KR20190117972A - A lens moving apparatus, camera module and optical instrument including the same - Google Patents

Abstract

According to an embodiment, a lens driving device comprises a substrate, a housing including a first side part and a second side part disposed on the substrate and located opposite each other and a third side part and a fourth side part located between the first side part and the second side part and located opposite each other, a bobbin disposed in the housing, a first magnet disposed on the first side part of the housing, a second magnet disposed on the second side part of the housing, a third magnet disposed on the third side part of the housing, a dummy member disposed on the fourth side part of the housing, a first coil disposed in the bobbin and opposite to the first magnet, and a second coil disposed on the bobbin and opposite to the second magnet. The substrate comprises a third coil, and a length of the third magnet in an optical axis direction is shorter than a length of the first magnet in the optical axis direction. Therefore, the present invention is capable of reducing a consumption of current.

Description

Lens driving device, camera module and optical device including the same {A LENS MOVING APPARATUS, CAMERA MODULE AND OPTICAL INSTRUMENT INCLUDING THE SAME}

Embodiments relate to a lens driving device, a camera module and an optical device including the same.

Since the camera module for ultra small and low power consumption is difficult to apply the technology of the voice coil motor (VCM) used in the existing general camera module, the related research has been actively conducted.

In the case of a camera module mounted in a small electronic product such as a smartphone, the camera module may be frequently shocked during use, and the camera module may be minutely shaken due to the shaking of the user during shooting. In view of such a situation, in recent years, a technique for additionally installing an image stabilizer to a camera module has been developed.

The embodiment reduces the magnetic field interference between the magnets included in two adjacent lens driving devices mounted on the dual camera module, and balances the electromagnetic force in the X-axis direction and the Y-axis direction to perform the OIS function. It provides a lens driving device that can be adjusted to reduce the current consumption by reducing the weight of the OIS movable portion, and a camera module and an optical device including the same.

Lens driving apparatus according to the embodiment includes a substrate; A housing comprising a first side and a second side disposed on the substrate and positioned opposite each other, and a third side and a fourth side positioned between the first side and the second side and positioned opposite each other; A bobbin disposed within the housing; A first magnet disposed on the first side of the housing; A second magnet disposed on the second side of the housing; A third magnet disposed on the third side of the housing; A dummy member disposed on the fourth side of the housing; A first coil disposed in the bobbin and opposed to the first magnet; And a second coil disposed on the bobbin and opposed to the second magnet, wherein the substrate includes a third coil, and the length of the third magnet in the optical axis direction is the length of the first magnet in the optical axis direction. Can be shorter.

The length of the third magnet in the optical axis direction may be shorter than the length of the second magnet in the optical axis direction.

The third magnet may include a first magnet part including a first N pole and a first S pole; And a second magnet part including a second N pole and a second S pole.

The first magnet part and the second magnet part may be spaced apart in a direction perpendicular to the optical axis direction.

The third magnet may include a first partition wall positioned between the first magnet part and the second magnet part.

The length in the optical axis direction of the first magnet and the length in the optical axis direction of the second magnet may be the same.

The width of the first magnet may be smaller than the width of the third magnet.

Each of the first magnet and the second magnet is located between a third magnet part, a fourth magnet part, and the third magnet part and the fourth magnet part, and the third magnet part and the fourth magnet in the optical axis direction. It may include a second partition wall separating the parts from each other.

The third coil may include a coil unit facing each of the first to third magnets.

The dummy member may overlap the third magnet in a direction perpendicular to the optical axis direction and toward the fourth side from the third side of the housing and may not overlap the first and second coils.

The embodiment reduces the magnetic interference between the magnets included in two adjacent lens driving devices mounted on the dual camera module, and balances the electromagnetic force in the X-axis direction with the electromagnetic force in the Y-axis direction to perform the OIS function. Can reduce the current consumption by reducing the weight of the OIS moving parts.

1 is a perspective view of a lens driving apparatus according to an embodiment.
FIG. 2 is an exploded view of the lens driving device of FIG. 1.
3 is a plan view of the lens driving apparatus except for the cover member.
4A is an exploded perspective view of the bobbin, the first coil unit, the second coil unit, and the sensing magnet.
4B is a combined perspective view of the bobbin, the first coil unit, the second coil unit, and the sensing magnet.
5A is a perspective view of a housing, first to third magnets, and a dummy member.
5B is a perspective view of the housing, the first position sensor, and the circuit board.
6 is a plan view of the upper elastic member.
7 is a view for explaining the electrical connection relationship between the upper elastic member, the first position sensor, and the support member.
8 is a bottom view of the lower elastic member and the housing.
9A shows an exploded perspective view of the second coil, circuit board, and base.
9B shows the placement of a second position sensor for OIS feedback drive.
FIG. 10A is a cross-sectional view of the lens driving apparatus in the AB direction of FIG. 3.
FIG. 10B is a sectional view of the lens driving device in the CD direction of FIG. 3.
FIG. 10C is a cross-sectional view of the lens driving apparatus in the EF direction of FIG. 3.
FIG. 10D is a cross-sectional view of the lens driving apparatus in the GH direction of FIG. 3.
11 illustrates a perspective view of the first to third magnets, the dummy member, and the third to fifth coil units.
12 is a side view of the components shown in FIG. 11.
FIG. 13 is a plan view of the components shown in FIG. 11. FIG.
14 shows magnetic force lines of the third magnet for the fifth coil unit, and magnetic force lines of the first magnet for the third coil unit.
FIG. 15 illustrates an electromagnetic force in the Y-axis direction due to interaction between the first and second magnets and the third and fourth coil units illustrated in FIG. 11, and an X axis due to the interaction between the third magnet and the fifth coil unit. The simulation results for the electromagnetic force in the direction are shown.
16 is an exploded perspective view of a camera module according to an embodiment.
17 is a perspective view of a camera module according to another embodiment.
18 is a perspective view of a portable terminal according to an embodiment.
19 is a block diagram of the portable terminal shown in FIG.

DETAILED DESCRIPTION Hereinafter, exemplary embodiments of the present invention will be described with reference to the accompanying drawings.

In the description of the embodiments, when described as being formed on an "on or under" of each element, the on or under is It includes both the two elements are in direct contact with each other (directly) or one or more other elements are formed indirectly between the two elements (indirectly). In addition, when expressed as "on" or "under", it may include the meaning of the downward direction as well as the upward direction based on one element.

In addition, the relational terms such as “first” and “second”, “upper / upper / up” and “lower / lower / lower”, etc., which are used hereinafter, refer to any physical or logical relationship or order between such entities or elements. May be used only to distinguish one entity or element from another entity or element without necessarily requiring or implying. Like reference numerals denote like elements throughout the description of the drawings.

In addition, the terms "comprise", "comprise", or "having" described above mean that the corresponding component may be included, unless otherwise stated, and thus excludes other components. It should be construed that it may further include other components. In addition, terms such as "corresponding" described above may include at least one of "opposite" or "overlapped" meanings.

For convenience of description, the lens driving apparatus according to the embodiment will be described using the Cartesian coordinate system (x, y, z), but may be described using other coordinate systems, but the embodiment is not limited thereto. In each drawing, the x-axis and the y-axis mean a direction perpendicular to the z-axis, which is the optical axis direction, and the z-axis direction, which is the optical axis direction, is called a 'first direction', and the x-axis direction is called a 'second direction', and y The axial direction may be referred to as a 'third direction'. In addition, the optical axis direction may be defined as the optical axis direction of the lens coupled to the lens driving device.

The image stabilization function, which is applied to small camera modules of mobile devices such as smartphones or tablet PCs, moves the lens in a direction perpendicular to the optical axis direction or cancels the vibration (or movement) caused by user's hand shake. It may be a function of tilting the lens based on the reference.

In addition, the 'auto focusing function' may be a function of automatically focusing on a subject by moving the lens in the optical axis direction according to the distance of the subject in order to obtain a clear image of the subject on the image sensor.

Hereinafter, the lens driving apparatus may mean a "VCM (Voice Coil Motor)", a "lens driving motor" or an actuator, and may be represented by this.

1 is a perspective view of a lens driving apparatus 100 according to an embodiment, FIG. 2 is an exploded view of the lens driving apparatus 100 of FIG. 1, and FIG. 3 is a view of the lens driving apparatus 100 except for the cover member 300. Top view.

1 to 3, the lens driving apparatus 100 includes a bobbin 110, a first coil 120, a first magnet 130-1, a second magnet 130-2, and a third magnet ( 130-3), a dummy member 135, a housing 140, an upper elastic member 150, a lower elastic member 160, a second coil 230, and a base 210.

The lens driving apparatus 100 may further include a circuit board 250 and a support member 220.

In addition, the lens driving apparatus 100 may include a circuit board 190 and a first position sensor 170 for driving AF feedback.

In addition, the lens driving apparatus 100 may include a sensing magnet 180 to detect the magnetic force of the first position sensor 170. In addition, the lens driving apparatus 100 may further include a balancing magnet for reducing the influence of the magnetic field of the sensing magnet.

In addition, the lens driving apparatus 100 may further include a second position sensor 240 (see FIG. 9B) for OIS (Optical Image Stabilizer) feedback driving. In addition, the lens driving apparatus 100 may further include a cover member 300.

The embodiment can provide a lens driving apparatus including an OIS function that can reduce or suppress magnetic interference between magnets included in two adjacent lens driving apparatuses mounted on a dual camera module.

In addition, the embodiment can balance the electromagnetic force generated in the X-axis direction and the electromagnetic force generated in the Y-axis direction to perform the OIS function.

In addition, the embodiment can reduce the current consumption by reducing the number of the OIS magnet, by reducing the size of the OIS magnet, by reducing the weight of the OIS movable portion.

First, the bobbin 110 will be described.

The bobbin 110 is disposed inside the housing 140 and is aligned with the optical axis OA by electromagnetic interaction between the first coil 120 and the first and second magnets 130-1 and 130-2. Or in a first direction (eg, Z-axis direction).

4A is an exploded perspective view of the bobbin 110, the first coil unit 120-1, the second coil unit 120-2, and the sensing magnet 180, and FIG. 4B is a bobbin 110 and the first coil. A unit perspective view of the unit 120-1, the second coil unit 120-2, and the sensing magnet 180 is illustrated.

4A and 4B, the bobbin 110 may have an opening for mounting a lens or lens barrel. For example, the opening of the bobbin 110 may be in the form of a through hole penetrating the bobbin 110, and the shape of the opening of the bobbin 110 may be circular, elliptical, or polygonal, but is not limited thereto.

A lens may be directly mounted to the opening of the bobbin 110, but is not limited thereto. In another embodiment, a lens barrel for mounting or coupling at least one lens may be coupled or mounted to the opening of the bobbin 110. have. The lens or lens barrel may be coupled to the inner circumferential surface 110a of the bobbin 110 in various ways.

The bobbin 110 may include first sides spaced apart from each other and second sides spaced apart from each other. Each of the second sides may connect two adjacent first sides to each other. For example, the first sides of the bobbin 110 may be represented by sides, and the second sides of the bobbin 110 may be represented by corners or corners.

One of the sides of the bobbin 110 (eg, the first side) may be provided with a first seating groove 41 for mounting, seating, or placing the first coil unit 120-1. Any other one of the sides of the 110 (eg, the second side) may be provided with a second seating groove 42 for mounting, seating, or placing the second coil unit 120-2.

For example, the first seating groove 41 and the second seating groove 42 may be provided at two sides positioned opposite to each other among the sides of the bobbin 110, and The structure may be recessed from the outer surfaces, and may have a shape that matches the shape of the first coil unit 120-1 and the second coil unit 120-2.

In another embodiment, one side of the bobbin 110 may be provided with a first protrusion for mounting or winding the first coil unit 120-1, and any other of the sides of the bobbin 110 may be provided. A second protrusion for mounting or winding the two coil units 120-2 may be provided.

The bobbin 110 may include a first groove 18a provided on one side of the other side (eg, the fourth side) for mounting or disposing the sensing magnet 180. For example, the fourth side of the bobbin 110 may be a side where the first coil unit 120-1 or the second coil unit 120-2 is not disposed.

In addition, the bobbin 110 may include a second groove provided on one side of the other side (eg, the third side) for mounting or disposition of the balancing sensing magnet. For example, the third side of the bobbin 110 may be a side that is opposite to the third side of the bobbin 110 without the first coil unit 120-1 or the second coil unit 120-2. have.

The bobbin 110 may include a protrusion 111 provided at corner portions. The protrusion 111 may protrude in a direction parallel to a straight line that passes through the center of the opening of the bobbin 110 and is perpendicular to the optical axis direction, but is not limited thereto.

The protrusion 111 of the bobbin 110 may correspond to the groove 145 of the housing 140, and may be inserted or disposed in the groove 145 of the housing 140, and the bobbin 110 may be constant with respect to the optical axis. It can be suppressed or prevented from moving or rotating beyond the range.

An upper surface of the corner portion of the bobbin 110 may be provided with an escape groove 122a for avoiding spatial interference with the first frame connecting portion 153 of the upper elastic member 150.

Although not shown in FIG. 4A, the bobbin 110 may include a first stopper protruding from the upper surface and a second stopper protruding from the lower surface. The first and second stoppers of the bobbin 110, even when the bobbin 110 moves in the first direction for the auto focusing function, even if the bobbin 110 is moved beyond the prescribed range by an external impact or the like, the bobbin 110 The upper surface of the cover member 300 can be prevented from directly colliding with the inside of the upper plate of the cover member 300, the lower surface of the bobbin 110 to the base 210, the second coil 230, or / and the circuit board 250 Direct collision can be prevented.

A first coupling part may be provided on the upper surface of the bobbin 110 to be coupled to and fixed to the upper elastic member 150, and a second coupling to be coupled to and fixed to the lower elastic member 160 on the lower surface of the bobbin 110. An additional may be provided.

For example, in FIGS. 4A and 4B, the first and second coupling parts of the bobbin 110 may be in a planar shape, but the present invention is not limited thereto. In another embodiment, the first and second coupling parts of the bobbin 110 may be different from each other. It may also be a groove or a projection.

Next, the first coil 120 will be described.

The first coil 120 includes a first coil unit 120-1 and a second coil unit 120-2 disposed on two sides opposite to each other among the sides of the bobbin 110. . Here, the "coil unit" may be expressed by replacing the coil unit, the coil block, the coil ring, or the like.

For example, the first coil unit 120-1 may be disposed in the first seating groove 41 of the bobbin 110, and the second coil unit 120-2 may be disposed in the second seating groove of the bobbin 110. 42, but the present invention is not limited thereto. In another embodiment, each of the first coil unit 120-1 and the second coil unit 120-2 may include at least one provided on the side of the bobbin 110. It may be wound on the protrusions or mounted on at least one protrusion provided on the side of the bobbin 110.

Each of the first coil unit 120-1 and the second coil unit 120-2 may include at least one of an elliptic shape, a transistor shape, and a closed curve shape. For example, each of the first coil unit 120-1 and the second coil unit 120-2 may be in the form of a coil ring wound to rotate about an axis perpendicular to the optical axis passing through the center of the opening of the bobbin 110.

For example, each of the first coil unit 120-1 and the second coil unit 120-2 may include a first portion 3a, a second portion 3b disposed below the first portion 3a, and a first portion. It may include a connecting portion (3c) connecting the (3a) and the second portion (3b) to each other, it may be a closed curve by the first to third portions (3a, 3c).

The third part 3c is a first connection part 3c1 connecting one end of the first part 3a and one end of the second part 3b and the other end and the second part 3b of the first part 3a. It may include a second connecting portion (3c2) for connecting the other end of the.

For example, the first portion 3a may be represented by a "first straight portion", the second portion 3b may be represented by a "second straight portion", and the third portion 3c may be represented by a "curve portion". ", The first connecting portion 3c1 may be represented by the first curved portion, and the second connecting portion 3c2 may be represented by the second curved portion.

The first coil 120 is disposed between the first coil unit 120-1 and the second coil unit 120-2, and the first coil unit 120-1 and the second coil unit 120-2. It may include a connection (not shown) or a connection coil for connecting to each other.

One end of the connecting portion of the first coil 120 may be connected to one end of the first coil unit 120-1, and the other end of the connecting portion of the first coil 120 may be connected to one end of the second coil unit 120-2. Can be connected. That is, the first coil unit 120-1 and the second coil unit 120-2 may be connected in series by the connecting portion of the first coil 120.

The connection portion of the first coil 120 may face the third magnet 130-1 and may be disposed between the third magnet 130-1 and the bobbin 110.

According to another embodiment, the connection portion of the first coil 120 may face the dummy member 135 and may be disposed between the dummy member 135 and the bobbin 110.

In another embodiment, the first coil unit 120-1 and the first coil unit 120-2 may be separated or spaced apart from each other.

When a driving signal (eg, a driving current) is supplied to the first coil 120, the electromagnetic interaction between the first coil 120 and the first and second magnets 130-1 and 130-2 is performed. The electromagnetic force may be formed, and the bobbin 110 may be moved in the direction of the optical axis OA by the formed electromagnetic force.

At the initial position of the AF movable portion, the bobbin 110 can be moved in the upper or lower direction (eg, Z-axis direction), which is called bidirectional driving of the AF movable portion. Alternatively, the bobbin 110 may be moved upward in the initial position of the AF movable part, which is referred to as unidirectional driving of the AF movable part.

Referring to FIG. 10B, at the initial position of the AF movable portion, the first coil unit 120-1 is perpendicular to the optical axis, and the first coil unit 120-1 (or the first coil unit 120-1) at the optical axis. May be opposed to or overlap with the first magnet 130-1 in the direction toward the center), but not opposite or overlap with the third magnet 130-3.

At the initial position of the AF movable portion, the second coil unit 120-2 is perpendicular to the optical axis and in a direction toward the second coil unit 120-2 (or the center of the second coil unit 120-2) at the optical axis. The second magnet 130-2 may face or overlap the third magnet 130-2, but may not face or overlap the third magnet 130-3.

The AF movable portion may include bobbin 110 and components coupled to bobbin 110. For example, the AF movable unit may include a bobbin 110, a first coil 120, a sensing magnet 180, and / or a balancing magnet. In addition, the AF movable unit may further include a lens mounted to the bobbin 110.

And the initial position of the AF movable portion is the initial position of the AF movable portion without applying power to the first coil 120 or the AF movable as the upper and lower elastic members 150 and 160 are elastically deformed only by the weight of the AF movable portion. It may be the location where the part is placed.

In addition, the initial position of the bobbin 110 is the position where the AF movable part is placed when gravity acts in the direction of the base 210 in the bobbin 110 or vice versa. Can be.

Next, the sensing magnet 180 will be described.

The sensing magnet 180 may be disposed on one side of the side portions of the bobbin 110 in which the first coil unit 120-1 and the second coil unit 120-2 are not disposed. For example, the sensing magnet 180 may be disposed in the first groove 180a of the bobbin 110.

When the lens driving apparatus 100 includes a balancing magnet, the balancing magnet may be any other one in which the first coil unit 120-1 and the second coil unit 120-2 are not disposed among the sides of the bobbin 110. May be disposed on one side. For example, the balancing magnet may be disposed in the second groove of the bobbin 110 described above.

The balancing magnet may be used to offset the magnetic influence of the sensing magnet 180 and to balance the weight with the sensing magnet 180, and thus accurate AF operation may be performed.

The sensing magnet 180 (and / or balancing magnet) may be parallel to the direction in which the interface between the N pole and the S pole is perpendicular to the optical axis direction, but is not limited thereto. For example, in another embodiment, the interface between the N pole and the S pole may be parallel to the optical axis direction.

For example, the sensing magnet 180 may be a single-pole magnetized magnet having one N pole and one S pole, but is not limited thereto. In another embodiment, the sensing magnet 180 may be a positive electrode magnetized magnet.

The sensing magnet 180 is bobbin 110 due to the interaction between the first coil unit 120-1 and the first magnet 130-1 and the interaction between the second coil unit and the second magnet 130-2. The first position sensor 170 may detect the intensity of the magnetic field of the sensing magnet 180 moving in the optical axis direction, and output an output signal according to the detected result. Can be.

For example, the controller 830 of the camera module or the controller 780 of the terminal may detect the displacement of the bobbin 110 in the optical axis direction based on an output signal output by the first position sensor 170.

In other embodiments, the sensing magnet 180 or / and the balancing magnet may be omitted, the first position sensor may be mounted to the bobbin, not the housing, and the mutually between the first coil 120 and the first magnet 130. As the bobbin 110 and the first position sensor move in the optical axis direction by the action, the first position sensor may sense the intensity of the magnetic field of the first magnet and output an output signal according to the detected result.

Next, the housing 140 will be described.

The housing 140 accommodates at least a portion of the bobbin 110 therein, and includes a first magnet 130-1, a second magnet 130-2, a third magnet 130-3, and a dummy member 135. ).

The housing 140 may be expressed as an 'OIS moving part'. The OIS movable part may be moved together with the AF movable part by OIS driving by interaction between the first to third magnets and the second coil.

5A is a perspective view of the housing 140, the first to third magnets 130-1 to 130-3, and the dummy member 135, and FIG. 5B is a housing 140, the first position sensor 170. And a perspective view of the circuit board 190.

5A and 5B, the housing 140 may be disposed inside the cover member 300 and may be disposed between the cover member 300 and the bobbin 110. The housing 140 may accommodate the bobbin 110 inside.

The outer surface of the housing 140 may be spaced apart from the inner surface of the side plate of the cover member 300, and the housing 140 may be moved by OIS driving by the spaced space between the housing 140 and the cover member 300. Can be.

The housing 140 may have a hollow pillar shape including an opening or a hollow.

For example, housing 140 may have a polygonal (eg, rectangular, or octagonal) or circular opening.

The housing 140 may include a plurality of side parts 141-1 to 141-4 and a plurality of corner parts 142-1 to 142-4.

For example, the housing 140 may include first to fourth sides 141-1 to 141-4 and first to fourth corners 142-1 to 142-4.

The first to fourth sides 141-1 to 141-4 may be spaced apart from each other. Each of the corner portions 142-1 to 142-4 of the housing 140 has two adjacent sides 141-1 and 141-2, 141-2 and 141-3, and 141-3 and 141-4 and 141. It may be disposed or positioned between -4 and 141-1, and the sides 141-1 to 141-4 may be connected to each other.

For example, the corner parts 142-1 to 142-4 may be located at a corner or a corner of the housing 140. For example, the number of sides of the housing 140 is four, the number of corners is four, but is not limited thereto.

Each of the side parts 141-1 to 141-4 of the housing 140 may be disposed in parallel with a corresponding one of the side plates of the cover member 300.

The horizontal length of each of the sides 141-1 to 141-4 of the housing 140 may be greater than the horizontal length of each of the corners 142-1 to 142-4, but is not limited thereto. .

The first side portion 141-2 and the second side portion 141-2 of the housing 140 may be located opposite to each other, and the third side portion 141-3 and the fourth side portion 141-4 are mutually opposite. It can be located on the other side. Each of the third side portion 141-3 and the fourth side portion 141-4 of the housing 140 may be positioned between the first side portion 141-2 and the second side portion 141-2.

In order to prevent direct collision with the inner surface of the upper plate of the cover member 300, the housing 140 may be provided with a stopper 144 on the upper, upper, or upper surface.

For example, a stopper 144 may be provided on an upper surface (eg, the first surface 51a) of each of the corners 142-1 to 142-4 of the housing 140, but is not limited thereto.

In addition, the upper, upper, or upper surfaces of the corner parts 142-1 to 142-4 of the housing 140 may include a guide protrusion 146 for guiding the damper applied to the support member 220.

At least one first coupling part coupled to the first outer frame 152 of the upper elastic member 150 may be provided on the upper, upper, or upper surface of the housing 140. In addition, at least one second coupling part which is coupled to and fixed to the second outer frame 162 of the lower elastic member 160 may be provided on the lower, lower, or lower surface of the housing 140.

Each of the first coupling portion and the second coupling portion of the housing 140 may be one of a plane, a groove, and a protrusion.

The first coupling portion of the housing 140 and the hole 152a of the first outer frame 152 of the upper elastic member 150 may be coupled using heat fusion or adhesive, and the second coupling of the housing 140 may be combined. The hole 162a of the second outer frame 162 of the upper and lower elastic members 160 may be coupled.

The housing 140 is provided on any one of the two side portions (eg, the first side portion 141-1) and the first seating portion 141a on which the first magnet 130-1 is disposed. ), And a second seating part 141b provided on the other one of the two sides 141-2 and on which the second magnet 130-2 is disposed.

In addition, the housing 140 may be provided on any one of the other two sides (eg, the third side 141-3) positioned opposite to each other, and the third seat for disposing the third magnet 130-3. A portion 141c and a fourth seating portion 141d provided at the other one of the other two sides 141-4 and for placing the dummy member 135 may be included.

Each of the first to third seating parts 141a to 141c of the housing 140 may be provided on an inner side of a corresponding one of the sides of the housing 140, but is not limited thereto. May be

Each of the first to third seating portions 141a to 141c of the housing 140 has a groove corresponding to or corresponding to any one of the first to third magnets 130-1 to 130-3. For example, it may be formed as a recess, but is not limited thereto.

For example, the first seating portion 141a (or the second seating portion 141b) of the housing 140 may have a first opening facing the first coil unit 120-1 (or the second coil unit). The second opening facing the third coil unit 230-1 (or the fourth coil unit 230-2) may be formed to facilitate the mounting of the magnet 130.

The third seating part 141c of the housing 140 may have a first opening facing the outer surface of the bobbin 110 and a second opening facing the fifth coil unit 230-3.

The fourth seating portion 141d of the housing 140 has a first opening that opens to the outer side of the fourth side portion 141-4 of the housing 140 and an agent that opens to the bottom surface of the fourth side of the housing 140. It may comprise two openings.

For example, one side of the magnets 130-1, 130-2, and 130-3 fixed or disposed on the seating portions 141a, 141b, and 141c of the housing 140 may be formed by the mounting portions 141a, 141b, and 141c. Can be exposed through the first opening. In addition, a lower surface of the magnets 130-1, 130-2, and 130-3 fixed or disposed on the seating parts 141a, 141b, and 141c of the housing 140 has a second opening of the seating parts 141a, 141b, and 141c. Can be exposed through

One side of the derby member 135 fixed or disposed on the seating portion 141d of the housing 140 may be exposed to the outer side surface of the fourth side portion 141-4 of the housing 140 through the first opening. The lower surface of the derby member 135 may be exposed through the second opening.

For example, the first to third magnets 130-1 to 130-3 and the dummy member 135 may be fixed to the mounting portions 141a to 141d by an adhesive.

Support members 220-1 to 220-4 may be disposed at corners 142-1 to 142-4 of the housing 140, and corners 142-1 to 142-4 of the housing 140. The hole 147 may be provided to form a path through which the support members 220-1 to 220-4 pass.

For example, the housing 140 may include a hole 147 penetrating the upper portions of the corner parts 142-1 to 142-4.

In another embodiment, the holes provided in the corner parts 142-1 to 142-4 of the housing 140 may have a structure recessed from an outer surface of the corner portion of the housing 140, and at least a part of the holes may be an outer surface of the corner portion. May be opened. The number of holes 147 of the housing 140 may be equal to the number of support members.

The housing 140 may include at least one stopper (not shown) protruding from the outer surfaces of the side portions 141-1 to 141-4, and the at least one stopper may include the housing 140 perpendicular to the optical axis direction. When moving in one direction, the collision with the cover member 300 can be prevented.

In order to prevent the lower surface of the housing 140 from colliding with the base 210 and / or the circuit board 250, the housing 140 may further include a stopper (not shown) protruding from the lower surface.

Not only to secure a path through which the support members 220-1 to 220-4 pass, but also to secure a space for filling the silicon, which may act as a damping function, the housing 140 may have corner portions 142-1 to 142. A groove 148 provided at a lower portion or a lower portion of -4) may be provided.

The fourth side portion 141-4 of the housing 140 includes a first groove 14a for accommodating the circuit board 190 and a second groove 14b for accommodating the first position sensor 170. Can be.

In order to facilitate mounting of the circuit board 190, the first groove 14a of the housing 140 may be open at an upper portion thereof, and may have a shape corresponding to or corresponding to that of the circuit board 190.

The second groove 14b may have an opening that is opened into the housing 130, and may have a structure in contact with or connected to the first groove 14a, but is not limited thereto. The second groove 14b may have a shape corresponding to or matching the shape of the first position sensor 170.

Next, the first magnet 130-1, the second magnet 130-2, and the third magnet 130-3 will be described.

The first magnet 130-1, the second magnet 130-2, and the third magnet 130-3 may be spaced apart from each other and disposed in the housing 140. For example, each of the first to third magnets 130-1 to 130-3 may be disposed between the bobbin 110 and the housing 140.

The first magnet 130-1, the second magnet 130-2, and the third magnet 130-3 may be disposed at the side of the housing 140.

The first magnet 130-1 and the second magnet 130-2 are two side parts 141-1 and 141 located opposite to each other among the side parts 141-1 to 141-4 of the housing 140. -2).

For example, the first magnet 130-1 may be disposed on the first side 141-1 of the housing 140, and the second magnet 130-2 faces the first side 141-1. The second side portion 141-2 of the housing 140 may be disposed. For example, the third magnet 130-3 may be disposed on the third side portion 141-3 of the housing 140.

Since the first and second coil units 120-1 and 120-2 for the AF driving are disposed at two opposite sides of the bobbin 110, the bobbin 110 and the third magnet 130- There is no coil unit for AF driving between 3).

In addition, a coil unit for AF driving is not disposed between the bobbin 110 and the dummy member 135.

In addition, since the third to fourth coil units 230-1 to 230-4 and the first to third magnets 130-1 to 130-3 correspond to each other for driving the OIS, the dummy member 135. The second coil 230 for driving the OIS is not disposed between the circuit board 250 and the circuit board 250.

For example, the first magnet 130-1 may include a first surface facing the first coil unit 120-1, and the first surface of the first magnet 130-1 may be an N pole and an S pole. It may include a first nonmagnetic partition 11c positioned between two polarities and two polarities of.

For example, the first magnet 130-1 may include a second surface facing the third coil unit 230-1, and the second surface of the first magnet 130-1 may be an N pole and an S pole. It can include two polarities of.

For example, the second magnet 130-2 may include a first surface facing the second coil unit 120-2, and the first surface of the second magnet 130-2 may be an N pole and an S pole. And a second nonmagnetic partition 12c positioned between two polarities and between the two polarities.

For example, the second magnet 130-2 may include a second surface facing the fourth coil unit 230-2, and the second surface of the second magnet 130-2 may be an N pole and an S pole. It can include two polarities of.

For example, the third magnet 130-3 may include a first surface facing the side of the bobbin 110 facing the side of the housing 140 in which the third magnet is disposed, and the third magnet 130-may be disposed on the third magnet 130-3. The first surface of 3) may include two polarities of the north pole and the south pole.

For example, the third magnet 130-3 may include a second surface facing the fifth coil unit 230-3, and the second surface of the third magnet 130-3 may be an N pole and an S pole. Two polarities of and a third nonmagnetic partition 13c positioned between the two polarities.

At the initial position of the AF movable portion, the first magnet 130-1 is perpendicular to the optical axis and is formed in a direction toward the first coil unit 120-1 (or the center of the first coil unit 120-1) on the optical axis. 1 may overlap with the coil unit 120-1.

At the initial position of the AF movable portion, the second magnets 130-2 are perpendicular to the optical axis and in the direction toward the second coil unit 120-2 (or the center of the second coil unit 120-2) at the optical axis. It may overlap with the two coil units 120-2.

At the initial position of the AF movable portion, the third magnet 130-3 is perpendicular to the optical axis and in a direction from the third side portion 141-3 of the housing 140 toward the fourth side portion 141-4. It does not face or overlap with the 120-1 and the second coil unit 120-2.

For example, each of the first to third magnets 130-1 to 130-3 may be disposed at a corresponding one of the first to third seating portions 141a to 141c of the housing 140.

The first magnet 130-1 is perpendicular to the optical axis and overlaps the second magnet 130-2 in the direction toward the second side 141-2 on the first side 141-1 of the housing 140. Can be.

The shape of each of the first to third magnets 130-1 to 130-3 may be seated or disposed on a corresponding one of the first to third sides 141-1 to 141-3 of the housing 140. It may be a polyhedron shape that is easy to be used. For example, each of the first to third magnets 130-1 to 130-3 may have a flat plate shape, but is not limited thereto.

Each of the first to third magnets 130-1 to 130-3 may be a four pole magnet including two N poles and two S poles. Here, the 4-pole magnet may be represented as a bipolar magnet. The first to third magnets 130-1 to 130-3 will be described later.

The dummy member 135 may be disposed on the fourth side portion 141-4 of the housing 140. The dummy member 135 may be a nonmagnetic material, but is not limited thereto. In another embodiment, the dummy member 135 may include a magnetic material.

The dummy member 135 may have the same mass as the third magnet 130-3, but is not limited thereto. The dummy member 135 may be disposed on the side portion 141-4 opposite to the side portion 141-3 of the housing 140 in which the third magnet 130-3 is disposed to balance the weight.

At the initial position of the AF movable portion, the dummy member 135 is perpendicular to the optical axis and in the direction toward the fourth side portion 141-4 from the third side portion 141-3 of the housing 140, to the first coil unit 120-. It does not face or overlap with 1) and the 2nd coil unit 120-2.

The dummy member 135 may be perpendicular to the optical axis and overlap the third magnet 130-3 in a direction from the third side portion 141-3 to the fourth side portion 141-4 of the housing 140.

In addition, the dummy member 135 may be at least partially overlapped with the position sensor 170 in a direction perpendicular to the optical axis and toward the fourth side portion 141-4 from the third side portion 141-3 of the housing 140. However, the present invention is not limited thereto, and in other embodiments, the two may not overlap each other.

When the dummy member 135 includes a magnetic material, the magnetic strength of the dummy member 135 may be smaller than that of the third magnet 130-3.

The dummy member 135 may include tungsten, and tungsten may occupy 95% or more of the total weight. For example, the dummy member 135 may be a tungsten alloy.

The dummy member 135 may have a polyhedron, for example, a rectangular parallelepiped shape, but is not limited thereto, and may be formed in various shapes. For example, the dummy member 135 may include rounded portions or curved surfaces at side edges.

Next, the circuit board 190 and the first position sensor 170 will be described.

The first position sensor 170 and the circuit board 190 are disposed on any one of the sides of the housing 140. For example, the first position sensor 170 and the circuit board 190 may be disposed on the fourth side portion 141-4 of the housing 140 in which the dummy member 135 is disposed.

For example, the circuit board 190 may be disposed in the first groove 14a of the housing 140, and the first position sensor 170 may be disposed or mounted on the circuit board 190.

At the initial position of the AF movable unit, the first position sensor 170 may be at least partially overlapped with the sensing magnet 180 in a direction perpendicular to the optical axis and toward the first position sensor 170 at the optical axis, but is not limited thereto. no.

The first position sensor 170 may be disposed on the first surface of the circuit board 190. The first surface of the circuit board 190 mounted on the housing 140 may be a surface facing the inside of the housing 140.

The first position sensor 170 may be implemented in the form of a driver integrated circuit (IC) including a hall sensor, or may be implemented by a position detection sensor such as a hall sensor alone.

When the first position sensor 170 is implemented as a hall sensor alone, the first position sensor 170 may include two input terminals and two output terminals, and the first position sensor 170 may be an input terminal. And each of the output terminals may be electrically connected to a corresponding one of the first to fourth pads of the circuit board 190.

For example, the circuit board 190 may be a printed circuit board, or an FPCB.

For example, the first to fourth terminals of the circuit board 190 may be electrically connected to a corresponding one of the upper springs 150-1 to 150-4, and the support members 220-1 to 220-4. ) May be electrically connected to the circuit board 250, and the first position sensor 170 may be electrically connected to the circuit board 250.

When the first position sensor 170 is a driver IC including a hall sensor, four terminals and a first coil for transmitting and receiving a clock signal SCL, a data signal SDA, a power signal VCC, and GND are provided. It may also include two terminals for providing a drive signal to 120.

Next, the upper elastic member 150, the lower elastic member 160, the support member 220, the second coil 230, the circuit board 250, and the base 210 will be described.

FIG. 6 is a plan view of the upper elastic member 150, FIG. 7 is a diagram for describing an electrical connection relationship between the upper elastic member 150, the first position sensor 170, and the support member 220, and FIG. 8. Is a bottom view of the lower elastic member 160 and the housing 140, and FIG. 9A illustrates an exploded perspective view of the second coil 230, the circuit board 250, and the base 210.

6 to 9A, the upper elastic member 150 may be coupled to the top, top, or top of the bobbin 110 and the top, top, or top of the housing 140. The lower elastic member 160 may be coupled to the bottom, bottom, or bottom of the bobbin 110 and the bottom, bottom, or bottom of the housing 140.

The upper elastic member 150 and the lower elastic member 160 may constitute an elastic member, the elastic member may be coupled to the bobbin and the housing, and the elastic member elastically supports the bobbin 110 with respect to the housing 140. can do.

The upper elastic member 150 may include a plurality of upper springs 150-1 to 150-4 that are electrically separated from each other. In FIG. 6, four upper springs are electrically separated, but the number of the upper springs is not limited thereto. In another embodiment, two upper springs may be two or more.

For example, the first upper spring 150-1 may be disposed on the first corner portion 142-1 and the fourth side portion 141-4 of the housing 140.

For example, the second upper spring 150-2 may be disposed on the fourth side portion 141-4 and the second corner portion 142-2 of the housing 140.

For example, the third upper spring 150-3 may be disposed on the second corner portion 142-2, the second side portion 141-2, and the third corner portion 142-3 of the housing 140. Can be.

For example, the fourth upper spring 150-4 may be disposed on the fourth corner portion 142-4, the first side portion 141-1, and the first corner portion 142-1 of the housing 140. Can be.

At least one of the first to fourth upper springs 150-1 to 150-4 may include a first inner frame 151 coupled with the bobbin 110 and a first outer frame 152 coupled with the housing 140. The apparatus may further include a first frame connector 153 connecting the first inner frame 151 and the first outer frame 152. In another embodiment, the inner frame may be expressed as "inner part" and the outer frame may be expressed as "outer part".

For example, each of the first and second upper springs 150-1 and 150-2 may include a first outer frame 152, may not include a first inner frame and a first frame connection, Each of the third and fourth upper springs 150-3 and 150-4 may include a first inner frame 151, a first outer frame 152, and a first frame connector 153, but It is not limited.

For example, the first inner frame 151 may be provided with a hole 151a for engaging with the first coupling portion of the bobbin 110. Also, for example, the first outer frame 152 may be provided with a hole 152a for engaging with the first coupling portion of the housing 140.

The first outer frame 152 of each of the first to fourth upper springs 150-1 to 150-4 may be a contact portion P1 to electrically connected to a corresponding one of the terminals of the circuit board 190. P4) can be provided.

The first outer frame 152 of each of the first to fourth upper springs 150-1 to 150-4 may include a first coupling part 510 and a housing coupled to the support members 220-1 to 220-4. The second coupling part 520 coupled to any one of the corner parts of the 140 may include a connection part 530 connecting the first coupling part 510 and the second coupling part 520.

For example, the connection part 530 may include a first connection part 530-1, a first connection part 510, and a second connection part that connect the first area of the first coupling part 510 and the second coupling part 520. A second connection part 530-2 connecting the second area of 520 may be included. The connection part 530 may include at least one bent part or a bent part.

The lower elastic member 160 may include two lower springs, but is not limited thereto. In another embodiment, the lower elastic member 160 may include one lower spring or three or more lower springs.

For example, each of the first and second lower springs 160-1 and 160-2 may be coupled to or fixed to the lower, lower, or lower portion of the bobbin 110. It may include a second outer frame 162 coupled or fixed to the lower, lower surface, or the bottom, and a second frame connecting portion 163 connecting the second inner frame 161 and the second outer frame 162 to each other. have.

Each of the first frame connecting portion 153 of the upper elastic member 150 and the second frame connecting portion 163 of the lower elastic member 160 are formed to be bent or curved (or curved) at least once to form a pattern of a predetermined shape. Can be formed. The position change and the micro deformation of the first and second frame connectors 153 and 163 may support the bobbin 110 to be elastically (or elastically) supported by the lifting and / or lowering in the first direction.

The second inner frame 161 may be provided with a hole 161a for engaging with the second coupling portion of the bobbin 110, and the second outer frame 162 may be coupled with the second coupling portion of the housing 140. A hole 162a may be provided.

The upper springs 150-1 to 150-4 and the lower springs 160-1 and 160-2 may be formed of leaf springs, but are not limited thereto and may be implemented as coil springs or the like.

In order to absorb and dampen the vibration of the bobbin 110, the lens driving device 100 may be disposed between the upper springs 150-1 to 150-4 and the bobbin 110 (or the housing 140). One damper (not shown) may be further provided.

For example, a first damper (not shown) may be disposed in a space between the first frame connecting portion 153 and the bobbin 110 of each of the upper springs 150-1 to 150-4.

Also, for example, the lens driving device 100 may further include a second damper (not shown) disposed between the second frame connecting portion 163 and the bobbin 110 (or the housing 140) of the lower elastic member 160. It may be.

In addition, for example, the lens driving apparatus 100 may further include a third damper (not shown) disposed between the support member 220 and the hole 147 of the housing 140.

In addition, for example, the lens driving apparatus 100 may further include a fourth damper (not shown) disposed at one end of the first coupling part 510 and the support member 220, and the other end of the support member 220 may be provided. It may further include a fifth damper (not shown) disposed on the circuit board 250.

For example, a damper (not shown) may be further disposed between the inner surface of the housing 140 and the outer circumferential surface of the bobbin 110.

Next, the supporting member 220 will be described.

The support member 220 may support the housing 140 so as to be movable in a direction perpendicular to the optical axis with respect to the base 210, and the support member 220 may include at least one of the upper and lower elastic members 150 and 160. The circuit board 250 may be electrically connected.

The support member 220 may include a plurality of support members 220-1 to 220-4.

For example, the first to fourth support members 220-1 to 220-4 may correspond to the corner parts 142-1 to 142-4 of the housing 140.

Each of the first to fourth support members 220-1 to 220-4 may be disposed at a corresponding one of the first to fourth corner portions 142-1 to 142-4 of the housing 140. The first to fourth upper springs 150-1 to 150-4 and the circuit board 250 may be connected to each other.

For example, each of the first to fourth support members 220-1 to 220-4 may include a corresponding one of the first to fourth upper springs 150-1 to 150-4 and the circuit board 250. A corresponding one of the terminals can be electrically connected.

The first to fourth support members 220-1 to 220-4 may be spaced apart from the housing 140, and are not fixed to the housing 140, but the first to fourth support members may be soldered or the like. One end of each of the first to second upper springs 150-1 to 150-4 may be directly connected to or coupled to the first coupling part 510 of any one of the first to fourth upper springs 150-1 to 150-4. have.

In addition, the other end of each of the first to fourth support members 220-1 to 220-4 may be directly connected to or coupled to the circuit board 250 through soldering. For example, the other end of each of the first to fourth support members 220-1 to 220-4 may be directly connected to or coupled to a bottom surface of the circuit board 250. In another embodiment, the other end of each of the support members 220-1 to 220-4 may be coupled to the circuit member 231 or the base 210 of the second coil 230.

For example, each of the first to fourth supporting members 220-1 to 220-4 passes through a hole 147 provided in a corresponding one of the corner portions 142-1 to 142-4 of the housing 140. It may be, but is not limited thereto. In other embodiments, the support members may be disposed adjacent to the boundary between the side portions 141-1 to 141-4 and the corner portions 142 of the housing 140, and the corner portions 142-1 of the housing 140 are provided. To 142-4).

The first coil 120 may be electrically connected to the lower elastic member 150.

When the first coil unit 120-1 and the second coil unit 120-2 are connected to each other, one end of the first coil unit 120-1 may be the first to fourth lower springs 160-1 to 160. -4) may be connected to or coupled to the second inner frame 161 of any one (eg, 160-2), and one end of the second coil unit 120-2 is connected to the first to fourth lower springs ( 160-1 to 160-4) may be connected to or coupled to the second inner frame 161 of any other (eg, 160-4). In this case, the two lower springs (eg, 160-2 and 160-4) connected to the first coil unit 120-1 and the second coil unit 120-2 are electrically connected to the terminals of the circuit board 250. One driving signal may be provided to the first coil unit 120-1 and the second coil unit 120-2 through the circuit board 250.

In another embodiment in which the first coil unit 120-1 and the second coil unit 120-2 are separated from each other, the first coil unit 120-1 may include the first to fourth lower springs 160-1. To 160-4) may be connected to or coupled to the second inner frames of any two (eg, 160-1 and 160-2), and the second coil unit 120-2 may be connected to the first to fourth lower portions. The other two of the springs (eg, 160-3, 160-4) may be connected or coupled to the second inner frames. In this case, the first to fourth lower springs 160-1 to 160-4 may be electrically connected to the circuit board 250. For example, the first to fourth lower springs 160-1 to 160-4 may be electrically connected to terminals of the circuit board 250, and the first coil unit 120 may be connected to the terminals of the circuit board 250. Separate driving signals (eg, driving currents) may be provided to each of -1) and the second coil unit 120-2.

The support member 220 may be implemented as a member that can be supported by elasticity, for example, a suspension wire, a leaf spring, a coil spring, or the like. In another embodiment, the support member 220 may be integrally formed with the upper elastic member 150.

Next, the base 210, the circuit board 250, and the second coil 230 will be described.

Referring to FIG. 9A, the base 210 is disposed below the bobbin 110 (or the housing 140).

The base 210 may have an opening corresponding to the opening of the bobbin 110, and / or the opening of the housing 140, and may have a shape coinciding with or corresponding to the cover member 300, for example, a quadrangular shape.

A supporting part 255 or a supporting part may be provided in an area of the base 210 facing the terminal 251 of the circuit board 250. The base 255 of the base 210 may support the terminal surface 253 of the circuit board 250 on which the terminal 251 is formed.

The base 210 may have a recess 212 in the corner region to avoid spatial interference with the other ends of the support members 220-1 to 220-4 coupled to the circuit board 250.

In addition, an upper surface around the opening of the base 210 may be provided with a protrusion 19 for engaging the opening of the circuit board 250 and the opening of the circuit member 231.

In addition, a mounting portion (not shown) in which the filter 610 of the camera module 200 is installed may be formed on the bottom surface of the base 210.

The circuit board 250 may be disposed on an upper surface of the base 210 and may include an opening corresponding to an opening of the bobbin 110, an opening of the housing 140, and / or an opening of the base 210. The shape of the circuit board 250 may be a shape that corresponds to or corresponds to an upper surface of the base 210, for example, a rectangular shape.

The circuit board 250 may include a plurality of terminals 251 that are bent from an upper surface and receive electrical signals from the outside, or at least one terminal surface 253 provided with pins. For example, the circuit board 250 may include two terminal surfaces disposed on two sides of the upper surface facing each other, but is not limited thereto.

A driving signal may be provided to each of the first coil 120 and the second coil 230 through the plurality of terminals 251 provided on the terminal surface 253 of the circuit board 250. In addition, a driving signal may be provided to the first position sensor 170 through the terminals 251 of the circuit board 250, and may receive and output an output signal of the first position sensor 170.

The circuit board 250 may be provided as an FPCB, but is not limited thereto. The terminals of the circuit board 250 may be directly formed on the surface of the base 210 using a surface electrode method or the like.

The circuit board 250 may include a hole 250a through which the support members 220-1 to 220-4 pass to avoid spatial interference with the support members. The position and number of holes 250a may correspond to or coincide with the position and number of support members 220-1 through 220-4.

In other embodiments, the circuit board 250 may have an escape groove at a corner instead of the hole 250a.

For example, the supporting members 220-1 to 220-4 may be electrically connected to each other through a circuit pattern and solder disposed on the bottom surface of the circuit board 250 through the holes 250a of the circuit board 250. It is not limited to this.

In another embodiment, the circuit board 250 may not include a hole, and the support members 220-1 to 220-4 may be formed by soldering a circuit pattern or a pad formed on an upper surface of the circuit board 250. It may be electrically connected.

Alternatively, in other embodiments, the support members 220-1 to 220-4 may be electrically connected to the circuit member 231, and the circuit member 231 may be connected to the support members 220-1 to 220-4. The substrate 250 may be electrically connected to the substrate 250.

The second coil 230 may be disposed below the bobbin 110 (or the housing) and may be disposed on the upper surface of the circuit board 250.

The second coil 230 is a third coil unit 230-1 corresponding to the first magnet 130-1 disposed in the housing 140, and a fourth coil unit corresponding to the second magnet 130-2. 230-2, and a fifth coil unit 230-3 corresponding to the third magnet 130-3.

For example, the third coil unit 230-1 may face or overlap the first magnet 130-1 in the optical axis direction, and the fourth coil unit 230-2 may have the second magnet 130-in the optical axis direction. The second coil unit 230-3 may face or overlap with the third magnet 130-3 in the optical axis direction.

Each of the third to fifth coil units 230-1 to 230-5 may have a closed curve having a central hole, for example, a ring shape, and the central hole may be formed to face an optical axis direction.

For example, the third coil unit 230-1 and the fourth coil unit 230-2 may be disposed to face each other in a direction from the first magnet 130-1 to the second magnet 130-2. .

Also, for example, each of the third coil unit 230-1 and the fourth coil unit 230-2 in the direction from the first magnet 130-1 to the second magnet 130-2 may be a fifth coil unit ( 230-3) may not overlap.

For example, the second coil 230 may further include a rectangular circuit member 231 in which the third to fifth coil units 230-1 to 230-3 are formed.

Here, the circuit member 231 may be represented by replacing with a “substrate”, and the substrate 231 may include a second coil 230. Also, for example, the first coil unit 120-1 may be represented by replacing the first coil, the second coil unit 120-2 may be represented by replacing the second coil, and the second coil 230. ) May be represented by a third coil, and the substrate 231 may include a third coil.

For example, the circuit member 231 may include four sides, and each of the third to fifth coil units 230-1 to 230-3 may correspond to any one of three sides of the circuit member 231. The coil unit may not be disposed on the other side of the circuit member 231.

For example, each of the third coil unit 230-1 and the fourth coil unit 230-2 may be disposed to be parallel to a corresponding one of the first and second sides facing each other of the circuit member 231. The fifth coil unit 230-3 may be disposed to be parallel to the third side or the fourth side of the circuit member 231.

In order to avoid spatial interference with the supporting members 220-1 to 220-4, a hole 230a may be provided at an edge of the circuit member 231, and the supporting members 220-1 to 220-4 may be provided. The silver may pass through the hole 230a of the circuit member 231. In another embodiment, the circuit member may have a groove provided in an edge of the circuit member instead of a hole in order to avoid spatial interference with the supporting members.

The third to fifth coil units 230-1 to 230-3 may be electrically connected to the circuit board 250. For example, the third to fifth coil units 230-1 to 230-3 may be electrically connected to terminals of the circuit board 250.

The circuit board 250 may include bonding portions or pads for being electrically connected to the third to fifth coil units 230-1 to 230-3.

In FIG. 9A, the third to fifth coil units 230-1 to 230-3 may be formed on a circuit member 231 separate from the circuit board 250, but embodiments of the present disclosure are not limited thereto. The third to fifth coil units 230-1 to 230-3 may be implemented in the form of ring-shaped coil blocks or in the form of an FP coil. In another embodiment, the third to fifth coil units may be implemented in the form of a circuit pattern formed on the circuit board 250.

The circuit board 250 and the circuit member 231 are separately represented in separate configurations, but are not limited thereto. In other embodiments, the circuit board 250 and the circuit member 231 may be bundled together to form a “circuit member”. It can also be expressed in the term. In this case, the other end of the support members may be coupled to the "circuit member (eg, bottom surface of the circuit member)".

9B illustrates an arrangement of the second position sensor 240 for OIS feedback driving.

Referring to FIG. 9B, the lens driving apparatus 100 may further include a second position sensor 240 for driving OIS feedback. The second position sensor 240 may include a first sensor 240a and a second sensor 240b.

Each of the first sensor 240a and the second sensor 240b may be a hall sensor, and any sensor may be used as long as it can detect the magnetic field strength. For example, each of the first and second sensors 240a and 240b may be implemented in the form of a driver including a Hall sensor, or may be implemented by a position detection sensor such as a hall sensor alone.

In addition, mounting grooves 215-1 and 215-2 for disposing the first and second sensors 240a and 240b may be provided on the upper surface of the base 210.

The first sensor 240a may be disposed to face or overlap one of the first magnet 130-1 and the second magnet 130-2 in the optical axis direction.

The second sensor 240b may be disposed to face or overlap the third magnet 130-3 in the optical axis direction.

The first sensor 240a and the second sensor 240b may be electrically connected to terminals of the circuit board 250. For example, a driving signal may be provided to each of the first sensor 240a and the second sensor 240b through the terminals of the circuit board 250, and the driving signal may be provided through the terminals of the circuit board 250. The first output and the second output of the second sensor 240b may be output.

The controller 830 of the camera module 200 or the controller 780 of the portable terminal 200A uses the first output of the first sensor 240a and the second output of the second sensor 240b to displace the OIS movable part. Can be detected or detected.

For example, the first sensor 240a and the second sensor 240b may be disposed or mounted on the bottom surface of the circuit board 250, and may be disposed in the mounting grooves 215-1, 215-2 of the base 210. It is not limited to this.

The first sensor 240a and the second sensor 240b may detect the displacement of the OIS movable part in a direction perpendicular to the optical axis OA. Here, the OIS moving part may include an AF moving part and components mounted to the housing 140.

For example, the "OIS movable part" may include the AF moving part and the housing 140, and according to the embodiment, the first to third magnets 130-1 to 130-3, the dummy member 135, and the circuit board ( 190, and the first position sensor 170 may be further included.

The interaction between the first to third magnets 130-1 to 130-3 and the third to fifth coil units 230-1 to 230-5 causes the OIS movable part (eg, the housing 140) to move. It may move in a direction perpendicular to the optical axis, for example, in the x-axis and / or y-axis directions, whereby image stabilization may be performed.

Next, the cover member 300 will be described.

The cover member 300 includes an OIS movable part, an upper elastic member 150, a lower elastic member 160, a second coil 230, a base 210, and a circuit board 250 in an accommodation space formed together with the base 210. ), The support member 220, and the second position sensor 240 may be accommodated.

The cover member 300 may be open in a lower portion, and may have a box shape including a top plate and side plates, and a lower portion of the cover member 300 may be coupled to an upper portion of the base 210. The shape of the top plate of the cover member 300 may be polygonal, for example, square or octagonal.

The cover member 300 may include an opening on the upper plate that exposes a lens (not shown) coupled to the bobbin 110 to external light. The material of the cover member 300 may be a nonmagnetic material such as SUS to prevent sticking with the magnet 130. The cover member 300 may be formed of a metal plate, but is not limited thereto, and may be formed of plastic. In addition, the cover member 300 may be connected to the ground of the second holder 800 of the camera module 200. The cover member 300 may block electromagnetic interference (EMI).

10A is a cross-sectional view of the lens driving device 100 in the AB direction of FIG. 3, FIG. 10B is a cross-sectional view of the lens driving device 100 in the CD direction of FIG. 3, and FIG. 10C is a cross-sectional view of the lens driving device 100 in the EF direction of FIG. 10D is a cross-sectional view of the lens driving device 100, FIG. 10D is a cross-sectional view of the lens driving device 100 in the GH direction of FIG. 3, and FIG. 11 is the first to third magnets 130-1 to 130-3, 12 illustrates a perspective view of the dummy member 135 and the third to fifth coil units 230-1 to 230-5, and FIG. 12 shows the components 130-1, 130-3, and 230-shown in FIG. 11. 1, 230-5, 135 are side views, and FIG. 13 is a plan view of the components 130-1, 130-3, 230-1, 230-5, 135 shown in FIG. 11.

10A to 13, the first magnet 130-1 may include a first magnet part 11a, a second magnet part 11b, and a first magnet part 11a and a second magnet part 11b. It may include a first nonmagnetic partition 11c disposed therebetween. Here, the first nonmagnetic partition 11c may be represented by replacing the “first partition”.

For example, the first magnet part 11a and the second magnet part 11b may be spaced apart from each other in the optical axis direction, and the first partition wall 11c may be disposed between the first magnet part 11a and the second magnet part 11b. It can be located at

The first magnet part 11a may include an N pole, an S pole, and a first interface 21a between the N pole and the S pole. The first boundary surface 21a may include a section having substantially no polarity as a portion having substantially no magnetism, and may be a portion that is naturally generated to form a magnet including one N pole and one S pole. .

The second magnet part 11b may include an N pole, an S pole, and a second interface 21b between the N pole and the S pole. The second boundary surface 21b may be a portion having substantially no polarity and may include a region having almost no polarity, and may be a portion naturally generated to form a magnet including one N pole and one S pole. .

The first nonmagnetic partition 11c separates or isolates the first magnet part 11a and the second magnet part 11b, and may be a part having substantially no magnetic properties and having almost no polarity. For example, the first nonmagnetic partition 11c may be a nonmagnetic material, air, or the like. The nonmagnetic bulkhead may be expressed as a "neutral zone" or "neutral zone".

The first nonmagnetic partition 11c is a part formed artificially when the first magnet part 11a and the second magnet part 11b are magnetized. The width W11 of the first nonmagnetic partition 11c is It may be larger than the width of each of the first boundary surface 21a and the second boundary surface 21b.

The width W11 of the first nonmagnetic partition 11c may be the length of the nonmagnetic partition 11c in the direction from the first magnet portion 11a to the second magnet portion 11b. Alternatively, the width W11 of the first nonmagnetic partition 11c may be the length of the first nonmagnetic partition 11c in the optical axis direction.

For example, the width W11 of the first nonmagnetic partition 11c may be 0.2 [mm] to 0.5 [mm]. Alternatively, the width W11 of the first nonmagnetic partition 11c may be 0.3 [mm] to 0.4 [mm].

The first magnet part 11a and the second magnet part 11b may be arranged to face opposite polarities in the optical axis direction.

For example, the N pole of the first magnet part 11a and the S pole of the second magnet part 11b may be disposed to face the first coil unit 120-1, but the present invention is not limited thereto and vice versa. Can be.

The second magnet 130-2 is a second nonmagnetic partition wall disposed between the third magnet part 12a, the fourth magnet part 12b, and the third magnet part 12a and the fourth magnet part 12b. (12c). Here, the second nonmagnetic partition 12c may be represented by replacing the “second partition”.

For example, the third magnet part 12a and the fourth magnet part 12b may be spaced apart from each other in the optical axis direction, and the second partition 12c may be disposed between the third magnet part 12a and the fourth magnet part 12b. It can be located at

Each of the third magnet part 12a and the fourth magnet part 12b may include an interface between the N pole, the S pole, and the N pole and the S pole.

Descriptions of the boundary surfaces 21a and 21b of the first and second magnet parts 11a and 11b may be applied to the interface between each of the third magnet part 12a and the fourth magnet part 12b.

The above description of the first nonmagnetic partition 11c may be applied to the second nonmagnetic partition 12c.

Each of the first nonmagnetic partition 11c and the second nonmagnetic partition 12c may extend in a horizontal direction or a direction perpendicular to the optical axis.

The first magnet portion 11a, the first nonmagnetic partition 11c, and the second magnet portion 11b may be sequentially disposed in the optical axis direction. The third magnet part 12a, the second nonmagnetic partition wall 12c, and the fourth magnet part 12b may be sequentially disposed in the optical axis direction.

For example, the first magnet part 11a may be disposed on the first nonmagnetic partition 11c, and the second magnet part 11b may be disposed below the first nonmagnetic partition 11c. In addition, the third magnet part 12a may be disposed on the second nonmagnetic partition 12c, and the fourth magnet part 12b may be disposed below the second nonmagnetic partition 12c.

For example, each of the first nonmagnetic bulkhead 11c and the second nonmagnetic bulkhead 12c may be parallel to a straight line perpendicular to the optical axis, and each of the boundary surfaces 21a and 11b of the first and second magnet parts 11a and 11b may be parallel to each other. 21b) may be parallel to the optical axis.

For example, each of the first magnet 130-1 and the second magnet 130-2 may have an N pole and an S pole of the anode magnet in the optical axis direction.

The third magnet 130-3 is a third nonmagnetic partition wall disposed between the fifth magnet part 13a, the sixth magnet part 13b, and the fifth magnet part 13a and the sixth magnet part 13b. (13c) may be included. Here, the third nonmagnetic bulkhead may be represented by replacing the “third bulkhead”.

The fifth magnet part 13a and the sixth magnet part 13b may be spaced apart from each other in a direction perpendicular to the optical axis direction, and the third partition wall 13c may include the fifth magnet part 13a and the sixth magnet part 13b. It can be located in between.

The fifth magnet part 13a may include an N pole, an S pole, and a first interface 22a between the N pole and the S pole. The first interface 22a may be a portion having substantially no polarity and may include a section having almost no polarity, and may be a portion that is naturally generated to form a magnet including one N pole and one S pole. .

The sixth magnet part 13b may include an N pole, an S pole, and a second interface 22b between the N pole and the S pole. The second boundary surface 22b may be a portion having substantially no polarity and may include a portion having almost no polarity, and may be a portion naturally occurring to form a magnet including one N pole and one S pole. .

The third nonmagnetic partition 13c separates or isolates the fifth magnet part 13a and the sixth magnet part 13b, and may be a part having substantially no magnetic properties and having almost no polarity. For example, the third nonmagnetic partition 13c may be a nonmagnetic material, air, or the like.

The third nonmagnetic bulkhead 13c is artificially formed when the fifth magnet part 13a and the sixth magnet part 13b are magnetized, and the width W12 of the third nonmagnetic bulkhead 13c is The width of each of the first boundary surface 22a and the second boundary surface 22a may be greater.

The width W12 of the third nonmagnetic partition 13c may be the length of the third nonmagnetic partition 13c in a direction from the fifth magnet portion 13a to the sixth magnet portion 13b.

For example, the width W12 of the third nonmagnetic partition wall 13c may be 0.2 [mm] to 0.5 [mm]. Alternatively, the width W12 of the nonmagnetic partition wall 13c may be 0.3 [mm] to 0.4 [mm].

The fifth magnet part 13a and the sixth magnet part 13b may be disposed to face the opposite polarities in a direction perpendicular to the optical axis OA and toward the third magnet 130-3 at the optical axis OA. .

For example, the north pole and the south pole of the sixth magnet part 13b may be disposed to face the outer surface of the bobbin 110 corresponding to the third side surface 141-3 of the housing 140, but is not limited thereto. It is not intended to be reversed.

The third nonmagnetic partition wall 13c may extend in the optical axis direction or the vertical direction.

The fifth magnet part 13a, the third nonmagnetic bulkhead 13c, and the sixth magnet part 13b are perpendicular to the optical axis OA and in a direction from the third magnet 130-3 toward the optical axis OA. May be arranged sequentially.

For example, the fifth magnet part 13a may be disposed on the left side (or the right side) of the third nonmagnetic partition wall 13c, and the sixth magnet part 13b may be disposed on the right side (or left side) of the third nonmagnetic partition wall 13c. ) May be arranged.

For example, the third nonmagnetic partition wall 13c may be parallel to the optical axis, and the boundary surfaces 22a and 22b of each of the fifth and sixth magnet parts 13a and 13b may be parallel to the direction perpendicular to the optical axis.

The first magnet 130 may be located inside the region of the third coil unit 230-1 and may overlap the third coil unit 230-1 in the optical axis direction.

The second magnets 130 may be located inside the region of the fourth coil unit 230-2 and may overlap the fourth coil unit 230-2 in the optical axis direction.

The third magnet 130 may be located inside the region of the fifth coil unit 230-3 and may overlap the fifth coil unit 230-3 in the optical axis direction.

The separation or isolation direction of the third nonmagnetic partitions 13c may be perpendicular to the separation or isolation direction of each of the first and second nonmagnetic partitions 11c and 12c.

For example, each of the first and second nonmagnetic partitions 11c and 12c isolates or separates the two magnet portions 11a and 11b, 12a and 12b from each other in the optical axis direction, while the third nonmagnetic partitions 13c are separated from each other. ) May isolate or separate the two magnet parts 13a and 13b in a direction perpendicular to the optical axis and toward the third magnet 130-3 at the optical axis OA.

One portion of the third coil unit 230-1 is the first polar portion of the first magnet portion 11a, the first nonmagnetic partition 11c, and the second portion of the second magnet portion 11b in the optical axis direction. It can overlap with the polar portion. The first polar portion may be an N pole or an S pole, and the second polar portion may be an opposite polar portion of the first polarity.

One portion of the fourth coil unit 230-2 is the first polar portion of the third magnet portion 12a, the second nonmagnetic partition 12c, and the second portion of the fourth magnet portion 12b in the optical axis direction. It can overlap with the polar portion.

One portion of the fifth coil unit 230-3 may overlap the N pole and the S pole of the fifth magnet part 13a in the optical axis direction. Alternatively, any other part of the fifth coil unit 230-3 may overlap the N pole and the S pole of the sixth magnet part 13b in the optical axis direction.

The first magnet 130-1 and the second magnet 130-2 may have the same length, width, and height, but are not limited thereto.

In addition, the length, width, and height of the third coil unit 230-1 and the fourth coil unit 230-2 may be identical to each other, but are not limited thereto.

11 and 12, the lengths L1, L2, L3, widths W1, W2, and W3 of the first magnet 130-1, the third magnet 130-3, the dummy member 135, And heights H1, H2 and H3. The lengths M1 and M2, the width K1. K2, and the height (length in the optical axis direction) of the third to fifth coil units 230-1 to 230-3 are also described.

Here, the lengths L1 and L2 of each of the first to third magnets 130-1 to 130-3 may be lengths in their respective longitudinal directions, and the length L3 of the dummy member 135 may be a dummy member. It may be a length in the longitudinal direction of the (135).

In addition, the widths W1 and W2 of each of the first to third magnets 130-1 to 130-3 may be lengths in their respective width directions, and the width W3 of the dummy member 135 may be a dummy member. It may be a length in the width direction of the 135. The width direction may be perpendicular to the length direction, and may be a direction having a shorter length in each of the components 130-1 to 130-3 and 135. In addition, the widths of the components 130-1 to 130-3 and 135 may be expressed by replacing the "thickness" of the components 130-1 to 130-3 and 135.

For example, the lengths L1 and L2 of the first to third magnets 130-1 to 130-3 may respectively correspond to the first to third magnets 130-1 to 130-3 facing the bobbin 110. It may be a length in the horizontal direction of the first surface of the. In addition, the length L3 of the dummy member 135 may be a length in the horizontal direction of the first surface of the dummy member 135 facing the bobbin 110.

Also, for example, the first to third magnets 130-1 to 130-3, and the widths L1, L2, and L3 of the dummy member 135 may be configured to face the bobbin 110. 130-3 and 135 may be a distance from the first surface to the second surface opposite to the first surface.

Also, for example, the heights H1, H2, and H3 of the first to third magnets 130-1 to 130-3 and the dummy member 135 may be lengths in the optical axis direction of each configuration. Alternatively, for example, the heights H1, H2, and H3 may be lengths in the longitudinal direction of the first surfaces of the components 130-1 to 130-3 and 135 facing the bobbin 110. Alternatively, for example, the heights H1, H2, H3 may be the distance from the lower surface to the upper surface of each configuration.

The lengths M1 and M2 of each of the third to fourth coil units 230-1 to 230-3 may be parallel to or in the longitudinal direction of a corresponding one of the first to third magnets 130-1. It may be a length in the direction.

In addition, the widths K1 and K2 of each of the third to fourth coil units 230-1 to 230-3 may be in the width direction of or parallel to the corresponding one of the first to third magnets 130-1. It may be a length in one direction. The height of each of the third to fourth coil units 230-1 to 230-3 may be a length in the optical axis direction, and the heights of the third to fourth coil units 230-1 to 230-3 may be different from each other. Although not limited thereto, at least one of the heights of the third to fourth coil units 230-1 to 230-3 may be different from the rest.

The length L1 of the length direction of the first magnet 130-1 may be smaller than the length M1 of the length direction of the third coil unit 230-1 (L1 <M1).

The length W1 of the width direction of the first magnet 130-1 may be smaller than the length K1 of the width direction of the third coil unit 230-1 (W1 <K1).

In addition, the length of the second magnet 130-2 in the longitudinal direction may be smaller than the length of the fourth coil unit 230-2 in the longitudinal direction. The length in the width direction of the second magnets 130-2 may be smaller than the length in the width direction of the fourth coil unit 230-2.

The length L2 in the longitudinal direction of the third magnets 130-3 may be smaller than the length M2 in the longitudinal direction of the fifth coil unit 230-3 (L2 <M2). The length W2 in the width direction of the third magnet 130-3 may be smaller than the length K2 in the width direction of the fifth coil unit 230-3 (W2 <K2). In another embodiment, W2 and K2 may be the same.

The length M2 of the length direction of the fifth coil unit 230-3 is the length M1 of the length direction of the third coil unit 230-1 and / or the length direction of the fourth coil unit 230-2. It may be longer than the length of M2> M1.

The length L2 in the longitudinal direction of the third magnets 130-3 is greater than the length L1 in the longitudinal direction of the first magnets 130-1 and / or the length in the longitudinal direction of the second magnets 130-2. Can be large (L2> L1).

Since M2> M1 and L2> L1, the first electromagnetic force generated by the fifth coil unit 230-3 and the third magnet 130-3 is applied to the third coil unit 230-1 and the first magnet ( The second electromagnetic force generated by 130-1) and the third electromagnetic force generated by the fourth coil unit 230-2 and the second magnet 130-2 may be greater than each. As a result, the embodiment can reduce the difference between the sum of the first electromagnetic force in the X-axis direction and the second and third electromagnetic forces in the Y-axis direction, and can improve the reliability of the OIS operation.

In another embodiment, M2 may be M1, and L2 may be L1.

For example, L1: L2 = 1: 1 to 1: 1.5. Or for example L1: L2 = 1: 1.2 to 1: 1.4.

In addition, the length K2 in the width direction of the fifth coil unit 230-3 is the length K1 in the width direction of the third coil unit 230-1 and / or the width of the fourth coil unit 230-2. It may be larger than the length of the direction (K2> K1), but is not limited thereto. In another embodiment, both may be the same.

The length W2 in the width direction of the third magnet 130-3 is greater than the length W1 in the width direction of the first magnet 130-1 and / or the length in the width direction of the second magnet 130-2. Although it may be large (W2> W1), the present invention is not limited thereto, and in other embodiments, both may be the same.

For example, W1 may be a length in a direction perpendicular to one surface of the optical axis and the first magnet 130-1 (or the second magnet 130-2), and W2 is the optical axis and the third magnet 130-3. It may be a length in a direction perpendicular to one surface of the.

Since W2> W1, the embodiment can reduce the difference between the sum of the first electromagnetic force in the X-axis direction and the second and third electromagnetic forces in the Y-axis direction, and can improve the reliability of the OIS operation.

The height H2 of the third magnet 130-3 may be smaller than the height H1 of the first magnet 130-1 and / or the height of the second magnet 130-2 (H2 <H1). . Here, H1 and H2 may be the lengths of the magnets 130-1 to 130-3 in the optical axis direction. Alternatively, H1 may be a distance from the bottom surface of the first magnet 130-1 (or the second magnet 130-2 to the top surface), and H2 is the distance from the bottom surface of the third magnet 130-3 to the top surface. It may be.

That is, the length of the third magnet 130-3 in the optical axis direction may be shorter than the length of the first magnet 130-1 in the optical axis direction and / or the length of the second magnet 130-2 in the optical axis direction. have.

For example, the length of the first magnet 130-1 in the optical axis direction and the length of the second magnet 130-2 in the optical axis direction may be the same.

As shown in FIG. 14, according to the direction of the magnetic force line of the third magnet 130-3, even if the height H 2 of the third magnet 130-3 decreases (eg, H 2 <H 1), the third magnet ( The magnetic flux provided to the fifth coil unit 230-3 from the 130-3 is not greatly reduced, and as a result, the magnetic force generated by the third magnet 130-3 and the fifth coil unit 230-3 is reduced. The amount of reduction is small enough not to significantly affect OIS operation.

Since H2 < H1, the embodiment can reduce the weight of the lens driving device, thereby reducing power consumption for AF driving and / or OIS driving.

In another embodiment, H2 may be equal to H1.

For example, an upper surface of the third magnet 130-3 is higher than or equal to a boundary between the second magnet part 11b of the first magnet 130-1 and the first nonmagnetic partition wall 11c. It may have a height lower than or equal to the upper surface of the magnet portion 11a.

It may also be, for example, H2: H1 = 0.3: 1 to 1: 1.

When H2 / H1 is less than 0.3, the first electromagnetic force generated by the fifth coil unit 230-3 and the third magnet 130-3 is reduced too much, so that the electromagnetic force in the X-axis direction and the electromagnetic force in the Y-axis direction are reduced. The difference can increase, which can result in poor reliability of OIS operation.

When H2 / 1 is greater than 1, the first electromagnetic force in the X-axis direction is increased, thereby increasing the difference between the electromagnetic force in the X-axis direction and the electromagnetic force in the Y-axis direction, thereby deteriorating reliability of OIS driving.

Or for example, H 2: H 1 = 0.5: 1 to 0.8: 1.

Referring to FIG. 14, each of the third to fifth coil units 230-1 to 230-3 may have a ring shape having a hole open toward the optical axis direction.

The length R1 of the hole of the fifth coil unit 230-3 in the direction perpendicular to the length direction of the fifth coil unit 230-3 is a direction perpendicular to the length direction of the third coil unit 230-1. It may be smaller than the length (R2) of the hole of the third coil unit (230-1) to (R1 <R2). In addition, R1 may be smaller than the length of the hole of the fourth coil unit 230-2 in the direction perpendicular to the length direction of the fourth coil unit 230-2.

This is because the magnetization directions of the first magnet 130-1 and the third magnet 130-3 are different from each other, so that the distribution of the magnetic field lines of the two magnets is also different from each other. By considering the distribution of the lines of magnetic force such that R2> R1, the electromagnetic force between the first magnet 130-1 and the third coil unit 230-1, the second magnet 130-2 and the fourth coil unit 230 The electromagnetic force between -2) and the electromagnetic force between the third magnet 130-3 and the fifth coil unit 230-3 may be improved.

The length L3 in the longitudinal direction of the dummy member 135 may be smaller than the length L2 in the longitudinal direction of the third magnet 130-3 (L3 <L2), and the length in the width direction of the dummy member 135. W3 may be smaller than the length W2 in the width direction of the third magnets 130-3 (W3 <W2).

Since W3 < W2, the embodiment can secure enough space to place the circuit board 190 and the first position sensor 170, and the circuit board 190 and the first position sensor 170 and the dummy. Spatial interference between the members 135 can be prevented.

In another embodiment, W3 = W2.

Also, the first separation distance in the optical axis direction between the first magnet 130-1 and the third coil unit 230-1, and the optical axis direction between the second magnet 130-2 and the fourth coil unit 230-2. The second separation distance, and the third separation distance in the optical axis direction between the third magnet 130-3 and the fifth coil unit 230-3 may be the same, but are not limited thereto.

In another embodiment, the third separation distance may be smaller than the first separation distance and / or the second separation distance. Since the third separation distance is smaller than the first separation distance and / or the second separation distance, the electromagnetic force generated in the X-axis direction and the Y-axis in other embodiments are compared with the case where all of the first to third separation distances are the same. The difference in electromagnetic force generated in the direction can be further reduced.

The height H3 of the dummy member 135 may be greater than or equal to the height H2 of the third magnet 130-3, but is not limited thereto. In another embodiment, the height H3 of the dummy member 135 may be smaller than the height H2 of the third magnet 130-3.

Referring to FIG. 10A, for example, the height of the upper surface of the dummy member 135 disposed in the housing 140 may be lower than the height of the upper surface of the position sensor 170 and may be higher than the height of the lower surface of the position sensor 170. have. Alternatively, the height of the upper surface of the dummy member 135 may be lower than or equal to the height of the lower surface of the position sensor 170.

For example, in the initial position of the bobbin 110, the height of the upper surface of the dummy member 135 disposed in the housing 140 may be lower than the height of the upper surface of the sensing magnet 180, the height of the lower surface of the sensing magnet 180 Can be higher. Alternatively, in the initial position of the bobbin 110, the height of the upper surface of the dummy member 135 may be lower than or equal to the height of the lower surface of the sensing magnet 180.

For example, the height of the upper surface of the dummy member 135 may be higher than or equal to the height of the upper surface of the third magnet 130-3, but is not limited thereto. In another embodiment, the height of the top surface of the dummy member 135 may be lower than the top surface of the third magnet 130-3.

The height of the bottom surface of the dummy member 135 may be lower than the height of the bottom surface of the third magnet 130-3, but is not limited thereto. In another embodiment, the height of the bottom surface of the dummy member 135 may be higher than the height of the bottom surface of the third magnet 130-3.

Referring to FIG. 10C, for example, the height of the upper surface of the dummy member 135 may be lower than the height of the upper surface of the second magnet 130-2 (or the first magnet 130-1), and the second magnet 130 may be lower than that of the second magnet 130. -2) may be higher than the height of the bottom surface of the first magnet 130-1.

In addition, the height of the bottom surface of the dummy member 135 may be lower than the height of the bottom surface of the second magnet 130-2 (or the first magnet 130-1), but is not limited thereto. The height of the bottom surface of the 135 may be higher than the height of the bottom surface of the second magnet 130-2 (or the first magnet 130-1).

In an embodiment, in order to reduce magnetic field interference between magnets included in adjacent lens driving devices in a dual or more camera module, three magnets 130-1 to 130-3 and corresponding three OIS coil units are provided. Ones 230-1 to 230-3.

Two magnets 130-1 and 130-2 of the three magnets 130-1 to 130-3 interact with the first and second coil units 120-1 and 120-2. While performing the AF operation, the OIS operation in the Y-axis direction may be performed by interacting with the third and fourth coil units 230-1 and 230-4.

One of the three magnets 130-1 to 130-3 may perform only an OIS operation in the X-axis direction by interacting with the fifth coil unit 230-3. .

Each of the first to third magnets 130-1 to 130-3 is configured of all four pole magnets, so that the embodiment corresponds to any one of the third to fifth coil units 230-1 to 230-3. The electromagnetic force with one can be improved, thereby reducing the current consumption.

Since the dummy member 135 is disposed on the opposite side of the third magnet 130-3, the embodiment may prevent oscillation due to weight eccentricity during the OSI operation.

Each of the first and second magnets 130-1 and 130-2 has a magnetization direction in which two magnet parts 11a, 11b, 12a, and 12b are disposed in the vertical direction with respect to the nonmagnetic partitions 11c and 12c. Can have The first and second portions 3a and 3b of each of the first and second coil units 120-1 and 120-2 face each other with the two magnet portions 11a, 11b, 12a, and 12b. Can be deployed. This arrangement may improve the electromagnetic force between the first magnet 130-1 and the first coil unit 120-1 and the electromagnetic force between the second magnet 130-2 and the second coil unit 120-2. Therefore, the current consumption can be reduced.

In general, the electromagnetic force in the X-axis direction due to the interaction between one magnet and one coil unit is smaller than the electromagnetic force in the Y-axis direction due to the interaction by two magnets and two coil units. In addition, the difference between the electromagnetic force in the X-axis direction and the electromagnetic force in the Y-axis direction may cause a malfunction of the OIS drive.

Embodiments may be configured as follows to reduce the difference between the electromagnetic force generated in the X-axis direction and the electromagnetic force generated in the Y-axis direction.

The magnetization directions of the two magnet parts 13a and 13b of the third magnet 130-3 may be changed into magnetization directions of the two magnet parts 11a and 11b, 12a and 12b of the first and second magnets 130-1 and 130-2. ) Perpendicular to the magnetization direction.

For example, the third magnet 130 so that the third nonmagnetic partition wall 13c separating the two magnet portions 13a and 13b of the third magnet 130-3 is perpendicular to the fifth coil unit 230-3. -3) may be disposed on the fifth coil unit 230-3.

For example, the third magnet 130-3 may be disposed such that the third nonmagnetic partition wall 13c is parallel to the optical axis direction.

Alternatively, for example, the N pole of one of the two magnet parts 13a and 13b of the third magnet 130-3 and the other S pole of the third magnet 130-3 face the fifth coil unit 230-3 in the optical axis direction. The third magnet 130-3 may be disposed to be viewed.

On the other hand, the first magnet 130-1 may be disposed on the third coil unit 230-1 so that the first nonmagnetic partition wall 11c is parallel to the third coil unit 230-1. The second magnet 130-2 may be disposed on the fourth coil unit 230-2 so that the second nonmagnetic partition wall 12c is parallel to the fourth coil unit 230-2.

Also, for example, the first and second magnets 130-3 may be disposed to be parallel to the optical axis direction of each of the first nonmagnetic partition 11c and the second nonmagnetic partition 12c.

Alternatively, for example, both the north pole and the south pole of one of the two magnet parts 11a and 11b of the first magnet 130-1 may face the third coil unit 230-1 in the optical axis direction. The N and S poles of any one of the two magnet parts 12a and 12b of the second magnet 130-2 may face the fourth coil unit 230-2 in the optical axis direction. .

In addition, the number of turns of the coil in the fifth coil unit 230-3 (hereinafter referred to as “first wound count”) may be the number of turns of the coil in the third coil unit 230-1 (hereinafter referred to as “second wound times”) or / And a number of times of winding the coil in the fourth coil unit 230-2 (hereinafter referred to as “third winding number”), thereby reducing the difference between the electromagnetic force generated in the X-axis direction and the electromagnetic force generated in the Y-axis direction. Can be.

Also, for example, the number of times of the second winding and the number of times of the third winding may be the same, but is not limited thereto. In another embodiment, the first winding number and the second winding number (or the third winding number) may be the same.

In addition, the length L2 in the longitudinal direction of the third magnet 130-3 is the length L1 in the longitudinal direction of the first magnet 130-1 and / or the length in the longitudinal direction of the second magnet 130-2. The length M2 in the longitudinal direction of the fifth coil unit 230-3 is larger than the length M1 in the longitudinal direction of the third coil unit 230-1 and / or the fourth coil unit 230-2. Is greater than the length in the longitudinal direction, thereby reducing the difference between the electromagnetic force generated in the X-axis direction and the electromagnetic force generated in the Y-axis direction.

14 illustrates magnetic field lines of the third magnet 130-3 with respect to the fifth coil unit 230-3, and magnetic field lines of the first magnet 130-1 with respect to the third coil unit 230-1.

Since the arrangement of the second magnets 130-2 is the same or similar to that of the first magnets 130-1, the magnetic field lines of the second magnets 130-2 with respect to the fourth coil unit 230-2 are The magnetic force lines of the first magnet 130-1 with respect to the third coil unit 230-1 may be the same as or similar to each other.

Referring to FIG. 14, the first electromagnetic force generated by the magnetic force lines MF2 of the fifth coil unit 230-3 and the third magnet 130-3 may correspond to the third coil unit 230-1 and the first magnet. It may be greater than the second electromagnetic force generated by the magnetic field lines MF1 of 130-1.

In addition, the first electromagnetic force generated by the magnetic field lines MF2 of the fifth coil unit 230-3 and the third magnet 130-3 may correspond to the fourth coil unit 230-2 and the second magnet 130-2. It may be greater than the third electromagnetic force generated by the magnetic field lines MF1.

Since the first electromagnetic force is greater than the second and third electromagnetic forces, the sum of the second electromagnetic force and the third electromagnetic force can be designed to be almost similar to the first electromagnetic force, so that the embodiment can be designed in the X axis direction when driving the OIS. The difference between the electromagnetic force and the electromagnetic force in the Y-axis direction can be reduced.

FIG. 15 illustrates the Y-axis direction due to the interaction between the first and second magnets 130-1 and 130-2 and the third and fourth coil units 230-1 and 230-2 shown in FIG. 11. The simulation results of the electromagnetic force Fx in the X-axis direction due to the interaction between the electromagnetic force Fy and the third magnet 130-3 and the fifth coil unit 230-5 are shown. 15 also shows linearity in the X-axis direction and linearity in the Y-axis direction.

In FIG. 15, the resistance of each of the third to fifth coil units 230-1 to 230-3 is 6 ohms [Ω] to 8 ohms, and the first to third magnets 130-1 to 130-3. May be a magnet of N45H or N45SH to N50H or N50SH. The first to third magnets 130-1 to 130-3 in the simulation of FIG. 15 are magnets of N48H.

Referring to Figure 15, the ratio (Fx / Fy) of Fx and Fy is 0.88 ~ 1. In other words, it can be seen that the deviation between Fx and Fy is within 12%. According to the simulation result, the embodiment can reduce the difference between the electromagnetic force in the X-axis direction and the electromagnetic force in the Y-axis direction during OIS driving, and ensure the reliability of the OIS driving.

In addition, when the stroke in the X-axis direction and the stroke in the Y-axis direction are in the range of -150 [μm] to 150 [μm], the linearity in the X-axis direction and the linearity in the Y-axis direction are 10 [um] or less. , Good. The linearity in the X-axis direction may mean a deviation between the trend line of the stroke in the X-axis direction and the stroke in the X-axis direction. The linearity in the Y-axis direction may mean a deviation between the trend line of the stroke in the Y-axis direction and the stroke in the Y-axis direction. In the simulation, the trend line of the stroke in the X-axis direction is y = 0.0015x + 0.003, and the trend line of the stroke in the Y-axis direction is y = 0.0018x-7E-06. In addition, it is assumed that the stiffness of the upper elastic member 150 and the lower elastic member 160 is 70 [mN / mm}, and the weight of the lens mounted on the bobbin 110 is 150 [mg].

Meanwhile, the lens driving apparatus 100 according to the above-described embodiment may further include a lens or / and a lens barrel mounted to the bobbin 110. In addition, the lens driving apparatus 100 according to the embodiment may further include an image sensor. In addition, the lens driving apparatus 100 may further include a circuit board on which the image sensor is mounted. In addition, the lens driving apparatus 100 may further include a filter for filtering the light passing through the lens and providing the filtered light to the image sensor. In addition, the lens driving apparatus 100 may further include a motion sensor or a controller.

The lens driving apparatus 100 according to the above-described embodiment may be implemented in various fields, for example, a camera module or an optical device, or may be used in the camera module or the optical device.

For example, the lens driving apparatus 100 according to the embodiment forms an image of an object in a space using reflection, refraction, absorption, interference, diffraction, etc., which are characteristics of light, and aims to increase the visual power of the eye, It may be included in an optical instrument for the purpose of recording and reproducing the image by the lens, or for the purpose of optical measurement, image propagation or transmission. For example, the optical device according to the embodiment may include a portable terminal equipped with a smartphone and a camera.

16 is an exploded perspective view of the camera module 200 according to the embodiment.

Referring to FIG. 16, the camera module 200 includes a lens or lens barrel 400, a lens driving device 100, an adhesive member 612, a filter 610, a first holder 600, and a second holder 800. ), An image sensor 810, a motion sensor 820, a controller 830, and a connector 840.

The lens or lens barrel 400 may be mounted to the bobbin 110 of the lens driving apparatus 100.

The first holder 600 may be disposed below the base 210 of the lens driving apparatus 100. The filter 610 may be mounted on the first holder 600, and the first holder 600 may include a protrusion 500 on which the filter 610 is seated.

The adhesive member 612 may couple or attach the base 210 of the lens driving apparatus 100 to the first holder 600. The adhesive member 612 may serve to prevent foreign substances from flowing into the lens driving apparatus 100 in addition to the above-described adhesive role.

For example, the adhesive member 612 may be an epoxy, a thermosetting adhesive, an ultraviolet curable adhesive, or the like.

The filter 610 may serve to block light of a specific frequency band from light passing through the lens barrel 400 from entering the image sensor 810. The filter 610 may be an infrared cut filter, but is not limited thereto. In this case, the filter 610 may be disposed to be parallel to the x-y plane.

An opening may be formed in a portion of the first holder 600 in which the filter 610 is mounted so that light passing through the filter 610 may be incident on the image sensor 810.

The second holder 800 may be disposed under the first holder 600, and the image sensor 810 may be mounted on the second holder 600. The image sensor 810 is a portion at which light passing through the filter 610 is incident to form an image included in the light.

The second holder 800 may be provided with various circuits, elements, controllers, etc. to convert an image formed in the image sensor 810 into an electrical signal and transmit the converted image to an external device.

The second holder 800 may be mounted with an image sensor, a circuit pattern may be formed, and may be implemented as a circuit board to which various elements are coupled.

The image sensor 810 may receive an image included in light incident through the lens driving apparatus 100, and may convert the received image into an electrical signal.

The filter 610 and the image sensor 810 may be spaced apart from each other in a first direction.

The motion sensor 820 may be mounted on the second holder 800 and may be electrically connected to the controller 830 through a circuit pattern provided in the second holder 800.

The motion sensor 820 outputs rotational angular velocity information by the movement of the camera module 200. The motion sensor 820 may be implemented as a two-axis or three-axis gyro sensor or an angular velocity sensor.

The controller 830 is mounted or disposed on the second holder 800. The second holder 800 may be electrically connected to the lens driving apparatus 100. For example, the second holder 800 may be electrically connected to the circuit board 190 of the lens driving apparatus 100.

For example, a driving signal may be provided to the first position sensor 170 and the second position sensor 240 through the second holder 800, and the output signal of the first position sensor 170 and the second position sensor ( The output signal of 240 may be transmitted to the second holder 800. For example, the output signal of the first position sensor 170 and the output signal of the second position sensor 240 may be received by the controller 830.

The connector 840 is electrically connected to the second holder 800 and may have a port for electrically connecting to an external device.

17 is a perspective view of a camera module 1000 according to another exemplary embodiment.

Referring to FIG. 17, the camera module 1000 includes a first camera module 100-1 including a first lens driving device and a second camera module 100-2 including a second lens driving device. It may be a dual camera module.

Each of the first camera module 100-1 and the second camera module 100-2 may be any one of a camera module for auto focus (AF) or a camera module for optical image stabilizer (OIS).

The AF camera module is one capable of performing only the autofocus function, and the OIS camera module is capable of performing the autofocus function and the optical image stabilizer (OIS) function.

For example, the first lens driving device may be the embodiment 100 shown in FIG. 1, and the second lens driving device may be the embodiment shown in FIG. 1 or the lens driving device for AF.

The camera module 1000 may further include a circuit board 1100 for mounting the first camera module 100-1 and the second camera module 100-2. In FIG. 17, the first camera module 100-1 and the second camera module 100-2 are arranged side by side on one circuit board 1100, but embodiments are not limited thereto. In another embodiment, the circuit board 1100 may include a first circuit board and a second circuit board separated from each other, the first camera module 100-1 may be disposed on the first circuit board, and the second The camera module may be disposed on the second circuit board.

The circuit of the first camera module 100-1 is positioned such that the dummy member 135 of the first lens driving apparatus 100 of the first camera module 100-1 is positioned adjacent to the second camera module 100-2. By disposing on the substrate 1100, driving the first to third magnets 130-1 to 130-3 of the first camera module 100-1 and the second lens of the second camera module 100-2. It is possible to reduce the magnetic field reduction between the magnets included in the device, thereby securing the reliability of the AF driving and / or the OIS driving of each of the first camera module 100-1 and the second camera module 100-2. can do.

18 is a perspective view of a portable terminal 200A according to an embodiment, and FIG. 19 is a block diagram of the portable terminal 200A illustrated in FIG. 18.

18 and 19, the portable terminal 200A (hereinafter, referred to as a “terminal”) includes a body 850, a wireless communication unit 710, an A / V input unit 720, a sensing unit 740, and input / output. The output unit 750 may include a memory unit 760, an interface unit 770, a controller 780, and a power supply unit 790.

The body 850 illustrated in FIG. 18 has a bar shape, but is not limited thereto, and includes a slide type, a folder type, and a swing type in which two or more sub-bodies are relatively movable. It may have various structures, such as a swivel type.

The body 850 may include a case (casing, housing, cover, etc.) forming an appearance. For example, the body 850 may be divided into a front case 851 and a rear case 852. Various electronic components of the terminal may be built in a space formed between the front case 851 and the rear case 852.

The wireless communication unit 710 may include one or more modules that enable wireless communication between the terminal 200A and the wireless communication system or between the terminal 200A and the network in which the terminal 200A is located. For example, the wireless communication unit 710 may include a broadcast receiving module 711, a mobile communication module 712, a wireless internet module 713, a short range communication module 714, and a location information module 715. have.

The A / V input unit 720 is for inputting an audio signal or a video signal, and may include a camera 721 and a microphone 722.

The camera 721 may include camera modules 200 and 1000 according to the embodiment shown in FIG. 16 or 17.

The sensing unit 740 detects the current state of the terminal 200A such as the open / closed state of the terminal 200A, the position of the terminal 200A, the presence or absence of a user contact, the orientation of the terminal 200A, the acceleration / deceleration of the terminal 200A, and the like. Sensing may generate a sensing signal for controlling the operation of the terminal 200A. For example, when the terminal 200A is in the form of a slide phone, it may sense whether the slide phone is opened or closed. In addition, it is responsible for sensing functions related to whether the power supply unit 790 is supplied with power or whether the interface unit 770 is coupled to an external device.

The input / output unit 750 is for generating an input or output related to sight, hearing, or touch. The input / output unit 750 may generate input data for controlling the operation of the terminal 200A, and may also display information processed by the terminal 200A.

The input / output unit 750 may include a key pad unit 730, a display module 751, a sound output module 752, and a touch screen panel 753. The keypad 730 may generate input data by a keypad input.

The display module 751 may include a plurality of pixels whose color changes according to an electrical signal. For example, the display module 751 may be a liquid crystal display, a thin film transistor-liquid crystal display, an organic light-emitting diode, a flexible display, or a three-dimensional display. It may include at least one of a display (3D display).

The sound output module 752 may output audio data received from the wireless communication unit 710 in a call signal reception, call mode, recording mode, voice recognition mode, or broadcast reception mode, or may be stored in the memory unit 760. Audio data can be output.

The touch screen panel 753 may convert a change in capacitance generated due to a user's touch on a specific area of the touch screen into an electrical input signal.

The memory unit 760 may store a program for processing and controlling the control unit 780 and stores input / output data (for example, a phone book, a message, an audio, a still image, a picture, a video, etc.). Can be stored temporarily. For example, the memory unit 760 may store an image captured by the camera 721, for example, a picture or a video.

The interface unit 770 serves as a path for connecting with an external device connected to the terminal 200A. The interface unit 770 receives data from an external device, receives power, transfers the power to each component inside the terminal 200A, or transmits data inside the terminal 200A to the external device. For example, the interface unit 770 may include a wired / wireless headset port, an external charger port, a wired / wireless data port, a memory card port, a port for connecting a device equipped with an identification module, and audio I / O. Output) port, video I / O (Input / Output) port, and earphone port.

The controller 780 may control the overall operation of the terminal 200A. For example, the controller 780 may perform related control and processing for voice call, data communication, video call, and the like.

The controller 780 may include a multimedia module 781 for playing multimedia. The multimedia module 781 may be implemented in the controller 180 or may be implemented separately from the controller 780.

The controller 780 may perform a pattern recognition process for recognizing a writing input or a drawing input performed on a touch screen as text and an image, respectively.

The power supply unit 790 may receive an external power source or an internal power source under the control of the controller 780 to supply power required for the operation of each component.

Features, structures, effects, and the like described in the above embodiments are included in at least one embodiment of the present invention, and are not necessarily limited to only one embodiment. Furthermore, the features, structures, effects, and the like illustrated in the embodiments may be combined or modified with respect to other embodiments by those skilled in the art to which the embodiments belong. Therefore, it should be interpreted that the contents related to such a combination and modification are included in the scope of the present invention.

Claims (10)

Board;
A housing including a first side and a second side disposed on the substrate and opposite to each other, and a third side and a fourth side positioned between the first side and the second side and opposite to each other;
A bobbin disposed within the housing;
A first magnet disposed on the first side of the housing;
A second magnet disposed on the second side of the housing;
A third magnet disposed on the third side of the housing;
A dummy member disposed on the fourth side of the housing;
A first coil disposed in the bobbin and opposed to the first magnet; And
A second coil disposed in the bobbin and opposing the second magnet,
The substrate comprises a third coil,
And a length in the optical axis direction of the third magnet is shorter than a length in the optical axis direction of the first magnet. The method of claim 1,
And a length of the third magnet in the optical axis direction is shorter than a length of the second magnet in the optical axis direction. The method of claim 1,
The third magnet,
A first magnet part including a first N pole and a first S pole; And
The lens driving device including a second magnet portion including a second N pole and a second S pole. The method of claim 3,
And the first magnet portion and the second magnet portion are spaced apart from each other in a direction perpendicular to the optical axis direction. The method of claim 3,
And the third magnet includes a first partition wall positioned between the first magnet part and the second magnet part. The method of claim 1,
And a length in the optical axis direction of the first magnet and a length in the optical axis direction of the second magnet. The method of claim 1,
And a width of the first magnet is smaller than a width of the third magnet. The method of claim 1,
Each of the first magnet and the second magnet,
A lens including a third magnet portion, a fourth magnet portion, and a second partition wall disposed between the third magnet portion and the fourth magnet portion and separating the third magnet portion and the fourth magnet portion from each other in the optical axis direction; drive. The method of claim 1,
And the third coil includes a coil unit facing each of the first to third magnets. The method of claim 1,
The dummy member is perpendicular to the optical axis direction and overlaps the third magnet in a direction from the third side to the fourth side of the housing and does not overlap the first and second coils.

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