KR102402619B1 - Lens driving unit and camera module including the same - Google Patents

Abstract

One embodiment of the lens driving device includes a bobbin having a first coil installed on an outer circumferential surface; a first magnet facing the first coil; a housing supporting the first magnet; upper and lower elastic members coupled to the bobbin and the housing; a base disposed to be spaced apart from the housing by a predetermined distance; a second coil disposed to face the first magnet; a circuit board on which the second coil is installed; a plurality of support members supporting the housing to be movable in second and third directions with respect to the base and connecting at least one of the upper and lower elastic members to the circuit board; and a conducting member electrically connecting the upper and lower elastic members.

Description

Lens driving unit and camera module including the same}

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

The content described in this section merely provides background information for the embodiment and does not constitute the prior art.

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

In the case of a camera module mounted on a small electronic product such as a smartphone, the camera module may frequently be impacted during use, and the camera module may be slightly shaken according to a user's hand shake while shooting. In consideration of such a point, the development of a technique for additionally installing a camera module for image stabilization has been recently demanded.

Various means for preventing hand shake have been studied, and it is necessary to reduce the driving force when correcting the hand shake and to improve durability of the lens driving device and the camera module.

Accordingly, an object of the embodiment is to provide a lens driving device capable of reducing driving force when correcting hand shake and having improved durability, and a camera module including the same.

The technical task to be achieved by the embodiment is not limited to the technical task mentioned above, and other technical tasks not mentioned will be clearly understood by those of ordinary skill in the art to which the embodiment belongs from the description below.

One embodiment of the lens driving device includes a bobbin having a first coil installed on an outer circumferential surface; a first magnet facing the first coil; a housing supporting the first magnet; upper and lower elastic members coupled to the bobbin and the housing; a base disposed to be spaced apart from the housing by a predetermined distance; a second coil disposed to face the first magnet; a circuit board on which the second coil is installed; a plurality of support members supporting the housing to be movable in second and third directions with respect to the base and connecting at least one of the upper and lower elastic members to the circuit board; and a conducting member electrically connecting the upper and lower elastic members.

The upper elastic member may include at least four first to fourth upper elastic members separated from each other, and the conducting member may be provided in at least two so as to be electrically connected to at least two of the upper elastic members separated from each other, respectively. have.

Each of the first to fourth upper elastic members may include a first inner frame coupled to the bobbin; a first outer frame coupled to the housing and connected to the support member; and a first frame connecting portion connecting the first inner frame and the first outer frame.

The lower elastic member may include at least two first and second lower elastic members separated from each other, and the at least two conductive members may be connected to the first and second lower elastic members, respectively.

The first coil may be connected to the plurality of support members through the first and second lower elastic members.

Each of the first and second lower elastic members may include at least one second inner frame coupled to the bobbin; at least one second outer frame coupled to the housing; and a second frame connecting part connecting the at least one second inner frame and the at least one second outer frame.

The at least one second outer frame includes a plurality of second outer frames, and each of the first and second lower elastic members further comprises a 2-2 frame connecting portion connecting the plurality of second outer frames it could be

The at least four upper elastic members further include fifth and sixth upper elastic members separated from each other, each of the fifth and sixth upper elastic members being formed in a direction orthogonal to the first direction, and the conducting member It may include a first protruding frame connected to.

Each of the first and second lower elastic members may include a second protruding frame formed at a position opposite to the first protruding frame and connected to the conducting member.

The conducting member may have an upper end fixedly coupled to the first protruding frame, and a lower end fixedly coupled to the second protruding frame.

The support member may have a lower end fixedly coupled to the circuit board.

The support member may have a lower end fixedly coupled to the second coil.

The first length corresponding to the length of the conducting member measured from the lower surface of the upper elastic member to the upper surface of the lower elastic member is a first length corresponding to the length of the supporting member measured from the lower surface of the upper elastic member to the upper surface of the circuit board 2 It may be provided shorter than the length.

The first length may be provided in a range of 0.3 mm to 0.5 mm.

An embodiment of the lens driving device includes a first sensor for detecting displacement of the bobbin in a first direction, wherein the upper elastic member includes at least four first to fourth upper elastic members separated from each other, , the first sensor may be connected to the plurality of support members through the first to fourth upper elastic members.

The lower elastic member may include at least two first and second lower elastic members separated from each other, and the first coil may be connected to the plurality of support members through the first and second lower elastic members. .

The first sensor may be disposed, coupled, or mounted on the bobbin to move together.

An embodiment of the lens driving device may include a sensor substrate coupled to the bobbin, and the first sensor may have a shape capable of being disposed, coupled, or mounted on the sensor substrate.

An embodiment of the lens driving device includes: a first sensor for detecting displacement of the bobbin in a first direction; and a second magnet disposed to face the first sensor, wherein the first and second magnets may be integrated.

The first sensor and the first magnet may be disposed to face each other so that a virtual central horizontal line passing through the center of the first sensor and perpendicular to the optical axis coincides with the upper tip of the first magnet.

The bobbin may be moved up and down in the optical axis direction based on a point where the virtual central horizontal line coincides with the upper tip of the first magnet.

An embodiment of the lens driving device includes: a first sensor for detecting displacement of the bobbin in a first direction; and a second magnet disposed to face the first sensor, wherein the first and second magnets may be separate.

The shape and number of the plurality of support members may be symmetrical to each other in the second and third directions.

The lower elastic member may include at least four first to fourth lower elastic members separated from each other, and the first sensor may be connected to the plurality of support members through the first to fourth lower elastic members. .

One embodiment of the camera module, the lens driving device described above; and an image sensor mounted on the circuit board.

In an embodiment, the lens driving device and the camera module including the same can accurately detect the displacement of the bobbin by using a sensor for detecting the displacement of the bobbin, and reduce the weight of the housing to improve responsiveness.

In addition, the lens driving device has an effect of reducing the driving force required when the bobbin is driven in the second direction and the third direction due to the above-described structure. Accordingly, the lens driving device has an effect of performing hand-shake correction with a small driving force.

In addition, since excessive driving force is not applied to the support member, durability of the lens driving device including the support member can be increased.

1 is a schematic perspective view of a lens driving device according to an embodiment.
FIG. 2 is an exploded perspective view of the lens driving device illustrated in FIG. 1 .
3 is a perspective view of the lens driving device according to the embodiment in which the cover member illustrated in FIGS. 1 and 2 is removed.
4 is an exploded perspective view of a bobbin, a first coil, a magnet, a first sensor, and a sensor substrate in the lens driving device according to the embodiment.
5A is a plan view of the bobbin and the magnet shown in FIG. 4 , FIG. 5B is a perspective view of the sensor substrate shown in FIG. 4 according to another embodiment, and FIG. 5C is an embodiment of the first sensor and the sensor substrate shown in FIG. 4 . shows a rear perspective view by .
6 is a plan perspective view of a housing according to an embodiment.
7 is a bottom exploded perspective view of the housing and the magnet according to the embodiment.
FIG. 8 is a cross-sectional view taken along line II' shown in FIG. 3 .
9 is a graph showing the precision according to the optimal position of the first sensor.
10 is a plan perspective view illustrating a bobbin, a housing, an upper elastic member, a first sensor, a sensor substrate, and a plurality of supporting members coupled thereto.
11 is a bottom perspective view showing a bobbin, a housing, a lower elastic member, and a plurality of support members coupled thereto.
12 is a combined perspective view of an upper elastic member, a lower elastic member, a supporting member, an energizing member, and a circuit board according to an embodiment.
13 is a front view showing the coupling of the upper elastic member, the lower elastic member, the supporting member, the energizing member, the circuit board, the bobbin and the first coil according to the embodiment.
14 is an exploded perspective view of a base, a second coil, and a circuit board.

Hereinafter, an embodiment will be described in detail with reference to the accompanying drawings. Since the embodiment may have various changes and may have various forms, specific embodiments will be illustrated in the drawings and described in detail in the text. However, this is not intended to limit the embodiment to a specific disclosed form, and it should be understood to include all changes, equivalents, and substitutes included in the spirit and scope of the embodiment. In this process, the size or shape of the components shown in the drawings may be exaggerated for clarity and convenience of explanation.

Terms such as “first” and “second” may be used to describe various elements, but the elements should not be limited by the terms. The above terms are used only for the purpose of distinguishing one component from another. In addition, terms specifically defined in consideration of the configuration and operation of the embodiment are only for describing the embodiment, and do not limit the scope of the embodiment.

In the description of the embodiment, in the case where it is described as being formed in "up (up)" or "below (on or under)" of each element, on (on or under) ) includes both elements in which two elements are in direct contact with each other or one or more other elements are disposed between the two elements indirectly. In addition, when expressed as “up (up)” or “down (on or under)”, the meaning of not only the upward direction but also the downward direction based on one element may be included.

Also, as used hereinafter, relational terms such as "upper/upper/above" and "lower/lower/below" etc. do not necessarily require or imply any physical or logical relationship or order between such entities or elements, It may be used only to distinguish one entity or element from another entity or element.

Also, as used hereinafter, relational terms such as “first” and “second,” “top/top/top” and “bottom/bottom/bottom” refer to any physical or logical relationship between such entities or elements or It may be used only to distinguish one entity or element from another, without requiring or implying an order.

In the drawings, the thickness or size of each layer is exaggerated, omitted, or schematically illustrated for convenience and clarity of description. In addition, the size of each component does not fully reflect the actual size.

Hereinafter, a lens driving apparatus according to an embodiment will be described with reference to the accompanying drawings. For convenience of description, the lens driving device according to the embodiment is described using a Cartesian coordinate system (x, y, z), but may be described using other coordinate systems, and the embodiment is not limited thereto. In each figure, the x-axis and y-axis refer to directions perpendicular to the z-axis, which is the optical axis direction, 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'.

A 'shake correction device' applied to a small camera module of a mobile device such as a smartphone or tablet PC is a device that prevents the outline of the captured image from being clearly formed due to the vibration caused by the user's hand shake when shooting a still image. It may mean a device configured to be able to

In addition, the 'auto-focusing device' is a device for automatically focusing an image of a subject on an image sensor surface. Such an image stabilization device and auto-focusing device may be configured in various ways. In the lens driving device according to the embodiment, the optical module composed of at least one lens moves in a first direction parallel to the optical axis, or in the first direction A handshake correction operation and/or an auto-focusing operation may be performed by moving the surface formed by the second and third directions perpendicular to the .

Here, the second and third directions may include directions substantially close to the x-axis and y-axis directions as well as the x-axis and y-axis directions. That is, when viewed from the driving side of the embodiment, the housing 140 may move in parallel to the x-axis and the y-axis, but also, when moving while being supported by the support member 220, it may move slightly inclined to the x-axis and the y-axis. have.

1 is a schematic perspective view of a lens driving device according to an embodiment, and FIG. 2 is an exploded perspective view of the lens driving device illustrated in FIG. 1 .

1 and 2 , the lens driving device according to the embodiment may include a first lens driving unit, a second lens driving unit, and a cover member 300 .

The first lens driving unit may serve as the aforementioned auto-focusing device. That is, the first lens driving unit may serve to move the bobbin 110 in the first direction by the interaction between the magnet 130 and the first coil 120 .

The second lens driving unit may serve as the above-described camera shake correction device. That is, the second lens driving unit may serve to move all or part of the first lens driving unit in the second and/or third direction by the interaction between the magnet 130 and the second coil 230 . .

The cover member 300 may be provided in a substantially box shape, and may surround the first and second lens driving units.

3 is a perspective view of the lens driving device according to the embodiment in which the cover member 300 illustrated in FIGS. 1 and 2 is removed.

The first lens driving unit includes a bobbin 110 , a first coil 120 , a magnet 130 , a housing 140 , an upper elastic member 150 , and a lower elastic member 160 , a first sensor 170 , and a sensor substrate 180 may be included.

4 is a lens driving device according to the embodiment, the bobbin 110, the first coil 120, the magnet (130; 130-1, 130-2, 130-3, 130-4), the first sensor 170 ) and an exploded perspective view of the sensor substrate 180 .

5A is a plan view of the bobbin 110 and the magnets 130:130-1, 130-2, 130-3, and 130-4 shown in FIG. 4, and FIG. 5B is the sensor substrate 180 shown in FIG. ) shows a perspective view according to another embodiment, and FIG. 5C is a rear perspective view of the first sensor 170 and the sensor substrate 180 shown in FIG. 4 according to an embodiment.

Referring to the above drawings, the bobbin 110 may be reciprocally installed in the inner space of the housing 140 in a first direction that is an optical axis direction or a direction parallel to the first direction. The first coil 120 is installed on the outer circumferential surface of the bobbin 110 as illustrated in FIG. 4 , so that the first coil 120 and the magnet 130 may interact electromagnetically. To this end, the magnet 130 may be disposed on the periphery of the bobbin 110 to face the first coil 120 .

In addition, when the bobbin 110 rises and/or descends in a first direction parallel to the optical axis or a direction parallel to the first direction to perform an auto-focusing function, it is elastic by the upper and lower elastic members 150 and 160 . can be supported by To this end, the upper and lower elastic members 150 and 160 may be coupled to the bobbin 110 and the housing 140 as will be described later.

Although not shown, the lens driving device may include a lens barrel (not shown) in which at least one lens may be installed on the inner side (ie, inner side) of the bobbin 110 . The lens barrel may be installed inside the bobbin 110 in various ways. For example, the lens barrel may be directly fixed to the inside of the bobbin 110 , or a single lens may be integrally formed with the bobbin 110 without the lens barrel. The lens coupled to the lens barrel may be configured as one sheet, or two or more lenses may be configured to form an optical system.

According to another embodiment, although not shown, female threads are formed on the inner peripheral surface of the bobbin 110, and male threads corresponding to the female threads are formed on the outer peripheral surface of the lens barrel, and the lens barrel is screwed into the bobbin ( 110), but the embodiment is not limited thereto.

The bobbin 110 may include first and second protrusions 111 and 112 .

The first protrusion 111 may include a guide portion 111a and a first stopper 111b. The guide part 111a may serve to guide the installation position of the upper elastic member 150 . For example, as illustrated in FIG. 3 , the guide part 111a may guide a path through which the first frame connection part 153 of the upper elastic member 150 passes. To this end, according to an exemplary embodiment, the plurality of guide portions 111a may be formed to protrude in second and third directions orthogonal to the first direction. In addition, as illustrated, the guide portion 111a may be provided in a symmetrical structure with respect to the center of the bobbin 110 on a plane formed by the x-axis and the y-axis, and interference with other components is excluded as illustrated. It may be provided in an asymmetric structure.

The second protrusion 112 may be formed to protrude in second and third directions orthogonal to the first direction. In addition, the upper surface 112a of the second protrusion 112 may have a shape in which the first inner frame 151 of the upper elastic member 150 to be described later can be seated.

6 is a plan perspective view of the housing 140 according to the embodiment, and FIG. 7 is an exploded perspective view of the bottom surface of the housing 140 and the magnet 130 according to the embodiment.

Referring to FIG. 6 , the housing 140 may include first seating grooves 146 formed at positions corresponding to the first and second protrusions 111 and 112 .

In addition, the first stopper 111b and the second protrusion 112 of the first protrusion 111 have a first direction or a direction parallel to the first direction, which is a direction in which the bobbin 110 is parallel to the optical axis for the auto-focusing function. When moving to, even if the bobbin 110 moves beyond a prescribed range due to an external impact, etc. can play a role. To this end, the first stopper 111b may be formed to protrude further than the guide portion 111a in the circumferential second or third direction from the outer circumferential surface of the bobbin 110 , and the second protrusion 112 is also an upper elastic member 150 may be formed to protrude further than the upper surface 112a on which it is seated.

Referring to FIG. 6 , when the contact state between the bottom surfaces of the first and second protrusions 111 and 112 and the bottom surface 146a of the first seating groove 146 is configured as an initial position, the auto-focusing function is a conventional It can be controlled like one-way control in a voice coil motor (VCM). That is, when the current is supplied to the first coil 120, the bobbin 110 rises, and when the supply of current is cut off, the bobbin 120 descends, so that the auto-focusing function can be implemented.

However, when the position in which the bottom surfaces of the first and second protrusions 111 and 112 and the bottom surface 146a of the first seating groove 146 are spaced apart by a predetermined distance is configured as the initial position, the auto-focusing function is performed according to the existing voice coil. It can be controlled according to the direction of the current, such as bidirectional control in a motor. That is, the auto-focusing function may be implemented by moving the bobbin 110 in an upward or downward direction parallel to the optical axis. For example, when a forward current is applied, the bobbin 110 may move upward, and when a reverse current is applied, the bobbin 110 may move downward.

The third protrusion 148 of the housing 140 may be convexly formed at a position of the housing 140 corresponding to the space having the first width W1 between the first and second protrusions 111 and 112 . . A surface of the third protrusion 148 facing the bobbin 110 may have the same shape as the side shape of the bobbin 110 . At this time, the first width W1 between the first and second protrusions 111 and 112 shown in FIG. 4 and the second width W2 of the third protrusion 148 shown in FIG. 6 have a certain tolerance. can be formed to Due to this, rotation of the third protrusion 148 between the first and second protrusions 111 and 112 may be restricted. Then, even if the bobbin 110 receives a force in a rotational direction about the optical axis rather than the optical axis direction, the third protrusion 148 may prevent the bobbin 110 from rotating.

Meanwhile, according to the embodiment, the first sensor 170 may be disposed, coupled, or mounted on the bobbin 110 to move together with the bobbin 110 . The first sensor 170 may detect a displacement of the bobbin 110 in a first direction parallel to the optical axis or a direction parallel to the first direction, and may output the detected result as a feedback signal. Using a result of detecting displacement in the first direction or a direction parallel to the first direction of the bobbin 110 using a feedback signal, the bobbin 110 in the first direction or in a direction parallel to the first direction Displacement can be adjusted.

The first sensor 170 may be disposed, coupled, or mounted on the bobbin 110 or the housing 140 in various forms, and depending on the shape in which the first sensor 170 is disposed, coupled or mounted, the first sensor ( 170) may receive current in various ways.

According to an embodiment, the first sensor 170 may be coupled to the housing 140 , and a separate sensor magnet (not shown) facing the first sensor 170 may be disposed on the bobbin 110 . The first sensor 170 is disposed, coupled, or mounted on the side surface or corner (eg, the surface of the third protrusion 148 ) of the first seating groove 146 of the housing 140 illustrated in FIG. 6 . it might be In this case, due to the magnetic force exerted by the separate sensor magnet on the magnet 130, a tilt is caused to the bobbin 110 moving in the first direction, which is the optical axis direction, or in a direction parallel to the first direction, and the accuracy of the feedback signal is decreased. can be lowered In consideration of this, a separate sensor magnet may be disposed, combined, or mounted at a position of the bobbin 110 where the interaction between the separate sensor magnet and the magnet 130 is minimized.

According to another embodiment, the first sensor 170 may be disposed, coupled, or mounted directly on the outer circumferential surface of the bobbin 110 . In this case, a surface electrode (not shown) is formed on the outer peripheral surface of the bobbin 110 , and the first sensor 170 may receive current through the surface electrode.

According to another embodiment, as shown, the first sensor 170 may be indirectly disposed, coupled, or mounted on the bobbin 110 . For example, the first sensor 170 may be disposed, coupled, or mounted on the sensor substrate 180 , and the sensor substrate 180 may be coupled to the bobbin 110 . That is, the first sensor 170 may be indirectly disposed, coupled, or mounted on the bobbin 110 through the sensor substrate 180 .

When the first sensor 170 is disposed directly or indirectly on the bobbin 110 as in the other embodiments and other embodiments described above, the sensor magnet may be disposed separately from the magnet 130, and the magnet ( 130) may be used as a magnet for a sensor.

Hereinafter, the first sensor 170 is indirectly disposed, coupled, or mounted on the bobbin 110 through the sensor substrate 180, and the magnet 130 is described as being used as a magnet for the sensor, but the embodiment does not not limited

4 and 5A , a support groove 114 is provided on the side of the bobbin 110 , and the sensor substrate 180 may be inserted into the support groove 114 to be coupled to the bobbin 110 . For example, the sensor substrate 180 may have a ring shape as shown, but the embodiment is not limited to the shape of the sensor substrate 180 . The support groove 114 may be provided between the outer peripheral surface of the bobbin 110 and the first and second protrusions 111 and 112 . In this case, the first sensor 170 may have a shape that can be disposed, coupled, or mounted on the sensor substrate 180 . For example, as illustrated in FIGS. 4 and 5B , the first sensor 170 is disposed in various forms on the upper side (A1), the middle (A2) or the lower side (A3) of the outer peripheral surface of the sensor substrate 180, It may be combined or mounted. In this case, the first sensor 170 may receive a current from the outside through the circuit of the sensor substrate 180 . For example, as illustrated in FIG. 5B , a mounting groove 183 is formed on the outer circumferential surface of the sensor substrate 180 , and the first sensor 170 may be disposed, coupled, or mounted in the mounting groove 183 . have. By forming a tapered inclined surface (not shown) on at least one surface of the mounting groove 183 , it may be configured to more smoothly inject epoxy for assembling the first sensor 170 . In addition, a separate epoxy or the like may not be injected into the mounting groove 183 , but the placement force, coupling force, or mounting force of the first sensor 170 may be increased by injecting epoxy or the like.

Alternatively, as illustrated in FIG. 4 , the first sensor 170 may be supported by being attached to the front surface of the sensor substrate 180 using an adhesive member such as epoxy or double-sided tape. As illustrated in FIG. 4 , the first sensor 170 may be disposed, coupled, or mounted in the center of the sensor substrate 180 .

The bobbin 110 may include a receiving groove 116 suitable for accommodating the first sensor 170 disposed, coupled, or mounted on the sensor substrate 180 . Also, the receiving groove 116 may be formed in a space between the first and second protrusions 111 and 112 .

The sensor substrate 180 may include a body 182 , elastic member contact portions 184-1, 184-2, 184-3, and 184-4, and circuit patterns L1, L2, L3, and L4.

When the support groove 114 formed between the outer peripheral surface of the bobbin 110 and the first and second protrusions 111 and 112 has the same shape as the outer peripheral surface of the bobbin 110, the body inserted into the support groove 114 ( 182 may be inserted into the support groove 114 to have a fixable shape. 3 to 5A , the support groove 114 and the body 182 may have a circular planar shape, but the embodiment is not limited thereto. According to another embodiment, the support groove 114 and the body 182 may have a polygonal planar shape.

The body 182 of the sensor substrate 180 may include a first segment on which the first sensor 170 is disposed, coupled, or mounted on an outer circumferential surface thereof, and a second segment extending in contact with the first segment. In addition, the sensor substrate 180 can be easily inserted into the support groove 114 by providing an opening 181 in a portion facing the first segment, but the embodiment has a specific shape of the sensor substrate 180 . is not limited to

In addition, the elastic member contact portion (184-1, 184-2, 184-3, 184-4) in a direction capable of contacting the first inner frame 151 from the body 182, for example, a first direction that is an optical axis direction or It may protrude in a direction parallel to the first direction. The elastic member contact portions 184-1, 184-2, 184-3, and 184-4 are portions to be connected to the first inner frame 151 of the upper elastic member 150 to be described later.

The circuit patterns L1, L2, L3, and L4 are formed on the body 182 and electrically connect the first sensor 170 and the elastic member contact parts 184-1, 184-2, 184-3, and 184-4. can For example, the first sensor 170 may be provided as a Hall sensor, and any sensor capable of detecting a change in magnetic force may be used.

If the first sensor 170 is implemented as a Hall sensor, the Hall sensor 170 may have a plurality of pins. For example, the plurality of pins may include first and second pins. For example, referring to FIG. 5C , the first pin may include a 1-1 pin P11 and a 1-2 pin P12 respectively connected to a voltage and a ground, and the second pin is sensed. It may include a 2-1 th pin P21 and a 2-2 th pin P22 for outputting a result. Here, the sensed result that is the feedback signal output through the 2-1 and 2-2 pins P21 and P22 may be in the form of a current, but the embodiment is not limited to the form of the feedback signal.

The 1-1, 1-2, 2-1, and 2-2 pins P11, P12, P21, and P22 of the first sensor 170 are connected through the circuit patterns L1, L2, L3, and L4. The elastic member contact portions 184-1, 184-2, 184-3, and 184-4 may be electrically connected to each other, respectively. For example, referring to FIG. 5C , first, second, third, and fourth lines L1, L2, L3, and L4 that are circuit patterns 1-1, 1-2, and 2-1 and 2-2 pins (P11, P12, P21, P22) are respectively connected to the fourth, third, second and first elastic member contact portions 184-4, 184-3, 184-1, and 184-2 can According to one embodiment, the first to fourth lines (L1, L2, L3, L4) may be formed to be visible to the naked eye, according to another embodiment, these (L1, L2, L3, L4) are visible to the naked eye. It may be formed on the body 182 so as not to be seen.

FIG. 8 is a cross-sectional view taken along line I-I' shown in FIG. 3 .

8, passing through the center of the optical axis direction of the first sensor 170, the virtual central horizontal line 172 formed in the second direction orthogonal to the optical axis coincides with the upper tip 131 of the magnet 130, The first sensor 170 may be disposed to face the magnet 130 .

At this time, the bobbin 110 can move up and down in the first direction or a direction parallel to the first direction, which is the optical axis direction, using the point where the virtual central horizontal line 172 coincides with the upper tip 131 of the magnet 130 as a reference point. However, the embodiment is not limited thereto.

9 is a graph showing the precision according to the optimal position of the first sensor 170 . The horizontal axis indicates the position of the first sensor 170 and the vertical axis indicates the accuracy of the first sensor 170 .

8 and 9 , it can be seen that the sensing efficiency of the first sensor 170 is maximized when the virtual central horizontal line 172 is positioned at the upper tip 131 of the magnet 130 .

10 is a plan perspective view showing the bobbin 110 , the housing 140 , the upper elastic member 150 , the first sensor 170 , the sensor substrate 180 , and the plurality of support members 220 are combined.

11 is a bottom perspective view in which the bobbin 110 , the housing 140 , the lower elastic member 160 and the plurality of support members 220 are coupled.

On the other hand, after the first coil 120 is wound on the outer circumferential surface of the bobbin 110 by a worker or a machine, both ends of the first coil 120 , the line of sight and the vertical line, are respectively directed from the bottom of the bobbin 110 in the first direction. It can be wound around a pair of protruding winding projections 119 and fixed. In this case, the position of the end of the first coil 120 wound around the winding protrusion 119 may be changed according to the operator. As illustrated in FIG. 11 , a pair of winding protrusions 119 may be disposed at positions symmetrical with respect to the center of the bobbin 110 , but the embodiment is not limited thereto.

As illustrated in FIG. 8 , the first coil 120 may be inserted and coupled to the coil groove 118 formed on the outside of the bobbin 110 . In addition, as illustrated in FIG. 2 , the first coil 120 may be provided as an angled ring-shaped coil block, but is not limited thereto. According to another embodiment, the first coil 120 may be wound directly on the outer circumferential surface of the bobbin 110 or may be wound using a coil ring (not shown). Here, the coil ring may be coupled to the bobbin 110 in the same manner that the sensor substrate 180 is fitted and fixed in the support groove 114 , and the first coil 120 is wound on the outside of the bobbin 110 or Instead of being laid out, it can be wound on a coil ring. In any case, the line of sight and the vertical wire of the first coil 120 may be wound and fixed around the winding protrusion 119 , and other configurations are the same.

The first coil 120 may be formed in an approximately octagonal shape as shown in FIG. 2 . This corresponds to the shape of the outer peripheral surface of the bobbin 110 , because the bobbin 110 has an octagonal shape as illustrated in FIG. 5A . In addition, at least four surfaces of the first coil 120 may be provided in a straight line, and a corner portion connecting these surfaces may also be provided in a straight line, but the present invention is not limited thereto and may be formed in a round shape.

A portion formed in a straight line in the first coil 120 may be formed to be a surface corresponding to the magnet 130 . Also, the surface of the magnet 130 corresponding to the first coil 120 may have the same curvature as the curvature of the first coil 120 . That is, if the first coil 120 is a straight line, the corresponding magnet 130 may have a straight line. If the first coil 120 is curved, the corresponding magnet 130 may have a curved surface. Also, even if the first coil 120 is curved, the corresponding magnet 130 may have a straight surface, or vice versa.

The first coil 120 is for performing an autofocus function by moving the bobbin 110 in a first direction parallel to the optical axis or in a direction parallel to the first direction, and interacts with the magnet 130 when current is supplied. may form an electromagnetic force, and the formed electromagnetic force may move the bobbin 110 in the first direction or in a direction parallel to the first direction.

The first coil 120 may be configured to correspond to the magnet 130 . When the magnet 130 is configured as a single body and the entire surface facing the first coil 120 has the same polarity, the second One coil 120 may also be configured such that a surface corresponding to the magnet 130 has the same polarity.

Alternatively, when the magnet 130 is divided into two or four in a plane perpendicular to the optical axis so that the surface facing the first coil 120 is divided into two or more, the first coil 120 is also divided into a magnet It is also possible to be divided into a number corresponding to 130 .

The magnet 130 may be installed at a position corresponding to the first coil 120 . For example, referring to FIG. 8 , the magnet 130 may be disposed to face the first sensor 170 and also face the first coil 120 . As described above, according to an embodiment, the magnet for the first sensor 170 is not separately disposed and the magnet 130 is used as the magnet for the first sensor 170 .

In this case, the magnet 130 may be accommodated and supported in the first side portion 141 of the housing 140 as shown in FIG. 7 . The shape of the magnet 130 is a shape corresponding to the first side 141 of the housing 140 and may have a substantially rectangular parallelepiped shape, and the surface facing the first coil 120 corresponds to the first coil 120 . It may be formed to correspond to the curvature of the surface.

The magnet 130 may be configured as a single body, and in the case of an embodiment, referring to FIG. 5A , the surface facing the first coil 120 is the S pole 132 , and the outer surface is the N pole 134 . can be placed However, the present invention is not limited thereto, and the reverse configuration is also possible.

At least two or more magnets 130 may be installed, and according to an embodiment, four may be installed. At this time, as illustrated in FIG. 5A , the magnet 130 may have a substantially rectangular shape, or, alternatively, may have a triangular shape or a rhombus shape.

However, the surface of the magnet 130 facing the first coil 120 may be formed as a straight line, but the present invention is not limited thereto. When the corresponding surface of the first coil 120 is a curve, a curve having a corresponding curvature may be provided as With this configuration, it is possible to maintain a constant distance from the first coil 120 . In the case of the embodiment, one may be installed on each of the four first side portions 141 of the housing 140 . However, the present invention is not limited thereto, and either one of the magnet 130 and the first coil 120 may be flat, and the other may be configured as a curved surface, depending on the design. Alternatively, all of the facing surfaces of the first coil 120 and the magnet 130 may be curved surfaces, and in this case, the curvatures of the facing surfaces of the first coil 120 and the magnet 130 may be the same.

As illustrated in FIG. 5A , if the plane of the magnet 130 is rectangular, one pair of the plurality of magnets 130 may be disposed parallel to the second direction, and the other pair may be disposed parallel to the third direction. . According to such an arrangement structure, it may be possible to control the movement of the housing 140 for handshake correction, which will be described later.

On the other hand, the housing 140 may have a polygonal planar shape, and according to an embodiment, as illustrated in FIG. 6 , the upper side of the outer side of the housing 140 has a square planar shape, but as illustrated in FIGS. 6 and 7 , Likewise, the lower side of the inner wall may have an octagonal planar shape. Accordingly, the housing 140 may include a plurality of side portions, for example, may include four first side portions 141 and four second side portions 142 .

The first side portion 141 may correspond to a portion where the magnet 130 is installed, and the second side portion 142 may correspond to a portion where the support member 220 to be described later is disposed. The first side portion 141 interconnects the plurality of second side portions 142 and may include a plane having a predetermined depth.

According to an embodiment, the first side portion 141 may be formed to have an area corresponding to the magnet 130 or larger than that. Referring to FIG. 7 , the magnet 130 may be fixed to the magnet seating part 141a formed in the lower inner portion of the first side part 141 . The magnet seating portion 141a may be formed in a groove corresponding to the size of the magnet 130 , and may be disposed to face the magnet 130 and at least three surfaces, that is, both side surfaces and an upper surface. An opening may be formed on the bottom surface of the magnet seating part 141a, that is, on the surface facing the second coil 230 to be described later so that the bottom surface of the magnet 130 directly faces the second coil 230. .

The magnet 130 may be fixed to the magnet seating portion 141a with an adhesive, but is not limited thereto, and an adhesive member such as a double-sided tape may be used. Alternatively, instead of forming the magnet seating portion 141a as a concave groove as shown in FIG. 7 , a portion of the magnet 130 may be exposed or formed as a mounting hole into which it can be fitted.

The first side portion 141 may be disposed parallel to the side surface of the cover member 300 . Also, the first side portion 141 may be formed to have a larger surface than the second side portion 142 . The second side portion 142 may form a path through which the support member 220 passes. An upper portion of the second side portion 142 may include a first through hole 147 . The support member 220 may be connected to the upper elastic member 150 through the first through hole 147 .

Also, the housing 140 may further include a second stopper 144 . The second stopper 144 may prevent the upper surface of the body of the housing 140 from directly colliding with the inner surface of the cover member 300 illustrated in FIG. 1 .

In addition, a plurality of first upper support protrusions 143 may protrude from the second side portion 142 of the housing 140 on the upper surface. The plurality of first upper support protrusions 143 may have a hemispherical shape as illustrated, or may have a cylindrical shape or a prismatic shape, but the embodiment is not limited to the shape of the first upper support protrusion 143 . does not

In addition, referring to FIGS. 6 and 7 , the reason that the first recess 142a is formed in the second side portion 142 of the housing 140 is not only to form a path through which the support member 220 passes, but also damping This is to secure a space to fill the damping member that can play a role. That is, the damping member may be filled in the recess 142a.

The damping member may be made of a photocurable resin. Suitably, the damping member may be made of a UV curable resin, more preferably the damping member may be made of UV curable silicone, and the damping member may be formed in a gel form.

12 is a combined perspective view of the upper elastic member 150 , the lower elastic member 160 , the support member 220 , the conducting member 154 , and the circuit board 250 according to the embodiment.

In an embodiment, the lower elastic member 160 may be formed in a two-part structure to apply power to the first coil 120 , and the upper elastic member 150 outputs a feedback signal from the first sensor 170 . And to apply power to the first sensor 170, it may be formed in a four-part structure.

In addition, in the embodiment, the first coil 120 may be energized with the upper elastic member 150 , the lower elastic member 160 , and the circuit board 250 to receive power from the circuit board 250 . The specific structure is as follows.

According to the embodiment, the upper elastic member 150 may include at least four first to fourth upper elastic members 150; 150-1, 150-2, 150-3, 150-4 electrically divided from each other. can The first to fourth upper elastic members 150-1, 150-2, 150-3, and the first to fourth elastic member contact portions 184-1, 184-2, 184-3, and 184-4 connected to the first sensor 170 are 150 - 4) may be connected to the plurality of support members 220 . That is, the first upper elastic member 150-1 connected to the elastic member contact portion 184-4 is the 1-1 and 1-2 support members 220-1a and 220 which are the first support members 220-1. -1b) and the second upper elastic member 150-2 connected to the elastic member contact part 184-3 is connected to the second support member 220-2, and the elastic member contact part 184-2 and The connected third upper elastic member 150-3 is connected to the 3-1 and 3-2 support members 220-3a and 220-3b which are the third support members 220-3, and the elastic member contact portion ( The fourth upper elastic member 150 - 4 connected to 184 - 1 may be connected to the fourth support member 220 - 4 .

Each of the first and third upper elastic members 150-1 and 150-3 150a includes a first inner frame 151, a 1-1 outer frame 152a, and a first frame connection part 153, , each of the second and fourth upper elastic members 150-2 and 150-4 150b includes a first inner frame 151, a 1-1 outer frame 152b, and a first frame connection part 153 can do. The first inner frame 151 may be coupled to the bobbin 110 and the corresponding elastic member contact portions 184-1, 184-2, 184-3, and 184-4. As shown in FIG. 4 , when the upper surface 112a of the second protrusion 112 is flat, the first inner frame 151 may be mounted on the upper surface 112a and then fixed by an adhesive member. According to another embodiment, when a support protrusion (not shown) is formed on the upper surface 112a unlike that shown in FIG. 4 , the support protrusion is formed on the 2-1 through hole 151a formed in the first inner frame 151 . After the is inserted, it may be fixed by thermal fusion, or may be fixed with an adhesive member such as epoxy.

The 1-1 outer frames 152a and 152b may be coupled to the housing 140 and connected to the support member 220 , and the first frame connection part 153 may be connected to the first inner frame 151 and the 1-1 outer frame. Frames 152a and 152b may be connected. The 1-1 outer frame 152b has a shape in which the 1-1 outer frame 152a is divided, but the embodiment is not limited thereto. That is, according to another embodiment, the 1-1 outer frame 152a may be divided into the same shape as the 1-1 outer frame 152b.

The first frame connection part 153 may be bent at least once to form a pattern having a predetermined shape. The bobbin 110 may be elastically supported by upward and/or descending motions in the first direction parallel to the optical axis through a change in the position of the first frame connection part 153 and micro-deformation.

In the housing 140 , the plurality of first upper support protrusions 143 may couple and fix the 1-1 outer frames 152a and 152b of the upper elastic member 150 illustrated in FIG. 12 and the housing 140 . have. According to an exemplary embodiment, a 2-2 through hole 157 having a shape corresponding to a position corresponding to the first upper support protrusion 143 may be formed in the 1-1 outer frames 152a and 152b. In this case, the first upper support protrusion 143 and the second through hole 157 may be fixed by thermal fusion or an adhesive member such as epoxy. In order to fix the plurality of first to fourth upper elastic members 150-1, 150-2, 150-3, and 150-4, a sufficient number of first upper support protrusions 143 may be provided. Accordingly, it is possible to prevent the first to fourth upper elastic members 150 - 1 , 150 - 2 , 150 - 3 , and 150 - 4 from being incompletely coupled to the housing 140 .

In addition, a distance between the plurality of first upper support protrusions 143 may be appropriately arranged within a range capable of avoiding interference with neighboring components. That is, each of the first upper support protrusions 143 may be disposed on the edge of the housing 140 at regular intervals symmetrically with respect to the center of the bobbin 110 , and their spacing is not constant, but the bobbin 110 . ) may be arranged to be symmetrical with respect to a specific imaginary line passing through the center.

After the first inner frame 151 is coupled to the bobbin 110 and the 1-1 outer frames 152a and 152b are coupled to the housing 140 , the elastic member contact portion 184 - 1 of the sensor substrate 180 . , 184-2, 184-3, 184-4) and conductive connections (CP11, CP12, CP13, CP14) such as soldering to the first inner frame 151 are performed as shown in FIG. 10, the first sensor Power of different polarity is applied to two pins (P11, P12) of the four pins (P11, P12, P21, P22) of 170, and the remaining two pins among the four pins of the first sensor 170 A feedback signal from (P21, P22) can be sent out. In this way, the upper elastic member 150 includes the first to fourth upper elastic members 150-1, 150-2, 150-3; 150-4) can be divided into four.

The first to fourth upper elastic members 150 - 1 , 150 - 2 , 150 - 3 and 150 - 4 are connected to the circuit board 250 through the support member 220 . That is, the first upper elastic member 150-1 is connected to the circuit board 250 through at least one of the 1-1 and 1-2 support members 220-1a and 220-1b, and the second upper elastic member 150-1 is connected to the second upper side elastic member 150-1. The elastic member 150-2 is connected to the circuit board 250 through the second support member 220-2, and the third upper elastic member 150-3 is a 3-1 or 3-2 support member. It is connected to the circuit board 250 through at least one of 220-3a and 220-3b, and the fourth upper elastic member 150-4 is connected to the circuit board 250 through the fourth supporting member 220-4. can be connected to Accordingly, the first sensor 170 receives power supplied from the circuit board 250 through the support member 220 and the upper elastic member 150 or provides a feedback signal outputted therefrom to the circuit board 250 . may be

Meanwhile, the lower elastic member 160 may include first and second lower elastic members 160 - 1 and 160 - 2 electrically separated from each other. The first coil 120 may be connected to the plurality of support members 220 through the first and second lower elastic members 160 - 1 and 160 - 2 .

Each of the first and second lower elastic members 160-1 and 160-2 includes at least one second inner frame 161-1, 161-2, and at least one second outer frame 162-1, 162- 2) and at least one second frame connection unit 163-1, 163-2.

The second inner frames 161-1 and 161-2 may be coupled to the bobbin 110 , and the second outer frames 162-2 and 162-2 may be coupled to the housing 140 . The 2-1 frame connection part 163-1 connects the second inner frame 161-1 and the second outer frame 162-1, and the 2-2 frame connection part 163-2 includes two second frames. The two outer frames 162-1 and 162-2 may be connected, and the 2-3th frame connection part 163-3 may connect the second inner frame 161-2 and the second outer frame 162-2 to each other. can

In addition, the first lower elastic member 160-1 further includes a first coil frame 164-1, and the second lower elastic member 160-2 further includes a second coil frame 164-2. can do. Referring to FIG. 11 , the first and second coil frames 164-1 and 164-2 are disposed on the upper surface of the first coil 120 at a position close to the pair of winding protrusions 119 on which both ends of the first coil 120 are wound. The end of the first coil 120 is connected to be energized by a conductive connection member such as solder, etc., so that the first and second lower elastic members 160-1 and 160-2 receive power of different polarities from each other. It can be transmitted to one coil 120 . In this way, the lower elastic member 160 is divided into first and second lower elastic members 160-1 and 160-2 so that power of different polarities can be applied and transmitted to the first coil 120. can be

In addition, each of the first and second lower elastic members 160-1 and 160-2 may further include a 2-4th frame connection part 163-4. The 2-4th frame connection part 163-4 may connect the coil frame 164 and the second inner frame 161-2.

At least one of the 2-1 to 2-4 frame connection parts 163-1, 163-2, 163-3, and 163-4 described above may be bent at least once to form a pattern having a predetermined shape. . In particular, the bobbin 110 moves up and/or lowers in a first direction parallel to the optical axis through position change and micro-deformation of the 2-1 and 2-3 frame connection parts 163-1 and 163-3. This can be elastically supported.

According to an embodiment, as illustrated, each of the first and second lower elastic members 160 - 1 and 160 - 2 may further include a second protruding frame 165 . The second protruding frame 165 is formed to protrude from the 2-2 frame connecting portion 163 - 2 and is a portion to which the conducting member 154 can be fixedly coupled. The upper elastic member 160 may further include fifth and sixth upper elastic members 150 - 5 and 150 - 6 electrically separated from each other.

Each of the fifth and sixth upper elastic members 150 - 5 and 150 - 6 may include a first protruding frame 155 to which the conducting member 154 is fixedly coupled. Meanwhile, the conducting member 154 may be connected to the second protruding frame 165 , and a longitudinal direction thereof may be disposed in the first direction.

In addition, the first and second protruding frames 155 and 165 are disposed at positions corresponding to each other in the first direction so that both ends of the conducting member 154 are coupled and the longitudinal direction thereof is disposed in the first direction. can be

Meanwhile, the fifth and sixth upper elastic members 150 - 5 and 150 - 6 may be respectively connected to the support member 220 . That is, the fifth upper elastic member 150 - 5 may be connected to the fifth support member 220 - 5 , and the sixth upper elastic member 150 - 6 may be connected to the sixth support member 220 - 6 . .

At this time, each of the second protruding frames 165 may be integrally formed on the first and second lower elastic members 160-1 and 160-2, and likewise the fifth and sixth upper elastic members 150-5. , 150 - 6 , the first protruding frame 155 may be integrally formed. In addition, the upper end of the conducting member 154 may be fixedly coupled to the first protruding frame 155 , and the lower end of the conducting member 154 may be fixedly coupled to the second protruding frame 165 .

In this case, the first and second protruding frames 155 and 165 and the conducting member 154 may be fixedly coupled to each other using soldering, an electrically conductive adhesive, or the like. At this time, the first and second protruding frames 155 and 165 and the conducting member 154 have a conducting member 154 in each of the first and second protruding frames 155 and 165 in order to facilitate the solid coupling and coupling operation. A hole or groove into which can be inserted may be provided.

In this way, the first and second lower elastic members 160-1 and 160-2, respectively, and the fifth and sixth upper elastic members 150-5 and 150-6, respectively, are disposed in the first direction in their longitudinal direction. It can be mechanically and electrically connected by the conducting member 154 that is.

On the other hand, it is appropriate for the conducting member 154 to be formed of a flexible material or an elastic material that can be bent in a direction perpendicular to the longitudinal direction as the bobbin 110 moves in the second and third directions.

In this case, the lower ends of the plurality of support members 220 may be fixedly coupled to the circuit board 250 . Alternatively, the lower ends of the plurality of support members 220 may be fixedly coupled to the second coil. Accordingly, the lower end of the bobbin may be fixed to the circuit board 250 or the second coil 230 so as not to move even when the bobbin moves in the second and third directions.

In addition, according to another embodiment, unlike shown in FIG. 12 , a metal piece (not shown) to be inserted or attached to the housing 140 may be further provided. In this case, for example, the 1-2th outer frame 158 and the 2-2nd frame connection part 163-2 may be connected to each other by a metal piece. In this case, the first and second protruding frames 155 and 165 and the conducting member 154 shown in FIG. 12 may be omitted.

Meanwhile, the 1-2 th outer frame 158 may further include a 2-2 th through hole 157 like the 1-1 outer frame 152b.

According to one embodiment, the first to sixth upper elastic members (150-1, 150-2, 150-3, 150-4, 150-5, 150-6) of the 1-1 outer frames (152a, 152b) ) may be disposed to face each other in a diagonal direction, and the first and second outer frames 158 may be disposed to face each other in a diagonal direction. That is, the 1-1 outer frame 152a of the first upper elastic member 150-1 and the 1-1 outer frame 152a of the third upper elastic member 150-3 face each other in a diagonal direction. can be placed. In addition, the 1-1 outer frame 152b of the second upper elastic member 150-2 and the 1-1 outer frame 152b of the fourth upper elastic member 150-4 face each other in a diagonal direction, can be placed. In addition, the 1-2 outer frame 158 of the fifth upper elastic member 150-5 and the 1-2 outer frame 158 of the sixth upper elastic member 150-6 face each other in a diagonal direction. can be placed.

On the other hand, the first and second lower elastic members (160-1, 160-2) are the fifth and sixth upper elastic members (150-5, 150-6) connected to the plurality of support members 220, the first and Power is supplied from the circuit board 250 through the conducting member 154 connecting the second lower elastic members 160-1 and 160-2 and the fifth and sixth upper elastic members 150-5 and 150-6. It can be seen that received and provided to the first coil 120 . That is, the first lower elastic member 160 - 1 is connected to the circuit board 250 through the conducting member 154 , the sixth upper elastic member 160 - 6 , and the sixth supporting member 220 , and the second The lower elastic member 160 - 2 may be connected to the circuit board 250 through the conducting member 154 , the fifth upper elastic member 160 - 5 , and the fifth supporting member 220 - 5 .

Referring to FIG. 11 , a plurality of first lower support protrusions 117 are formed to protrude from the lower surface of the bobbin 110 , so that the second inner frames 161-1 and 161-2 of the lower elastic member 160 and the bobbin are formed. (110) can be coupled and fixed. A plurality of second lower support protrusions 145 are protruded from the lower surface of the housing 140 to combine the second outer frames 162-1 and 162-2 of the lower elastic member 160 with the housing 140 and can be fixed

In this case, the number of the second lower support protrusions 145 may be greater than the number of the first lower support protrusions 117 . This is because the length of the second frame connection part 163 - 2 of the lower elastic member 160 is longer than the length of the first frame connection part 163 - 1 .

As described above, since the lower elastic member 160 has a structure divided into two, the number of the first and second lower support protrusions 117 and 145 is sufficient as the number of the first upper support protrusions 143 . By forming a large amount, it is possible to prevent a lifting phenomenon that may occur when the lower elastic member 160 is separated.

If the lower elastic member 160 is configured as a single body rather than a divided structure, it is not necessary to form as many first and second lower support protrusions 117 and 145 as the first upper support protrusion 143 . This is because, with only a small number of the first and second lower support protrusions 117 and 145 , the lower elastic member 160 can be stably coupled to the housing 140 .

However, as in the embodiment, when the lower elastic member 160 is separated into the first and second lower elastic members 160-1 and 160-2 so that they are not electrically connected to each other, the separated first and second In order to fix the lower elastic members 160 - 1 and 160 - 2 , a sufficient number of first and second lower support protrusions 117 and 145 may be provided. Accordingly, it is possible to prevent incomplete coupling between the first and second lower elastic members 160 - 1 and 160 - 2 and the housing 140 .

12, according to the embodiment, the first lower support protrusion (161-1, 161-2) in the second inner frame (161-1, 161-2) of each of the first and second lower elastic members (160-1, 160-1) The third through hole 161a may be formed in a shape corresponding to the position corresponding to the 117 . In this case, the first lower support protrusion 117 and the third through hole 161a may be fixed by thermal fusion, or may be fixed with an adhesive member such as epoxy.

In addition, in the first and second lower elastic members 160-1 and 160-2, respectively, in the second outer frames 162-1 and 162-2, the fourth lower support protrusion 145 and the second lower support protrusion 145 are located. A through hole 162a may be formed. In this case, the second lower support protrusion 145 and the fourth through hole 162a may be fixed by thermal fusion or an adhesive member such as epoxy.

In addition, a distance between the plurality of first and second lower support protrusions 117 and 145 may be appropriately arranged within a range capable of avoiding interference with neighboring components. That is, each of the first and second lower support protrusions 117 and 145 may be arranged at regular intervals symmetrically with respect to the center of the bobbin 110 .

Each of the above-described upper elastic member 150 and lower elastic member 160 may be provided as a leaf spring, but the embodiment is not limited to the material of the upper and lower elastic members 150 and 160 .

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

For example, first, the second inner frames 161-1 and 161-2 of the bobbin 110 and the lower elastic member 160 are assembled, and secondly, the second inner frames 161-1 and 161-2 of the housing 140 and the lower elastic member 160 are assembled. 2 When assembling the outer frames 162-1 and 162-2, the first lower support protrusion 117 of the bobbin 110 and the third through hole 161a coupled to the teeth 117 and the first of the housing 140 2 The lower support protrusion 145 and the fourth through hole 162a coupled to the tooth 145 may be heat-sealed and fixed. Third, when the first inner frame 151 of the upper elastic member 150 is assembled first, the elastic member contact portions 184-1, 184-2, 184-3, and 184-4 of the sensor substrate 180 and The first inner frame 151 of each of the first to fourth upper elastic members 150-1, 150-2, 150-3, and 150-4 may be heat-sealed and fixed. After that, when the 1-1 and 1-2 outer frames 152a, 152b, and 158 of the housing 140 and the upper elastic member 150 are fixed fourthly, the first upper side of the housing 140 is supported. The 2-2 through hole 157 coupled to the protrusion 143 may be bonded by applying an adhesive such as epoxy. However, this assembly sequence may be changed, that is, the first to third assembly processes are thermal fusion, and bonding may be performed at the time of fixing in the last fourth step. This can be accompanied by deformation such as warping during thermal fusion, and this can be supplemented by bonding in the final stage.

In the case of the above-described embodiment, power is supplied to the first sensor 170 using the two electrically separated upper elastic members 160 , and the feedback signal output from the first sensor 170 is electrically separated from another. Power can be supplied to the first coil 120 by using the two upper elastic members 150 to transfer the power to the circuit board 250 , and using the two electrically separated lower elastic members 160 . However, the embodiment is not limited thereto.

That is, according to another embodiment, the roles of the plurality of upper elastic members 150 and the roles of the plurality of lower elastic members 160 may be interchanged. That is, power is supplied to the first coil 120 using two electrically separated upper elastic members 150 , and the first sensor 170 using two electrically separated lower elastic members 160 . power may be supplied to the , and the feedback signal output from the first sensor 170 may be transmitted to the circuit board 250 using the other two electrically separated lower elastic members 160 . Although not shown, this is apparent from the foregoing drawings.

Meanwhile, referring to FIGS. 3 , 6 , 7 , 10 and 11 , a plurality of third stoppers 149 may protrude from the side surface of the housing 140 . The third stopper 149 is for preventing the cover member 300 and the housing 140 body from collided with each other when the first lens driving unit moves in the second and third directions, It is possible to prevent the side surface from directly colliding with the inner surface of the cover member 300 . As illustrated, two third stoppers 149 are arranged at regular intervals on each of the outer surfaces of the housing 140 , but the embodiment is not limited to the position and number of the third stoppers 149 .

Although not shown, a fourth stopper may be additionally disposed below the housing 140 . The fourth stopper may be formed to protrude from the lower surface of the housing 140 . The fourth stopper may prevent the bottom surface of the housing 140 from colliding with the base 210 and/or the circuit board 250 to be described later. In addition, the fourth stopper may maintain a state spaced apart from the base 210 and/or the circuit board 250 by a predetermined distance during an initial state and a normal operation. Through this configuration, the housing 140 may be spaced apart from the base 210 in the lower side and spaced apart from the cover member 300 in the upper part to maintain the height in the optical axis direction without up-and-down interference. Accordingly, the housing 140 may perform a shifting operation in the second and third directions.

The first lens driving unit according to the embodiment senses a position in a first direction that is an optical axis direction of the bobbin 110 or a direction parallel to the first direction by using the first sensor 170 , Movement can be precisely controlled. This may be possible by feeding back the position sensed by the first sensor 170 to the outside through the circuit board 250 .

On the other hand, according to one embodiment, the magnet 130 facing the first coil 120 to move the bobbin 110 in a first direction or a direction parallel to the first direction as the optical axis direction (hereinafter referred to as 'AF for In addition to the 'magnet'), a magnet (hereinafter, a 'sensing magnet') (not shown) facing the first sensor 170 may be separately disposed. In this case, the interaction between the AF magnet 130 and the first coil 120 may be disturbed by the sensing magnet. This is because a magnetic field may be induced by the sensing magnet. Therefore, so that the separately disposed sensing magnet does not interact with the AF magnet 130 or cause interaction with the AF magnet 130, the bobbin 110 does not tilt, the first sensor ( 170) may be disposed to face a separate sensing magnet. In this case, the first sensor 170 may be disposed, coupled, or mounted on the bobbin 110 , and the sensing magnet may be disposed, coupled, or mounted on the housing 140 . Alternatively, the first sensor 170 may be disposed, coupled, or mounted on the housing 140 , and the sensing magnet may be disposed, coupled, or mounted on the bobbin 110 .

According to another embodiment, instead of separately disposing the sensing magnet, the AF magnet may be used as a sensing magnet to move the bobbin 110 in a first direction or a direction parallel to the first direction as the optical axis direction. . For example, the first sensor 170 is disposed on the bobbin 110 without placing the first sensor 170 on the housing 140 so that the AF magnet 130 can also perform the role of the sensing magnet. It can be moved with (110). Therefore, when the magnet for AF and the magnet for sensing coexist, the problem caused by the interaction of the two magnets can be fundamentally solved. For example, the need for a magnetic field compensation metal (not shown) to minimize the interaction between the AF magnet and the sensing magnet may be eliminated.

Meanwhile, the first lens driving unit may further include various devices for improving the auto-focusing function of the first lens driving unit in addition to the first sensor 170 . In this case, a method or process of receiving power through the arrangement position of the device or the circuit board 250 and supplying a feedback signal to the circuit board 250 may be the same as that of the first sensor 170 .

Meanwhile, referring back to FIG. 2 , the second lens driving unit is a lens driving unit for image stabilization as described above, and includes a first lens driving unit, a base 210 , a plurality of support members 220 , and a second coil 230 . ), the second sensor 240 and the circuit board 250 may be included.

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

13 is an upper elastic member 150 , a lower elastic member 160 , a support member 220 , a energizing member 154 , a circuit board 250 , a bobbin 110 and a first coil 120 according to the embodiment; A front view of the bonding is shown.

The conducting member 154 may have a shorter length than the supporting member 220 . That is, the first length L1 corresponding to the length of the conducting member 154 measured from the lower surface of the upper elastic member 150 to the upper surface of the lower elastic member 160 is from the lower surface of the upper elastic member 150 . The second length corresponding to the length of the support member 220 measured up to the top surface of the circuit board 250 may be shorter than the second length.

The lower end of the conducting member 154 is fixedly coupled to the lower elastic member 160, the lower end of the supporting member 220 is inserted or coupled to the circuit board, and a constant space between the lower elastic member 160 and the circuit board is fixed. Because there is a separation distance.

Meanwhile, the first length L1 may be appropriately selected in consideration of the ease of assembly of the lens driving device and the size of the bobbin 110 . Accordingly, the first length L1 may be provided in a range of 0.1 mm to 1 mm, and more preferably, may be provided in a range of 0.3 mm to 0.5 mm.

In the embodiment, the upper elastic member 150 and the lower elastic member 160 are mechanically and electrically connected to each other by the energizing member 154 so that the lower elastic member 160 is a structure in which current is applied from the circuit board 250 . have

When the lower elastic member 160 is directly connected to the support member 220 , the lower elastic member 160 is adjacent to the lower end of the support member 220 , which is a portion fixed to the circuit board 250 or the second coil 230 . is positioned, and when the bobbin 110 is driven in the second direction and the third direction, the support member 220 to which both the upper elastic member 150 and the lower elastic member 160 are coupled is performed in the second direction and the third direction. A strong driving force is required to bend.

However, in the embodiment, the support member 220 has a structure in which only the upper elastic member 150 is coupled, and the coupling portion is also fixed to the circuit board 250 or the second coil 230 from the bottom of the support member 220 . Since it is located at a relatively long distance, in order for the support member 220 to be bent in the second and third directions, a significantly smaller driving force is sufficient compared to the case in which the lower elastic member 160 is directly connected to the support member 220 . do.

Therefore, in the embodiment, when the bobbin 110 is driven in the second direction and the third direction due to the above-described structure, there is an effect of reducing the required driving force.

Accordingly, in the embodiment, the lens driving device has an effect of performing hand-shake correction with a small driving force. In addition, since excessive driving force is not applied to the support member 220 , durability of the lens driving device including the support member 220 can be increased.

14 is an exploded perspective view of the base 210 , the second coil 230 , and the circuit board 250 .

First, the base 210 of the second lens driving unit may have a substantially rectangular planar shape as illustrated in FIGS. 2 and 14 . When the cover member 300 is adhesively fixed to the base 210 , a step 211 may be formed so that an adhesive may be applied thereto as illustrated in FIG. 14 . At this time, the step 211 may guide the cover member 300 coupled to the upper side, and may be coupled such that an end of the cover member 300 is in surface contact. The step 211 and the end of the cover member 300 may be adhesively fixed and sealed by an adhesive or the like.

The base 210 may be disposed to be spaced apart from the first lens driving unit by a predetermined interval. A support portion 255 having a corresponding size may be formed on a surface of the base 210 facing the portion where the terminal 251 is formed of the circuit board 250 . The support part 255 is formed without a step 211 in a predetermined cross-section from the outer surface of the base 210 , so that the terminal surface 253 on which the terminal 251 is formed can be supported.

The edge of the base 210 has a second recess 212 . When the edge of the cover member 300 has a protruding shape, the protrusion of the cover member 300 may be coupled to the base 210 in the second recess 212 .

In addition, second seating grooves 215 - 1 and 215 - 2 in which the second sensor 240 can be disposed may be provided on the upper surface of the base 210 . According to the embodiment, a total of two second seating grooves 215-1 and 215-2 are provided, and the second sensor 240 is disposed in the second seating grooves 215-1 and 215-2, respectively, so that the housing The degree of movement of 140 in the second direction and the third direction may be detected. To this end, the angle formed by the imaginary lines connecting the second seating grooves 215-1 and 215-2 and the center of the base 210 is 90°, so that the two second seating grooves 215-1 and 215-2 ) can be placed.

A tapered inclined surface (not shown) may be formed on at least one surface of the second seating grooves 215-1 and 215-2. Epoxy injection for assembling the second sensor 240 may be configured to be performed more smoothly. In addition, a separate epoxy may not be injected into the second seating grooves 215-1 and 215-2, but the second sensor 240 may be fixed by injecting epoxy or the like. The second seating grooves 215 - 1 and 215 - 2 may be disposed at or near the center of the second coil 230 . Alternatively, the center of the second coil 230 may coincide with the center of the second sensor 240 . According to the embodiment, the second seating grooves 215 - 1 and 215 - 2 may be installed on the side of the base 210 .

A groove portion is formed at a position corresponding to the step 211 of the cover member 300 , and an adhesive or the like may be injected through the groove portion. At this time, the injected adhesive is set to have a low viscosity, so that the adhesive injected through the groove may permeate into the surface contact position of the step 211 and the end of the cover member 300 . As described above, the adhesive member applied to the groove fills a gap between the opposing surfaces of the cover member 300 and the base 210 through the groove, so that the cover member 300 is coupled to the base 210 while It may be configured to be sealed.

In addition, a seating portion (not shown) in which a filter is installed may be formed on the lower surface of the base 210 . Such a filter may be an infrared cut filter. However, the present invention is not limited thereto, and a filter may be disposed in a separate sensor holder under the base 210 . In addition, as will be described later, a sensor board on which an image sensor is mounted may be coupled to a lower surface of the base 210 to constitute a camera module.

Meanwhile, the plurality of support members 220 may be respectively disposed on the second side portion 142 of the housing 140 . For example, as described above, when the housing 140 has a polygonal planar shape, the number of the second side portions 142 of the housing 140 may be plural. If the lower inner side of the housing 140 has an octagonal bottom shape, the plurality of support members 220 may be disposed on the second side portion 142 of the eight side portions. For example, two support members 220 are disposed on each of the four second side portions 142 , so that a total of eight support members 220 may be provided.

Alternatively, in the housing 140 , only one support member 220 is disposed on each of the two second side portions 142 of the four second side portions 142 , and two support members 220 are disposed on each of the remaining two second side portions 142 . The support member 220 may be disposed to provide a total of six support members 220 .

The support member 220 forms a path for transmitting power required from the first sensor 170 and the first coil 120 as described above, and transmits a feedback signal output from the first sensor 170 to the circuit board ( 250) can be formed.

In addition, since the support member 220 serves to restore the housing 140 to its original position after moving in the second and third directions in the first lens driving unit, the same number of support members 220 in the diagonal direction. ), the elastic modulus (K) can be balanced. That is, when the housing 140 moves in the second and/or third directions that are planes perpendicular to the optical axis, the support member 220 is finely moved in the direction in which the housing 140 moves or in the longitudinal direction of the support member 220 . It can be elastically deformed. Here, the longitudinal direction may be a direction connecting the upper end and the lower end of each wire of the support member 220 . Then, the housing 140 can move in the second and third directions that are substantially perpendicular to the optical axis without a change in position with respect to the first direction, which is a direction parallel to the optical axis, thereby increasing the accuracy of handshake correction. This utilizes the characteristic that the support member 220 can be stretched in the longitudinal direction.

For example, as illustrated in FIG. 12 , the four first to fourth support members 220 - 1 , 220 - 2 , 220 - 3 , 220 - 4 of the eight sides of the housing 140 , 4 Each of the two second side portions 142 may be individually disposed to support the housing 140 by being spaced apart from the base 210 by a predetermined distance.

Each of the first to fourth support members 220-1, 220-2, 220-3, and 220-4 according to the embodiment is disposed on the second side portion 142 of the housing 140, respectively, and is installed symmetrically can be However, this is not limiting. That is, the shape and number of the plurality of support members 220 may be determined to be symmetrical to each other in a direction perpendicular to the first direction, for example, in the second and third directions. Considering the elastic modulus described above, the number of the support members 220 may be eight as described above.

In the above example, the support member 220 is implemented in the form of a suspension wire without a predetermined pattern, but the embodiment is not limited thereto. That is, according to another embodiment, the support member 200 may be formed in a plate shape having an elastically deformable portion (not shown).

Meanwhile, referring to FIG. 14 , the second coil 230 may include a fifth through hole 230a penetrating a corner portion of the circuit member 231 . The support member 220 may be connected to the circuit board 250 through the fifth through hole 230a.

In this case, the support member 220 may be inserted into the fifth through hole 230a to be fixedly coupled to the second coil 230 by soldering, a conductive adhesive, or the like. Meanwhile, as described above, the support member 220 may be fixedly coupled to the circuit board 250 .

The second coil 230 may be disposed to face the magnet 130 fixed to the housing 140 . For example, the second coil 230 may be disposed outside the magnet 130 . Alternatively, the second coil 230 may be installed to be spaced apart from each other by a predetermined distance below the magnet 130 .

According to the embodiment, as illustrated in FIG. 14 , a total of four second coils 230 may be installed on four sides of the circuit board 250 , but the present invention is not limited thereto. It is also possible to install only two, such as one for three directions, or four or more. In the case of an embodiment, a circuit pattern is formed in the shape of a second coil 230 on the circuit board 250, and an additionally separate second coil 230 may be disposed on the circuit board 250, but is not limited thereto. Only a separate second coil 230 may be disposed on the circuit board 250 without forming a circuit pattern in the shape of the second coil 230 on the circuit board 250 . Alternatively, the second coil 230 may be configured by winding a wire in a donut shape, or the second coil 230 may be formed in an FP coil shape and electrically connected to the circuit board 250 .

The circuit member 231 including the second coil 230 may be installed on the upper surface of the circuit board 250 disposed above the base 210 . However, the present invention is not limited thereto, and the second coil 230 may be disposed in close contact with the base 210 , may be disposed spaced apart from the base 210 , may be formed on a separate substrate, and may be laminated and connected to the circuit board 250 . have.

As described above, by the interaction between the magnet 130 and the second coil 230 disposed to face each other, the housing 140 moves in the second and/or third direction to perform handshake correction. To this end, the above-described first to fourth support members 220 may support the housing 140 to be movable in second and third directions perpendicular to the first direction with respect to the base 210 .

Meanwhile, the second sensor 240 may detect a displacement of the first lens driving unit with respect to the base 210 in second and third directions orthogonal to the optical axis. To this end, the second sensor 240 may be disposed on the center side of the second coil 230 with the circuit board 250 interposed therebetween to detect the movement of the housing 140 . That is, the second sensor 240 is not directly connected to the second coil 230 , and the second coil 230 is on the upper surface of the circuit board 250 , and the second sensor 240 is on the lower surface of the circuit board 250 . can be installed. According to an embodiment, the second sensor 240 , the second coil 230 , and the magnet 130 may be disposed on the same axis.

The second sensor 240 may be provided as a Hall sensor, and any sensor capable of detecting a change in magnetic force may be used. As shown in FIG. 14 , a total of two second sensors 240 may be installed on the side of the base 210 disposed on the lower side of the circuit board 250 , and the mounted second sensor 240 is The second seating grooves 215-1 and 215-2 formed in the base 210 may be inserted and disposed.

The circuit board 250 may include sixth through-holes 250a1 and 250a2 through which the support member 220 can pass. The support member 220 may be electrically connected to a corresponding circuit pattern that may be disposed on the bottom surface of the circuit board 250 through the sixth through-holes 250a1 and 250a2 of the circuit board 250 through soldering or the like.

The circuit board 250 may further include a seventh through hole 250b. The second upper support protrusion 217 and the seventh through hole 250b of the base 210 may be coupled as shown in FIG. 14 and fixed by thermal fusion, or may be fixed with an adhesive member such as epoxy.

The circuit board 250 may further include a plurality of terminals 251 . A bent terminal surface 253 may be formed on the circuit board 250 . According to the embodiment, at least one terminal 251 may be installed on one bent terminal surface 253 of the circuit board 250 .

According to the embodiment, the first and second coils 120 and 230 and the first and second sensors 170 and 240 by receiving external power through a plurality of terminals 251 installed on the terminal surface 253 are applied. may be supplied, or a feedback signal output from the first sensor 170 may be output to the outside. The number of terminals formed on the terminal surface 253 on which the terminals 251 are installed may be increased or decreased according to the types of components that need to be controlled.

According to the embodiment, the circuit board 250 may be provided as an FPCB, but is not limited thereto, and the terminal configuration of the circuit board 250 is directly formed on the surface of the base 210 using a surface electrode method, etc. It is also possible

As described above, the circuit board 250 supplies power (or current) required by the first coil 120 and the first sensor 170 , and receives a feedback signal from the first sensor 170 to receive a bobbin It is possible to allow the displacement of 110 to be adjusted.

Meanwhile, the lens driving device according to the above-described embodiment may be used in various fields, for example, a camera module. For example, the camera module may be applied to a mobile device such as a mobile phone.

The camera module according to the embodiment may include a lens barrel coupled to the bobbin 110 , an image sensor (not shown), a circuit board 250 , and an optical system.

The lens barrel is the same as described above, and the circuit board 250 may form the bottom surface of the camera module from the portion where the image sensor is mounted.

In addition, the optical system may include at least one lens that transmits an image to the image sensor. In this case, an actuator module capable of performing an auto-focusing function and a hand-shake correction function may be installed in the optical system. The actuator module performing the auto-focusing function may be configured in various ways, and a voice coil unit motor is generally used. The lens driving apparatus according to the above-described embodiment may serve as an actuator module that performs both an auto-focusing function and a hand-shake correction function.

In addition, the camera module may further include an infrared cut filter (not shown). The infrared cut filter serves to block light in the infrared region from being incident on the image sensor. In this case, in the base 210 illustrated in FIG. 2 , an infrared cut filter may be installed at a position corresponding to the image sensor, and may be coupled to a holder member (not shown). In addition, the base 210 may support the lower side of the holder member.

A separate terminal member may be installed on the base 210 to conduct electricity with the circuit board 250 , and it is also possible to integrally form the terminal using a surface electrode or the like. Meanwhile, the base 210 may function as a sensor holder to protect the image sensor, and in this case, a protrusion may be formed in a downward direction along the side surface of the base 210 . However, this is not an essential configuration, and although not shown, a separate sensor holder may be disposed under the base 210 to perform its role.

According to the above configuration, it is possible to implement the auto-focusing operation and the hand-shake correction operation of the first and second lens driving units by sharing the magnet 130 .

In the case of the lens driving device and the camera module including the same according to the embodiment described above, the first sensor 170 is disposed, coupled, or mounted on the housing 140 or the bobbin 110, and the AF magnet 130 is provided. It can be shared as a magnet for a sensor, or a magnet for a sensor can be arranged separately. If the AF magnet 130 is shared as a sensor magnet, or the sensor magnet is disposed not to interact with the AF magnet 130, the sensor magnet does not affect the AF magnet 130. Tilt is not caused in the bobbin 110 , the accuracy of the feedback signal is improved, the number of parts is not increased, and the responsiveness can be improved by reducing the weight of the housing 140 . Of course, the magnet for auto-focusing and the magnet for image stabilization may be configured separately.

Although only a few have been described as described above in relation to the embodiments, various other forms of implementation are possible. The technical contents of the above-described embodiments may be combined in various forms unless they are incompatible with each other, and may be implemented in a new embodiment through this.

110: bobbin
120: first coil
130: magnet
140: housing
150: upper elastic member
154: energized absence
155: first protruding frame
160: lower elastic member
165: second protruding frame
170: first sensor
180: sensor board
210: base
220: support member
230: second coil
240: second sensor
250: circuit board
300: cover member

Claims (20)

a coil and a first magnet disposed to face each other;
a bobbin in which the coil is wound on an outer circumferential surface;
upper and lower elastic members respectively disposed above and below the bobbin;
a sensor for detecting displacement of the bobbin in a first direction;
a second magnet disposed to face the sensor;
a circuit board electrically connected to the sensor and the coil, respectively;
a plurality of support members electrically connecting each of the coil and the sensor to the circuit board;
The upper elastic member includes first to sixth upper elastic members separated from each other,
The lower elastic member includes first and second lower elastic members separated from each other,
The sensor is electrically connected to the circuit board through the first to fourth upper elastic members and some of the plurality of support members,
The coil is electrically connected to the circuit board through the first and second lower elastic members, the fifth and sixth upper elastic members, and the remainder of the plurality of support members. The lens driving device according to claim 1, wherein the first magnet and the second magnet are integrated. The lens driving apparatus of claim 2, wherein the sensor and the first magnet are disposed to face each other so that a virtual central horizontal line passing through the center of the sensor and perpendicular to the optical axis coincides with the upper tip of the first magnet. According to claim 1, comprising a housing for supporting the first magnet,
The housing may include first and second sides opposite to each other in a second direction intersecting the first direction;
third and fourth sides facing each other in a third direction intersecting the first and second directions, respectively;
a fifth side disposed between the first side and the second side;
a sixth side disposed between the second side and the third side;
a seventh side disposed between the third side and the fourth side; and
and an eighth side disposed between the fourth side and the first side. 5. The method of claim 4,
The first magnets are respectively disposed on the first to fourth sides,
The plurality of support members are respectively disposed on the fifth to eighth side portions. The lens driving device of claim 4 , wherein the first to fourth upper elastic members are respectively disposed on the first to fourth side portions. 5. The lens driving device according to claim 4, wherein each of the fifth to eighth sides includes a recess recessed inward than each of the first to fourth sides. The lens driving device according to claim 7, further comprising a damping member filled in the recess. 5. The lens driving device according to claim 4, comprising a stopper protruding outward of the housing from each of the first to fourth sides. According to claim 4, wherein each of the first to sixth upper elastic members and the first and second lower elastic members
at least one inner frame coupled to the bobbin;
at least one outer frame coupled to the housing; and
and a frame connection part connecting the at least one inner frame and the at least one outer frame. 5. The method of claim 4,
a base disposed to be spaced apart from the bottom of the housing; and
and a cover member disposed to be spaced apart from an upper side of the housing. The lens driving device according to claim 1, further comprising a sensor substrate on which the sensor is disposed. 13. The method of claim 12, wherein the sensor substrate is
a body on which the sensor is disposed;
first to fourth elastic member contact portions protruding from the body and respectively contacting the first to fourth upper elastic members; and
and a circuit pattern disposed on the body to electrically connect the sensor and the first to fourth elastic member contact parts. According to claim 1, wherein the shape and number of the plurality of support members are symmetrical to each other in the second direction and the third direction,
The first to third directions are orthogonal to each other. According to claim 1,
The fifth and sixth upper elastic members are symmetrically disposed in a direction perpendicular to the first direction with respect to a center of the bobbin. The lens driving device of claim 1, further comprising a stopper protruding from an outer circumferential surface of the bobbin in a circumferential direction. housing;
a bobbin disposed inside the housing and having a coil wound around an outer circumferential surface thereof;
a plurality of upper elastic members spaced apart from each other on each of the housing and the bobbin;
a lower elastic member disposed under each of the housing and the bobbin;
a sensor for detecting the displacement of the bobbin in the optical axis direction;
a magnet disposed to face the sensor;
and a circuit board connected to the sensor through some of the plurality of upper elastic members and connected to the coil through the remaining ones of the plurality of upper elastic members and the lower elastic member. housing;
a bobbin disposed inside the housing and having a coil wound thereon;
an elastic member disposed above and below each of the housing and the bobbin;
a sensor for detecting the displacement of the bobbin in the optical axis direction; and
and a circuit board connected to the sensor and the coil. The lens driving device according to any one of claims 1 to 18; and
A camera module containing an image sensor. A mobile device comprising the camera module of claim 19 .

Images