KR102159746B1 - Lens moving unit and camera module having the same - Google Patents

Abstract

The lens driving unit according to the present embodiment includes a bobbin in which at least one lens is installed inside and a first coil is installed on an outer circumferential surface thereof, and a housing supporting a magnet disposed around the bobbin, and the magnet and A first lens driving unit for moving the bobbin and the first coil in a first direction parallel to an optical axis by a first coil interaction; And a base disposed spaced apart from the bobbin and the first lens driving unit by a predetermined distance, and supporting the first lens driving unit to be movable in second and third directions with respect to the base, and supplying power to the first coil. A support member capable of, a second coil disposed opposite the magnet of the first lens driving unit, and a detection sensor detecting positions of the second lens driving unit in the second and third directions with respect to the base A second lens driving unit having a circuit board and configured to move the entire first lens driving unit including the bobbin in second and third directions different from each other by an interaction between the magnet and the second coil; It may include.

Description

Lens moving unit and camera module having the same

The present embodiment relates to a lens driving device and a camera module having the same.

Camera modules for ultra-compact and low power consumption are difficult to apply technologies such as VCM, which have been used in conventional camera modules, and related research has been actively conducted.

In the case of a camera module mounted on a small electronic product such as a smartphone, the camera module may be frequently shocked during use, and the camera module may be slightly shaken due to the user's hand shaking while shooting. In view of this point, in recent years, there is a demand for development of a technology for additionally installing a camera module for preventing hand shake.

Such a hand shake prevention means is being studied in various ways. In the case of a technology capable of correcting hand shake by moving the optical module in the x, y axis corresponding to a plane perpendicular to the optical axis, the optical system is vertically aligned with the optical axis for image correction. The structure is complex and not suitable for miniaturization because it moves in a plane.

The present embodiment provides a lens driving unit including an image stabilization function capable of miniaturization and improving operational reliability, and a camera module having the same.

The lens driving unit according to the present embodiment includes a bobbin in which at least one lens is installed inside and a first coil is installed on an outer circumferential surface thereof, and a housing supporting a magnet disposed around the bobbin, and the magnet and A first lens driving unit for moving the bobbin and the first coil in a first direction parallel to an optical axis by a first coil interaction; And a base disposed spaced apart from the bobbin and the first lens driving unit by a predetermined distance, and supporting the first lens driving unit to be movable in second and third directions with respect to the base, and supplying power to the first coil. A support member capable of, a second coil disposed opposite the magnet of the first lens driving unit, and a detection sensor detecting positions of the second lens driving unit in the second and third directions with respect to the base A second lens driving unit having a circuit board and configured to move the entire first lens driving unit including the bobbin in second and third directions different from each other by an interaction between the magnet and the second coil; It may include.

The first lens driving unit may include an octagonal bobbin having at least four straight surfaces and corner surfaces connecting them; A first coil wound around the outer peripheral surface of the bobbin; A magnet disposed at a position corresponding to the linear surface of the first coil; A housing to which the magnet is fixed; And an inner frame is coupled to the bobbin, and an outer frame is an upper and lower elastic member coupled to the housing.

It may further include a cover member coupled to the base and surrounding the first and second lens driving units.

The bobbin includes: a first stopper having a first height protruding from an upper surface; And a second stopper protruding in a circumferential direction on a side surface of the upper surface, wherein the first stopper prevents a collision between the inner surface of the cover member and the bobbin body, and the second stopper is formed between the bobbin and the base. Collision can be avoided.

The housing may have a seating groove having a size corresponding to the second stopper at a position corresponding to the second stopper.

The housing includes a first surface on which the four magnets are installed; A second surface on which the first surfaces are interconnected and on which the support member is disposed; A third stopper protruding from an upper surface to prevent interference with the cover member; And a fourth stopper protruding from the bottom surface to prevent interference with the base.

The second surface may include an escape groove that prevents interference between the support member and the housing, and may further include a step portion formed on the upper side of the escape groove.

In addition, the second surface may further include a partition wall for receiving the damping silicon.

The support member may be integrally configured with the upper elastic member.

The support member includes a connection part connected to the upper elastic member; First and second elastic deformation portions extending from the connection portion; And a fixing part fixedly coupled to the base.

Alternatively, at least four support members may be provided to support the second lens driving unit, and at least two may further include terminal portions to which different polarities are applied.

Alternatively, the support member may include a connection part connected to the upper elastic member; First and second elastic deformation portions extending from the connection portion; A fixing part fixedly coupled to the base; And a damping connection part interposed between the first and second elastic deformation parts and interposed in the space formed by the partition wall.

The connection portion may further include a through hole formed in the center, and the left and right sides of the through hole may be bent.

The first and second elastic deformation portions may be provided in a curved shape at least one or more times to form a pattern of a predetermined shape.

The first and second elastic deformable portions may be formed with the damping connecting portion interposed therebetween, so that the upper and lower shapes of the damping connecting portion may correspond to each other.

The first and second elastic deformation portions may be any one of an N-shape and a zigzag shape in which a straight portion is formed in a direction parallel to the optical axis through at least four bends.

The first and second elastic deformation portions may be provided in the form of a wire without a pattern.

The fixing part may be formed wider than the width of the first and second elastic deformation parts.

The base may have a support member seating groove formed in a concave position at a position corresponding to the support member.

The support member seating groove may be formed at four corners of the base.

The second coil may be installed on an upper surface of a circuit board installed above the base.

The second coil may be provided as a substrate having a patterned coil on an upper surface of a circuit board installed on the upper side of the base, and may be laminated and coupled to the circuit board.

The second coil may be integrally formed on the upper surface of the base in the form of a surface electrode.

The detection sensor may be any one of a hall sensor and a photo reflector that is aligned with the center of the second coil and is inserted into and coupled to the detection sensor mounting groove formed on the base.

A total of two detection sensors are provided, and virtual lines connecting the center of the base and the center of each of the detection sensors may be disposed perpendicular to each other.

The magnet may be used both as a magnet for autofocus moving the bobbin in the first direction and a magnet for camera shake correction moving the housing in the second and third directions.

The camera module according to the present embodiment includes an image sensor; A printed circuit board on which the image sensor is mounted; And a lens holder driving device configured as described above.

It is possible to provide a lens driving unit including a camera shake correction function capable of miniaturization by lowering the height of the camera module and improving operational reliability.

In addition, without assembling a separate support member, the housing in which a plurality of lenses are installed can be elastically supported through an integrated support member formed by bending a part of the upper elastic member, thereby improving assembly performance.

In addition, since a damping unit capable of reducing micro-vibration generated from the support member is provided, more stable hand shake correction control is possible.

1 is a schematic perspective view of a lens driving unit according to this embodiment,
Figure 2 is an exploded perspective view of Figure 1,
3 is a view with the cover member removed from FIG. 1;
4 is a perspective view of a bobbin,
5 and 6 are perspective and rear perspective views of the housing,
7 is a rear perspective view of a housing in which a bobbin and a lower elastic member are coupled,
8 is a plan view showing an initial state of the upper elastic member according to the present embodiment;
9 is a view showing a state in which the upper elastic member is separated into first and second upper elastic members;
10 is an enlarged view of part A of FIG. 3;
11 and 12 are views showing a base, a circuit board, and a second coil according to the present embodiment;
13 is a plan view showing a coupling relationship between a second coil coupled to a circuit board;
14 is a view showing the bottom surface of the base;
15 is a cross-sectional view II′ of the lens driving unit according to the present embodiment;
16 is a cross-sectional view II-II' of the lens driving unit according to the present embodiment, and,
17 is a III-III' cross-sectional view of the lens driving unit according to the present embodiment.

Hereinafter, an embodiment of the present embodiment will be described with reference to the accompanying drawings.

1 is a schematic perspective view of a lens driving unit according to this embodiment, FIG. 2 is an exploded perspective view of FIG. 1, FIG. 3 is a view with a cover member removed from FIG. 1, FIG. 4 is a perspective view of a bobbin, and FIGS. 5 and 6 A perspective view and a rear perspective view of the housing, FIG. 7 is a rear perspective view of the housing in which the bobbin and the lower elastic member are combined, FIG. 8 is a plan view showing the initial state of the upper elastic member according to the present embodiment, and FIG. 9 is a diagram illustrating an upper elastic member. A view showing a state separated by the first and second upper elastic members, FIG. 10 is an enlarged view of part A of FIG. 3, and FIGS. 11 and 12 are views showing a base, a circuit board, and a second coil according to the present embodiment. In one drawing, FIG. 13 is a plan view showing a coupling relationship between a second coil coupled to a circuit board, FIG. 14 is a view showing a bottom surface of a base, and FIG. 15 is a cross-sectional view II' of a lens driving unit according to the present embodiment; 16 is a cross-sectional view II-II' of the lens driving unit according to the present embodiment, and FIG. 17 is a cross-sectional view III-III' of the lens driving unit according to the present embodiment.

Meanwhile, in FIGS. 1 to 17, a Cartesian coordinate system (x, y, z) may be used. In the drawing, the x-axis and y-axis refer to a plane perpendicular to the optical axis. For convenience, the optical axis direction (z-axis direction) may be referred to as a first direction, an x-axis direction as a second direction, and a y-axis direction as a third direction. .

The image stabilization device applied to the small camera module of a mobile device such as a smartphone or tablet PC is to prevent the outline of the captured image from being clearly formed due to vibration caused by the user's hand shake when shooting a still image. It means a configured device. In addition, the auto-focusing device is a device that automatically focuses an image of a subject on the image sensor surface. Such an image stabilization device and an auto-focusing device can be configured in various ways. In the present embodiment, an optical module composed of a plurality of lenses is moved in a direction parallel to the optical axis or a plane perpendicular to the optical axis. Such an auto-focusing operation and a camera shake correction operation may be performed.

As shown in FIGS. 1 and 2, the lens driving unit according to the present exemplary embodiment may include a first lens driving unit 100 and a second lens driving unit 200. In this case, the first lens driving unit 100 is a lens driving unit for autofocus, and the second lens driving unit 200 is a lens driving unit for image stabilization.

As shown in FIGS. 2 and 3, the first lens driving unit 100 may include a bobbin 110, a first coil 120, a magnet 130, and a housing 140.

The bobbin 110 may be installed in the inner space of the housing 140 to reciprocate in a direction parallel to the optical axis. A first coil 120 to be described later may be installed on the outer circumferential surface of the bobbin 110 and the first coil 120 may be installed on the outer circumferential surface to enable electromagnetic interaction with the magnet 130. In addition, the bobbin 110 is elastically supported by the upper and lower elastic members 150 and 160, and moves in a first direction parallel to the optical axis to perform an auto-focusing function.

Although not shown, the bobbin 110 may include a lens barrel (not shown) in which at least one lens is installed. The lens barrel can be coupled to the inside of the bobbin 110 in various ways. For example, a female thread is formed on the inner circumferential surface of the bobbin 110, and a male thread corresponding to the thread is formed on the outer circumferential surface of the lens barrel, and the lens barrel can be coupled to the bobbin 110 by screwing them. However, this is not limited thereto, and the lens barrel may be directly fixed to the inside of the bobbin 110 by a method other than screwing without forming a thread on the inner circumferential surface of the bobbin 110. Alternatively, the one or more lenses may be integrally formed with the bobbin 110 without a lens barrel. The lens coupled to the lens barrel may be configured as a single sheet, or two or more lenses may be configured to form an optical system.

Meanwhile, the bobbin 110 may include a first stopper 111 and/or a second stopper 112.

When the bobbin 110 moves in a first direction parallel to the optical axis for an auto-focusing function, the first stopper 111 moves beyond a prescribed range due to external impact, etc., on the body of the bobbin 110 It is possible to prevent the side surface from directly colliding with the inner surface of the cover member 300 shown in FIGS. 1 and 15. In addition, the first stopper 111 may also serve to guide the installation position of the upper elastic member 150. According to this embodiment, as shown in FIG. 4, a plurality of the first stoppers 111 may be formed to protrude upwardly to a first height h1, and at least four may be formed to protrude in the form of a polygonal column. I can. In addition, the first stopper 111 may be provided in a symmetrical structure with respect to the center of the bobbin 110, or may be provided in an asymmetrical structure in which interference with other parts is excluded as shown.

When the bobbin 110 moves in a first direction parallel to the optical axis for an auto-focusing function, the second stopper 112 moves beyond a prescribed range due to an external impact or the like, the bottom of the body of the bobbin 110 It is possible to prevent the surface from directly colliding with the upper surfaces of the base 210 and the circuit board 250 shown in the cross-sectional views of FIGS. 2 and 16. According to this embodiment, the second stopper 112 may be formed to protrude in the circumferential direction at the edge of the bobbin 110, and the housing 140 has a seating groove at a position corresponding to the second stopper 112 146 can be formed.

When the second stopper 112 and the bottom surface 146a (refer to FIG. 5) of the seating groove 146 are in contact with the initial position, the auto-focusing function is performed as in unidirectional control in a conventional voice coil motor. The auto-focusing function may be implemented through an operation in which the bobbin 110 rises when the current is supplied to the first coil 120 and the bobbin 120 falls when the current is turned off.

If the position where the second stopper 112 and the bottom surface 146a of the seating groove 146 are spaced apart by a certain distance is configured as the initial position, the auto-focusing function is performed as in the bidirectional control of the conventional voice coil motor. It is controlled according to the direction, and the auto focusing function may be implemented through an operation of moving the bobbin 110 in an upward or downward direction parallel to the optical axis. For example, when a forward current is applied, the bobbin 110 may move upward, and when a reverse current is applied, the bobbin 110 may move downward.

Meanwhile, the mounting groove 146 of the housing 140 corresponding to the second stopper 112 is formed to be concave, but a second width corresponding to the first width w1 of the second stopper 112 ( It is formed to have a certain tolerance w2), it is possible to restrict the rotation of the second stopper 112 inside the seating groove 146. Then, even if the bobbin 110 receives a force in a direction rotating about an optical axis rather than an optical axis direction, the second stopper 112 may prevent the bobbin 110 from rotating.

In addition, a plurality of upper and lower support protrusions 113 and lower support protrusions 114 (refer to FIG. 7) may be protruded on upper and lower surfaces of the bobbin 110.

The upper support protrusion 113 may be provided in a cylindrical shape or in each column shape, as shown in FIG. 3, and to couple and fix the inner frame 151 and the bobbin 110 of the upper elastic member 150 I can. According to this embodiment, a first through hole 151a may be formed in a position corresponding to the upper support protrusion 113 of the inner frame 151. At this time, the upper support protrusion 113 and the first through hole 151a may be fixed by thermal fusion, or may be fixed with an adhesive member such as epoxy. In addition, a plurality of upper support protrusions 113 may be provided as shown in FIGS. 3 and 4. At this time, the distance between each of the upper support protrusions 113 may be appropriately arranged within a range that can avoid interference with surrounding components. That is, each of the upper support protrusions 113 may be arranged symmetrically with respect to the center of the bobbin 110 at regular intervals, and the intervals thereof are not constant, but with respect to a specific virtual line passing through the center of the bobbin 110 It may be formed to be symmetrical.

As shown in FIG. 7, the lower support protrusion 114 may be provided in a cylindrical shape or a prismatic shape, as shown in the upper support protrusion 113, and the inner frame 161 and the bobbin of the lower elastic member 160 (110) can be combined and fixed. According to this embodiment, a second through hole 161a may be formed at a position corresponding to the lower support protrusion 114 of the inner frame 161. At this time, the lower support protrusion 114 and the second through hole 161a may be fixed by thermal fusion, or may be fixed with an adhesive member such as epoxy. In addition, a plurality of lower support protrusions 114 as shown in FIG. 7 may be provided. In this case, the distance between each of the lower support protrusions 114 may be appropriately arranged within a range that can avoid interference with surrounding components. That is, each of the lower support protrusions 114 may be arranged symmetrically with respect to the center of the bobbin 110 at regular intervals.

Meanwhile, as shown in FIG. 7, the number of the lower support protrusions 114 may be provided less than the number of the upper support protrusions 113. This is according to the shape of the upper elastic member 150 and the lower elastic member 160. That is, as shown in Fig. 4, the upper elastic member 150 must be formed in a two-part structure separated from each other so as not to be electrically connected to each other in order to serve as a terminal for applying current to the first coil 120. Therefore, if a sufficient number of upper support protrusions 113 are not provided and fixed, it is possible to prevent the upper elastic member 150 and the bobbin 110 from being incompletely coupled. On the other hand, since the lower elastic member 160 is composed of one body as shown in FIG. 6, a stable coupling is possible with only a small number of lower support protrusions 114 compared to the upper elastic member 150. In addition, contrary to the embodiment, the lower elastic member 160 may be insulated from each other to serve as a terminal for applying current to the first coil 120 to form a two-segmented structure. In this case, the upper elastic member ( 150) can be composed of one body.

In addition, two winding protrusions 115 may be provided on an upper outer peripheral surface of the bobbin 110. Both ends of the first coil 120 may be respectively wound on the winding protrusion 115, and in this place, a pair of solder portions 157 provided on the upper elastic member 150 can be energized by soldering, etc. Can be connected. In addition, a pair of the winding protrusions 115 may be disposed at a position symmetrical to the left and right with respect to the center of the bobbin 110. In addition, the soldering connection between the solder part 157 and the first coil 120 wound on the winding protrusion 115 is performed without lifting the inner frame 151 of the upper elastic member 150 on the upper side of the bobbin 110. It also plays a role in allowing them to be combined together. In addition, a locking protrusion 115a is formed at an end of the winding protrusion 115 to prevent separation of both ends of the wound first coil 120.

The first coil 120 may be provided as a ring-shaped coil block inserted into the outer circumferential surface of the bobbin 110, but is not limited thereto, and the coil may be wound directly on the outer circumferential surface of the bobbin 110.

According to the present embodiment, the first coil 120 may be formed in an approximately octagonal shape as shown in FIG. 2. This corresponds to the shape of the outer peripheral surface of the bobbin 110, and the bobbin 110 may also be provided in an octagonal shape. In addition, at least four surfaces of the first coil 120 may be formed in a straight line, and a corner portion connecting these surfaces may be formed in a round or straight line. In this case, the portion formed in a straight line may be formed to be a surface corresponding to the magnet 130. In addition, the surface of the magnet 130 corresponding to the first coil 120 may have the same curvature as that of the first coil 120. That is, when the first coil 120 is a straight line, the surface of the corresponding magnet 130 may be a straight line, and when the first coil 120 is a curved line, the surface of the corresponding magnet 130 may be curved. In addition, even if the first coil 120 is curved, the surface of the corresponding magnet 130 may be straight or vice versa.

The first coil 120 is for moving the bobbin 110 in a direction parallel to the optical axis to perform an autofocus function, and when current is supplied, an electromagnetic force may be formed through interaction with the magnet 130, and the formed The electromagnetic force can move the bobbin 110.

Meanwhile, the first coil 120 may be configured to correspond to the magnet 130, and as shown, the magnet 130 is composed of a single body, so that the entire surface facing the first coil 120 has the same polarity. When provided to have a, the first coil 120 may also be configured such that a surface corresponding to the magnet 130 has the same polarity. On the other hand, although not shown, if the magnet 130 is divided into two planes perpendicular to the optical axis and the first coil 120 is divided into two or more surfaces, the first coil 120 is also It is also possible to be divided into a number corresponding to the divided magnet 130.

The magnet 130 may be installed at a position corresponding to the first coil 120. According to this embodiment, the magnet 130 may be installed at a position corresponding to the first coil 120 of the housing 140 as shown in FIG. 2.

The magnet 130 may be configured as one body, and in the present embodiment, a surface facing the first coil 120 may be an N pole and an outer surface may be an S pole. However, it is not limited to this, and it is possible to configure the opposite. Also, as described above, it may be divided into two planes perpendicular to the optical axis.

At least two magnets 130 may be installed, and according to the present embodiment, four may be installed. At this time, the magnet 130 is configured in a rectangular parallelepiped shape having a predetermined width, and one wide surface may be installed on each side of the housing 140. In this case, the magnets 130 facing each other may be installed parallel to each other. In addition, the magnet 130 may be disposed to face the first coil 120. In this case, surfaces of the magnet 130 and the first coil 120 facing each other may be disposed in a plane so as to be parallel to each other. However, this is not limited thereto, and depending on the design, only one of the magnet 130 and the first coil 120 may be a flat surface, and the other may be configured as a curved surface. Alternatively, both surfaces of the first coil 120 and the magnet 130 facing each other may be curved, and in this case, the curvature of the facing surface of the first coil 120 and the magnet 130 may be the same.

As shown in the drawing, when the magnet 130 is provided in a hexahedral shape, one pair of the plurality of magnets 130 is arranged in parallel in the second direction, and the other pair is arranged in parallel in the third direction. Can be. According to this arrangement structure, it is possible to control the movement of the housing 140 for camera shake correction, which will be described later.

The housing 140 may be formed in an approximately rectangular shape, and according to this embodiment, it may be formed in an approximately octagonal shape as shown in FIG. 5. In this case, the housing 140 may include a first surface 141 and a second surface 142. The first surface 141 may be a surface on which the magnet 130 is installed, and the second surface 142 may be a surface on which a support member 220 to be described later is disposed.

The first surface 141 may be formed flat. According to the present embodiment, the first surface 141 may be formed in an area corresponding to or larger than the magnet 130. In this case, the magnet 130 may be fixed to the magnet seating portion 141a formed on the inner surface of the first surface 141. The magnet seating portion 141a may be formed as a recess corresponding to the size of the magnet 130, and may be disposed so that the magnet 130 and at least four faces face each other. At this time, the bottom surface of the magnet seating part 141a, that is, the surface facing the second coil 230 to be described later, is formed with an opening 141b so that the bottom surface of the magnet 130 is directly connected to the second coil 230. It can be formed to face each other. Meanwhile, the magnet 130 may be fixed to the magnet mounting portion 141a with an adhesive, but is not limited thereto, and an adhesive member such as a double-sided tape may be used. Alternatively, instead of forming the magnet seating portion 141a into a concave groove as shown in FIG. 5, it is also possible to form a window-shaped mounting hole through which a part of the magnet can be exposed or inserted. Meanwhile, an adhesive injection hole 141c into which an adhesive member such as epoxy for fixing the magnet 130 is injected may be formed on the upper surface of the first surface 141. According to the present embodiment, the adhesive injection hole 141a is provided in a tapered cylindrical shape, and the adhesive can be injected through the exposed upper surface of the housing 140.

A plurality of third stoppers 143 may protrude from the upper surface of the housing 140. The third stopper 143 is to prevent collision between the cover member 300 and the housing 140 body, which will be described later, and when an external shock occurs, the upper surface of the housing 140 is directly attached to the inner surface of the cover member 300. It can prevent collision. In addition, the third stopper 143 may also serve to guide the installation position of the upper elastic member 150. To this end, as shown in FIG. 3, the third stopper 143 of the upper elastic member 150 A guide groove 155 having a corresponding shape may be formed at a position corresponding to the stopper 143.

Meanwhile, the first surface 141 may be disposed parallel to the side surface of the cover member 300 to be described later. In addition, the first surface 141 may be formed to have a larger surface than the second surface 142.

In addition, as shown in FIGS. 5 and 6, the escape groove 142a having a predetermined depth may be concave on the second surface 142. In this case, the bottom surface of the escape groove 142a is formed to form an open opening, so that the fixing portion of the lower portion of the support member 220 to be described later can be prevented from interfering with the housing 140. In addition, the upper side of the escape groove 142a may constitute a stepped portion 142b as shown in FIG. 6 to support the inside of the upper side of the support member 220 to be described later.

In addition, a plurality of upper frame support protrusions 144 to which the outer frame 152 of the upper elastic member 150 is coupled, as shown in FIGS. 3, 5 and 6, are formed on the upper side of the housing 140. I can. In this case, the upper frame support protrusions 144 may be formed in a larger number than the number of the upper support protrusions 113 described above. This is because the length of the outer frame 152 is longer than the length of the inner frame 151. Meanwhile, a third through hole 152a having a corresponding shape may be formed in the outer frame 152 corresponding to the upper frame support protrusion 144, and it may be fixed by adhesive or thermal fusion there.

Further, a plurality of lower frame support protrusions 145 to which the outer frame 162 of the lower elastic member 160 is coupled may be formed to protrude from the lower side of the housing 140. In this case, the lower frame support protrusions 145 may be formed in a larger number than the number of the lower support protrusions 114 described above. This is because the length of the outer frame 162 of the lower elastic member 160 is longer than the length of the inner frame 161. Meanwhile, a fourth through hole 162a having a corresponding shape may be formed in the outer frame 162 corresponding to the lower frame support protrusion 145, and may be fixed thereto by adhesive or thermal fusion.

In addition, a fourth stopper 147 may protrude from the lower side of the housing 140. The fourth stopper 147 prevents the bottom surface of the housing 140 from colliding with the base 210 and/or the circuit board 150 to be described later. In addition, the fourth stopper 147 may maintain a state spaced apart from the base 210 and/or the circuit board 150 by a predetermined distance during an initial state and normal operation. Through this configuration, the housing 140 is spaced apart from the base 210 in the lower side and the cover member 300 in the upper side so that the height in the optical axis direction can be maintained by the support member 220 to be described later without vertical interference. have. Accordingly, the housing 140 may perform a shifting operation in the second and third directions in the front-to-back, left-to-back direction in a plane parallel to the optical axis. This operation will be described again later.

Meanwhile, the upward and/or downward motion of the bobbin 110 in a direction parallel to the optical axis may be elastically supported by the upper and lower elastic members 150 and 160. The upper elastic member 150 and the lower elastic member 160 may be provided with a leaf spring.

The upper and lower elastic members 150 and 160 are the inner frames 151 and 161 coupled to the bobbin 110 and the outer frame 152 coupled to the housing 140, as shown in FIGS. 3 and 7. ) 162 and the connection portions 153 and 163 connecting the inner frames 151 and 161 and the outer frames 152 and 162. The connection portions 153 and 163 may be bent at least once to form a pattern having a predetermined shape. The bobbin 110 may be elastically supported in an upward and/or downward motion of the bobbin 110 in a first direction parallel to the optical axis through a change in position and fine deformation of the connection portions 153 and 163.

According to this embodiment, the upper elastic member 150 may be divided into two divided first upper elastic members 150a and second upper elastic members 150b, as shown in FIG. 9. Through this two-part structure, the upper elastic member 150 may receive power having different polarities from the first upper elastic member 150a and the second upper elastic member 150b. That is, as shown in FIGS. 3 and 8, after the inner frame 151 and the outer frame 152 are coupled to the bobbin 110 and the housing 140, respectively, both ends of the first coil 120 By providing a solder part 157 provided at a position corresponding to the pair of winding protrusions 115 to be wound, the solder part 157 performs conductive connection such as soldering, so that power of different polarities can be applied. have. At this time, by providing at least two cutting pieces 154 on the outer frame 152 of the upper elastic member 150, the upper elastic member 150, which is manufactured as one body and assembled, can be formed in a two-part structure. have. At this time, both ends 154a and 154b of the cutting piece 154 may be configured to be thinner than the width of the outer frame 152 to facilitate cutting. By configuring both ends (154a) (154b) in this way, the assembly worker can visually clearly check the cut position of the outer frame 152 of the upper elastic member 150, and cut more conveniently using a cutting tool, etc. can do. In addition, unlike the embodiment, the cut piece 154 is not formed, and the first upper elastic member and the second upper elastic member separated from each other are formed separately, and then coupled to the bobbin 110 and the housing 140, respectively. You may.

On the other hand, according to the present embodiment, as shown in FIG. 8, the support member 220 is integrally formed at the corner of the upper elastic member 150, and is bent in a direction parallel to the optical axis in a step before or after assembly ( bending). However, the present invention is not limited thereto, and the support member 220 may be formed as a separate member and coupled to the upper elastic member 150. In addition, when the support member 220 is formed as a separate member, it may be formed of a leaf spring, a coil spring, a suspension wire, or the like, and any member capable of supporting elasticity may be used.

Meanwhile, the upper and lower elastic members 150 and 160, the bobbin 110 and the housing 140 may be assembled through thermal bonding and/or bonding using an adhesive. At this time, the fixing operation may be completed by bonding using an adhesive after heat fusion fixing according to the assembly sequence.

For example, when first assembling the inner frame 161 of the bobbin 110 and the lower elastic member 160, and secondly assembling the housing 140 and the outer frame 162 of the lower elastic member 160, The lower support protrusion 114 of the bobbin 110 and the second through hole 161a coupled thereto, and the fourth through hole 162a coupled with the lower frame support protrusion 145 of the housing 140 may be thermally fused and fixed. . Third, when assembling the bobbin 110 and the inner frame 151 of the upper elastic member 150 first, the upper support protrusion 113 of the bobbin 110 and the first through hole 151a coupled thereto are thermally fused. Can be fixed. After that, for the fourth time, when fixing the outer frame 152 of the housing 140 and the upper elastic member 150, the third through hole 152a coupled to the upper frame support protrusion 144 of the housing 140 is It may be bonded through the application of an adhesive such as epoxy. However, the order of assembly may be changed, that is, the first to third assembly processes are thermal fusion, and bonding may be performed at the time of fixing in the last fourth stage. This can be accompanied by deformation, such as warping during thermal fusion, and can be compensated for through bonding in the final step.

In particular, as described above, the upper elastic member 150 is provided in a two-part structure, so that the number of the upper support protrusions 113 is greater than the number of the lower support protrusions 114 so that the upper elastic member 150 can be separated. It is possible to prevent the lifting phenomenon that may occur.

The second lens driving unit 200 is a lens driving unit for image stabilization, and includes a first lens driving unit 100, a base 210, a support member 220, a second coil 230, and a position detection sensor 240. It may include, and may further include a circuit board 250.

The first lens driving unit 100 may be configured as described above, and may be replaced with an optical system implementing another type of auto focusing function in addition to the above configuration. That is, instead of using a voice coil motor type auto-focusing actuator, it may be composed of an optical module using a single lens moving actuator or a refractive index variable type actuator. That is, the first lens driving unit 100 may use any optical actuator capable of performing an auto-focusing function. However, the magnet 130 needs to be installed at a position corresponding to the second coil 230.

As shown in FIGS. 11 to 14, the base 210 may be provided in a substantially rectangular shape, and the support member 220 may be fixed at four corners. A plurality of first grooves 211 for injecting an adhesive may be provided in the base 210 when the cover member 300 is adhesively fixed. At least one first groove 211 may be formed on a side of the circuit board 250 that does not face the terminal surface 250a to be described later.

A terminal surface support groove 210a having a size corresponding to the terminal surface 250a may be formed on a surface of the base 210 facing the terminal surface 250a. The terminal surface support groove 210a is formed to be concave inward from the outer peripheral surface of the base 210 to a predetermined depth, so that the terminal surface 250a does not protrude outward or the amount of protrusion can be adjusted.

In addition, a stepped portion 210b is formed on the circumferential surface of the base 210 to guide the cover member 300 coupled to the upper side of the stepped portion 210b. In addition, the end of the cover member may be in contact with the surface. Can be combined. At this time, the end portions of the stepped jaw 210b and the cover member 300 may be adhesively fixed and sealed with an adhesive or the like.

A plurality of guide protrusions 212 may protrude on the upper surface of the base 210. The guide protrusion 210 may be provided as a first guide protrusion 212a and/or a second guide protrusion 212b. The first and/or second guide protrusions 212a and 212b may be designed and arranged as required. In addition, the first guide protrusion 212a disposed inside may guide the installation position of the circuit board 250. The second guide protrusion 212b may guide the inner circumferential surface of the second coil 230. According to the present embodiment, since a total of four second coils 230 are provided, eight guide protrusions 212 including first and second guide protrusions 212a and 212b may be provided. That is, two of the first and second guide protrusions 212a and 212b are each paired to guide the circuit board 250 and the second coil 230. In addition, one first and second guide protrusions 212a and 212b may be formed according to design to guide the circuit board 250 and/or the second coil 230.

In addition, a support member seating groove 214 into which the support member 220 can be inserted may be formed concave on the upper surface of the base 210. An adhesive may be applied to the support member mounting groove 214 to fix the support member 220 so that it does not move. The end of the support member 220 may be inserted and fixed in the support member mounting groove 214.

In addition, a detection sensor mounting groove 215 in which the detection sensor 240 may be disposed may be provided on the upper surface of the base 210. According to this embodiment, a total of two detection sensor mounting grooves 215 are provided, so that the detection sensor 240 is disposed in the detection sensor mounting groove 215 so that the first lens driving unit 100 The direction and the degree of movement in the third direction can be detected. To this end, two detection sensor mounting grooves 215 may be disposed such that the angle formed by the virtual lines connecting the center of the detection sensor mounting groove 215 and the base 210 is 90 degrees.

A tapered inclined surface 215a is formed on at least one surface of the detection sensor mounting groove 215, and an epoxy injection for assembly of the detection sensor 240 may be more smoothly performed. In addition, a separate epoxy or the like may not be injected into the detection sensor mounting groove 215, but the detection sensor 240 may be fixed by injecting epoxy or the like. The position of the detection sensor mounting groove 215 may be disposed in the center or near the center of the second coil 230. Alternatively, the center of the second coil 230 and the center of the detection sensor 240 may be matched.

Meanwhile, as illustrated in FIG. 14, a seating portion on which a filter is installed may be formed on the lower surface of the base 210. The filter may be an infrared cut filter. However, this is not limited thereto, and a filter may be disposed in a separate sensor holder under the base 210. In addition, as will be described later, a sensor substrate on which an image sensor is mounted may be coupled to a lower surface of the base 210 to constitute a camera module.

As shown in FIGS. 3 and 10, the support member 220 may be bent in the assembling step while being integrally configured with the four corner portions of the upper elastic member 150 to be coupled to the base 210. The end of the support member 220 may be inserted into the support member mounting groove 214 and fixed with an adhesive member such as epoxy.

Since the support member 220 according to the present embodiment is formed at the corner portion of the upper elastic member 150, a total of four may be provided. However, it is not limited thereto, and it is possible to consist of 8 pieces of 2 pieces for each corner.

The support member 220 of the embodiment may include a connection part 221 connected to the upper elastic member 150, an elastic deformation part 222, 223, a fixing part 224, a damping connection part 225, and four At least two of the support members 220 may include a terminal portion 226.

The connection part 221 is a place connected to the corner surface of the upper elastic member 150, and a through hole 221a is formed in the center, so that the bending operation can be performed at the left and right sides of the through hole 221a, with a small force. It can also be formed by bending the support member 220. In addition, the shape of the connection part 221 is not limited thereto, and any shape that allows bending even if a through hole is not formed may be used. In addition, when the support member 220 is formed as a separate member from the upper elastic member 150, the connection portion 221 may be a portion to which the support member 220 and the upper elastic member 150 are electrically connected.

The elastic deformation portions 222 and 223 may be provided in a shape that is bent at least once or more, and may form a pattern of a predetermined shape. According to this embodiment, the elastic deformation portion may be formed with the first and second elastic deformation portions 222 and 223 and the damping connection portion 225 interposed therebetween, and may also be provided in a shape corresponding to each other. have. For example, as shown in FIG. 10, when the first elastic deformation part 222 is formed in an N-shape in which a straight part is formed in a direction parallel to the optical axis through four bends, the second elastic deformation part 223 also corresponds to this. Can be formed. The above-described N-shape is only an example, and in addition, it may be configured to have various patterns such as a zigzag shape. In this case, the first and second elastic deformation portions 222 and 223 may be configured as one without distinction, or may be configured in the form of a suspension wire without such a pattern.

When the housing 140 moves in the second and third directions, which are planes perpendicular to the optical axis, the elastic deformation portions 222 and 223 may be slightly elastically deformed in the moving direction. Then, the housing 140 can move only in the second and third directions, which are planes perpendicular to the optical axis, with almost no position change with respect to the first direction, which is a direction parallel to the optical axis, thereby increasing the accuracy of camera shake correction. This is to utilize the property that the elastic deformation portions 222 and 223 can be stretched in the longitudinal direction.

The fixing part 224 may be provided at the end of the support member 220, and may be provided in a plate shape wider than the width of the elastic deformation parts 222 and 223, but is not limited thereto and has a narrow or corresponding width. May be. The fixing part 224 may be inserted into the support member mounting groove 214 of the base 210, and may be fixedly coupled by an adhesive member such as epoxy. However, this is not limited thereto, and the support member seating groove 214 may be fitted to correspond to the fixing part 224 so as to be fitted.

The damping connection part 225 may be disposed in the middle of the elastic deformation parts 222 and 223 as described above, and an end may be disposed in a space formed through the partition wall 227 formed in the housing 140. In addition, the damping connection part 225 may be disposed at any position of the support member 220 between the connection part 221 and the fixing part 224.

As shown in the figure, the space may be formed into three surfaces as a bottom surface, a partition wall 227 and a side wall of the housing 140, and the damping connection part 225 disposed in the space includes silicon (S) for damping. Can be applied. At this time, in the step of applying the silicon (S), the silicon (S) may be applied after the housing 140 is tilted so that the three surfaces are positioned on the lower side so that the silicon (S) does not flow down. In addition, the silicone (S) maintains a gel (GEL) state, so that the damping connection portion 225 is not completely fixed. Therefore, the damping connection part 225 may move little by little according to the movement of the elastic deformation parts 222 and 223, and absorb the micro-vibration transmitted through the elastic deformation parts 222 and 223.

According to the present embodiment, the damping connection part 225 may be configured in a hook shape, and an end may be configured to exceed the partition wall 227. However, it is not limited thereto, and may be formed in a straight line and disposed on the side of the space.

On the other hand, as described above, the upper elastic member 150 may be divided into first and second upper elastic members 150a and 150b receiving power having different polarities in a two-part structure. Accordingly, a terminal portion 226 for supplying power to the first and second upper elastic members 150a and 150b may be provided. Since the terminal portion 226 only needs to be applied with a positive (+) or negative (-) electrode power, it may be formed in only two of the four support members 220.

As shown in FIG. 10, the terminal portion 226 may be formed by bending a plate-shaped member extending from the fixing portion 224 at least once. The terminal portion 226 may be electrically connected to the pad 256 provided on the circuit board 250 by a method such as soldering. To this end, the terminal portion 226 and the pad 256 may be disposed so that the surface and the surface thereof face each other. In this case, the terminal portion 226 and the pad 256 may be in surface contact, or a conductive member such as solder may be interposed therebetween by being spaced apart by a predetermined distance as illustrated. Through the coupling of the terminal part 226 and the pad 256, the support member 220 supplies power having a different polarity toward the upper elastic member 150 and improves the fixing force of the base 210 side of the support member 220. I can.

The second coil 230 may be disposed to face the magnet 130 fixed to the housing 140. For example, the second coil 230 may be disposed outside the magnet 130. Alternatively, the second coil 230 may be installed under the magnet 130 at a predetermined distance apart.

According to this embodiment, a total of four second coils 230 may be installed on each of four surfaces, but this is not limited, and only two such as one for the second direction and one for the third direction are installed. It is also possible, and four or more may be installed.

In addition, the second coil 230 may be configured by winding a wire in a donut shape, and as shown in FIG. 13, a terminal 252 formed on the circuit board 250 in which the line of sight 231 and the vertical line 232 are respectively formed. It can be connected to be energized.

The second coil 230 may be installed on the upper surface of the circuit board 250 disposed above the base 210. However, the present invention is not limited thereto, and the second coil 230 may be disposed in close contact with the base 210 or may be disposed a predetermined distance apart, and is formed on a separate substrate to stack the second coil on the circuit board 250. You can also connect. According to this embodiment, the second coil 230 may be guided by the first and second guide protrusions 215a and 215b protruding from the upper surface of the base 210 as described above. .

The detection sensor 240 is disposed at the center of the second coil 230 to detect the movement of the housing 140. The detection sensor 240 may be provided as a Hall sensor, and any sensor capable of detecting a change in magnetic force may be used. The detection sensor 240 may be mounted on the lower surface of the circuit board 250 as shown in the cross-sectional view of FIGS. 12 and 17, and the mounted detection sensor 240 is a detection sensor mounting groove formed in the base 210 It can be inserted into 215. A lower surface of the circuit board 240 may be a surface opposite to a surface on which the second coil 230 is disposed.

The circuit board 250 is coupled to the upper surface of the base 210, and the installation position may be guided by the first guide protrusion 212a as described above. At least one bent terminal surface 250a may be formed on the circuit board 250. In the embodiment, the circuit board may form two bent terminal surfaces 250a. A plurality of terminals 251 are disposed on the terminal surface 250a to supply current to the first and second coils 120 and 230 by receiving external power. The number of terminals formed on the terminal surface 250a may be increased or decreased according to the type of components requiring control. Meanwhile, according to the present embodiment, the circuit board may be provided with an FPCB. However, this is not limited thereto, and it is also possible to directly form the terminal configuration of the circuit board 250 on the surface of the base 210 by using a surface electrode method or the like.

In addition, an escape groove 254 through which any one of the line of sight 231 or the vertical line 232 of the second coil 230 passes may be provided on the circuit board 250. The escape groove 254 may form a space through which a line drawn from an inner side of the second coil 230 among the line of sight 231 and the vertical line 232 of the second coil 230 passes. The inner surface of the second coil 230 may be a surface where the second coil 230 and the circuit board 250 contact each other. That is, as shown in FIG. 13, any one of the line of sight 231 and the vertical line 232 of the second coil 230 may be drawn out from the bottom side of the second coil 230. However, if the line of sight 231 is drawn out from the outer circumferential surface of the second coil 230, the vertical line 232 may be drawn out from the inner circumferential surface of the second coil 230. At this time, since the vertical line 232 is also drawn out from the bottom surface of the second coil 230, when it is drawn outward from the inner peripheral surface of the second coil 230, it must pass through the bottom surface of the second coil 230. When the vertical wire 232 is drawn out to the bottom surface of the second coil 230 as described above, the second coil 230 may not be horizontally installed due to the thickness of the vertical wire. Therefore, the evacuation groove 254 is formed in a certain shape on the circuit board 250 so that the entire bottom surface of the second coil 230 can always be in surface contact with the entire surface of the mounting position, and the height of the evacuation groove 254 A space of as much is formed on the bottom surface side near the end of the second coil 230. Then, the vertical line 232 may pass through the space and be drawn out of the second coil 230.

On the circuit board 250, a pad 256 connected to the terminal portion 226 provided on the support member 220 so as to be energized may be installed near an edge. The pad 256 is formed on the upper surface of the angled portion of the edge of the circuit board 250, is made of a conductive material, and may be connected to an electric circuit inside the circuit board 250, not shown, and the first coil 120 Each of the two leader lines of) can be connected. Meanwhile, the pads 256 may be formed at two of the four corners of the circuit board 250, and the pads 256 are not formed at the other two. The edge portion on which the pad 256 is not formed may maintain an angular shape, but may be formed by being chamfered as shown in FIG. 12 and the like.

Meanwhile, the detection sensor 240 may be disposed at the center side of the second coil 230 with the circuit board 250 interposed therebetween. That is, the detection sensor 240 is not directly connected to the second coil 230, and the second coil 230 on the upper surface and the detection sensor 240 on the lower surface based on the circuit board 250 Can be installed. According to this embodiment, the detection sensor 240, the second coil 230, and the magnet 130 are preferably disposed on the same axis.

According to this configuration, the second coil 230 may move the housing 140 in the second and third directions through interaction with the magnet 130 to perform hand shake correction.

The cover member 300 may be provided in an approximately box shape, and may wrap the first and second lens driving units 100 and 200 described above. At this time, as shown in FIG. 1 and the like, a second groove 310 is formed at a position corresponding to the first groove 211 of the cover member 300, so that the first and second grooves 211 and 310 are combined. Through it, a concave portion having a certain area may be formed. An adhesive member having a viscosity may be applied to the concave portion. That is, the adhesive member applied to the concave groove fills a gap between the surfaces of the cover member 300 and the base 210 facing each other through the concave groove, so that the cover member 300 becomes the base 210 It may be configured to be sealed while being combined with.

In addition, a third groove 320 is provided on a surface of the cover member 300 corresponding to the terminal surface 250a of the circuit board 250 so as not to interfere with the plurality of terminals 251 formed on the terminal surface 250a. Can be formed. The third groove part 320 is formed concave on the entire surface facing the terminal surface 250a, and the adhesive member is applied to the inside of the third groove part 320 to provide the cover member 300 and the base 210 and The circuit board 250 may be sealed.

Meanwhile, the first to third grooves 211, 310, and 320 are respectively formed in the base 210 and the cover member 300, but are not limited thereto, and have a similar shape to the base 210 only. It may be formed or configured to be formed only on the cover member 300.

Meanwhile, as shown in FIG. 14, a concave portion is formed under the base 210, an image sensor and a printed circuit board are coupled thereto, and a lens barrel is assembled to the bobbin 110 to configure a camera module. May be. Alternatively, a separate image sensor holder may be further included under the base 210. Alternatively, by extending the base downward, the camera module substrate on which the image sensor is mounted may be directly coupled to the bottom side. In addition, the camera module can be applied to mobile devices such as a mobile phone.

According to the above configuration, since the magnet 130 can be shared to implement the auto-focusing operation and the camera shake correction operation of the first and second lens driving units 100 and 200, the number of parts can be reduced, and the housing Responsiveness can be improved by reducing the weight of 140. Of course, a magnet for auto-focusing and a magnet for image stabilization may be configured separately.

In addition, the support member 220 and the upper elastic member 150 can be configured by bending them into one body, so that the number of parts can be reduced and assembling property can be improved.

In addition, since the external micro-vibration transmitted to the support member 220 is absorbed by using silicon (S), more precise hand shake correction control is possible.

Although the embodiments according to the present embodiment have been described above, these are merely exemplary, and those of ordinary skill in the art will understand that various modifications and equivalent ranges of embodiments are possible therefrom. Therefore, the true technical protection scope of this embodiment should be determined by the following claims.

100; A first lens driving device 110; Bobbin
120; First coil 130; Magnet
140; Housing 150; Upper elastic member
160; Lower elastic member 200; Second lens driving device
210; Base 220; Support member
230; Second coil 240; Detection sensor
250; Circuit board 300; Cover member

Claims (28)

Base;
A housing disposed on the base;
A bobbin disposed in the housing;
A first coil disposed on the bobbin;
A magnet disposed in the housing and facing the first coil;
A circuit board including a second coil facing the magnet and disposed on the base;
An upper elastic member connecting the bobbin and the housing;
A support member connecting the upper elastic member and the circuit board; And
And a damping member connecting the support member and the housing,
The housing is a lens driving device including an adhesive injection hole in which an adhesive member for coupling the magnet to the housing is disposed. The method of claim 1,
The adhesive injection hole is a lens driving device including a tapered region. The method of claim 1,
The adhesive injection hole is a lens driving device formed at a position corresponding to the one surface of the magnet. The method of claim 1,
The magnet includes four magnets,
The support member includes four support members,
The housing includes eight outer surfaces forming an octagonal shape,
The eight outer surfaces include four outer surfaces corresponding to each of the four magnets and four outer surfaces corresponding to the four support members,
Each of the four outer surfaces corresponding to the four support members includes an escape groove. The method of claim 4,
Four outer surfaces corresponding to each of the four magnets correspond to the sides of the housing,
The lens driving device has four outer surfaces corresponding to the four support members corresponding to the corners of the housing. The method of claim 1,
The damping member is a lens driving device in a gel (GEL) state. The method of claim 1,
The damping member is a lens driving device comprising damping silicon. The method of claim 1,
A lens driving device in which the support member and the circuit board are connected by soldering. The method of claim 1,
The circuit board includes a pad,
The support member includes a fixing part fixed to the base and a terminal part extending from the fixing part,
A lens driving device in which the pad of the circuit board and the terminal portion of the support member are connected by solder. The method of claim 1,
The housing is formed on an outer edge of the housing and includes a bottom surface on which at least a part of the damping member is disposed. The method of claim 10,
The housing includes a side surface and a partition wall protruding from the side surface,
The bottom surface of the housing protrudes from the side surface of the housing,
The damping member is a lens driving device disposed in a space formed by the side surface, the bottom surface, and the partition wall of the housing. The method of claim 1,
The support member includes a connection part connected to the upper elastic member, a fixing part fixed to the base, an elastic deformation part connecting the connection part and the fixing part and having a curved shape, and a damping extending from the elastic deformation part Including a connection,
The damping connection part is a lens driving device connected to the damping member. The method of claim 12,
The damping member does not completely fix the damping connection part to absorb the micro-vibration transmitted through the elastic deformation part, so that the damping connection part moves according to the movement of the elastic deformation part. The method of claim 1,
The support member is a lens driving device formed integrally with the upper elastic member. The method of claim 1,
The upper elastic member is a lens driving device electrically connected to the first coil. The method of claim 1,
The support member is a lens driving device for electrically connecting the circuit board and the upper elastic member. The method of claim 1,
The adhesive member is a lens driving device that is injected through the adhesive injection hole of the housing. The method of claim 1,
The magnet includes four magnets,
The adhesive injection hole includes 8 adhesive injection holes,
A lens driving device in which two of the eight adhesive injection holes are disposed in each of the four magnets. Printed circuit board;
An image sensor disposed on the printed circuit board;
The lens driving device of claim 1 disposed on the printed circuit board; And
Camera module including a lens coupled to the bobbin of the lens driving device. A smartphone comprising the camera module of claim 19. Base;
A housing disposed on the base;
A bobbin disposed in the housing;
A first coil disposed on the bobbin;
A magnet disposed in the housing and facing the first coil;
A circuit board including a second coil facing the magnet and disposed on the base;
An upper elastic member connecting the bobbin and the housing;
A support member connecting the upper elastic member and the circuit board;
A damping member connecting the support member and the housing; And
Including an adhesive member for fixing the magnet to the housing,
The housing includes an adhesive injection hole formed to penetrate a part of the housing,
The magnet includes a first area visible from the outside through the adhesive injection hole,
At least a part of the adhesive member is disposed in the first region of the magnet. delete delete delete delete delete delete delete

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