Lens driving device, camera module, and optical apparatus

Abstract

To provide a lens driving device capable of achieving an autofocus function and a camera shake correction function even in a high-pixel compact camera module.SOLUTION: A base; a housing disposed on the base; a substrate disposed between the base and the housing; a holder disposed in the housing; a first magnet and a first coil configured to move the housing and the holder in an optical axis direction; a second magnet disposed in the holder; And a second coil disposed at a position corresponding to the second magnet, wherein the second coil moves the holder in a direction perpendicular to the optical axis direction, the first region of the substrate is connected to the housing, the second region of the substrate is connected to the base, and the first region of the substrate is moved by the movement of the housing.SELECTED DRAWING: Figure 6

Description

[Technical Field]

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

[0002] As various types of mobile terminals have become widespread and wireless Internet services have become commonplace, consumer demands regarding mobile terminals have become more diverse, and various types of add-on devices are being installed on mobile terminals.

[0003] A typical example of such a module is a camera module that takes photos and videos of a subject. Meanwhile, recent camera modules are equipped with an autofocus function that automatically adjusts the focus according to the distance of the subject, and an image stabilization function that corrects camera shake caused by the user's hand.

[0004] In recent years, the trend in cameras for mobile devices has been toward smaller and higher pixel counts. However, in high-pixel compact camera modules, the lens diameter increases and the overall module size decreases, making it difficult to implement autofocus and image stabilization functions. Summary of the Invention [Problem to be solved by the invention]

[0005] This embodiment aims to provide a lens driving device that can realize an autofocus function and an image stabilization function even in a small camera module with a high pixel count. [Means for solving the problem]

[0006] The lens driving device of this embodiment includes a base; a housing arranged on the base; a substrate arranged between the base and the housing; a holder arranged within the housing; a first magnet and a first coil that move the housing and the holder in the optical axis direction; a second magnet arranged in the holder; a second coil that is arranged between the housing and the substrate and is arranged at a position corresponding to the second magnet; and the second coil moves the holder in a direction perpendicular to the optical axis direction, wherein a first region of the substrate is connected to the housing and a second region of the substrate is connected to the base, and the first region of the substrate can be moved by movement of the housing.

[0007] The first region may include a main body portion on which the second coil is disposed, and the substrate may include an elastic connecting portion connecting the first region and the second region.

[0008] The elastic connecting portion can connect the main body portion and the second region.

[0009] The first region may include one end portion coupled to the housing and an elastic connecting portion connecting the one end portion to the main body portion.

[0010] The lens driving device of this embodiment includes a base; a first frame arranged on the base; a substrate arranged between the base and the first frame; a second frame arranged within the first frame; a third frame arranged between the first frame and the second frame; a second magnet arranged in the second frame; a second coil arranged between the first frame and the substrate and positioned corresponding to the second magnet; and the second coil moves the second frame in a direction perpendicular to the optical axis direction, so that the first frame is moved in the optical axis direction, the second frame is moved in a direction perpendicular to the optical axis direction, and the substrate is moved by the movement of the first frame.

[0011] The substrate may include a first region that is coupled to the base, a second region that is coupled to the first frame, and an elastic connecting portion that connects the first region and the second region, and the elastic connecting portion of the substrate may include a flexible portion.

[0012] The elastic connection portion of the substrate may have a shape that is bent multiple times, and the elastic connection portion of the substrate may overlap the second coil in the optical axis direction.

[0013] The substrate may be formed in a shape that is symmetrical with respect to the optical axis.

[0014] The mover may include the first to third frames, the first frame including a housing, the second frame including a holder, and the third frame including a frame, and the lens driving device may include a first ball arranged between the housing and the frames; and a second ball arranged between the frames and the holder.

[0015] The housing may include a first groove in which the first ball is disposed, the first ball may contact the housing at two or more points, and the first groove of the housing may be formed to be longer than a diameter of the first ball in a first direction perpendicular to the optical axis direction.

[0016] The frame may include a first groove formed on an upper surface of the frame and in which the second ball is disposed, and the first groove of the frame may be formed to be longer than a diameter of the second ball in a second direction perpendicular to the optical axis direction and the first direction.

[0017] The frame may include a second groove formed on a lower surface of the frame and in which the first ball is disposed, the second groove of the frame having a shape corresponding to at least a portion of the first ball, and the holder may include a groove in which the second ball is disposed, the groove of the holder having a shape corresponding to at least a portion of the second ball.

[0018] The first ball can guide the frame to move relative to the housing in a first direction perpendicular to the optical axis direction, and the second ball can guide the holder to move relative to the frame in a second direction perpendicular to the optical axis direction and the first direction.

[0019] The lens driving device may include a first coil disposed on the housing; and a first magnet disposed on the base.

[0020] The first coil may be electrically connected to the substrate.

[0021] The lens driving device may include a first yoke disposed in the housing and disposed within the first coil.

[0022] The housing may include a bottom plate and side plates extending from the bottom plate, the second coil may be disposed on a bottom surface of the bottom plate of the housing, and the substrate may be coupled to the bottom surface of the bottom plate of the housing.

[0023] The lens driving device may include a second yoke disposed within the second coil on the lower surface of the lower plate of the housing.

[0024] The lens driving device includes a third ball that contacts the housing and the base, and the third ball can guide the housing to move in the optical axis direction relative to the base.

[0025] The lens driving device includes a cover member including an upper plate and a side plate extending from the upper plate; and a spacer arranged between the cover member and the base, the housing including a second groove in which the third ball is arranged, and the spacer including an upper plate and a protrusion protruding downward from the upper plate of the spacer, at least a portion of which is inserted into the second groove of the housing.

[0026] The lens driving device may include a driver IC disposed on the substrate and electrically connected to the first coil, the driver IC including a Hall element that senses the first magnet; and a Hall sensor disposed on the substrate and that senses the second magnet.

[0027] The lens driving device may include a third ball in contact with the housing and the base, the third ball including a third-1 ball disposed on one side of the first coil and a third-2 ball disposed on the other side of the first coil, the base including a first surface facing the housing and a groove recessed into the first surface of the base, the third-1 ball being disposed on the first surface of the base, and the third-2 ball being disposed in the groove of the base.

[0028] A groove may not be formed in the area of ​​the first surface of the base where the 3-1 ball is disposed.

[0029] The housing may include a protrusion that protrudes toward the first surface of the base, and the third ball may be disposed on the protrusion of the housing.

[0030] The lens driving device may include a third magnet disposed on the base; and a fourth magnet disposed on the housing, and the fourth magnet may be disposed at a position corresponding to the third magnet so that an attractive force acts between the fourth magnet and the third magnet.

[0031] The lens driving device includes a housing cover coupled to the housing and positioned on the holder; a fifth magnet positioned on the housing cover; and a sixth magnet positioned on the holder; the frame and the second ball are positioned below the holder, and the sixth magnet can be positioned at a position corresponding to the fifth magnet so that a repulsive force acts between them.

[0032] The lens driving device may include a second yoke disposed on the base at a position corresponding to the second magnet so as to exert an attractive force on the second magnet.

[0033] The camera module of this embodiment may include: a printed circuit board; an image sensor arranged on the printed circuit board; a lens driving device arranged on the printed circuit board; and a lens coupled to the second frame of the lens driving device.

[0034] The optical device according to this embodiment may include a main body; a camera module disposed on the main body; and a display disposed on the main body for outputting at least one of an image and a video captured by the camera module.

[0035] The lens driving device of this embodiment includes a base; a housing disposed within the base; a holder disposed within the housing; a first magnet and a first coil that move the housing and the holder in the optical axis direction; a second magnet disposed in the holder; a second coil disposed on the housing and positioned corresponding to the second magnet; and a substrate that connects the housing and the base; wherein the substrate includes a first connecting portion that connects to the base, a second connecting portion that connects to the housing, and a connecting portion that connects the first connecting portion and the second connecting portion, and the connecting portion of the substrate includes a flexible portion, and the second connecting portion of the substrate can be connected to the second coil via an electrically conductive member.

[0036] The lens driving device of this embodiment includes a base; a first frame arranged on the base; a second frame arranged within the first frame; a first magnet arranged on either the base or the first frame and a first coil arranged on the other of the base and the first frame; a second magnet arranged on the second frame; a first frame cover coupled to the first frame and arranged on the second frame; a first repulsive magnet arranged on the second frame; and a second repulsive magnet arranged on the first frame cover at a position corresponding to the first repulsive magnet; and a repulsive force can be generated between the first repulsive magnet and the second repulsive magnet in the optical axis direction.

[0037] The frame may include a third frame disposed between the first frame and the second frame.

[0038] The third frame may include a fifth magnet disposed on the third frame. [Effects of the Invention]

[0039] According to this embodiment, the camera module including the lens driving device can be made smaller and have a higher pixel count.

[0040] Furthermore, a precise autofocus function and image stabilization function can be implemented. [Brief explanation of the drawings]

[0041] [Figure 1] FIG. 1 is a perspective view of a lens driving device according to an embodiment of the present invention. [Figure 2] FIG. 2 is a cross-sectional view taken along line AA in FIG. [Figure 3] FIG. 2 is a cross-sectional view taken along the line BB in FIG. [Figure 4] FIG. 2 is a cross-sectional view taken along CC in FIG. [Figure 5] FIG. 2 is a perspective view of FIG. 1 in which a cover member is omitted. [Figure 6]FIG. 2 is an exploded perspective view of the lens driving device according to the embodiment. [Figure 7] FIG. 2 is a perspective view illustrating a housing and related components of the lens driving device according to the embodiment. [Figure 8] FIG. 8 is a perspective view of FIG. 7 as seen from another direction. [Figure 9] 2 is a plan view illustrating a substrate and related configuration of the lens driving device according to the embodiment. FIG. [Figure 10] 1 is a perspective view illustrating a state in which a housing and a substrate of the lens driving device according to the present embodiment are joined together. [Figure 11] 1 is a plan view illustrating the arrangement of a housing and a first ball of a lens driving device according to an embodiment of the present invention. [Figure 12] FIG. 12 is a plan view illustrating the state in which the mover is arranged in FIG. [Figure 13] FIG. 2 is a bottom view of the mover and related components of the lens driving device according to the embodiment. [Figure 14] 13 is a plan view illustrating the state in which the second ball is arranged in FIG. 12, an enlarged view of the groove of the mover, and a view of a modified example. [Figure 15] FIG. 15 is a plan view illustrating the state in which the holder is placed in FIG. 14. [Figure 16] FIG. 2 is a bottom view of the holder and related components of the lens driving device according to the embodiment, and is an enlarged view of a groove in the holder. [Figure 17] FIG. 2 is a plan view of a partial configuration of the lens driving device according to the embodiment. [Figure 18] FIG. 2 is a perspective view of the lens driving device according to the embodiment, in which a cover member and a spacer are omitted. [Figure 19] 3A to 3C are diagrams illustrating OIS driving of the lens driving device according to the present embodiment. [Figure 20] 3A and 3B are diagrams illustrating the AF drive of the lens drive device according to the embodiment. [Figure 21] 10A and 10B are a plan view and an enlarged view illustrating a third ball and related configurations of a lens driving device according to a modified example. [Figure 22] 22 is a diagram illustrating another modification of the third ball and related configuration illustrated in FIG. 21. FIG. [Figure 23] FIG. 10 is a perspective view illustrating the arrangement of a third magnet and a fourth magnet of a lens driving device according to a modified example. [Figure 24] FIG. 10 is a perspective view illustrating the arrangement of a third magnet and a fourth magnet of a lens driving device according to a modified example. [Figure 25] 10A and 10B are a perspective view and a partially enlarged perspective view illustrating the arrangement of a housing cover, a fifth magnet, and a sixth magnet of a lens driving device according to a modified example. [Figure 26] 10(a) is a diagram illustrating the housing cover and the fifth magnet, and FIG. 10(b) is a diagram illustrating the arrangement of the sixth magnet. [Figure 27] 10 is a diagram illustrating the arrangement of a second yoke of a lens driving device according to a modified example. FIG. [Figure 28] FIG. 2 is an exploded perspective view of the camera module according to the embodiment. [Figure 29] FIG. 1 is a perspective view of an optical device according to an embodiment of the present invention. DETAILED DESCRIPTION OF THE INVENTION

[0042] DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.

[0043] However, the technical concept of the present invention is not limited to the described embodiments, but can be embodied in various different forms, and one or more of the components of the embodiments can be selectively combined or substituted within the scope of the technical concept of the present invention.

[0044] Furthermore, unless otherwise clearly defined and described, terms (including technical and scientific terms) used in the embodiments of the present invention shall be interpreted as meanings that are commonly understood by a person of ordinary skill in the art to which the present invention belongs, and commonly used terms such as predefined terms shall be interpreted in light of the contextual meaning of the relevant art.

[0045] Furthermore, the terms used in the embodiments of the present invention are intended to explain the embodiments and are not intended to limit the present invention.

[0046] In this specification, the singular can include the plural unless otherwise specified in the context, and when it is stated as "A and (and) at least one (or more) of B and C," it can include one or more of all possible combinations of A, B, and C.

[0047] Furthermore, when describing components of the embodiments of the present invention, terms such as first, second, A, B, (a), (b), etc. are used only to distinguish the component from other components, and the terms do not limit the nature, order, or sequence of the components.

[0048] Furthermore, when a component is described as being 'coupled', 'coupled', or 'connected' to another component, this includes not only when the component is directly 'coupled', 'coupled', or 'connected' to the other component, but also when the component is 'coupled', 'coupled', or 'connected' by another component between the component and the other component.

[0049] Furthermore, when described as being formed or disposed "above" or "below" each component, "above" or "below" includes not only the case where two components are in direct contact with each other, but also the case where one or more additional components are formed or disposed between the two components. Furthermore, when described as "above" or "below," it can include not only the meaning of an upper direction but also the meaning of a lower direction based on one component.

[0050] The term "optical axis direction" used below is defined as the optical axis direction of a lens and / or an image sensor coupled to a lens driving device.

[0051] The 'vertical direction' used below may be a direction parallel to the optical axis direction. The vertical direction may correspond to the 'z optical direction'. The 'horizontal direction' used below may be a direction perpendicular to the vertical direction. That is, the horizontal direction may be a direction perpendicular to the optical axis. Therefore, the horizontal direction may include the 'x optical direction' and the 'y optical direction'.

[0052] The 'autofocus function' used below is defined as a function that automatically focuses on a subject by adjusting the distance to the image sensor by moving the lens along the optical axis according to the distance to the subject so that a clear image of the subject can be obtained on the image sensor. On the other hand, 'autofocus' can correspond to 'AF (Auto Focus)'.

[0053] The term "image stabilization" used below is defined as a function that moves or tilts the lens in a direction perpendicular to the optical axis to offset vibrations (movements) that occur in the image sensor due to external forces. "Image stabilization" can also be used interchangeably with "OIS (Optical Image Stabilization)" or "Optical Image Stabilization."

[0054] The lens driving device according to this embodiment will be described below with reference to the drawings.

[0055] 1 is a perspective view of the lens driving device according to the present embodiment, FIG. 2 is a cross-sectional view taken along line AA in FIG. 1, FIG. 3 is a cross-sectional view taken along line BB in FIG. 1, FIG. 4 is a cross-sectional view taken along line CC in FIG. 1, FIG. 5 is a perspective view of FIG. 1 with the cover member omitted, FIG. 6 is an exploded perspective view of the lens driving device according to the present embodiment, FIG. 7 is a perspective view illustrating a housing and related components of the lens driving device according to the present embodiment, FIG. 8 is a perspective view of FIG. 7 seen from a different direction, FIG. 9 is a plan view illustrating a board and related components of the lens driving device according to the present embodiment, FIG. 10 is a perspective view illustrating a coupled state of the housing and board of the lens driving device according to the present embodiment, FIG. 11 is a plan view illustrating an arrangement structure of the housing and first ball of the lens driving device according to the present embodiment, and FIG. 16 is a bottom view of the holder and related components of the lens driving device of this embodiment, and an enlarged view of the holder groove. FIG. 17 is a plan view of a partial configuration of the lens driving device of this embodiment. FIG. 18 is a perspective view of the lens driving device of this embodiment with the cover member and spacer omitted. FIG. 19 is a diagram explaining OIS drive of the lens driving device of this embodiment. FIG. 20 is a diagram explaining AF drive of the lens driving device of this embodiment.

[0056] The lens driving device 10 may include a stator 100. The stator 100 may move a first mover 200 and a second mover 300. The stator 100 may accommodate the first mover 200 and the second mover 300 therein. The stator 100 may be a part that is fixed relatively when the first mover 200 and the second mover 300 move.

[0057] The lens driving device 10 may include a base 110. The stator 100 may include a base 110. The base 110 may be disposed outside the housing 210. The base 110 may be disposed outside the holder 310. The base 110 may house at least a portion of the housing 210. The base 110 may house at least a portion of the holder 310. The base 110 may be coupled to the cover member 130. The base 110 may be spaced apart from the holder 310. The base 110 may be at least partially spaced apart from the housing 210.

[0058] The base 110 may include a lower plate and side plates. The base 110 may include the lower plate disposed below the housing 210 and a plurality of side plates extending upward from the lower plate. The plurality of side plates of the base 110 may be disposed to encase the housing 210.

[0059] The base 110 may include a groove 111. The groove 111 may accommodate the third ball 530. The groove 111 may be a third ball accommodating groove. The groove 111 may be recessed into the inner surface of the side plate of the base 110. The depth of the groove 111 may be smaller than the diameter of the third ball 530. The third ball 530 may contact the groove 111 at least two points. The third ball 530 may contact the groove 111 at three points. Alternatively, the third ball 530 may contact the groove 111 at one point.

[0060] The lens driving device 10 may include a first magnet 120. The stator 100 may include the first magnet 120. The first magnet 120 may be disposed on the base 110. The first magnet 120 may face the first coil 220. The first magnet 120 may be disposed to face the first coil 220. The first magnet 120 may electromagnetically interact with the first coil 220. The first magnet 120 may move the housing 210 and the holder 310 in the optical axis direction. The first magnet 120 may be an AF driving magnet. The first magnet 120 may move the housing 210 and the holder 310 in the optical axis direction by interacting with the first coil 220. The first magnet 120 may move the housing 210 and the holder 310 in the optical axis direction by electromagnetic interaction with the first coil 220.

[0061] The lens driving device 10 may include a cover member 130. The stator 100 may include a cover member 130. The cover member 130 may cover the base 110. The cover member 130 may be disposed to encase the base 110. The cover member 130 may cover the base 110. The cover member 130 may cover the housing 210. The cover member 130 may cover the holder 310. The cover member 130 may include a 'cover can'. The cover can may support the entire structure. The cover member 130 may be a non-magnetic material. The cover member 130 may be made of metal. The cover member 130 may be made of a metal plate. The cover member 130 may be connected to a ground portion of the printed circuit board 50. Thus, the cover member 130 may be grounded. The cover member 130 can block electro magnetic interference (EMI), and can be called an 'EMI shield can'.

[0062] The cover member 130 may include a top plate 131. The cover member 130 may include side plates 132. The cover member 130 may include a top plate 131 and side plates 132 extending from the top plate 131. The side plates 132 of the cover member 130 may be coupled to the base. The cover member 130 may include a top plate 131 including a hole and side plates 132 extending downward from the outer periphery or edge of the top plate 131. The side plates 132 may include multiple side plates. The side plates 132 may include four side plates.

[0063] The lens driving device 10 may include a spacer 140. The stator 100 may include a spacer 140. The spacer 140 may be disposed between the cover member 130 and the base 110. The spacer 140 may be disposed on the base 110. The spacer 140 may be coupled to the base 110. The spacer 140 may include an upper plate 141. The spacer 140 may include a protrusion 142. The protrusion 142 may protrude downward from the upper plate 141. At least a portion of the protrusion 142 may be inserted into the second groove 212 of the housing 210. Thus, the protrusion 142 of the spacer 140 may prevent the third ball 530 disposed in the second groove 212 of the housing 210 from coming off upward. The spacer 140 may be assembled to prevent the ball and the magnet from coming off.

[0064] The lens driving device 10 may include a first movable element 200. The first movable element 200 may be disposed within the stator 100. The first movable element 200 may be movably disposed within the stator 100. The first movable element 200 may move in the optical axis direction relative to the stator 100. At this time, the second movable element 300 may move together with the first movable element 200. The first movable element 200 may move for AF driving. The first movable element 200 may be an AF movable element.

[0065] The lens driving device 10 may include a housing 210. The first movable element 200 may include a housing 210. The housing 210 may be disposed within the base 110. The housing 210 may be disposed outside the holder 310. The housing 210 may house the holder 310 therein. A first coil 220 and a second coil 230 may be disposed in the housing 210. The housing 210 may move in the optical axis direction. The housing 210 may move during AF driving.

[0066] The housing 210 may include a first groove 211. The first ball 510 may be disposed in the first groove 211. The first groove 211 may be a first ball receiving groove. The first groove 211 may be formed to be longer than the diameter of the first ball 510 in a first direction perpendicular to the optical axis direction. The first groove 211 may guide the first ball 510 to move in the first direction perpendicular to the optical axis direction.

[0067] The housing 210 may include a second groove 212. The third ball 530 may be disposed in the second groove 212. The second groove 212 may be a third ball receiving groove. The second groove 212 may be formed on an outer surface of the housing 210. The housing 210 may include a first surface facing the side plate of the base 110. The second groove 212 may be recessed into the first surface of the housing 210. The second groove 212 may be formed to extend in the optical axis direction. The second groove 212 may be formed to be longer than the diameter of the third ball 530 in the optical axis direction. The second groove 212 may guide the third ball 530 to move in the optical axis direction.

[0068] The housing 210 may include a lower plate 213. The lower plate 213 may be disposed between the holder 310 and the base 110. The lower plate 213 may be disposed below the holder 310 and the mover 330. A lower stopper that comes into contact with the base 110 may be formed on the lower surface of the lower plate 213. The lower stopper may be formed on one or more of the housing 210 and the base 110. The lower stopper may mechanically limit the downward movement of the housing 210.

[0069] The housing 210 may include a side plate 214. The side plate 214 may extend from the bottom plate 213. The side plate 214 may include a plurality of side plates. The side plate 214 may include four side plates. The first coil 220 may be disposed on the side plate 214. The third ball 530 may be disposed on the side plate 214.

[0070] The lens driving device 10 may include a first coil 220. The first movable element 200 may include a first coil 220. The first coil 220 may face the first magnet 120. The first coil 220 may be disposed to face the first magnet 120. The first coil 220 may move the housing 210 and the holder 310 in the optical axis direction. The first coil 220 may be an AF driving coil. The first coil 220 may move the housing 210 and the holder 310 in the optical axis direction by interacting with the first magnet 120. The first coil 220 may move the housing 210 and the holder 310 in the optical axis direction by electromagnetic interaction with the first magnet 120. The first coil 220 may be disposed in the housing 210. The first coil 220 may be electrically connected to the substrate 400 .

[0071] The lens driving device 10 may include a second coil 230. The first mover 200 may include the second coil 230. The second coil 230 may be disposed in the housing 210. The second coil 230 may be disposed at a position corresponding to the second magnet 320. The second coil 230 may move the holder 310 in a direction perpendicular to the optical axis direction. The second coil 230 may be an OIS driving coil. The second coil 230 may move the holder 310 in a direction perpendicular to the optical axis direction through interaction with the second magnet 320. The second coil 230 may move the holder 310 in a direction perpendicular to the optical axis direction through electromagnetic interaction with the second magnet 320. The second coil 230 may be disposed on the lower surface of the lower plate 213 of the housing 210.

[0072] The second coil 230 may include multiple coils. The second coil 230 may include four coils. The second coil 230 may include 2-1 to 2-4 coils 231, 232, 233, and 234. The second coil 230 may include an OIS-X coil that moves the holder 310 in the x-direction (first direction). The second coil 230 may include an OIS-Y coil that moves the holder 310 in the y-direction (second direction perpendicular to the first direction). In this case, the optical axis may be the z-axis. The 2-1 coil 231 and the 2-2 coil 232 may move the holder 310 in the x-direction. The 2-1 coil 231 and the 2-2 coil 232 may be electrically connected. Alternatively, the 2-1 coil 231 and the 2-2 coil 232 may be electrically separated and controlled separately. The 2-3 coil 233 and the 2-4 coil 234 can move the holder 310 in the y-direction. The 2-3 coil 233 and the 2-4 coil 234 can be electrically connected. Alternatively, the 2-3 coil 233 and the 2-4 coil 234 can be electrically separated and controlled separately.

[0073] The 2-1 coil 231 may be a first unit coil, the 2-2 coil 232 may be a second unit coil, the 2-3 coil 233 may be a third unit coil, and the 2-4 coil 234 may be a fourth unit coil.

[0074] The lens driving device 10 may include a first yoke 240. The first armature 200 may include the first yoke 240. The first yoke 240 may be disposed in the housing 210. The first yoke 240 may be disposed within the first coil 220. The first yoke 240 may be formed of a magnetic material. The first yoke 240 may be formed of a metal. At least a portion of the first yoke 240 may face the first magnet 120. The first yoke 240 may be disposed at a position corresponding to the first magnet 120. An attractive force may act between the first yoke 240 and the first magnet 120. As a result, the housing 210 may press the third ball 530 toward the base 110. Therefore, contact between the housing 210 and the third ball 530 and contact between the base 110 and the third ball 530 may be maintained. The first yoke 240 may be an AF yoke.

[0075] The lens driving device 10 may include a second yoke 250. The first mover 200 may include the second yoke 250. The second yoke 250 may be disposed on a lower surface of the lower plate 213 of the housing 210. The second yoke 250 may be disposed within the second coil 230. Alternatively, the second yoke 250 may be larger than the second coil 230. In this case, the second yoke 250 may be disposed between the second coil 230 and the housing 210. The second yoke 250 may be formed of a magnetic material. The second yoke 250 may be formed of a metal. At least a portion of the second yoke 250 may face the second magnet 320. The second yoke 250 may be disposed at a position corresponding to the second magnet 320. An attractive force may act between the second yoke 250 and the second magnet 320. As a result, the mover 330 may press the first ball 510 toward the housing 210. Therefore, contact can be maintained between the mover 330 and the first ball 510 and between the housing 210 and the first ball 510. The second yoke 250 can be an OIS yoke.

[0076] The lens driving device 10 can include a second movable element 300. The second movable element 300 can be disposed within the stator 100. The second movable element 300 can be disposed movably within the first stator 100. The second movable element 300 can be disposed within the first movable element 200. The second movable element 300 can be disposed movably within the first movable element 200. The second movable element 300 can move in a direction perpendicular to the optical axis direction relative to the stator 100 and the first movable element 200. The second movable element 300 can move to drive the OIS. The second movable element 300 can be an OIS movable element.

[0077] The lens driving device 10 may include a holder 310. The second movable element 300 may include a holder 310. The holder 310 may be disposed within the housing 210. The holder 310 may be disposed within the base 110. The holder 310 may be disposed within the cover member 130. The holder 310 may be coupled to a lens. A second magnet 320 may be disposed in the holder 310. The holder 310 may move when the OIS is driven. The holder 310 may also move together with the housing 210 when the AF is driven.

[0078] The holder 310 may include a groove 311. The second ball 520 may be disposed in the groove 311. The groove 311 may be a second ball receiving groove. The groove 311 may be formed in a shape corresponding to at least a portion of the second ball 520. The groove 311 may be formed so that the second ball 520 does not come off. The groove 311 may contact the second ball 520 at one point. Alternatively, the groove 311 may contact the second ball 520 at two points. The groove 311 may contact the second ball 520 at three or more points. The groove 311 may be formed on the lower surface of the holder 310.

[0079] The lens driving device 10 may include a second magnet 320. The second mover 300 may include the second magnet 320. The second magnet 320 may be disposed on the holder 310. The second magnet 320 may face the second coil 230. The second magnet 320 may be disposed to face the second coil 230. The second magnet 320 may overlap the second coil 230 in the optical axis direction. The second magnet 320 may be disposed at a position corresponding to the second coil 230. The second magnet 320 may electromagnetically interact with the second coil 320. The second magnet 320 may move the holder 310 in a direction perpendicular to the optical axis direction. The second magnet 320 may move the holder 310 in a direction perpendicular to the optical axis direction through its interaction with the second coil 230. The second magnet 320 may move the holder 310 in a direction perpendicular to the optical axis direction through its electromagnetic interaction with the second coil 230.

[0080] The second magnet 320 may include a plurality of magnets. The second magnet 320 may include four magnets. The number of second magnets 320 may correspond to the number of second coils 230. The second magnet 320 may include a 2-1 magnet 321 that moves the holder 310 in the x-direction (first direction). In this case, the 2-1 magnet 321 may be an OIS-X magnet. The second magnet 320 may include a 2-2 magnet 322 that moves the holder 310 in the y-direction (second direction perpendicular to the first direction). In this case, the 2-2 magnet 322 may be an OIS-Y magnet. In this case, the optical axis may be the z-axis. Each of the 2-1 magnet 321 and the 2-2 magnet 322 may include two magnets. The 2-1 magnet 321 may be disposed on the mover 330. The 2-2 magnet 322 may be disposed on the holder 310. Conversely, the 2-1 magnet 321 can be disposed on the holder 310. The 2-2 magnet 322 can be disposed on the mover 330.

[0081] The lens driving device 10 may include a mover 330. The mover 330 may include a frame. The second mover 300 may include the mover 330. The mover 330 may be disposed between the holder 310 and the housing 210. Mover 330 can move relative to housing 210 in a direction perpendicular to the optical axis direction. Mover 330 can move relative to housing 210 in a first direction perpendicular to the optical axis direction. Holder 310 can move relative to mover 330 in a second direction perpendicular to the optical axis direction and the first direction. Conversely, holder 310 can move relative to mover 330 in the first direction perpendicular to the optical axis direction. Mover 330 can move relative to housing 210 in a second direction perpendicular to the optical axis direction and the first direction. The direction in which mover 330 moves relative to housing 210 and the direction in which holder 310 moves relative to mover 330 can be perpendicular to each other.

[0082] The mover 330 may include a first groove 331. The first groove 331 may be formed on an upper surface of the mover 330. The second ball 520 may be disposed in the first groove 331. The first groove 331 may be a second ball receiving groove. The first groove 331 may be formed to be longer than the diameter of the second ball 520 in a second direction perpendicular to the optical axis direction and the first direction. The first groove 331 may guide the second ball 520 to move in the second direction. Alternatively, the first groove 331 may guide the second ball 520 to move in the first direction. In this case, the first groove 211 of the housing 210 may guide the first ball 510 to move in the second direction. The first groove 211 may have a triangular cross section as shown in FIG. 14(a). Alternatively, the first groove 211 may have a rectangular cross section as shown in FIG. 14(b). Alternatively, as shown in FIG. 14(c), the cross section of the first groove 211 may be formed in a semicircular shape.

[0083] The mover 330 may include a second groove 332. The second groove 332 may be formed on the lower surface of the mover 330. The first ball 510 may be disposed in the second groove 332. The second groove 332 may be a first ball receiving groove. The second groove 331 may be formed in a shape corresponding to at least a portion of the first ball 510. The first ball 510 may roll within the second groove 331. The first ball 510 may rotate while maintaining a state in which at least a portion of the first ball 510 is inserted into the second groove 331. The second groove 332 may restrain the first ball 510 so that it can rotate but cannot move. The second groove 332 may be formed in a hemispherical shape as shown in FIG. 13.

[0084] The lens driving device 10 may include a substrate 400. The substrate 400 may connect the housing 210 and the base 110. The substrate 400 may be disposed between the base 110 and the housing 210. The substrate 400 may be electrically connected to the first coil 220. The substrate 400 may be electrically connected to the second coil 230. At least a portion of the substrate 400 may be formed of a flexible printed circuit board (FPCB). The substrate 400 may be formed in a shape that is symmetrical with respect to the optical axis. The substrate 400 may elastically support movement of the housing 210. The substrate 400 may support the housing 210 so that it moves in the optical axis direction relative to the base 110. The substrate 400 may be coupled to a lower surface of a lower plate 213 of the housing 210.

[0085] The substrate 400 may include a first coupling part 410. The first coupling part 410 may be coupled to the base 110. The first coupling part 410 may include a hole into which a protrusion of the base 110 is inserted. The first coupling part 410 may be disposed on an upper surface of the base 110. The first coupling part 410 may be fixed to the base 110.

[0086] The substrate 400 may include a second coupling part 420. The second coupling part 420 may be coupled to the housing 210. The second coupling part 420 may be coupled to the second coil 230 via a conductive member. The second coupling part 420 may be electrically connected to the second coil 230. The second coupling part 420 may be electrically connected to the first coil 220. The second coupling part 420 may include a hole into which a protrusion of the housing 210 is inserted. The second coupling part 420 may be disposed on a lower surface of the housing 210. The second coupling part 420 may be fixed to the housing 210.

[0087] Either the first coupling portion 410 or the second coupling portion 420 of the substrate 400 may be referred to as the 'first region', and the other may be referred to as the 'second region'. The first region of the substrate 400 may be connected to the housing 210, and the second region of the substrate 400 may be connected to the base 110. The first region of the substrate 400 may move with the movement of the housing 210. The first region may include a main body portion in which the second coil 230 is disposed. The substrate 400 may include an elastic connecting portion connecting the first region and the second region. In the first embodiment, the elastic connecting portion may connect the main body portion and the second region. In the second embodiment, the first region may include one end portion connected to the housing 210 and an elastic connecting portion connecting the one end portion to the main body portion.

[0088] The substrate 400 may include a connecting portion 430. The connecting portion 430 may be an 'elastic connecting portion'. The connecting portion 430 may connect the first connecting portion 410 and the second connecting portion 420. The connecting portion 430 may include a flexible portion. The connecting portion 430 may be flexible. The connecting portion 430 may be formed of FPCB. The connecting portion 430 may have a curved shape. The connecting portion 430 may have a shape curved multiple times. The connecting portion 430 may include a first portion having a shape curved multiple times. The first portion of the substrate 400 may overlap with the second coil 230 in the optical axis direction.

[0089] The substrate 400 may include a terminal portion. The terminal portion may include terminals 440. The terminal portion may extend from the first coupling portion 410. The terminal portion may extend downward from the first coupling portion 410. The terminal portion may be bent from the first coupling portion 410. The terminal 440 may include a plurality of terminals. The terminal 440 may include four terminals electrically connected to the first Hall sensor 621, four terminals electrically connected to the second Hall sensor 622, two terminals electrically connected to the 2-1 coil 231 and the 2-2 coil 232, two terminals electrically connected to the 2-3 coil 233 and the 2-4 coil 234, and four terminals electrically connected to the driver IC 610. That is, a total of 16 terminals may be included. In a modified example, the terminals 440 may include seven terminals electrically connected to the first and second Hall sensors 621 and 622, two terminals electrically connected to the 2-1 coil 231 and the 2-2 coil 232, two terminals electrically connected to the 2-3 coil 233 and the 2-4 coil 234, and four terminals electrically connected to the driver IC 610. That is, a total of 15 terminals may be included.

[0090] The lens driving device 10 may include a ball 500. The ball 500 may guide movement between the base 110, the housing 210, the holder 310, and the mover 330. The ball 500 may guide movement of the housing 210, the holder 310, and the mover 330 during AF driving and OIS driving. The ball 500 may be formed in a spherical shape. The ball 500 may rotate to guide movement of the housing 210, the holder 310, and the mover 330.

[0091] The lens driving device 10 may include a first ball 510. The first ball 510 may be in contact with the housing 210 and the mover 330. The first ball 510 may be disposed between the housing 210 and the mover 330. The first ball 510 may connect the housing 210 and the mover 330. The first ball 510 may be in contact with the housing 210 at two or more points. The first ball 510 may guide the mover 330 to move in a first direction perpendicular to the optical axis direction relative to the housing 210. The first ball 510 may be an OIS-X guide ball. The first ball 510 may include multiple balls. The first balls 510 may include a total of six balls, three on each side.

[0092] The lens driving device 10 may include a second ball 520. The second ball 520 may be disposed between the mover 330 and the holder 310. The second ball 520 may contact the mover 330 and the holder 310. The second ball 520 may be disposed between the mover 330 and the holder 310. The second ball 520 may connect the mover 330 and the holder 310. The second ball 520 may guide the holder 310 to move in a second direction perpendicular to the optical axis direction and the first direction relative to the mover 330. The second ball 520 may be an OIS-Y guide ball. Alternatively, the second ball 520 may guide the holder 310 to move in a first direction perpendicular to the optical axis direction relative to the mover 330. In this case, the first ball 510 may guide the holder 310 to move in the second direction perpendicular to the optical axis direction and the first direction relative to the mover 330. The second ball 520 may include a plurality of balls. The second ball 520 may include four balls.

[0093] The lens driving device 10 may include a third ball 530. The third ball 530 may be in contact with the housing 210 and the base 110. The third ball 530 may be disposed between the housing 210 and the base 110. The third ball 530 may connect the housing 210 and the base 110. The third ball 530 may guide the housing 210 to move in the optical axis direction relative to the base 110. The third ball 530 may be an AF guide ball. The third ball 530 may include multiple balls. The third ball 530 may include four balls.

[0094] The lens driving device 10 may include a driver IC 610. The driver IC 610 may include a Hall element that senses the first magnet 120. The driver IC 610 may be disposed on the substrate 400. The driver IC 610 may be electrically connected to the first coil 220. The driver IC 610 may be disposed at a position corresponding to the first magnet 120. The driver IC 610 may control a current applied to the first coil 220. The Hall element may sense the magnetic force of the first magnet 120. The Hall element may sense the position or movement of the first magnet 120. The driver IC 610 may sense the position of the first magnet 120 and adjust the current applied to the first coil 220. That is, the driver IC 610 may perform AF feedback control.

[0095] The lens driving device 10 may include a Hall sensor 620. The Hall sensor 620 may be disposed on the substrate 400. The Hall sensor 620 may sense the second magnet 320. The Hall sensor 620 may sense the magnetic force of the second magnet 320. The Hall sensor 620 may be disposed at a position corresponding to the second magnet 320. The Hall sensor 620 may sense the position or movement of the second magnet 320. A value sensed by the Hall sensor 620 may be used for OIS feedback control.

[0096] The Hall sensor 620 may include a first Hall sensor 621. The first Hall sensor 621 may sense the second-first magnet 321. The first Hall sensor 621 may be disposed at a position corresponding to the second-first magnet 321. The first Hall sensor 621 may sense movement of the mover 330 in the x-direction. The first Hall sensor 621 may be an OIS-X sensor.

[0097] The Hall sensor 620 may include a second Hall sensor 622. The second Hall sensor 622 may sense the second-2 magnet 322. The second Hall sensor 622 may be disposed at a position corresponding to the second-2 magnet 322. The second Hall sensor 622 may sense movement of the holder 310 in the y direction. The second Hall sensor 622 may be an OIS-Y sensor. Conversely, the first Hall sensor 621 may sense movement of the mover 330 or the holder 310 in the y direction, and the second Hall sensor 622 may sense movement of the mover 330 or the holder 310 in the x direction.

[0098] In this embodiment, when a current is applied to the 2-1 coil 231 and the 2-2 coil 232, the 2-1 magnet 321 can move in a first direction (x-direction) perpendicular to the optical axis direction due to electromagnetic interaction between the 2-1 and 2-2 coils 231, 232 and the 2-1 magnet 321 (see OIS-X in FIG. 19). At this time, the mover 330 and the holder 310 can also move in the first direction perpendicular to the optical axis direction together with the 2-1 magnet 321.

[0099] In this embodiment, when a current is applied to the 2-3 coil 233 and the 2-4 coil 234, the 2-2 magnet 322 can move in a second direction (y-direction) perpendicular to the optical axis direction and the first direction due to electromagnetic interaction between the 2-3 and 2-4 coils 233, 234 and the 2-2 magnet 322 (see OIS-Y in FIG. 19). At this time, the holder 310 can also move together with the 2-2 magnet 322 in the second direction perpendicular to the optical axis direction and the first direction.

[0100] In this embodiment, when a forward current is applied to the first coil 220, the first coil 220 can move upward along the optical axis (z-axis) due to electromagnetic interaction between the first coil 220 and the first magnet 120. At this time, the housing 210, the mover 330, and the holder 310 can also move upward together with the first coil 220 (see A-F in FIG. 20).

[0101] Furthermore, when a reverse current is applied to the first coil 220, the second coil 220 can move downward along the optical axis due to electromagnetic interaction between the first coil 220 and the first magnet 120. At this time, the housing 210, the mover 330, and the holder 310 can also move downward together with the first coil 220 (see AF ​​in FIG. 20).

[0102] In a modified example, the first coil 220 and the first magnet 120 may be disposed at different positions. The first magnet 120 may be disposed in the housing 210, and the first coil 220 may be disposed in the base 110. In addition, the second coil 230 and the second magnet 320 may also be disposed at different positions. The second coil 230 may be disposed in the holder 310 and the mover 330, and the second magnet 320 may be disposed in the housing 210.

[0103] In this embodiment, the AF unit (a part that moves as a driving unit) may include an AF coil, an OIS coil, and a yoke. It may also include a FPCB for applying current to the driving unit. In this case, a portion of the FPCB may move together with the AF unit. The FPCB can be separated into multiple legs so as not to interfere with the AF drive.

[0104] In this embodiment, the magnet for driving the OIS on one axis is mounted on the mover 330, and the magnet for driving the other axis is mounted on the holder 310, so they can be driven separately. Balls can be arranged on each layer to drive the left and right OIS. A spherical groove can be formed on one side of the ball rolling part to allow it to roll in place. A yoke can be inserted inside the OIS coil to maintain the OIS posture.

[0105] In this embodiment, since the OIS coil is disposed inside the AF driver, it is easy to ensure the linearity and hall linearity of the OIS drive. Here, the hall linearity may be linearity associated with the hall element and / or hall sensor. This embodiment has the advantage that no OIS crosstalk occurs during AF drive. That is, hall signal interference on the OIS side can be minimized during AF drive. The FPCB can provide a restoring force for the AF unit.

[0106] A lens driving device according to a modified example will be described below with reference to the drawings.

[0107] Figure 21 is a plan view and an enlarged view illustrating the third ball and related configuration of a lens driving device according to a modified example; Figure 22 is a drawing illustrating another modified example of the third ball and related configuration illustrated in Figure 21; Figures 23 and 24 are oblique views illustrating the arrangement of the third magnet and fourth magnet of a lens driving device according to a modified example; Figure 25 is an oblique view and a partially enlarged perspective view illustrating the arrangement of the housing cover, fifth magnet, and sixth magnet of a lens driving device according to a modified example; Figure 26 (a) is a drawing illustrating the housing cover and fifth magnet, (b) is a drawing illustrating the arrangement of the sixth magnet, and Figure 27 is a drawing illustrating the arrangement of the second yoke of a lens driving device according to a modified example.

[0108] The lens driving device according to the modified example will be described mainly with respect to differences from the lens driving device according to the present embodiment. For the explanation of the configuration of the lens driving device according to the modified example that is not described below, the corresponding explanation of the lens driving device according to the present embodiment can be applied by analogy.

[0109] In a modified example, as shown in FIGS. 21 and 22, two grooves for guiding the third ball 530 may be formed in the housing 210 and only one groove may be formed in the base 110.

[0110] The lens driving device may include a third ball 530 in contact with the housing 210 and the base 110. The third ball 530 may include a third ball 531 disposed on one side of the first coil 220 and a third ball 532 disposed on the other side of the first coil 220. The base 110 may include a first surface facing the housing 210 and a groove 111 recessed into the first surface of the base 110. The third ball 531 may be disposed on the first surface of the base 110. The third ball 532 may be disposed in the groove 111 of the base 110. No groove may be formed in the region of the first surface of the base 110 where the third ball 531 is disposed. The housing 210 may include a protrusion 215 protruding toward the first surface of the base 110. The third ball 530 may be disposed on the protrusion 215 of the housing 210. A second groove 212 may be formed in the protrusion 215 of the housing 210 , and the third ball 530 may be disposed in the second groove 212 .

[0111] The 3-1 ball 531 may be a first unit ball, and the 3-2 ball 532 may be a second unit ball.

[0112] In a variant, the radius (r1) of the 3-1 ball 531 may be different from the radius (r2) of the 3-2 ball 532. Alternatively, the radius (r1) of the 3-1 ball 531 may be the same as the radius (r2) of the 3-2 ball 532.

[0113] As shown in FIG. 21, the groove 111 of the base 110 may be formed only at a position corresponding to the 3-2 ball 532 and not at a position corresponding to the 3-1 ball 531. 21, in a modified example, the cross section of the groove 111 of the base 110 may include three straight lines forming a right angle with each other. That is, the cross section of the groove 111 of the base 110 may be formed as a rectangle with one side open. In this case, the third ball 530 may contact the groove 111 of the base 110 at three points.

[0114] As shown in FIG. 22, the second groove 212 of the housing 212 and the groove 111 of the base 110 may be modified in various ways. As shown in FIGS. 22(a) and 22(c), the cross section of the groove 212a of the housing 212 in which the 3-1 ball 531 is disposed may be formed in a triangular shape with one side open. In this case, the 3-1 ball 531 may contact the groove 212a of the housing 210 at two points. As shown in FIG. 22(b), the cross section of the groove 212b of the housing 212 in which the 3-1 ball 531 is disposed may be formed in a pentagonal shape with one side open. Compared to the groove 212a of the previous embodiment, the groove 212b may be recessed more deeply. The 3-1 ball 531 may contact the groove 212b of the housing 210 at two points. 22(a), (b), and (c), the cross section of the groove 212a of the housing 212 in which the 3-2 ball 532 is disposed may be formed in a triangular shape with one side open. In this case, the 3-2 ball 532 may contact the groove 212a of the housing 210 at two points.

[0115] As shown in FIGS. 22(a) and 22(c), the portion of the base 110 where the 3-1 ball 531 is disposed may be formed as a flat surface. Alternatively, as shown in FIG. 22(b), the portion of the base 110 where the 3-1 ball 531 is disposed may be formed as a protrusion 111b. As shown in FIG. 22(a), the cross section of the groove 111a of the base 110 where the 3-2 ball 532 is disposed may be a trapezoidal shape with one side open. In this case, the 3-2 ball 532 may contact the groove 111a of the base 110 at three points. As shown in FIGS. 22(b) and 22(c), the cross section of the groove 111a of the base 110 where the 3-2 ball 532 is disposed may be a triangular shape with one side open. In this case, the 3-2 ball 532 may contact the groove 111a of the base 110 at two points.

[0116] In a modified example, as shown in FIGS. 23 and 24, the first yoke 240 may be omitted and a magnet may be added to generate an attractive force between the base 110 and the housing 210.

[0117] The lens driving device may include a third magnet 710 disposed on the base 110. The third magnet 710 may be disposed on an outer surface of the base 110. The lens driving device may include a fourth magnet 720 disposed on the housing 210. The fourth magnet 720 may be disposed on the outer surface of the housing 210. The fourth magnet 720 may be disposed at a position corresponding to the third magnet 710 so that an attractive force acts between the fourth magnet 720 and the third magnet 710. As a result, the housing 210 may press the third ball 530 toward the base 110. Therefore, contact between the third ball 530, the housing 210, and the base 110 may be maintained.

[0118] In a modified example, as shown in FIGS. 25 and 26, the second yoke 250 may be omitted, and a magnet may be added to press the holder 310 and the mover 330 toward the housing 210.

[0119] The lens driver may include a housing cover 260 coupled to the housing 210 and disposed on the holder 310. The housing cover 260 may be a 'frame cover'. The lens driver may include a fifth magnet 730 disposed on the housing cover 260. The fifth magnet 730 may be disposed on the underside of the housing cover 260. The lens driver may include a sixth magnet 740 disposed on the holder 310. The mover 330 and the second ball 520 may be disposed below the holder 310. The sixth magnet 740 may be disposed at a position corresponding to the fifth magnet 730 so that a repulsive force acts between the sixth magnet 740 and the fifth magnet 730. This allows the holder 310 to press the second ball 520 toward the mover 330. Therefore, contact between the second ball 520, the holder 310, and the mover 330 may be maintained. In addition, the holder 310 may press the first ball 510 toward the housing 210 via the mover 330. Therefore, contact between the first ball 510, the mover 330 and the housing 210 can be maintained.

[0120] In a modified example, as shown in FIG. 27, the second yoke 250 disposed in the housing 210 may be omitted, and the second yoke 150 may be disposed in the base 110.

[0121] The lens driving device may include a second yoke 150 disposed on the base 110 at a position corresponding to the second magnet 320 so that an attractive force acts between the second magnet 320 and the second yoke 150. This allows the mover 330 to press the first ball 510 toward the housing 110. Therefore, contact between the first ball 510, the mover 330, and the housing 210 may be maintained. The base 110 may include a protrusion 112 that protrudes toward the second magnet 320. The second yoke 150 may be disposed on an upper surface of the protrusion 112. At least a portion of the protrusion 112 may be disposed within the second coil 230.

[0122] In another modification, the second yoke that induces an attractive force with the second magnet 320 may be disposed on the substrate 400, not on the base 110 or the housing 210. The second yoke may be disposed at a position on the substrate 400 corresponding to the second magnet 320.

[0123] In this embodiment, the mover may include first to third frames. The first frame may include the housing 210, the second frame may include the holder 310, and the third frame may include a frame. In this case, the frames may include the mover 330. The housing 210 may be the first frame. The holder 310 may be the second frame. The mover 330 may be the third frame. Any one of the housing 210, the holder 310, and the mover 330 may be referred to as the 'first frame', another as the 'second frame', and the remaining one as the 'third frame'.

[0124] One of the fifth magnet 730 and the sixth magnet 740 may be referred to as a 'first repulsive magnet,' and the other may be referred to as a 'second repulsive magnet.' The first repulsive magnet may be disposed on the second frame.

[0125] The lens driving magnetic field component 10 may include a second repulsive magnet disposed on the first frame cover at a position corresponding to the first repulsive magnet. A repulsive force may act between the first repulsive magnet and the second repulsive magnet in the optical axis direction. The lens driving device 10 may include a third frame disposed between the first frame and the second frame. The lens driving device 10 may include a fifth magnet disposed in the third frame. The ordinal numbers used for the third magnet 710, the fourth magnet 720, the fifth magnet 730, and the sixth magnet 740 are used to distinguish between the magnets and may be written arbitrarily. In other words, if the third magnet 710 and the fourth magnet 720 are omitted in the claims, one of the fifth magnet 730 and the sixth magnet 740 may be the third magnet and the other may be the fourth magnet.

[0126] Hereinafter, a camera module according to this embodiment will be described with reference to the drawings.

[0127] FIG. 28 is an exploded perspective view of the camera module according to this embodiment.

[0128] The camera module may be a camera device.

[0129] The camera module may include a lens module 20. The lens module 20 may include at least one lens. The lens may be disposed at a position corresponding to the image sensor 60. The lens module 20 may include a lens and a barrel. The lens module 20 may be coupled to a bobbin 210 of the lens driver 10. The lens module 20 may be coupled to the bobbin 210 by a screw connection and / or an adhesive. The lens module 20 may move integrally with the bobbin 210.

[0130] The camera module may include a filter 30. The filter 30 may serve to block light of a specific frequency band from passing through the lens module 20 from entering the image sensor 60. The filter 30 may be arranged parallel to the xy plane. The filter 30 may be arranged between the lens module 20 and the image sensor 60. The filter 30 may be arranged on the sensor base 40. The filter 30 may include an infrared filter. The infrared filter may block light in the infrared region from entering the image sensor 60. The infrared filter may include an infrared reflective filter or an infrared absorbing filter.

[0131] The camera module may include a sensor base 40. The sensor base 40 may be disposed between the lens driver 10 and the printed circuit board 50. The sensor base 40 may include a protrusion 41 on which the filter 30 is disposed. An opening may be formed in the portion of the sensor base 40 on 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 may be disposed between the sensor base 40 and the lens driver 10. The adhesive member may adhere the lens driver 10 to the upper surface of the sensor base 40. The adhesive member may be configured to prevent foreign substances from entering the interior of the lens driver 10. The adhesive member may include one or more of epoxy, a heat-curing adhesive, and an ultraviolet-curing adhesive.

[0132] The camera module is mounted on a printed circuit board 50 (PCB). The printed circuit board 50 may include a printed circuit board (PCB) or a circuit board. The lens driver 10 may be disposed on the printed circuit board 50. The sensor base 40 may be disposed between the printed circuit board 50 and the lens driver 10. The printed circuit board 50 may be electrically connected to the lens driver 10. The image sensor 60 may be disposed on the printed circuit board 50. The printed circuit board 50 may include various circuits, elements, a control unit, etc. for converting an image formed on the image sensor 60 into an electrical signal and transmitting the electrical signal to an external device.

[0133] The camera module may include an image sensor 60. The image sensor 60 may be configured to form an image when light passing through the lens and the filter 30 is incident on the image sensor 60. The image sensor 60 may be mounted on a printed circuit board 50. The image sensor 60 may be electrically connected to the printed circuit board 50. For example, the image sensor 60 may be mounted on the printed circuit board 50 using surface mount technology (SMT). The image sensor 60 can be mounted on the printed circuit board 50 using a mounting technology. As another example, the image sensor 60 can be mounted on the printed circuit board 50 using flip chip technology. The image sensor 60 can be disposed so that its optical axis coincides with that of the lens. That is, the optical axis of the image sensor 60 and the optical axis of the lens can be aligned. The image sensor 60 can convert light irradiated onto an effective image area of ​​the image sensor 60 into an electrical signal. The image sensor 60 can be any of a charge coupled device (CCD), a metal oxide semi-conductor (MOS), a CPD, and a CID.

[0134] The camera module may include a motion sensor 70. The motion sensor 70 may be mounted on the printed circuit board 50. The motion sensor 70 may be electrically connected to the control unit 80 via a circuit pattern provided on the printed circuit board 50. The motion sensor 70 may output rotational angular velocity information according to the movement of the camera module. The motion sensor 70 may include a two-axis or three-axis gyro sensor or an angular velocity sensor.

[0135] The camera module may include a control unit 80. The control unit 80 may be disposed on the printed circuit board 50. The control unit 80 may be electrically connected to the coils 130 of the lens driving device 10. The control unit 80 may individually control the direction, strength, and amplitude of the current supplied to the coils 130. The control unit 80 may control the lens driving device 10 to perform an autofocus function. The control unit 80 may be electrically connected to a Hall sensor 140. The control unit 80 may sense the position of the mover 200 through the Hall sensor 140 and perform autofocus feedback control on the lens driving device 10.

[0136] The camera module may include a connector 90. The connector 90 may be electrically connected to the printed circuit board 50. The connector 90 may include a port for electrically connecting to an external device.

[0137] The optical device according to this embodiment will be described below with reference to the drawings.

[0138] FIG. 29 is a perspective view of the optical device according to this embodiment. The optical device may include one or more of a mobile phone, a smartphone, a portable communication device, a portable smart device, a portable terminal, a digital camera, a computer, a laptop computer, a digital broadcasting terminal, a PDA (Personal Digital Assistant), a PMP (Portable Multimedia Player), and a navigation system. However, the type of optical device is not limited thereto, and any device for taking images or photographs may also be included in the optical device.

[0139] The optical device may include a main body 1. The main body 1 may form the exterior of the optical device. The main body 1 may house a camera module 2. A display 3 may be disposed on a first surface of the main body 1. For example, the display 3 and the camera module 2 may be disposed on the first surface of the main body 1, and an additional camera module 2 may be disposed on a second surface of the main body 1 opposite to the first surface.

[0140] The optical device may include a camera module 2. The camera module 2 may be disposed in the main body 1. At least a portion of the camera module 2 may be accommodated inside the main body 1. A plurality of camera modules 2 may be provided. The camera module 2 may include dual, triple, or more camera modules. The camera module 2 may be disposed on each of a first surface of the main body 1 and a second surface opposite to the first surface of the main body 1. The camera module 2 may capture an image and / or video of a subject.

[0141] The optical device may include a display 3. The display 3 may be disposed on the main body 1. The display 3 may be disposed on a first surface of the main body 1. The display 3 may output images and / or videos captured by the camera module 2.

[0142] Although the embodiments of the present invention have been described above with reference to the accompanying drawings, it should be understood by those skilled in the art that the present invention may be embodied 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 respects and are not limiting.

Claims

1. With base; a first frame disposed on the base; a substrate disposed between the base and the first frame; a second frame disposed within the first frame; a third frame disposed between the first frame and the second frame; a second magnet disposed on the second frame; a second coil disposed between the first frame and the substrate and positioned corresponding to the second magnet; and The second coil moves the second frame in a direction perpendicular to the optical axis direction, The first frame moves in the optical axis direction, and the second frame moves in a direction perpendicular to the optical axis direction, The substrate is moved by the movement of the first frame.

2. the substrate includes a first region coupled to the base, a second region coupled to the first frame, and an elastic connecting portion connecting the first region and the second region; The lens driving device according to claim 1 , wherein the elastic connection portion of the substrate includes a flexible portion.

3. The elastic connection portion of the substrate includes a multi-bend shape; The lens driving device according to claim 2 , wherein the elastic connecting portion of the substrate overlaps with the second coil in the optical axis direction.

4. The lens driving device according to claim 1 , wherein the substrate is formed in a shape symmetrical with respect to the optical axis.

5. the mover includes the first to third frames, the first frame includes a housing, the second frame includes a holder, and the third frame includes a frame; The lens driving device a first ball disposed between the housing and the frame; The lens driving device according to claim 1 , further comprising: a second ball disposed between the frame and the holder.

6. the housing includes a first groove in which the first ball is disposed; The first ball contacts the housing at two or more points, The lens driving device according to claim 5 , wherein the first groove of the housing is formed to be longer than a diameter of the first ball in a first direction perpendicular to the optical axis direction.

7. the frame includes a first groove formed on an upper surface of the frame and in which the second ball is disposed; The lens driving device according to claim 6 , wherein the first groove of the frame is formed to be longer than a diameter of the second ball in the optical axis direction and in a second direction perpendicular to the first direction.

8. the frame includes a second groove formed on a lower surface of the frame and in which the first ball is disposed; the second groove of the frame is formed in a shape corresponding to at least a portion of the first ball, the holder includes a groove in which the second ball is disposed; The lens driving device according to claim 7 , wherein the groove of the holder is formed in a shape corresponding to at least a part of the second ball.

9. the first ball guides the frame to move relative to the housing in a first direction perpendicular to the optical axis direction, The lens driving device according to claim 5 , wherein the second ball guides the holder to move relative to the frame in a second direction perpendicular to the optical axis direction and the first direction.

10. With base; a housing disposed on the base; a substrate disposed between the base and the housing; a holder disposed within the housing; a first magnet and a first coil for moving the housing and the holder in the optical axis direction; a second magnet disposed in the holder; a second coil disposed between the housing and the substrate and positioned corresponding to the second magnet; and The second coil moves the holder in a direction perpendicular to the optical axis direction, a first region of the substrate coupled to the housing and a second region of the substrate coupled to the base; The lens driving device, wherein the first region of the substrate moves with the movement of the housing.

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