KR102268105B1 - 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, a first coil is installed on an outer circumferential surface, and a housing for supporting a magnet disposed around the bobbin, 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 to be spaced apart from the bobbin and the first lens driving unit by a predetermined distance, and movably supporting the first lens driving unit in second and third directions with respect to the base, and supplying power to the first coil. a supporting member capable of being capable of, a second coil disposed to face the magnet of the first lens driving unit, and a detection sensor for detecting positions in the second and third directions of the second lens driving unit 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 that are orthogonal to an optical axis and are different from each other by the interaction between the magnet and the second coil; may include.

Description

A lens driving device and a camera module having the same {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.

Since it is difficult to apply a technology such as VCM used in an existing general camera module to a camera module for ultra-small size and low power consumption, research related thereto 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 frequently be impacted during use, and the camera module may be slightly shaken according to a user's hand shake while shooting. In consideration of this point, development of a technology for additionally installing an anti-shake means to a camera module is recently required.

Such means for preventing hand shake are being studied in various ways. In the case of a technology that can correct hand shake by moving the dual optical module in the x and y axes corresponding to the plane perpendicular to the optical axis, the optical system is moved perpendicular to the optical axis Since it moves and adjusts in a plane, the structure is complicated and not suitable for miniaturization.

The present embodiment provides a lens driving unit including a hand-shake correction 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, a first coil is installed on an outer circumferential surface, and a housing for supporting a magnet disposed around the bobbin, 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 to be spaced apart from the bobbin and the first lens driving unit by a predetermined distance, and movably supporting the first lens driving unit in second and third directions with respect to the base, and supplying power to the first coil. a supporting member capable of being capable of, a second coil disposed to face the magnet of the first lens driving unit, and a detection sensor for detecting positions in the second and third directions of the second lens driving unit 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 that are orthogonal to an optical axis and are different from each other by the interaction between the magnet and the second coil; Including, the bobbin may include at least one groove on the upper surface having a width and a depth greater than the diameter of the first coil.

The first lens driving unit may include: a bobbin having at least four straight surfaces and an edge surface connecting them; a pair of winding protrusions protruding from an outer circumferential surface of the bobbin in a direction perpendicular to the optical axis of the lens; a first coil wound on the outer circumferential surface of the bobbin, the first coil having a line of sight and a vertical wire wound on the pair of winding protrusions, respectively; a magnet disposed at a position corresponding to the curved surface of the first coil; a housing to which the magnet is fixed; and an inner frame coupled to the bobbin, and upper and lower elastic members coupled to the outer frame and the housing, wherein the upper elastic member may close the opening of the recess at the coupling position.

The groove may include first and second grooves disposed on the left and right sides of the winding projection.

The winding protrusion has a locking protrusion formed at an end thereof, so that both ends of the wound first coil are prevented from being separated.

The lens driving device according to the present embodiment may further include a cover member coupled to the base to surround the first and second lens driving units.

The bobbin may include a first stopper of a first height protruding from the upper surface; and a second stopper protruding from the side surface of the upper surface in the circumferential direction, 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 include a seating groove having a size corresponding to the second stopper at a position corresponding to the second stopper.

The housing may include: a first surface provided at a corner on which the four magnets are installed; a second surface in which the first surfaces are interconnected and formed as a flat surface of a predetermined length on which the support member is disposed; a third stopper protruding from the 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 for preventing interference between the support member and the housing.

In this case, it may further include a step portion formed on the upper side of the escape groove.

The second surface may further include a support member coupling portion to which the support member is coupled.

The support member is composed of a total of four and may be installed to be symmetrical to each other.

The support member may include a first fixing part fixedly coupled to the housing; first and second elastic deformation portions extending from the first fixing portion; and a second fixing part fixedly coupled to the base.

At least four support members may be provided to support the second lens driving unit.

The first and second elastically deformable portions may be provided to be bent at least once to form a predetermined pattern.

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 perpendicular to the optical axis through bending at least four times, or may have a wire form without a pattern.

The second fixing part may be formed to be wider than a width of the first and second elastically deformable parts.

In the base, a support member seating groove may be concavely formed at a position corresponding to the second fixing part of the support member.

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

The second coil may be provided as a substrate having a pattern coil on an upper surface of the circuit board installed on the upper side of the base, and may be laminated 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 magnet may be used as both an autofocus magnet for moving the bobbin in the first direction and a hand-shake correction magnet for 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 driving device configured as described above.

When connecting the coil and the elastic member to be energized through soldering, etc., the line of sight and the end of the vertical wire are raised on the upper surface of the elastic member so that this part can be soldered, so assembly such as disconnection or poor energization during the soldering process mistakes can be avoided.

In addition, it is also possible to change the soldering position as needed by disposing the groove next to the winding projection so that the coil can pass through the nearest one of the two grooves according to the number of times it is wound around the winding projection.

1 is a schematic perspective view of a lens driving unit according to the present embodiment;
Figure 2 is an exploded perspective view of Figure 1;
3 is a view with the cover member removed in FIG. 1;
4 is a perspective view of the bobbin;
5 and 6 are enlarged views showing the main part of the bobbin by enlarging the winding protrusion;
7 and 8 are a perspective view and a rear perspective view of the housing;
9 is a rear perspective view of a housing in which a bobbin and a lower elastic member are coupled;
10 is a front view of the support member;
11 and 12 are views showing a base, a circuit board and a second coil according to the present embodiment;
13 is a II' cross-sectional view of the lens driving unit according to the present embodiment, and,
14 is a cross-sectional view II-II' 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 the cover member removed in FIG. 1, FIG. 4 is a perspective view of a bobbin, and FIGS. 5 and 6 are An enlarged view of the main part showing an enlarged winding protrusion of the bobbin, FIGS. 7 and 8 are a perspective view and a rear perspective view of the housing, FIG. 9 is a rear perspective view of the housing in which the bobbin and the lower elastic member are combined, and FIG. 10 is a front view of the support member 11 and 12 are views showing a base, a circuit board, and a second coil according to this embodiment, FIG. 13 is a II' cross-sectional view of the lens driving unit according to this embodiment, and FIG. 14 is this embodiment II-II' is a cross-sectional view of the lens driving unit according to FIG.

Meanwhile, in FIGS. 1 to 14 , a Cartesian coordinate system (x, y, z) may be used. In the drawings, the x-axis and y-axis mean a plane perpendicular to the optical axis. For convenience, the optical axis direction (z-axis direction) may be referred to as the first direction, the x-axis direction as the second direction, and the y-axis direction as the third direction. .

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

1 and 2 , the lens driving unit according to the present 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 auto focus, and the second lens driving unit 200 is a lens driving unit for correcting hand shake.

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 reciprocally installed in the inner space of the housing 140 in a direction parallel to the optical axis. A first coil 120 to be described later is installed on the outer peripheral surface of the bobbin 110 so that the first coil 120 may be installed on the outer peripheral 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 may be coupled to the inside of the bobbin 110 in various ways. For example, a female thread may be formed on the inner peripheral surface of the bobbin 110 , and a male thread corresponding to the thread may be formed on the outer peripheral surface of the lens barrel, and the lens barrel may be coupled to the bobbin 110 by screwing these threads. However, the present invention is not limited thereto, and the lens barrel may be directly fixed to the inside of the bobbin 110 by methods other than screw coupling without forming a screw 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 one 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 the first direction parallel to the optical axis for the auto-focusing function, the first stopper 111 moves beyond a range prescribed by an external impact, etc., on the body of the bobbin 110 . It is possible to prevent the side 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 upward to a first height h1, and at least four may be formed to protrude in the shape of a polygonal pole. 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 components is excluded as shown.

The second stopper 112 is the bottom of the body of the bobbin 110, even if the bobbin 110 moves in the first direction parallel to the optical axis for the auto-focusing function, even if it moves beyond a range specified by an external impact, etc. 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 14 . According to the present 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) may be formed.

When the contact state between the second stopper 112 and the bottom surface 146a (refer to FIG. 7) of the seating groove 146 is configured as the initial position, the auto-focusing function is similar to the unidirectional control in the conventional voice coil motor. The auto-focusing function may be implemented through an operation in which the bobbin 110 rises when current is supplied to the first coil 120 and the bobbin 120 falls when the current is turned off.

If the position at which 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 the same as the bidirectional control in the conventional voice coil motor. It is controlled according to the direction, and the auto-focusing function may be implemented by 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 seating groove 146 of the housing 140 corresponding to the second stopper 112 is concavely formed, and as shown in FIG. 7 , the first width w1 of the second stopper 112 is Rather, it is formed to have a corresponding second width w2 with a certain tolerance, so that rotation of the second stopper 112 inside the seating groove 146 can be restricted. Then, even if the bobbin 110 receives a force in a rotational direction about the optical axis rather than the optical axis direction, the second stopper 112 may prevent the bobbin 110 from rotating.

In addition, a plurality of upper support protrusions 113 and lower support protrusions 114 (see FIG. 9 ) may protrude from the upper and lower surfaces of the bobbin 110 .

As shown in FIG. 3 , the upper support protrusion 113 may be provided in a cylindrical shape or a prismatic shape, and may be used to couple and fix the inner frame 151 and the bobbin 110 of the upper elastic member 150 . can According to the present embodiment, a first through hole 151a may be formed in a position corresponding to the upper support protrusion 113 of the inner frame 151 . In this case, 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 as shown in FIGS. 3 and 4 may be provided. In this case, 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 at regular intervals symmetrically with respect to the center of the bobbin 110 , and their intervals 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. 9 , the lower support protrusion 114 may be provided in a cylindrical or prismatic shape like the upper support protrusion 113 , and the inner frame 161 and the bobbin of the lower elastic member 160 . (110) can be coupled and fixed. According to the present embodiment, a second through hole 161a may be formed in a position corresponding to the lower support protrusion 114 of the inner frame 161 . In this case, 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. 9 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 at regular intervals symmetrically with respect to the center of the bobbin 110 .

Meanwhile, the number of the lower support protrusions 114 may be smaller 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. 3 , the upper elastic member 150 should be formed in a two-part structure spaced apart from each other so as not to be electrically connected to each other in order to serve as a terminal for applying a 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 incomplete coupling between the upper elastic member 150 and the bobbin 110 . On the other hand, since the lower elastic member 160 is composed of a single body, a stable coupling is possible with only a small number of the lower support protrusions 114 compared to the upper elastic member 150 . Also, contrary to the embodiment, the lower elastic member 160 may form a two-part structure insulated from each other to serve as a terminal for applying a current to the first coil 120, and in this case, the upper elastic member ( 150) may consist of one body.

In addition, as shown in FIGS. 4 to 6 , two winding protrusions 115 may be provided on the upper outer circumferential surface of the bobbin 110 . A line of sight and a vertical line, which are both ends of the first coil 120 , may be wound on the winding protrusion 115 , respectively. The end of the first coil 120 to the upper surface of the upper elastic member 150 on the upper surface of the bobbin 110 adjacent to the winding protrusion 115 is energized by a conductive connecting member such as solder (S) Can be connected have. In addition, a pair of the winding protrusions 115 may be disposed at positions symmetrical left and right with respect to the center of the bobbin 110 , or the two winding protrusions 115 may face each other and be disposed adjacently. In addition, a locking protrusion 115a is formed at the end of the winding protrusion 115 to prevent the first coil 120 from being separated by winding the first coil 120 , or the first coil 120 . can guide the location of The locking jaw 115a is formed to gradually increase the width of the winding protrusion 115 protruding from the outer circumferential surface of the bobbin 110 as shown, and may be formed in a stepped structure stepped at the end thereof.

In addition, as shown in FIGS. 5 and 6 , at least one recess 116 may be formed next to the winding protrusion 115 . The groove 116 may include a first groove 116a and/or a second groove 116b. The first groove 116a and/or the second groove 116b has a depth and width greater than the diameter of the first coil 120 so that the line of sight or the vertical line of the first coil 120 can pass through. may be formed. Then, the line of sight or the vertical line of the first coil 120 passing through the first and/or second grooves 116a and 116b can be easily seated in the first and/or second grooves 116a and 116b. Also, the first coil 120 may pass through the recess 116 without interference with the upper elastic member disposed on the recess 116 .

On the other hand, the drawings disclose an example in which the first and/or second grooves 116a and 116b are formed, but the present invention is not limited thereto, and only one of the first grooves 116a and the second grooves 116b is provided. It is also possible, and two or more may be provided.

One end 121 of the first coil 120 is wound one or more times on the winding projection 115, and after passing through the first groove 116a or the second groove 116b, the upper portion of the groove 116 is formed. One end 121 of the first coil 120 may be electrically connected to a portion of the upper surface of the disposed upper elastic member. The other end of the first coil 120 may also pass through one or two or more of the grooves, like the one end 121 , to be electrically connected to the upper surface of the elastic member. Here, the electrical connection between the coil and the elastic member may be any method that can be electrically connected, such as soldering, soldering, Ag epoxy, conductive epoxy, or welding.

Alternatively, the end 121 of the first coil 120 is first passed through the first groove 116a, then it is passed through the second groove 116b again, and it is manufactured through a process of tying it repeatedly one or more times. 1 The line of sight and the vertical line of the coil 120 may be arranged.

Meanwhile, the upper surface of the concave groove 116 may form an opening, and the opening may be partially or entirely covered by the upper elastic member 150 . That is, since the upper opening of the recess 116 is partially or entirely closed by the upper elastic member 150 coupled to the upper surface of the bobbin 110 , the first coil 120 passing through the recess 116 . ) can be prevented from being separated toward the opening side of the groove 116 .

According to this configuration, there is no need to perform a cumbersome operation such as arranging the ends of the first coil 120 after winding the line of sight or the vertical wire around the winding protrusion 115 for line arrangement. That is, after passing the first coil 120 into the groove 116, the end 121 is bent, the end is raised on the upper surface of the upper elastic member 150, and can be energized by a method such as soldering. In addition, fixing of the first coil 120 may also be performed. Accordingly, assembling property is improved, and the amount of lead used for soldering can be reduced.

Since the first coil 120 is configured very thinly, it is often broken during the winding process. In particular, if it is disconnected during the pulling process to arrange the end 121 of the first coil 120 during the soldering process, it is discarded as defective. often becomes However, according to the present embodiment, since such an end 121 cleaning process can be omitted, it is possible to fundamentally prevent the occurrence of product defects due to such disconnection.

On the other hand, after the first coil 120 is wound on the outer peripheral surface of the bobbin 110 by a worker or a machine, the line of sight and the vertical wire are wound around the winding protrusion 115 and fixed. In this case, the position of the end of the first coil 120 wound around the winding protrusion 115 may be changed according to the operator. Therefore, according to the embodiment, when the first and second grooves 116a and 116b are formed on both sides of the winding protrusion 115, the ends of the first coil 120 after winding on the winding protrusion 115 are the first. The workability can be improved because it can pass through the nearest one of the first groove (116a) or the second groove (116b). However, only one groove 116 may be formed.

On the other hand, the first coil 120 may be provided as a ring-shaped or square-shaped coil block inserted and coupled to the outer peripheral surface of the bobbin 110, but is not limited thereto, and the coil may be directly wound on the outer peripheral surface of the bobbin. In any case, the line of sight and the vertical wire of the first coil 120 may be wound and fixed around the winding projection 115 , and other configurations are the same.

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 provided in a straight line, and an edge portion connecting these surfaces may also be provided in a straight line, but the present invention is not limited thereto and may be formed in a round shape. In this case, the portion formed in a straight line may be formed to be a surface corresponding to the magnet 130 . Also, the surface of the magnet 130 corresponding to the first coil 120 may have the same curvature as the curvature of the first coil 120 . That is, if the first coil 120 is a straight line, the corresponding magnet 130 may have a straight line. If the first coil 120 is curved, the corresponding magnet 130 may have a curved surface. Also, even if the first coil 120 is curved, the corresponding magnet 130 may have a straight line or vice versa.

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

Meanwhile, the first coil 120 may be configured to correspond to the magnet 130 . As shown, the magnet 130 is configured as 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 so that the surface facing the first coil 120 is divided into two or more, 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 the present embodiment, the magnet 130 may be installed at a corner portion of the housing 140 as shown in FIG. 2 . The shape of the magnet 130 may be a substantially trapezoidal shape corresponding to the corner portion, and the surface facing the first coil 120 is formed to correspond to the curvature of the corresponding surface of the first coil 120 . can be

The magnet 130 may be configured as a single 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, the present invention is not limited thereto, and the reverse configuration is also possible.

At least two or more magnets 130 may be installed, and according to the present embodiment, four may be installed. At this time, as described above, the magnet 130 may be provided in a substantially trapezoidal shape or may be provided in a triangular shape. However, the surface facing the first coil 120 may be formed as a straight line, but the present invention is not limited thereto. When the corresponding surface of the first coil 120 is curved, it may be provided as a curved line having a corresponding curvature. have. With this configuration, it is possible to maintain a constant distance from the first coil 120 . In the present embodiment, one may be installed in each of the four corners of the housing 140 . However, the present invention is not limited thereto, and either one of the magnet 130 and the first coil 120 may be flat, and the other may be configured as a curved surface, depending on the design. Alternatively, all of the facing surfaces of the first coil 120 and the magnet 130 may be curved surfaces, and in this case, the curvature of the facing surfaces 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 trapezoidal shape in a plane, one pair of the plurality of magnets 130 is disposed in parallel in the second direction, and the other pair is parallel to the third direction. can be arranged. According to this arrangement structure, it is possible to control the movement of the housing 140 for handshake correction, which will be described later.

The housing 140 may be formed in a substantially rectangular shape, and according to the present embodiment, may be formed in an approximately octagonal shape as shown in FIGS. 7 and 8 . 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 in a corner portion, and according to the present embodiment, an area corresponding to the magnet 130 or larger than that may be formed. 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 in a groove corresponding to the size of the magnet 130 , and may be disposed to face the magnet 130 and at least three surfaces, that is, both side surfaces and an upper surface. At this time, an opening is formed in the bottom surface of the magnet seating part 141a, that is, the surface facing the second coil 230, which will be described later, so that the bottom surface of the magnet 130 directly faces the second coil 230. can be On the other hand, the magnet 130 may be fixed to the magnet seating 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 as a concave groove as shown in FIG. 8 , it is also possible to form a mounting hole in which a portion of the magnet 130 can be exposed or fitted.

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 on the inner surface of the cover member 300 . collision can be avoided. In addition, the third stopper 143 may also serve to guide the installation position of the upper elastic member 150. For this purpose, as shown in FIG. 3 , the third stopper of the upper elastic member 150 is 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. Also, the first surface 141 may be formed to have a larger surface than the second surface 142 .

In addition, as shown in FIGS. 7 and 8 , an escape groove 142a having a predetermined depth may be concavely formed on the second surface 142 . In this case, the bottom surface of the escape groove 142a forms an open opening to prevent the second fixing part of the lower part of the support member 220 from interfering with the housing 140 , which will be described later. In addition, the upper side of the escape groove 142a may support the inner side of the upper side of the support member 220 to be described later by configuring a step portion 142b as shown in FIG. 8 .

In addition, a plurality of upper frame support protrusions 144 to which the outer frame 152 of the upper elastic member 150 is coupled may protrude from the upper side of the housing 140 . In this case, the upper frame support protrusion 144 may be formed in a number greater than the number of the upper support protrusion 113 . 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 may be fixed therein by adhesive or thermal fusion.

In addition, a plurality of lower frame support protrusions 145 to which the outer frame 162 of the lower elastic member 160 is coupled may protrude from the lower side of the housing 140 as shown in FIGS. 8 and 9 . . In this case, the lower frame support protrusion 145 may be formed in a number greater than the number of the lower support protrusion 114 . 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 therein 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 the initial state and during normal operation. Through this configuration, the housing 140 is spaced apart from the base 210 at the bottom and the cover member 300 at the top, so that the height in the optical axis direction can be maintained by the support member 220 to be described later without up-and-down interference. have. Accordingly, the housing 140 may perform a shifting operation in the second and third directions, which are front, rear, left, and rear directions on a plane parallel to the optical axis. These operations 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 as a leaf spring.

The upper and lower elastic members 150 and 160 are, as shown in FIGS. 3 and 9 , an inner frame 151 , 161 coupled to the bobbin 110 and an outer frame 152 coupled to the housing 140 . ) 162 and first fixing parts 153 and 163 connecting the inner frames 151 and 161 and the outer frames 152 and 162 may be included. The first fixing parts 153 and 163 may be bent at least once to form a pattern having a predetermined shape. The bobbin 110 may be elastically supported by upward and/or downward motion in the first direction parallel to the optical axis through position change and micro-deformation of the first fixing parts 153 and 163 .

According to the present embodiment, the upper elastic member 150 may be divided into two divided first upper elastic members 150a and second upper elastic members 150b. Through this two-part structure, the upper elastic member 150 may receive power having different polarities to the first upper elastic member 150a and the second upper elastic member 150b. That is, after the inner frame 151 and the outer frame 152 are coupled to the bobbin 110 and the housing 140, respectively, a pair of winding protrusions 115 on which both ends of the first coil 120 are wound. It is possible to receive power of different polarities by performing a conductive connection such as soldering on the upper surface in a position close to the . In this way, the upper elastic member 150 may be formed in a two-divided structure to receive power of different polarities.

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

For example, when assembling the inner frame 161 of the bobbin 110 and the lower elastic member 160 first, 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 to the lower frame supporting protrusion 145 of the housing 140 may be heat-sealed and fixed. . Third, when the bobbin 110 and the inner frame 151 of the upper elastic member 150 are assembled 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, when the outer frame 152 of the housing 140 and the upper elastic member 150 is fixed fourth and last, the third through hole 152a coupled to the upper frame support protrusion 144 of the housing 140 is Bonding may be achieved through application of an adhesive such as epoxy or the like. However, this assembly sequence can be changed, that is, the first to third assembly processes are thermal fusion, and bonding can be performed during the fourth and final fixing steps. This can be accompanied by deformation such as warping during thermal fusion, and this can be supplemented by bonding at the last stage.

In particular, since the upper elastic member 150 is provided in a two-division structure as described above, the number of the upper support protrusions 113 is greater than the number of the lower support protrusions 114 to separate the upper elastic member 150 . It is possible to prevent the lifting phenomenon that may occur in this case.

The second lens driving unit 200 is a lens driving unit for handshake correction, 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 . may be included, 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 that implements another type of auto-focusing function in addition to the above-described configuration. That is, it is also possible to configure an optical module using a single lens moving actuator or a refractive index variable actuator instead of using a voice coil motor type auto-focusing actuator. That is, the first lens driving unit 100 may be 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. 3 and 11 , the base 210 may be provided in a substantially rectangular shape, and the support member 220 may be fixed to a straight surface. When the cover member 300 is adhesively fixed to the base 210 , a step 211 may be formed so that an adhesive may be applied thereto. In this case, the bottom surface of the step may be in surface contact with the end of the cover member 300 .

A support groove having a corresponding size may be formed on a surface of the base 210 facing the portion where the terminal 251 is formed of the circuit board 250 . The support groove is formed to be concave inward to a predetermined depth from the outer circumferential surface of the base 210 , so that the portion in which the terminal 251 is formed does not protrude outward or the amount of protrusion can be adjusted.

Meanwhile, the step 211 may guide the cover member 300 coupled to the upper side, and may be coupled so that an end of the cover member is in surface contact. In this case, the end of the step 211 and the cover member 300 may be adhesively fixed and sealed by an adhesive or the like.

A support member seating groove 214 into which the support member 220 can be inserted may be concavely formed in the upper surface of the base 210 . An adhesive may be applied to the support member seating groove 214 to fix the support member 220 so that it does not move. An end of the support member 220 may be inserted or disposed in the support member seating groove 214 to be fixed through an adhesive or the like.

A plurality or at least one of the seating grooves 214 may be formed on a straight surface on which the support member 220 is installed, and the seating groove 214 may have a substantially rectangular shape. In addition, as shown in FIG. 12, two seating grooves 214 may be provided for each straight surface in the embodiment, which may increase or decrease depending on the shape of the support member 220, and may be formed of one, 2 More than one dog may be formed.

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

A tapered inclined surface (not shown) may be formed on at least one surface of the detection sensor seating groove 215 . Epoxy injection for assembling the detection sensor 240 may be configured to be performed more smoothly. In addition, a separate epoxy may not be injected into the detection sensor seating groove 215 , but the detection sensor 240 may be fixed by injecting epoxy or the like. The position of the detection sensor seating groove 215 may be disposed at or near the center of the second coil 230 . Alternatively, the center of the second coil 230 may coincide with the center of the detection sensor 240 . According to the present embodiment, it is preferable that the detection sensor seating groove 215 is installed at the edge of the base 210 . This is to minimize interference with the support member 220 .

On the other hand, on the lower surface of the base 210, a seating portion to which the filter is installed may be formed. The filter may be an infrared cut filter. However, the present invention 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 FIG. 10 , the support member 220 may be individually disposed on the second surface 142 of the housing 140 to support the housing 140 by being spaced apart from the base 210 by a predetermined distance. One end of the support member 220 may be inserted or disposed in the support member seating groove 214 to be fixed with an adhesive member such as epoxy, and the other end may be fixed to the upper end of the side wall of the housing 140 .

Since the support member 220 according to the present embodiment is disposed on the second surface 142 of the housing, a total of four may be installed symmetrically. However, the present invention is not limited thereto, and it is also possible to consist of eight pieces, two for each straight surface. In addition, the support member 220 may be electrically connected to the upper elastic member 150, or may be electrically connected to the straight surface of the upper elastic member.

The support member 220 of the embodiment may include a first fixing part 221 connected to the upper side of the housing 140 , elastically deformable parts 222 , 223 , a second fixing part 224 , and a connection part 225 . have.

The first fixing part 221 is a place connected to the upper end of the second surface 142 of the housing 140, and a concave groove is formed at a position corresponding to the coupling protrusion protruding from the second surface 142 to fit them. can be fixed In addition, since the support member 220 is formed as a separate member from the upper elastic member 150 , the first fixing part 221 may electrically connect the support member 220 and the upper elastic member 150 through soldering or the like. have. That is, the upper elastic member divided into two may be electrically connected to two of the four support members to apply a current to the first coil 120 .

The elastically deformable parts 222 and 223 may be bent at least once to form a pattern of a predetermined shape. According to the present embodiment, the elastically deformable portion may include the first and/or second elastically deformable portions 222 and 223, and may be formed with the connecting portion 225 interposed in the middle, and also It may be provided in a shape corresponding to each other. For example, as shown in FIG. 10 , when the first elastically deformable part 222 is provided in a zigzag shape through bending twice or more, the second elastically deformable part 223 may also be formed to correspond thereto, but is not limited thereto. Only the first elastically deformable part 222 or the second elastically deformable part 223 may be provided in another shape. The above is only an example, and in addition, it is possible to configure to have various patterns such as a zigzag shape. At this time, the first and second elastically deformable parts 222 and 223 may be configured as one without distinguishing, and it is also possible to configure only the suspension wire without such a pattern. According to the present embodiment, the linear portions of the first and second elastic deformation portions 222 and 223 may be formed to be substantially parallel to a plane perpendicular to the optical axis.

When the housing 140 moves in the second and/or third direction, which is a plane perpendicular to the optical axis, the elastic deformable parts 222 and 223 are slightly elastic in the direction in which the housing 140 moves or in the longitudinal direction of the support member. can be deformed. Then, the housing 140 can move in the second and third directions that are substantially perpendicular to the optical axis without a change in position with respect to the first direction, which is a direction parallel to the optical axis, thereby increasing the accuracy of handshake correction. This utilizes the characteristic that the elastically deformable parts 222 and 223 can be stretched in the longitudinal direction. Here, the longitudinal direction may be a direction connecting the first and second fixing parts 221 and 224 .

The second 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 elastically deformable parts 222 and 223, but is not limited thereto, and a narrow or corresponding width. may have According to this embodiment, the second fixing part 224 may be divided into two as shown in FIG. 10 , and each may be inserted or disposed in the support member seating groove 214 of the base 210 . The second fixing part 224 may be fixedly coupled by an adhesive member such as epoxy. However, the present invention is not limited thereto, and the support member seating groove 214 may correspond to the second fixing part 224 to fit and couple them. Alternatively, one second fixing part 224 may be formed, or two or more may be formed, and correspondingly, a support member seating groove 214 may be formed in the base 20 .

The connection part 225 may be disposed in the middle of the elastically deformable parts 222 and 223 as described above, but is not limited thereto, and may be disposed in connection with one elastically deformable part. Also, the connection part 225 . may be provided in a plate shape to perform a damping role, and a plurality of holes or grooves are formed in the connection part 225 to connect the connection part 225 and the housing 140 through the holes or grooves to a UV damper, etc. A damping unit can be configured by using it. In the present embodiment, the first and second elastically deformable parts 222 and 223 are provided in pairs, respectively, but the first and second fixing parts 221 and 224 are formed as one body, so that the first and second elastic deformation parts 222 and 223 are provided as a single body. The first and second elastic deformation parts 222 and 223 may be fixed to the housing 140 and the base 210 at once. In addition, each end of the support member 220 has one or more fixing parts, and one or more elastic deformation parts may be included between both ends of the support member 220 .

On the other hand, as described above, the upper elastic member 150, as shown in FIGS. 5 and 6, has a two-division structure, and first and second upper elastic members 150a and 150b receiving power of different polarities are applied. can be divided into Accordingly, a terminal portion (not shown) for supplying power to the first and second upper elastic members 150a and 150b may be separately provided. The terminal unit (not shown) may be formed only in two places among the four support members 220 since it receives power from a positive (+) pole or a negative (-) pole.

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 to be spaced apart from the lower side of the magnet 130 by a predetermined distance.

According to the present embodiment, a total of four second coils 230 may be installed on the four corners of the circuit board 250, but the present invention is not limited thereto, and one for the second direction and one for the third direction. Only two such as dogs may be installed, or more than four may be installed. In the present embodiment, a circuit pattern is formed in the shape of the second coil 230 on the circuit board 250 , and an additionally separate second coil 230 may be disposed on the circuit board 250 , but is not limited thereto. Also, a separate second coil 230 may be disposed on the circuit board 250 without forming a circuit pattern in the shape of the second coil 230 on the circuit board 250 . Alternatively, the second coil 230 may be configured by winding a wire in a donut shape, or the second coil 230 may be formed in an FP coil shape and electrically connected to the circuit board 250 .

The circuit member 231 including 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 , may be disposed spaced apart from the base 210 , may be formed on a separate substrate, and the substrate may be stacked on the circuit board 250 . You can also connect

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. As shown in FIG. 12, a total of two detection sensors 240 may be installed in the corner of the base 210 disposed on the lower side of the circuit board 250, and the mounted detection sensor 240 is the base. It may be inserted into the sensing sensor seating groove 215 formed in the 210 . The lower surface of the circuit board 240 may be a surface opposite to the surface on which the second coil 230 is disposed.

The circuit board 250 is coupled to the upper surface of the base 210, and as shown in FIG. 12, a through hole may be formed at a corresponding position so that the support member seating groove 214 can be exposed. A surface on which the bent terminal 251 is installed may be formed on the circuit board 250 . In this embodiment, the circuit board may form a surface on which one bent terminal 251 is installed. A plurality of terminals 251 are disposed on the surface on which the terminal 251 is installed, and may supply current to the first and second coils 120 and 230 by receiving external power. The number of terminals formed on the surface on which the terminal 251 is installed may be increased or decreased according to the types of components that need to be controlled. Meanwhile, according to the present embodiment, the circuit board may be provided as an FPCB. However, the present invention 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 using a surface electrode method or the like.

Meanwhile, the detection sensor 240 may be disposed on 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 is on the upper surface of the circuit board 250 , and the detection sensor 240 is on the lower surface of the circuit board 250 . can be installed. According to this embodiment, it is preferable that the detection sensor 240, the second coil 230, and the magnet 130 are disposed on the same axis.

According to this configuration, the second coil 230 may perform handshake correction by moving the housing 140 in the second and/or third directions through interaction with the magnet 130 .

The cover member 300 may be provided in a substantially box shape, and may surround the first and second lens driving units 100 and 200 described above. At this time, as shown in FIG. 1 , a groove portion is formed at a position corresponding to the step 211 of the cover member 300 , and an adhesive or the like may be injected through the groove portion. At this time, the injected adhesive is set to have a low viscosity, so that the adhesive injected through the groove may permeate into the surface contact position of the step 211 and the end of the cover member 300 . As described above, the adhesive member applied to the groove fills a gap between the surfaces facing each other of the cover member 300 and the base 210 through the groove, so that the cover member 300 is coupled to the base 210 . It may be configured to be able to be sealed as it is.

On the other hand, a camera module may be configured by forming a recess in the lower portion of the base 210 , coupling an image sensor and a printed circuit board thereto, and assembling a lens barrel to the bobbin 110 . Alternatively, a separately configured 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 above-described camera module is applicable to mobile devices such as mobile phones.

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

In addition, after passing the gaze of the first coil 120 and the end 121 of the vertical wire through the grooves 116 formed on both sides of the winding protrusion 115 , solder (S) on the upper surface of the upper elastic member 150 . Since it is fixed to , it is possible to omit the process of arranging after winding the line of sight and the vertical wire on the winding protrusion 115, thereby shortening the process time. In addition, it is possible to prevent an assembly defect caused by touching other parts during the process of arranging the line of sight and the vertical line.

In addition, as shown in FIG. 6 , the line of sight and the end of the vertical wire of the first coil 120 pass through the groove 116 and can be pulled out to the inside of the bobbin 110 to a sufficient length. Even if disconnection occurs in the first coil 120 , the length of the first coil 120 has a margin, so that the soldering process can be performed again, and assembly defects can be minimized.

Although the embodiments according to the present embodiment have been described above, it will be understood that this is merely an example, and those of ordinary skill in the art can make various modifications and equivalent embodiments therefrom. Accordingly, the true technical protection scope of this embodiment should be defined by the following claims.

100; a first lens driving device 110; bobbin
115; winding projection 116; groove
116a; first groove 116b; 2nd groove
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 (25)

At least one lens is installed inside, and a first coil is installed on an outer circumferential surface of the bobbin, and a housing for supporting a magnet disposed around the bobbin is provided. By interaction between the magnet and the first coil a first lens driving unit for moving the bobbin and the first coil in a first direction parallel to an optical axis; and
a base disposed to be spaced apart from the bobbin and the first lens driving unit by a predetermined distance, and movably supporting the first lens driving unit in second and third directions with respect to the base, and supplying power to the first coil a support member capable of being capable of, and a second coil disposed to face the magnet, the entire first lens driving unit including the bobbin is orthogonal to the optical axis by interaction between the magnet and the second coil, a second lens driving unit for moving in the second and third directions different from each other; and
The bobbin is
A lens driving device comprising at least one groove on an upper surface having a width and a depth greater than a diameter of the first coil for accommodating the first coil. According to claim 1, wherein the first lens driving unit,
a pair of winding protrusions protruding from an outer circumferential surface of the bobbin in a direction perpendicular to the optical axis of the lens; and
Includes; upper and lower elastic members having an inner frame coupled to the bobbin and an outer frame coupled to the housing;
The line of sight and the vertical line of the first coil are respectively wound on a pair of the winding projections,
The magnet is fixedly disposed on the housing at a position corresponding to the curved surface of the first coil,
The upper elastic member is a lens driving device for closing the opening of the groove in the engaging position. According to claim 2, wherein the groove,
A lens driving device including first and second grooves disposed on the left and right sides of the winding projection.
According to claim 2, wherein the winding projection,
A lens driving device for preventing separation of both ends of the wound first coil by forming a locking protrusion at an end thereof. 3. The method of claim 2,
and a cover member coupled to the base to surround the first and second lens driving units.
According to claim 5, wherein the bobbin,
a first stopper protruding from the upper surface and having a first height; and
Includes; a second stopper protruding in the circumferential direction on the side surface of the upper surface;
The first stopper prevents a collision between the inner surface of the cover member and the body of the bobbin, and the second stopper prevents a collision between the bobbin and the base. 7. The method of claim 6, wherein the housing comprises:
A lens driving device having a seating groove having a size corresponding to the second stopper at a position corresponding to the second stopper.
The method of claim 5, wherein the housing comprises:
a first surface provided at the corner where the four magnets are installed;
a second surface in which the first surfaces are interconnected and formed as a flat surface of a predetermined length on which the support member is disposed;
a third stopper protruding from the upper surface to prevent interference with the cover member; and
A lens driving device comprising a; a fourth stopper formed to protrude from the bottom surface to prevent interference with the base.
According to claim 8, wherein the second surface,
an escape groove for preventing interference between the support member and the housing; and
It includes a support member coupling portion to which the support member is coupled,
The support member is composed of a total of four lens driving device installed to be symmetrical to each other. 10. The method of claim 9,
The lens driving device further comprising a; step portion formed on the upper side of the escape groove.
delete delete According to claim 1, wherein the support member,
a first fixing part fixedly coupled to the housing;
first and second elastic deformation portions extending from the first fixing portion; and
and a second fixing part fixedly coupled to the base.
The method according to claim 13, wherein at least four support members are provided to support the second lens driving unit,
The first and second elastic deformation parts are in the form of a wire without a pattern,
The second fixing part is formed to be wider than the width of the first and second elastically deformable parts. 14. The method of claim 13, wherein the first and second elastic deformation portion,
A lens driving device provided in a bent shape at least once or more to form a pattern of a certain shape.
14. The method of claim 13, wherein the first and second elastic deformation portion,
A lens driving device having any one of an N-shape and a zigzag shape in which a straight portion is formed in a direction perpendicular to the optical axis through bending at least four times.
delete delete 14. The method of claim 13, wherein the base,
A lens driving device in which a support member seating groove is concavely formed at a position corresponding to the second fixing part of the support member. According to claim 1,
and the second lens driving unit includes a circuit board on which detection sensors for detecting positions in the second and third directions of the first lens driving unit with respect to the base are disposed.
The method of claim 20, wherein the second coil,
A lens driving device installed on an upper surface of the circuit board installed on the upper side of the base. The method of claim 20, wherein the second coil,
A lens driving device provided as a substrate having a pattern coil on an upper surface of the circuit board installed on the upper side of the base, and laminated to the circuit board. According to claim 1, wherein the second coil,
A lens driving device integrally formed in the form of a surface electrode on the upper surface of the base.
According to claim 1, wherein the magnet,
A lens driving device used in combination as a magnet for autofocus that moves the bobbin in the first direction, and a magnet for image stabilization that moves the housing in the second and third directions.
image sensor;
a printed circuit board on which the image sensor is mounted; and
A camera module comprising a; the lens driving device according to any one of claims 1 to 10, 13 to 16, and 19 to 24.

Images