shape.

[0236] The magnet 1120 can include a plurality of magnets. The magnet 1120 can include a first magnet disposed at a first side surface of the coil holder 1110 and a second magnet disposed on a second side surface of the coil holder 1110 opposite the first side surface. The first magnet and the second magnet can be spaced apart from each other.

[0237] The lens driving device 1010 can include a second mover 1200. The second mover 1200 can be movably coupled to the stator 1300 through the elastic member 1600 and the support member 1700. The second mover 1200 can support the first mover 1100 through the support member 1500. The second mover 1200 can move the first mover 1100 or can move together with the first mover 1100. The second mover 1200 can move by interaction with the stator 1300. The second mover 1200 can move during OIS driving. At this time, the second mover 1200 can be referred to as an "OIS mover". The second mover 1200 can move integrally with the first mover 1100 during OIS driving.

[0238] The lens driving device 1010 can include a housing 1210. The second mover 1200 can include the housing 1210. The housing 1210 can be spaced apart from the base 1310. The housing 1210 can be disposed outside the coil holder 1110. The housing 1210 can accommodate at least a portion of the coil holder 1110. The housing 1210 can be disposed inside the cover member 1340. The housing 1210 can be disposed between the cover member 1340 and the coil holder 1110. The housing 1210 can be formed of a material different from that of the cover member 1340. The housing 1210 can be formed of an insulating material. The housing 1210 can be formed of an injection-molding material. The outer side of the housing 1210 can be spaced apart from the inner surface of the side plate 1342 of the cover member 1340. Through the space between the housing 1210 and the cover member 1340, the housing 1210 can move for OIS operation. The coil 1220 can be disposed in the housing 1210. The housing 1210 and the coil 1220 can be coupled by an adhesive.

[0239] The housing 1210 can include four side portions and four corner portions disposed between the four side portions. The side portions of the housing 1210 can include a first side portion, a second side portion disposed at the opposite side of the first side portion, and a third side portion and a fourth side portion disposed at opposite sides of each other between the first side portion and the second side portion. The corner portions of the housing 1210 can include a first corner portion disposed between the first side portion and the third side portion, a second corner portion disposed between the first side portion and the fourth side portion, a third corner portion disposed between the second side portion and the third side portion, and a fourth corner portion disposed between the second side portion and the fourth side portion. The side portions of the housing 1210 can include "side walls".

[0240] The housing 1210 can include a recess 1211. The recess 1211 can be formed at an inner surface of the housing 1210. The recess 1211 of the housing 1210 can extend from an upper surface of the housing 1210. An upper surface of the recess 1211 of the housing 1210 can be open. The recess 1211 of the housing 1210 can be open toward the upper surface of the housing 1210. An outer side of the recess 1211 of the housing 1210 can be open. The recess 1211 of the housing 1210 can be open toward the outer side. The recess 1211 of the housing 1210 can include a bottom surface facing upward. The second fixing portion 1520 of the support member 1500 can be disposed at the bottom surface of the recess 1211 of the housing 1210.

[0241] The housing 1210 can include a locking jaw 1212. The locking jaw 1212 can be formed to capture the second fixing portion 1520 of the support member 1500. The locking jaw 1212 can provide a space formed to have a width smaller than a width of the second fixing portion 1520 of the support member 1500. The connection portion 1530 of the support member 1500 can pass through the interval space between the locking jaws 1212. The locking jaw 1212 can include two jaws spaced apart from each other. An interval space can be provided between the two jaws. The width of the interval space can be smaller than the width of the second fixing portion 1520 of the support member 1500 in the corresponding direction. The interval space can be formed as a recess or a hole. The recess 1211 of the housing 1210 can include the locking jaws 1212 spaced apart from each other by a width smaller than the width of the second fixing portion 1520, so that the second fixing portion 1520 is captured.

[0242] The housing 1210 can include an upper stopper 1213. The upper stopper 1213 can protrude from an upper surface of the housing 1210. The upper stopper 1213 can be formed at the upper surface of the housing 1210. The upper stopper 1213 can overlap the upper plate 1341 of the cover member 1340 in the optical axis direction. The upper stopper 1213 can form the uppermost end of the housing 1210. Thereby, when the housing 1210 moves upward, the upper stopper 1213 can come into contact with the upper plate 1341 of the cover member 1340. That is, the upper stopper 1213 can limit the upward movement of the housing 1210.

[0243] The housing 1210 can include a side stopper 1214. The side stopper 1214 can protrude from an outer surface of the housing 1210. The side stopper 1214 can face an inner surface of the side plate 1342 of the cover member 1340. When the housing 1210 moves laterally, the side stopper 1214 can come into contact with the side plate 1342 of the cover member 1340. That is, the side stopper 1214 can physically limit the travel of the housing 1210 toward the lateral direction.

[0244] The lens driving device 1010 can include a coil 1220. The second mover 1200 can include the coil 1220. The coil 1220 can be an "AF driving coil" for AF driving. The coil 1220 can be disposed in the housing 1210. Alternatively, in a modified embodiment, the coil 1220 can be disposed in the coil holder 1110. In this case, the magnet 1120 can be disposed in the housing 1210. The coil 1220 can be disposed between the coil holder 1110 and the housing 1210. The coil 1220 can be disposed at an inner side surface or an inner circumferential surface of the housing 1210. The coil 1220 can be directly wound on the housing 1210. Alternatively, the coil 1220 can be coupled to the housing 1210 in a directly wound state. The coil 1220 can face the magnet 1120. The coil 1220 can be disposed to face the magnet 1120. The coil 1220 can electromagnetically interact with the magnet 1120. In this case, when current is supplied to the coil 1220 to form an electromagnetic field around the coil 1220, the magnet 1120 can move relative to the coil 1220 by electromagnetic interaction between the coil 1220 and the magnet 1120. The coil 1220 can be formed as a single coil.

[0245] The coil 1220 can include a plurality of coils. The coil 1220 can include a first coil facing a first magnet and a second coil facing a second magnet. The coil 1220 can include a connection coil connecting the first coil and the second coil. The coil 1220 can be electrically connected to the second substrate 1330 by the first elastic member 1601 and the second elastic member 1602. The coil 1220 can receive power from the second substrate 1330 through the elastic member 1600.

[0246] The lens driving device 1010 can include a stator 1300. The stator 1300 can be disposed below the first mover 1200 and the second mover 1300. The stator 1300 can movably support the second mover 1200. The stator 1300 can move the second mover 1200. At this time, the first mover 1100 can also move together with the second mover 1200.

[0247] The lens driving device 1010 can include a base 1310. The stator 1300 can include the base 1310. The base 1310 can be disposed below the housing 1210. The base 1310 can be disposed below the first substrate 1320. The first substrate 1320 can be disposed at an upper surface of the base 1310. The base 1310 can be coupled to a cover member 1340. The base 1310 can be disposed on the printed circuit board 1050.

[0248] The base 1310 can include a body portion 1311. The body portion 1311 can be disposed between the housing 1210 and the printed circuit board 1050. The body portion 1311 can be disposed in a direction perpendicular to the optical axis direction. The base 1310 can include a side wall portion 1312. The side wall portion 1312 can protrude from an upper surface of the body portion 1311. The side wall portion 1312 can protrude upward from the body portion 1311. The side wall portion 1312 can house the housing 1210 therein.

[0249] The lens driving device 1010 can include a first substrate 1320. The stator 1300 can include the first substrate 1320. The first substrate 1320 can be disposed in the base 1310. The first substrate 1320 can be disposed between the base 1310 and the housing 1210. The first substrate 1320 can be disposed at an upper surface of the base 1310. The first substrate 1320 can be coupled to a second substrate 1330 which is soldered to the printed circuit board 1050 and disposed below the base 1310. Alternatively, the first substrate 1230 and the second substrate 1330 can be integrally formed. In this case, the first substrate 1320 can include a flexible printed circuit board (FPCB). The first substrate 1320 can be partially bent.

[0250] The first substrate 1320 can include a terminal 1321. The terminal 1321 can be formed at a side surface of the first substrate 1320. The terminal 1321 of the first substrate 1320 can be coupled to the second substrate 1330. The terminal 1321 of the first substrate 1320 can be coupled to the second terminal 1332 of the second substrate 1330. The terminal 1321 of the first substrate 1320 can be electrically connected to the second terminal 1332 of the second substrate 1330 by solder or conductive epoxy.

[0251] The terminal 1321 of the first substrate 1320 can include: first to fourth terminals 1321, 1322, 1323, and 1324 connected to each of the first to fourth shape memory alloy wires 1431, 1432, 1433, and 1434; and a fifth terminal 1325 commonly connected to the first to fourth shape memory alloy wires 1431, 1432, 1433, and 1434. At this time, a positive (+) current can be applied to the first to fourth terminals 1321, 1322, 1323, and 1324, and a negative (-) current can be applied to the fifth terminal 1325. Conversely, a negative (-) current can be applied to the first to fourth terminals 1321, 1322, 1323, and 1324, and a positive (+) current can be applied to the fifth terminal 1325.

[0252] The first substrate 1320 can include terminals 1327. The terminals 1327 can be disposed at the upper surface of the first substrate 1320. The terminals 1327 can be coupled to the conductive wires 1440. The terminals 1327 can be coupled to the conductive wires 1440 by solder and / or conductive epoxy. The terminals 1327 can include four terminals.

[0253] The lens driving device 1010 can include a second substrate 1330. The stator 1300 can include the second substrate 1330. The second substrate 1330 can be disposed at the side surface of the base 1310. The second substrate 1330 can be electrically connected to the first substrate 1320. The second substrate 1330 can be electrically connected to the shape memory alloy member 1400. The second substrate 1330 can be electrically connected to the coil 1220. The second substrate 1330 can be electrically connected to the printed circuit board 1050.

[0254] The second substrate 1330 can include first terminals 1331. The first terminals 1331 can be disposed at the outer surface of the second substrate 1330. The first terminals 1331 can be formed at the lower end of the second substrate 1330. The first terminals 1331 of the second substrate 1330 can be coupled to the terminals of the printed circuit board 1050. The first terminals 1331 can include a plurality of terminals. The first terminals 1331 can include seven terminals. Two of the seven terminals can be electrically connected to the coil 1220. Five of the seven terminals can be electrically connected to the shape memory alloy wire 1430.

[0255] The second substrate 1330 can include second terminals 1332. The second terminals 1332 can be disposed at the inner surface of the second substrate 1330. The second terminals 1332 can be formed below the second substrate 1330. The second terminals 1332 can be disposed at a height corresponding to the first substrate 1320. The second terminals 1332 of the second substrate 1330 can be coupled to the terminals 1321 of the first substrate 1320. The second terminals 1332 can include a plurality of terminals. The second terminals 1332 can include five terminals. The five terminals can be connected to the first terminal to the fifth terminal 1322, 1323, 1324, 1325, and 1326 of the first substrate 1320, respectively.

[0256] The lens driving device 1010 can include a cover member 1340. The stator 1300 can include the cover member 1340. The cover member 1340 can include a "cover". The cover member 1340 can be disposed outside the housing 1210. The cover member 1340 can be coupled to the base 1310. The cover member 1340 can be coupled to the base 1310. The cover member 340 can house the housing 1210 therein. The cover member 1340 can form an appearance of the lens driving device 1010. The cover member 1340 can have a hexahedral shape with an open lower surface. The cover member 1340 can be of a non-magnetic material. The cover member 1340 can be formed of a metal material. The cover member 1340 can be formed of a metal plate. The cover member 1340 can be connected to a ground portion of the printed circuit board 1050. Thereby, the cover member 1340 can be grounded. The cover member 1340 can block electromagnetic interference (EMI). At this time, the cover member 1340 can be referred to as an "EMI shield cover".

[0257] The cover member 1340 can include an upper plate 1341 and a side plate 1342. The cover member 1340 can include the upper plate 1341 having a hole and the side plate 1342 extending downward from an outer circumference or edge of the upper plate 1341. The lower end of the side plate 1342 of the cover member 1340 can be disposed at the stepped portion of the base 1310. The inner surface of the side plate 1342 of the cover member 1340 can be fixed to the base 1310 by an adhesive.

[0258] The upper plate 1341 of the cover member 1340 can include a hole. The hole can include an "opening". The hole can be formed in the upper plate 1341 of the cover member 1340. The lens can be seen through the hole when viewed from above. The hole can be formed in a size and shape corresponding to the lens. The size of the hole can be greater than the diameter of the lens module 1020 so that the lens module 1020 can be inserted and assembled through the hole. Light introduced through the hole can pass through the lens. At this time, the light passing through the lens can be converted into an electrical signal in the image sensor 1060 and obtained as an image.

[0259] The lens driving device 1010 can include a shape memory alloy member 1400. The shape memory alloy member 1400 can connect the housing 1210 and the first substrate 1320. The shape memory alloy member 1400 can connect the base 1310 and the housing 1210. The shape memory alloy member 1400 can connect the stator 1300 and the second mover 1200. Alternatively, the shape memory alloy member 1400 can connect the stator 1300 and the first mover 1100. The shape memory alloy member 1400 can connect the base 1310 and the coil holder 1110.

[0260] The shape memory alloy member 1400 can be used for OIS driving. The shape memory alloy member 1400 can move the housing 1210 with respect to the base 1310 in a direction perpendicular to an optical axis direction. At this time, the coil holder 1110 can be integrally moved with the housing 1210. The lens module 1020 coupled to the coil holder 1110 can also be integrally moved with the housing 1210. Thereby, the lens module 1020 can be moved with respect to the image sensor 1060 in a direction perpendicular to the optical axis direction.

[0261] The shape memory alloy member 1400 can include a shape memory alloy (SMA). The shape memory alloy can change a shape when a current is applied. A length of the shape memory alloy can change when the current is applied. The length of the shape memory alloy can decrease when the current is applied. The length of the shape memory alloy can elongate when the current is applied.

[0262] The shape memory alloy member 1400 can include a first coupling portion 1420. The first coupling portion 1420 is a portion that moves with the housing 1210 and can be a "moving portion". The first coupling portion 1420 can be coupled to the housing 1210. The first coupling portion 1420 can be fixed to the housing 1210. The first coupling portion 1420 can include a metal. The first coupling portion 1420 can include a portion formed of an electrically conductive material. The first coupling portion 1420 can include a plurality of first coupling portions. The first coupling portion 1420 can include two first coupling portions. The two first coupling portions can be disposed opposite each other with respect to the optical axis. Each of the two first coupling portions can include two wires. Each of the two first coupling portions can include a first wire and a second wire. Each of the first wire and the second wire can be electrically connected to the shape memory alloy wire 1430.

[0263] The shape memory alloy member 1400 can include a second coupling portion 1410. The second coupling portion 1410 is a portion that maintains a fixed state together with the first base plate 1320 and can be a "fixed portion". The second coupling portion 1410 as the fixed portion can allow the first coupling portion 1420 and the housing 1210 to move as a moving portion with respect to the first base plate 1320. The second coupling portion 1410 can be coupled to the first base plate 1320. The second coupling portion 1410 can be fixed to the first base plate 1320. The second coupling portion 1410 can be coupled to the base 1310. The coupling portion 1410 can be fixed to the base 1310. The second coupling portion 1410 can include a metal. The second coupling portion 1410 can include a portion formed of an electrically conductive material. The second coupling portion 1410 can include a plurality of second coupling portions. The second coupling portion 1410 can include two second coupling portions. The two second coupling portions can be disposed opposite each other with respect to the optical axis. The first coupling portion 1420 can be disposed at two of the four corners of the base 1310, and the second coupling portion 1410 can be disposed at the remaining two corners. Each of the two second coupling portions can include two wires. Each of the two second coupling portions can include a first wire and a second wire. Each of the first wire and the second wire can electrically connect the shape memory alloy wire 1430 and the first base plate 1320.

[0264] The shape memory alloy member 1400 can include a shape memory alloy wire 1430. The shape memory alloy wire 1430 can connect the first coupling portion 1420 and the second coupling portion 1410. The length of the shape memory alloy wire 1430 can change when a current is applied. The shape memory alloy wire 1430 can include a shape memory alloy (SMA). The shape memory alloy wire 1430 can be formed of a shape memory alloy (SMA). The shape of the shape memory alloy wire 1430 can change when a current is applied. The length of the shape memory alloy wire 1430 can change when a current is applied. The length of the shape memory alloy wire 1430 can decrease when a current is applied. The length of the shape memory alloy wire 1430 can elongate when a current is applied.

[0265] The shape memory alloy wire 1430 can include a plurality of shape memory alloy wires. The shape memory alloy wire 1430 can include four shape memory alloy wires. The shape memory alloy wire 1430 can include first to fourth shape memory alloy wires 1431, 1432, 1433, and 1434. The first shape memory alloy wire 1431 and the second shape memory alloy wire 1432 can be disposed in a first direction perpendicular to the optical axis direction. The third shape memory alloy wire 1433 and the fourth shape memory alloy wire 1434 can be disposed in the optical axis direction and a second direction perpendicular to the first direction. With this structure, the first shape memory alloy wire 1431 and the second shape memory alloy wire 1432 can be used to move the first mover 1100 and the second mover 1200 in the first direction perpendicular to the optical axis direction. Also, the third shape memory alloy wire 1433 and the fourth shape memory alloy wire 1434 can be used to move the first mover 1100 and the second mover 1200 in the optical axis direction and the second direction perpendicular to the first direction.

[0266] As an example, as illustrated in FIG. 31, when a current is applied to the third shape memory alloy wire 1433, the length of the third shape memory alloy wire 1433 is shortened (see a in FIG. 31), and as the length of the fourth shape memory alloy wire 1434 is increased (see b in FIG. 31), the first mover 1100 and the second mover 1200 can move in one of the second directions which are the length directions of the third shape memory alloy wire 1433 and the fourth shape memory alloy wire 1434 (see c in FIG. 31). Conversely, when a current is applied to the fourth shape memory alloy wire 1434, the length of the fourth shape memory alloy wire 1434 is shortened, and as the length of the third shape memory alloy wire 1433 is increased, the first mover 1100 and the second mover 1200 can move to the other side of the second direction which is the length direction of the third shape memory alloy wire 1433 and the fourth shape memory alloy wire 1434.

[0267] Similarly, when a current is applied to the first shape memory alloy wire 1431, the length of the first shape memory alloy wire 1431 is shortened, and as the length of the second shape memory alloy wire 1432 is increased, the first mover 1100 and the second mover 1200 can move in one of the first directions which are the length directions of the first shape memory alloy wire 1431 and the second shape memory alloy wire 1432. Conversely, when a current is applied to the second shape memory alloy wire 1432, the length of the second shape memory alloy wire 1432 is shortened, and as the length of the first shape memory alloy wire 1431 is increased, the first mover 1100 and the second mover 1200 can move to the other side of the first direction which is the length direction of the first shape memory alloy wire 1431 and the second shape memory alloy wire 1432.

[0268] The shape memory alloy member 1400 can include a conductive wire 1440. The conductive wire 1440 can connect the first coupling portion 1420 and the first substrate 1320. The conductive wire 1440 can electrically connect the first coupling portion 1420 and the first substrate 1320. The conductive wire 1440 can be coupled to the terminal 1327 of the first substrate 1320. The conductive wire 1440 can include a plurality of conductive wires. The conductive wire 1440 can include two conductive wires. Each of the two conductive wires can include two wires. The wires can be formed on a surface of the conductive wire. The two wires can be spaced apart from each other. The conductive wire 1440 can have elasticity. The conductive wire 1440 can be formed of an elastic member.

[0269] The lens driving device 1010 can include a support member 1500. The support member 1500 can connect the housing 1210 and the coil holder 1110. The support member 1500 can support the coil holder 1110 with respect to the housing 1210 when the coil holder 1110 moves in the optical axis direction. The support member 1500 can have elasticity. The support member 1500 can include a portion having elasticity. The support member 1500 can be elastically restored. The support member 1500 can be formed of an elastic body. One end of the support member 1500 can be fixed to the coil holder 1110, and the other end of the support member 1500 can be fixed to the housing 1210. A portion of the support member 1500 can be attached to the coil holder 1110. An adhesive can be disposed in the groove 1111 of the coil holder 1110. Another portion of the support member 1500 can be attached to the housing 1210. An adhesive can be disposed in the groove 1211 of the housing 1210.

[0270] The support member 1500 can include a first fixing portion 1510. The first fixing portion 1510 can be fixed inside the groove 1111 of the coil holder 1110. The first fixing portion 1510 can be formed to have a width corresponding to the groove 1111 of the coil holder 1110. The first fixing portion 1510 can be fixed to the coil holder 1110 by an adhesive. The first fixing portion 1510 can be inserted into the groove 1111 of the coil holder 1110 from the upper side. The first fixing portion 1510 can be disposed at a bottom surface of the groove 1111 of the coil holder 1110.

[0271] The support member 1500 can include a second fixing portion 1520. The second fixing portion 1520 can be fixed inside the groove 1211 of the case 1210. The second fixing portion 1520 can be formed to have a width corresponding to the groove 1211 of the case 1210. The second fixing portion 1520 can be fixed to the case 1210 by an adhesive. The second fixing portion 1520 can be inserted into the groove 1211 of the case 1210 from the upper side. The second fixing portion 1520 can be disposed at a bottom surface of the groove 1211 of the case 1210.

[0272] The support member 1500 can include a connection portion 1530. The connection portion 1530 can connect the first fixing portion 1510 and the second fixing portion 1520. The connection portion 1530 can be formed to have a width smaller than that of the first fixing portion 1510 and the second fixing portion 1520 at portions connected to the first fixing portion 1510 and the second fixing portion 1520. At this time, the width of the connection portion 1530 can be a length in a direction perpendicular to a length direction of the connection portion 1530. The connection portion 1530 can include a first portion 1540 connected to the first fixing portion 1510 and having a width smaller than that of the first fixing portion 1510. The connection portion 1530 can include a second portion 1550 connected to the second fixing portion 1520 and having a width smaller than that of the second fixing portion 1520. The first portion 1540 and the second portion 1550 of the connection portion 1530 can be hinge portions. The first portion 1540 and the second portion 1550 of the connection portion 1530 can be bent when the coil holder 1110 moves. The first portion 1540 of the connection portion 1530 can be a first hinge portion, and the second portion 1550 can be a second hinge portion.

[0273] The connection portion 1530 can include a portion whose width increases as it moves away from the first fixing portion 1510 and the second fixing portion 1520. The connection portion 1530 can include a third portion connecting the first portion 1540 and the second portion 1550 and formed to have a width wider than that of the first portion 1540 and the second portion 1550. The connection portion 1530 can be formed to have the greatest width in a central portion. An outer surface of the connection portion 1530 can include a curved surface. The outer surface of the connection portion 1530 can be formed only with the curved surface. The connection portion 1530 can be formed to have a curvature.

[0274] In Figure 24e In the modified embodiment illustrated in (a), the support member 1500a can extend from the first fixing portion 1510 to the second fixing portion 1520 of the connection portion 1530a having a constant width or diameter.

[0275] InFigure 24e In the modified embodiment of (b) illustrated above, the support member 1500b can include a cylindrical connecting portion 1530b. The cylindrical shape can connect a first portion 1540 and a second portion 1550 having a width smaller than the width of the first fixed portion 1510 and the second fixed portion 1520.

[0276] In the modified embodiment of (c) illustrated above, the support member 1500c can include a groove 1560 formed in the connecting portion 1530c. The groove 1560 can be formed between the first portion 1540 and the second portion 1550 having a width smaller than the width of the first fixed portion 1510 and the second fixed portion 1520. Figure 24e

[0277] In the modified embodiment, the lens driving device 1010 can include the support member 500 of the first embodiment of the present application. The support member 500 can connect the coil bobbin 1110 and the housing 1210. The support member 500 can elastically support the coil bobbin 1110 with respect to the housing 1210 when the coil bobbin 1110 moves in a direction perpendicular to the optical axis direction. The support member 500 can have elasticity. The support member 500 can include a portion having elasticity. The support member 500 can elastically recover. The support member 500 can include a non-metallic material. The support member 500 can be non-metallic. The support member 500 can be formed of an injection-molded product. The support member 500 can include an elastomer. The length of the support member 500 in the optical axis direction can be long. One end of the support member 500 can be fixed to the coil bobbin 1110 and the other end of the support member 500 can be fixed to the housing 1210. One end of the support member 500 can be coupled to the coil bobbin 1110 and the other end can be coupled to the moving portion.

[0278] Further, in the modified embodiment, the lens driving device 1010 can include some configurations of the first embodiment of the present application to replace some configurations of the second embodiment of the present application.

[0279] The lens driving device 1010 can include an elastic member 1600. The elastic member 1600 can connect the base 1310 and the housing 1210. The elastic member 1600 can be coupled to the base 1310 and the housing 1210. The elastic member 1600 can be coupled to the upper surface of the base 1310 and the upper surface of the housing 1210. The elastic member 1600 can at least partially have elasticity. The elastic member 1600 can be formed of metal. The elastic member 1600 can be formed of an electrically conductive material. The elastic member 1600 can elastically support the housing 1210. The elastic member 1600 can movably support the housing 1210.​

[0280] The elastic member 1600 may include multiple elastic members. The elastic member 1600 may include two elastic members. The elastic member 1600 may include a first elastic member 1601 and a second elastic member 1602 spaced apart from each other. The elastic member 1600 may be electrically connected to the second substrate 1330 and the coil 1220.

[0281] The elastic member 1600 may include: an inner portion 1610 connected to the housing 1210; an outer portion 1620 connected to the base 1310; and a connecting portion 1630 connecting the inner portion 1610 and the outer portion 1620. In a second embodiment of the invention, the inner portion 1610 may be positioned higher than the outer portion 1620. With this structure, the elastic member 1600 can press the housing 1210 downwards. Thus, the housing 1210 can maintain contact with the support member 1700. The elastic member 1600 can press the housing 1210 in a direction toward the support member 1700. Figure 33 As shown, the height of the inner portion 1610 of the elastic member 1600 can be set to be a predetermined distance higher than the height of the outer portion 1620 of the elastic member 1600 (see [reference]). Figure 32 and Figure 33 (D in the text). Thus, the downward pressure generated by the elastic force of the elastic member 1600 can be applied to the housing 1210 connected to the inner portion 1610 of the elastic member 1600.

[0282] The lens driving device 1010 may include a support member 1700. The support member 1700 may be disposed between the housing 1210 and the base 1310. The support member 1700 may also be disposed between the housing 1210 and the first substrate 1320. When the housing 1210 moves in a direction perpendicular to the optical axis, the support member 1700 may contact the housing 1210. This reduces the frictional force generated when the housing 1210 moves in a direction perpendicular to the optical axis. The support member 1700 is formed in a cylindrical shape, and one side may be fixed to the first substrate 1320 or the base 1310. In this case, the other side of the support member 1700 may contact the housing 1210. As a modified embodiment, the support member 1700 may be formed in a spherical shape. In this case, a groove or hole may be provided for fixing the spherical support member 1700 to the first substrate 1320 or the base 1310.

[0283] In a second embodiment of the invention, a groove may be formed on the outer surface of at least one of the coil holder 1110 and the housing 1210. In this case, the support member 1500 may include a fixing portion fixed inside the groove of the coil holder 1110 and / or the housing 1210. The fixing portion of the support member 1500 may be inserted into the groove of the coil holder 1110 and / or the housing 1210.

[0284] The lens driving device according to the second embodiment of the present application can use a hinge when driving AF, and can use an SMA wire when driving OIS. In this case, there is a reliability advantage, and the reliability advantage can be applied to an actuator of a large aperture, a large weight.

[0285] In the second embodiment of the present application, AF driving can be controlled by being connected to injection-molded members. The injection-molded members can be balanced by fixing in four directions. Electromagnetic force for AF driving can be ensured by driving two magnets and coils.

[0286] The coil holder 1110 can be a lens holder. The coil holder 1110 and the housing 1210 can be connected and controlled by a support member 1500, which is a plurality of injection-molded members. AF driving can be driven up and down by electromagnetic force generated in the coil 1220 facing the magnet 1120. At this time, the magnet 1120 and the coil 1220 can be balanced and used in a complex form.

[0287] The second coupling portion 1410 can be a fixed portion, and the first coupling portion 1420 can be a driving unit. The fixed portion can be fixed to the base 1310, and the driving unit can be fixed to the housing 1210. In the second embodiment of the present application, OIS driving can be performed according to SMA characteristics, the length of which changes according to temperature. For example, when one SMA wire is shortened and the opposite SMA wire is lengthened, the second mover 1200 can move in the same direction.

[0288] The coil 1220 can be connected to the second substrate 1330, which is a PCB, using an elastic member 1600. The elastic member 1600 can be fixed to the housing 1210 and the substrate 1310. The end of each of the four shape memory alloy wires 1430 connected to the second coupling portion 1410, which is a fixed portion, is connected to the first substrate 1320 and can be configured to have one terminal. The end of each of the four shape memory alloy wires 1430 connected to the first coupling portion 1420, which is a driving unit, can be connected to the first substrate 1320 through a PCB pattern or a conductive wire 1440, and can be configured to have four terminals through each pattern.

[0289] In the second embodiment of the present application, a height difference is formed between the elastic members 1600 fixed to the base 1310 and the housing 1210, so that the second mover 1200, which is an OIS body, can be maintained in a downward direction by the restoring force of the elastic members 1600 toward the support 1700. The elastic members 1600 can be springs.

[0290] In addition, the conductive wire 1440 located below the housing 1210 can also maintain the second mover 1200 in the downward direction by the restoring force. The conductive wire 1440 can be an elastic body for a wire control signal.

[0291] Hereinafter, a camera module according to a second embodiment of the present application will be described with reference to the accompanying drawings.

[0292] Figure 35 is an exploded perspective view of a camera device according to the second embodiment of the present application.

[0293] The camera module 1010A can include a camera device.

[0294] The camera module 1010A can include a lens module 1020. The lens module 1020 can include at least one lens. The lens can be disposed at a position corresponding to the image sensor 1060. The lens module 1020 can include a lens and a lens barrel. The lens module 1020 can be coupled to the coil holder 1110 of the lens driving device 1010. The lens module 1020 can be coupled to the coil holder 1110 by a thread coupling and / or an adhesive coupling. The lens module 1020 can move integrally with the coil holder 1110.

[0295] The camera module 1010A can include a filter 1030. The filter 1030 can be used to block light of a specific band of light passing through the lens module 1020 from being incident on the image sensor 1060. The filter 1030 can be disposed parallel to the x-y plane. The filter 1030 can be disposed between the lens module 1020 and the image sensor 1060. The filter 1030 can be disposed in the sensor base 1040. In a modified embodiment, the filter 1030 can be disposed in the base 1410. The filter 1030 can include an infrared filter. The infrared filter can block light of an infrared region from being incident on the image sensor 1060.

[0296] The camera module 1010A can include a sensor base 1040. The sensor base 1040 can be disposed between the lens driving device 1010 and the printed circuit board 1050. The sensor base 1040 can include a protrusion 1041 in which the filter 1030 is disposed. An opening can be formed in a portion of the sensor base 1040 in which the filter 1030 is disposed, so that light passing through the filter 1030 can be incident on the image sensor 1060. An adhesive member 1045 can couple or attach the base 1410 of the lens driving device 1010 to the sensor base 1040. Additionally, the adhesive member 1045 can be used to prevent foreign substances from entering into the lens driving device 10B. The adhesive member 1045 can include any one or more of an epoxy resin, a thermosetting adhesive, and a UV-curable adhesive.

[0297] The camera module 1010A can include a printed circuit board (PCB) 1050. The printed circuit board 1050 can be a substrate or a circuit board. The lens driving device 1010 can be disposed in the printed circuit board 1050. The sensor base 1040 can be disposed between the printed circuit board 1050 and the lens driving device 1010. The printed circuit board 1050 can be electrically connected to the lens driving device 1010. The image sensor 1060 can be disposed in the printed circuit board 1050. The printed circuit board 1050 can include various circuits, elements, a control unit, etc. in order to convert an image formed in the image sensor 1060 into an electrical signal and transmit the same to an external device.

[0298] The camera module 1010A can include the image sensor 1060. The image sensor 1060 can have a configuration in which light is incident through the lens and the optical filter 1030 to form an image. The image sensor 1060 can be mounted on the printed circuit board 1050. The image sensor 1060 can be electrically connected to the printed circuit board 1050. For example, the image sensor 1060 can be coupled to the printed circuit board 1050 by a surface mount technology (SMT). As another example, the image sensor 1060 can be coupled to the printed circuit board 1050 by a flip chip technology. The image sensor 1060 can be disposed such that the lens coincides with an optical axis. That is, an optical axis of the image sensor 1060 can be aligned with an optical axis of the lens. The image sensor 1060 can convert light radiated to an effective image area of the image sensor 1060 into an electrical signal. The image sensor 1060 can be any one of a charge-coupled device (CCD), a metal-oxide-semiconductor (MOS), a CPD, and a CID.

[0299] The camera module 1010A can include a motion sensor 1070. The motion sensor 1070 can be mounted on the printed circuit board 1050. The motion sensor 1070 can be electrically connected to the control unit 1080 through a circuit pattern disposed on the printed circuit board 1050. The motion sensor 1070 can output a rotational angular velocity information due to a motion of the camera device 1010A. The motion sensor 1070 can include a 2-axis or 3-axis gyro sensor or an angular velocity sensor.

[0300] The camera module 1010A can include a control unit 1080. The control unit 1080 can be disposed on the printed circuit board 1050. The control unit 1080 can be electrically connected to the first coil 1220 and the second coil 1430 of the lens driving device 1010. The control unit 1080 can individually control the direction, intensity, and magnitude of the current supplied to the first coil 1220 and the second coil 1430. The control unit 1080 can control the lens driving device 1010 to perform an auto focus function and / or an image stabilization function. In addition, the control unit 1080 can perform auto focus feedback control and / or hand-shake correction feedback control on the lens driving device 1010.

[0301] The camera module 1010A can include a connector 1090. The connector 1090 can be electrically connected to the printed circuit board 1050. The connector 1090 can include a port for electrical connection to an external device.

[0302] Hereinafter, an optical device according to a second embodiment of the present application will be described with reference to the accompanying drawings.

[0303] Figure 36 is a perspective view illustrating an optical device according to the second embodiment of the present application, and Figure 37 is a block diagram of the optical device according to the second embodiment of the present application.

[0304] The optical device 1010B can include a portable terminal. The optical device 1010B can be any one of a mobile phone, a mobile phone, a smart phone, a portable smart device, a digital camera, a laptop computer, a digital broadcasting terminal, a personal digital assistant (PDA), a portable multimedia player (PMP), and a navigation device. However, the type of the optical device 1010B is not limited thereto, and any device for photographing a video or a picture can be included in the optical device 1010B.

[0305] The optical device 1010B can include a main body 1850. The main body 1850 can have a bar shape. Alternatively, the main body 1850 can have various structures, such as a sliding type, a folding type, a swinging type, a rotating type, etc., in which two or more sub-bodies are coupled to be relatively movable. The main body 1850 can include a case (an outer case, a housing, and a cover) forming an appearance. For example, the main body 1850 can include a front case 1851 and a rear case 1852. Various electronic components of the optical device 1010B can be embedded in a space formed between the front case 1851 and the rear case 1852. A display module 1753 can be provided on one surface of the main body 1850. The camera 1721 can be provided on one or more of one surface of the main body 1850 and another surface provided at the opposite side of the one surface.

[0306] The optical device 1010B can include a wireless communication unit 1710. The wireless communication unit 1710 can include one or more modules that enable wireless communication between the optical device 1010B and a wireless communication system or between the optical device 1010B and a network to which the optical device 1010B is in communication. For example, the wireless communication unit 1710 can include any one or more of a broadcast receiving module 1711, a mobile communication module 1712, a wireless Internet module 1713, a short-range communication module 1714, and a location information module 1715.

[0307] The optical device 1010B can include an A / V input unit 1720. The A / V input unit 1720 is for inputting audio signals or video signals and can include any one or more of a camera 1721 and a microphone 1722. At this time, the camera 1721 can include the camera module 1010A according to the second embodiment of the present embodiment.

[0308] The optical device 1010B can include a sensing unit 1740. The sensing unit 1740 can generate a sensing signal for controlling an operation of the optical device 1010B by detecting a current state of the optical device 1010B, such as an open / close state of the optical device 1010B, a location of the optical device 1010B, presence or absence of user contact, an orientation of the optical device 1010B, acceleration / deceleration of the optical device 1010B, and the like. For example, when the optical device 1010B is in the form of a slide phone, it can be sensed whether the slide phone is open or closed. In addition, the sensing unit 1740 can be responsible for sensing functions related to whether the power supply unit 1790 supplies power, whether the interface unit 1770 is coupled to an external device, and the like.

[0309] The optical device 1010B can include an input / output unit 1750. The input / output unit 1750 can be configured to generate input or output related to vision, hearing, or touch. The input / output unit 1750 can generate input data for controlling an operation of the optical device 1010B, and the input / output unit 1750 can output information processed by the optical device 1010B.

[0310] The input / output unit 1750 can include any one or more of a keypad unit 1751, a touch screen panel 1752, a display module 1753, and a sound output module 1754. The keypad unit 1751 can generate input data in response to a keypad input. The touch screen panel 1752 can convert a change in capacitance generated due to a user's touch on a specific area of the touch screen into an electrical input signal. The display module 1753 can output an image photographed by the camera 1721. The display module 1753 can include a plurality of pixels whose colors change according to an electrical signal. For example, the display module 1753 can include at least one of a liquid crystal display, a thin film transistor liquid crystal display, an organic light emitting diode, a flexible display, and a 3D display. The sound output module 1754 can output audio data received from the wireless communication unit 1710 in a call signal reception mode, a call mode, a recording mode, a voice recognition mode, or a broadcast reception mode, or output audio data stored in the memory unit 1760.

[0311] The optical device 1010B can include a memory unit 1760. Programs for processing and controlling the control unit 1780 can be stored in the memory unit 1760. In addition, the memory unit 1760 can store input / output data, such as any one or more of a phonebook, a message, audio, a still image, a photo, and a moving picture. The memory unit 1760 can store an image, such as a photo or a video, photographed by the camera 1721.

[0312] The optical device 1010B can include an interface unit 1770. The interface unit 1770 serves as a path for connecting to an external device connected with the optical device 1010B. The interface unit 1770 can receive data from the external device, receive power, and transmit power to each component inside the optical device 1010B, or transmit data inside the optical device 1010B to the external device. The interface unit 1770 can include any one or more of a wired / wireless headset port, an external charger port, a wired / wireless data port, a memory card port, a port for connecting a device equipped with an identification module, and an audio I / O port, a video I / O port, and an earphone port.

[0313] The optical device 1010B can include a control unit 1780. The control unit 1780 can control overall operations of the optical device 1010B. The control unit 1780 can perform a control and a process related to a voice call, a data communication, a video call, etc. The control unit 1780 can include a display control unit 1781 which controls the display module 1753 which is a display of the optical device 1010B. The control unit 1780 can include a camera control unit 1782 which controls a camera module. The control unit 1780 can include a multimedia module 1783 for playing multimedia. The multimedia module 1783 can be disposed inside the control unit 1780 or can be disposed separately from the control unit 1780. The control unit 1780 can execute a pattern recognition program which is capable of recognizing a handwriting input or a drawing input performed on a touch screen as a character and an image, respectively.

[0314] The optical device 1010B can include a power supply unit 1790. The power supply unit 1790 can receive external power or internal power through a control of the control unit 1780 to supply power required for operations of each component.

[0315] The lens driving device according to the third embodiment of the present application can include a part of the lens driving device according to the first embodiment of the present application and a part of the lens driving device according to the second embodiment of the present application. For example, the lens driving device according to the third embodiment can include the support member 500 of the first embodiment and the support member 1500 of the second embodiment at the same time. In addition, the lens driving device according to the third embodiment can include the configuration of the first embodiment and the configuration of the second embodiment at the same time in addition to the support member 500 and the support member 1500.

[0316] While the embodiments of the present application have been described above with reference to the accompanying drawings, it will be understood by those skilled in the art that the present application can be implemented in other specific forms without changing the technical spirit or essential characteristics thereof. Therefore, it should be understood that the above-described embodiments are illustrative in all aspects and are not restrictive.

Claims

1. A lens driving device, comprising: a fixed part; a moving part disposed to move relative to the fixed part; a coil holder disposed in the moving part; a magnet disposed on either one of the coil holder and the fixed part; a coil disposed on the other one of the coil holder and the fixed part; a support member including one end coupled with the coil holder and the other end coupled with the moving part; and a shape memory alloy member coupled to the fixed part and the moving part, wherein the shape memory alloy member is configured to move the moving part in an optical axis direction, wherein the coil and the magnet are configured to move the coil holder relative to the moving part in a direction perpendicular to the optical axis direction, and wherein the support member is configured to move together with the moving part in the optical axis direction. Both ends of the shape memory alloy member are connected with the fixed part, and a central region of the shape memory alloy member is connected with the moving part.

2. The lens driving apparatus according to claim 1, wherein The support member includes regions having different widths.

3. The lens driving apparatus according to claim 1, wherein The other end of the support member is coupled with the moving part such that the other end of the support member is configured to move together with the moving part when the moving part is moved by the shape memory alloy member.

4. The lens driving apparatus according to claim 1, wherein A peripheral region of the support member has a width thicker than a width of a central region of the support member.

5. The lens driving apparatus according to claim 1, wherein The support member has a head portion and a body portion, and 6. The lens driving apparatus according to claim 1, wherein wherein the width of the head portion is greater than the width of the body portion. The shape memory alloy member includes a first unit shape memory alloy member and a second unit shape memory alloy member.

7. The lens driving apparatus according to claim 1, wherein The magnet includes a first unit magnet and a second unit magnet.

8. The lens driving apparatus according to claim 7, wherein The moving part includes a first corner region connected with the first unit shape memory alloy member and a second corner region adjacent to the first corner region, and 9. The lens driving apparatus according to claim 8, wherein wherein the first unit magnet is disposed closer to the second corner region than the first corner region. The moving part includes a third corner region in a diagonal direction relative to the first corner region, 10. The lens driving apparatus according to claim 9, wherein wherein the second unit shape memory alloy member is connected with the third corner region of the moving part, and wherein the second unit magnet is disposed closer to the second corner region than the third corner region. The support member is disposed in the optical axis direction.

11. The lens driving apparatus according to claim 1, wherein The coil holder is configured to move together with the moving part when the moving part is moved in the optical axis direction.

12. The lens driving apparatus according to claim 1, wherein The support member includes a body portion and first and second concave portions formed to have a width narrower than the body portion, 13. The lens driving apparatus according to claim 1, wherein wherein the first concave portion of the support member is coupled with the coil holder, and wherein the second concave portion of the support member is coupled with the moving part. 14.A lens driving device, comprising: a fixed part; ​ a moving portion provided in the fixed portion; a coil holder provided in the moving portion; a shape memory alloy member configured to move the moving portion in an optical axis direction; a coil and a magnet configured to move the coil holder relative to the moving portion in a direction perpendicular to the optical axis direction; and a support member connecting the coil holder and the moving portion, wherein the support member is configured to move together with the moving portion in the optical axis direction.

15. The lens driving apparatus according to claim 14, wherein Both end portions of the shape memory alloy member are connected to the fixed portion, and wherein a central region of the shape memory alloy member is connected to the moving portion.

16. The lens driving apparatus according to claim 14, wherein The support member includes regions having different widths.

17. The lens driving apparatus according to claim 14, wherein The support member includes a body portion and first and second concave portions formed to have a narrower width than the body portion, wherein the first concave portion of the support member is coupled to the coil holder, and wherein the second concave portion of the support member is coupled to the moving portion.

18. A lens driving apparatus comprising: a fixed portion; a moving portion moving relative to the fixed portion in an optical axis direction; a coil holder provided in the moving portion; a driving unit configured to move the coil holder in a direction perpendicular to the optical axis direction; a support member coupled to the coil holder and the moving portion; and a shape memory alloy member coupled to the fixed portion and the moving portion, wherein the support member includes regions having different widths, and wherein the support member is configured to move together with the moving portion in the optical axis direction.

19. A camera module comprising: a printed circuit board; an image sensor provided on the printed circuit board; a lens driving apparatus according to any one of claims 1 to 18 provided on the printed circuit board; and a lens coupled to the coil holder of the lens driving apparatus.

20. An optical apparatus comprising: a main body; a camera module according to claim 19 provided on the main body; and a display provided on the main body and outputting an image taken by the camera module.

Images