KR20160000728A - Lens moving unit and camera module including the same - Google Patents

Abstract

A lens driving device in accordance with an embodiment, comprises: a bobbin which has at least one or more lens installed in an inner side, and a first coil installed in an outer circumferential surface; a first magnet arranged around the bobbin to be opposite to the first coil; a housing to support the first magnet; a first lens driving unit which includes upper and lower elastic members coupled with the bobbin and the housing to move the bobbin in a first direction parallel to an optical axis by interacting between the first magnet and the first coil; a base disposed with a predetermined gap with the first lens driving unit; a plurality of support member pairs to support the housing to be movable in the second and third directions which are orthogonal to the first direction with respect to the base; a second coil arranged to be opposite to the first magnet; and a second lens driving unit which includes a circuit board having the second coil to be installed thereon to move the housing in the second and third direction by interacting between the first magnet and the second coil. The plurality of support member pairs are arranged on a side of the housing, and each of the plurality of support member pairs is divided to include the first and second support members arranged adjacent to each other on the same side of the housing. Power is supplied to the first coil through the first support member pair, which is one of the plurality of support member pairs.

Description

[0001] The present invention relates to a lens driving apparatus and a camera module including the lens driving unit.

Embodiments relate to a lens driving apparatus and a camera module including the lens driving apparatus.

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

In the case of a camera module mounted on a small electronic device such as a smart phone, the camera module may be frequently hit during use, and the camera module may be slightly shaken due to user's hand motion during shooting. In view of this, in recent years, there has been a demand for development of a technique for additionally installing the camera shake preventing means on the camera module.

One such technique is to move the optical module along the x-axis and the y-axis corresponding to the plane perpendicular to the optical axis to correct the camera shake. In this technique, the optical system is moved and adjusted in a plane perpendicular to the optical axis for image correction, so that the structure is complicated and is not suitable for miniaturization.

In addition, in order to accurately focus the optical module, a separate sensor for sensing the position of the optical module moving to the optical axis is desired, and a method for electrically connecting the sensor to the circuit board is required.

The embodiment provides a lens driving apparatus that simplifies the process and makes it possible to more accurately adjust the focus of the stove in a simple configuration.

A lens driving apparatus according to an embodiment of the present invention includes: a bobbin having at least one lens disposed on an inner side and a first coil on an outer peripheral surface; A first magnet disposed on the periphery of the bobbin so as to face the first coil; A housing for supporting the first magnet; And a first lens driving unit for moving the bobbin in a first direction parallel to the optical axis by interaction between the first magnet and the first coil, the upper and lower elastic members being coupled to the bobbin and the housing. And a base disposed at a predetermined distance from the first lens driving unit; A plurality of support member pairs movably supporting the housing with respect to the base in a second direction and a third direction orthogonal to the first direction; A second coil disposed opposite the first magnet; And a second lens driving unit including a circuit board on which the second coil is mounted and moving the housing in the second and third directions by an interaction between the first magnet and the second coil, Wherein the plurality of support member pairs are disposed on a side surface of the housing and each of the plurality of support member pairs includes first and second support members which are separated from each other to be disposed adjacent to the same side of the housing, Power can be supplied to the first coil through the first pair of support members, which is one of the pair of support members.

A plurality of side surfaces of the housing include a plurality of first surfaces provided at corners where a plurality of the first magnets are installed; And a second surface interconnected by the plurality of first surfaces, the second surface being formed in a plane having a predetermined depth and each of the plurality of pairs of support members being disposed.

Wherein the upper elastic member includes first and second upper elastic members that are separated from each other, wherein the first and second upper elastic members are connected to each other while facing the first and second support members of the first pair of support members, So that the power can be supplied to the first coil.

Wherein each of the first and second upper elastic members has an inner frame coupled with the bobbin; An outer frame coupled with the housing; A frame connector connecting the inner frame and the outer frame; And a support member contact protruding from the outer frame and opposed to the first or second support member of the first pair of support members.

The first lens driving unit includes: a first sensing sensor supported by the housing and detecting a position of the bobbin in the first direction; And a second magnet attached to an outer circumferential surface of the bobbin to face the first sensing sensor. The second magnet may be disposed between a plurality of the first magnets spaced apart in the circumferential direction of the bobbin. The first sensing sensor may be inserted into the housing and supported by the housing.

Wherein the lower elastic member includes first and second lower elastic members that are separated from each other, and a first pin, which is a part of the plurality of fins of the first sensing sensor, includes a second pair of support members, And a second pin of the plurality of pins of the first sensing sensor is connected to the circuit board through a third pair of the first and second lower elastic members and a third one of the plurality of pairs of support members, To the circuit board.

Each of the first and second lower elastic members includes an inner frame coupled with the bobbin, an outer frame coupled with the housing, A frame connector connecting the inner frame and the outer frame; And at least one sensor contact protruding from the outer frame to be contactable with the second pin of the first sensing sensor and to be contactable with the third pair of support members.

The pair of second support members and the pair of third support members may be disposed opposite to each other.

The first lens driving unit may further include a magnetic field compensating metal disposed on an outer circumferential surface of the bobbin symmetrical to the second magnet with respect to a center of the bobbin.

The first and second support members may have a shape symmetrical to each other in a direction perpendicular to the first direction.

Each of the first and second support members includes an upper terminal portion coupled with an upper end portion of the second surface of the housing; At least one elastic deforming portion extending in the longitudinal direction from the upper terminal portion and having a shape bent at least once more; And a lower terminal portion extending from the at least one elastic deformation portion and coupled with the base.

In the pair of first support members, the upper terminal portion of the first support member is electrically connected to the first upper elastic member, and the upper terminal portion of the second support member is electrically connected to the second upper elastic member .

In the pair of second support members, the upper terminal portion of the first support member is connected to the 1-1 pin, which is one of the first pins of the first sensing sensor, and the upper terminal portion of the second support member is connected to the And may be connected to the other one of the first pins of the first sensing sensor.

And a second 2-1 pin which is one of the second pins of the first sensing sensor is connected to one side of the first lower elastic member and a second 2-2 pin which is another one of the second pins is connected to the second lower elasticity member, And in the third pair of support members, the first support member may be connected to the other side of the first lower elastic member, and the second support member may be connected to the other side of the second lower elastic member.

The circuit board may include a pad portion connectable with the lower terminal portion of each of the plurality of pairs of support members.

A camera module according to another embodiment includes an image sensor; A printed circuit board on which the image sensor is mounted; And the lens driving device.

Since the first and second supporting members electrically separated from each other and the first and second upper elastic members are opposed to each other on the same plane of the housing, the lens driving apparatus according to the embodiment of the present invention can reduce the time required for the soldering process The manufacturing process time can be shortened,

It is possible to divide one supporting member facing each side of the housing into two, divide the lower elastic member into two, connect the first sensing sensor to the circuit board by using the divided supporting member and the divided lower elastic member Therefore, since a separate structure for the first sensing sensor is not required, the first sensing sensor 170 for accurately controlling the position of the bobbin can be added at low cost,

And the value detected by the added first sensing sensor is fed back so that the focus of the lens can be accurately adjusted.

1 is a schematic perspective view of a lens driving apparatus according to an embodiment.
2 is an exploded perspective view of the lens driving apparatus illustrated in Fig.
FIG. 3 is a perspective view of a lens driving apparatus according to an embodiment in which the cover member illustrated in FIGS. 1 and 2 is removed.
FIG. 4 is a perspective view of a lens driving apparatus according to an embodiment in which a bobbin, a first coil, a first magnet, a first sensing sensor, and a second magnet are coupled.
FIG. 5 is a plan view in which a bobbin, a first magnet, a first sensing sensor, a second magnet, and a metal for magnetic field compensation are combined in the lens driving apparatus according to the embodiment.
6 is an exploded perspective view of the housing and the first sensing sensor according to the embodiment.
7 is a rear perspective view of the housing according to the embodiment.
FIG. 8 is a rear perspective view of a bobbin, a first mark net, a housing, a lower elastic member, and a plurality of support member pairs according to the embodiment.
9 is a perspective view of the upper elastic member according to the embodiment.
10 is a perspective view of the lower elastic member according to the embodiment.
11 is a cross-sectional view taken along the line II 'shown in FIG.
12 is a partially assembled perspective view of a second coil, a circuit board and a base according to the embodiment.
13 is an exploded perspective view of a second coil, a circuit board and a base according to the embodiment.
14 shows a front view of each of a plurality of pairs of support members according to the embodiment.
15 shows a perspective view of a circuit board according to an embodiment.
Fig. 16 is a perspective view showing an embodiment of the lower elastic member, the first to fourth support member pairs, and the circuit board alone in the lens driving apparatus illustrated in Fig. 3;

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings in order to facilitate understanding of the present invention. However, the embodiments according to the present invention can be modified into various other forms, and the scope of the present invention should not be construed as being limited to the embodiments described below. Embodiments of the present invention are provided to more fully describe the present invention to those skilled in the art.

In the description of the embodiment according to the present invention, in the case of being described as being formed on the "upper" or "on or under" of each element, on or under includes both elements being directly contacted with each other or one or more other elements being indirectly formed between the two elements. Also, when expressed as "on" or "on or under", it may include not only an upward direction but also a downward direction with respect to one element.

It is also to be understood that the terms "first" and "second," "upper / upper / upper," and "lower / lower / lower" But may be used only to distinguish one entity or element from another entity or element, without necessarily requiring or implying an order.

The thickness and size of each layer in the drawings are exaggerated, omitted, or schematically shown for convenience and clarity of explanation. Also, the size of each component does not entirely 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 explanation, the lens driving apparatus according to the embodiment is described using the Cartesian coordinate system (x, y, z), but may be described using another coordinate system, and the embodiment is not limited to this. In the drawings, the x-axis and the y-axis indicate directions perpendicular to the z-axis, which is the optical axis direction, the z-axis direction as the optical axis direction is referred to as a first direction, the x-axis direction is referred to as a second direction, The axial direction can be referred to as a 'third direction'.

The "camera-shake correction device" applied to a small-sized camera module of a mobile device such as a smart phone or a tablet PC is to prevent the outline of the captured image from being formed due to the vibration caused by the hand- ≪ / RTI >

The "auto focusing device" is a device that automatically focuses an image of a subject on an image sensor surface. The camera shake correcting device and the auto focusing device may be configured in various manners. In the lens driving device according to the embodiment, the optical module composed of at least one lens is moved in a first direction parallel to the optical axis, It is possible to perform the camera shake correcting operation and / or the auto focusing operation by moving with respect to the surface formed by the second and third directions perpendicular to the optical axis.

Fig. 1 shows a schematic perspective view of a lens driving apparatus according to an embodiment, and Fig. 2 shows an exploded perspective view of the lens driving apparatus illustrated in Fig.

Referring to FIGS. 1 and 2, the lens driving apparatus according to the embodiment may include a first lens driving unit 100, a second lens driving unit 200, and a cover member 300. Here, the first lens driving unit 100 performs the role of the above-described auto focusing device, and the second lens driving unit 200 can perform the role of the above-described shaking motion correcting device.

The cover member 300 may be provided in a substantially box shape and may cover the first and second lens driving units 100 and 200.

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

The first lens driving unit 100 includes a bobbin 110, a first coil 120, a first magnet 130, a housing 140, a top elastic member 150, and a bottom elastic member 160. [ . ≪ / RTI > The first lens driving unit 100 may further include a first sensing sensor 170 and a second magnet 180. The first lens driving unit 100 may further include a metal 182 for magnetic field compensation.

2, although a plurality of support member pairs 220 are shown as belonging to the first lens drive unit 100, the plurality of support member pairs 220 functionally include a second lens drive unit 200). The support member pair 220 will be described later in detail when the second lens driving unit 100 is described.

4 is a perspective view of a lens driving apparatus according to an embodiment in which a bobbin 110, a first coil 120, a first magnet 130, a first sensing sensor 170, and a second magnet 180 are coupled, .

5 is a schematic view of a lens driving apparatus according to an embodiment in which a bobbin 110, a first magnet 130, a first sensing sensor 170, a second magnet 180, and a magnetic field compensating metal 182 are combined Fig.

Referring to the drawings, the bobbin 110 may be installed in the inner space of the housing 140 such that it can reciprocate in a direction parallel to the first direction which is the optical axis direction. A 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 first magnet 130 can perform electromagnetic interaction. To this end, the first magnet 130 may be disposed opposite the first coil 120 at the periphery of the bobbin 110.

Further, when the bobbin 110 is raised and / or lowered in a first direction parallel to the optical axis to perform the auto focusing function, the bobbin 110 can be elastically supported by the upper and lower elastic members 150 and 160.

(Not shown) in which at least one lens can be installed on the inner side (i.e., the inner side) of the bobbin 110 although not shown. The lens barrel may be installed inside the bobbin 110 in various ways. For example, female threads may be formed on the inner circumferential surface of the bobbin 110, male thread corresponding to female threads may be formed on the outer circumferential surface of the lens barrel, and they may be coupled to the bobbin 110 through the lens barrel by screwing them. Examples are not limited to these.

According to another embodiment, the lens barrel may be directly fixed to the inside of the bobbin 110 by a method other than screwing, or one or more lenses may be integrally formed with the bobbin 110 without a lens barrel. The lens coupled to the lens barrel may be composed of a single sheet or two or more lenses may be configured to form an optical system.

FIG. 6 is an exploded perspective view of the housing 140 and the first sensing sensor 170 according to the embodiment, and FIG. 7 is a rear perspective view of the housing 140 according to the embodiment.

The bobbin 110 may include a first stopper 111 and a second stopper (or winding protrusion) 112.

When the bobbin 110 moves in the first direction parallel to the optical axis to perform the auto-focusing function, the first stopper 111 may move to the body 110 of the bobbin 110, It is possible to prevent the upper surface from directly colliding with the inner surface of the cover member 300 shown in Fig.

Referring to FIG. 3, the first stopper 111 may also guide the installation position of the upper elastic member 150. 4, a plurality of first stoppers 111 may protrude upward at a first height h1, and at least four protrusions may be formed in the form of polygonal columns .

Also, as illustrated, the first stopper 111 may be provided in a symmetrical structure with respect to the center of the bobbin 110, and may be provided with an asymmetric structure in which interference with other components is excluded. In this case, as illustrated in FIG. 6, the housing 140 may include a first seating groove 146-1 formed at a position corresponding to the first stopper 111. As shown in FIG.

When the bobbin 110 moves in the first direction parallel to the optical axis for the auto-focusing function, the second stopper (or the winding boss) It is possible to prevent the body bottom surface of the bobbin 110 from directly colliding with the base 210 and the upper surface of the circuit board 250. [ In the case of FIG. 4, the second stopper 112 is illustrated as including two stoppers 112a and 112b, but the embodiment is not limited to the number of the second stoppers 112. FIG.

According to the embodiment, the second stopper 112 may be formed to protrude in the circumferential direction from the outer circumferential surface of the bobbin 110. In this case, the housing 140 illustrated in Fig. 6 may include a second seating groove 146-2 formed at a position corresponding to the second stopper 112. [

Referring to FIG. 6, when the first stopper 111 and the first bottom surface 146a-1 of the first seating groove 146-1 are in contact with each other at an initial position, Directional control in a coil motor (VCM: Voice Coil Motor). Alternatively, when the state in which the second stopper 112 and the second bottom surface 146a-2 of the second seating groove 146-2 are in contact with each other is configured as an initial position, the auto focusing function is performed in the conventional voice coil motor It may be controlled as unidirectional control. That is, the bobbin 110 rises when a current is supplied to the first coil 120, and the bobbin 120 moves down when the current is turned off.

However, if the first stopper 111 and the first bottom surface 146a-1 of the first seating groove 146-1 are spaced apart from each other by a predetermined distance, the auto focusing function can be realized by the conventional voice coil motor Such as bi-directional control at the < / RTI > Alternatively, if the position where the second bottom surface 146a-2 of the second stopper 112 and the second seating groove 146-2 is spaced apart from the initial position by a predetermined distance, Such as bi-directional control at the < / RTI > That is, the autofocusing function may be realized by moving the bobbin 110 in the upward or downward direction parallel to the optical axis. For example, when the forward current is applied, the bobbin 110 can move upward, and when the reverse current is applied, the bobbin 110 can move downward.

The first seating groove 146-1 of the housing 140 corresponding to the first stopper 111 may be concave. At this time, the second width w2 of the first seating groove 146-1 shown in Fig. 6 is formed so as to have a certain tolerance than the first width w1 of the first stopper 111 shown in Fig. 4 . Thus, rotation of the first stopper 111 in the first seating groove 146-1 can be restricted. The first stopper 111 can prevent the bobbin 110 from rotating, even if the bobbin 110 is subjected to a force in the direction of rotation about the optical axis, not in the direction of the optical axis. It goes without saying that the second stopper 112 may perform the role of the first stopper 111. [

8 shows a rear perspective view in which the bobbin 110, the first mark net 130, the housing 140, the lower elastic member 160, and the plurality of support member pairs 220 are coupled.

A plurality of upper support protrusions 113 as shown in FIGS. 3 and 4 protrude from the upper surface of the bobbin 110 and a plurality of lower support protrusions 114 as shown in FIG. As shown in Fig.

The plurality of upper support protrusions 113 may have a hemispherical shape as illustrated, or alternatively may have a cylindrical or prismatic shape. However, the embodiment is not limited to the shape of the upper support protrusion 113.

Fig. 9 shows a perspective view of the upper elastic member 150 according to the embodiment.

Referring to FIG. 9, the upper elastic member 150 may include a first upper elastic member 150a and a second upper elastic member 150b electrically separated from each other.

Each of the first and second upper elastic members 150a and 150b includes an inner frame 151 that can be engaged with the bobbin 110 and an outer frame 152 and an inner frame 151 that can be engaged with the housing 140. [ And a frame connecting portion 153 connecting the outer frame 152 with the frame connecting portion 153. The frame connection part 153 may be bent at least once to form a pattern of a predetermined shape. The bobbin 110 can be elastically supported in the upward and / or downward movement in the first direction parallel to the optical axis by the position change and the fine deformation of the frame connecting portion 153.

After the inner frame 151 and the outer frame 152 are coupled to the bobbin 110 and the housing 140 respectively, a pair of winding projections 112 (in which the both ends of the first coil 120 are wound) So that the first and second upper elastic members 150a and 150b can be supplied with power of different polarities from each other. In this way, the upper elastic member 150 can be divided into the first and second upper elastic members 150a and 150a so as to be able to receive power of different polarities.

The first upper elastic member 150a may further include a first support member contact portion 150a-1 and the second upper elastic member 150b may further include a second support member contact portion 150b-1. have. Each of the first and second support member contacts 150a-1 and 150b-1 may be formed so as to protrude from the outer frame 52. As illustrated in Fig. 9, these (150a-1, 150b-1) can protrude in the first direction which is the optical axis direction, but the embodiment is not limited to the protruding direction.

3 and 4, the plurality of upper support protrusions 113 can couple and fix the inner frame 151 of the upper elastic member 150 illustrated in FIG. 9 and the bobbin 110 . According to the embodiment, the first through hole 151a may be formed at a position corresponding to the upper side support protrusion 113 of the inner frame 151.

At this time, the upper support protrusion 113 and the first through hole 151a may be fixed by heat fusion or may be fixed with an adhesive such as epoxy.

Further, the distance between the plurality of upper support protrusions 113 can be appropriately arranged within a range in which interference with peripheral components can be avoided. That is, the upper supporting protrusions 113 may be arranged symmetrically with respect to the center of the bobbin 110 at regular intervals. Although the spacing between the upper supporting protrusions 113 is not constant, a certain imaginary line passing through the center of the bobbin 110 Or may be arranged to be symmetrical.

The upper elastic member 150 illustrated in FIG. 9 is formed of a first and a second upper and lower parts, respectively, as described above so as not to be electrically connected to each other in order to serve as a terminal for applying a current to the first coil 120. [ And may include elastic members 150a and 150b. As described above, in order to fix the divided first and second upper elastic members 150a and 150b, a sufficient number of the upper support protrusions 113 can be provided. Accordingly, the first and second upper elastic members 150a and 150b and the bobbin 110 can be prevented from being incompletely coupled.

10 shows a perspective view of the lower elastic member 160 according to the embodiment.

Referring to FIG. 10, the lower elastic member 160 according to the embodiment may include first and second lower elastic members 160a and 160b.

Each of the first and second lower elastic members 160a and 160b includes an inner frame 161 that can be engaged with the bobbin 110, an outer frame 162 that can be engaged with the housing 140, And a frame connecting portion 163 for connecting the outer frame 162 with the outer frame 162. The frame connection portion 163 may be bent at least once to form a pattern of a predetermined shape. The bobbin 110 can be elastically supported by the frame connection portion 163 in the first direction parallel to the optical axis by the change of the position of the frame connection portion 163 and the fine deformation.

The first lower elastic member 160a includes at least one first sensor contact portion 160a-1 and 160a-2 and the second lower elastic member 160b includes at least one second sensor contact portion 160b- 1, 160b-2). Although two first sensor contacts 160a-1 and 160a-2 and two second sensor contacts 160b-1 and 160b-2 are shown in the case of Fig. 10, the embodiment is limited to the number of sensor contacts It does not.

Each of the first sensor contact portions 160a-1 and 160a-2 and the second sensor contact portions 160b-1 and 160b-2 may have a shape protruding from the outer frame 162. 1, 160b-1, 160b-2, 160b-1, 160b-2 and 160c-2 are shown protruding from the outer frame 162 in the first direction, ) Are not limited to the respective shapes.

The lower elastic member 160 is divided into two so that the number of the lower support protrusions 114 is formed to be sufficiently larger than the number of the upper side support protrusions 113, It is possible to prevent lifting phenomenon that may be generated when the separator is separated.

If the lower elastic member 160 is formed as a body rather than a divided structure, it is not necessary to form as many lower support protrusions 114 as the upper support protrusions 113. This is because the lower elastic member 160 can be stably coupled to the bobbin 110 even if only a small number of the lower support protrusions 114 are used.

However, as in the embodiment, when the lower elastic member 160 is divided into first and second lower elastic members 160a and 160b spaced apart from each other to be electrically connected to each other, the first and second lower elastic members 160a and 160b, In order to fix the members 160a and 160b, a sufficient number of the lower support protrusions 114 can be provided. Therefore, the first and second lower elastic members 160a and 160b and the bobbin 110 can be prevented from being incompletely engaged.

Referring to FIG. 8, the lower support protrusion 114 may have a hemispherical shape like the upper support protrusion 113, but may have a cylindrical or prismatic shape. However, the embodiment is not limited to the shape of the lower support projection 114. The lower support protrusion 114 can couple and fix the inner frame 161 of the lower elastic member 160 and the bobbin 110. [

Instead of the first and second upper elastic members 150a and 150b, the first and second lower elastic members 160a and 160b insulated from each other and separated from each other may be used to apply a current to the first coil 120 It may serve as a terminal.

The reason why the lower elastic member 160 is divided as described above will be described in detail when the support member pair 220 is explained.

The second through hole 161a may be formed in the inner frame 161 of each of the first and second lower elastic members 160a and 160b at positions corresponding to the lower support protrusions 114. [ At this time, the lower support protrusions 114 and the second through holes 161a may be fixed by heat fusion or may be fixed with an adhesive member such as an epoxy or the like.

Further, the distance between the plurality of lower support protrusions 114 can be appropriately arranged within a range in which interference with peripheral components can be avoided. That is, the lower support protrusions 114 may be arranged at regular intervals symmetrically with respect to the center of the bobbin 110. [

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

4 and 5, the winding protrusions (or the second stoppers) 112 may protrude from the outer circumferential surface of the bobbin 110 on the upper side. The line of sight and the vertical line of the first coil 120 can be respectively wound on the winding projections 112. [ The end of the first coil 120 may be connected to the upper surface of the upper elastic member 150 on the upper surface of the bobbin 110 adjacent to the winding protrusion 112 so as to be energized by a conductive connecting member such as solder S have.

4, two winding projections 112 may be disposed adjacent to each other at one side of the bobbin 110 and may be disposed at a position symmetrical with respect to the center of the bobbin 110 Pairs can be placed.

In addition, a locking protrusion 112a-1 is formed at an end of the winding protrusion 112 to prevent the first coil 120 from being detached or to guide the position of the first coil 120 . The engaging jaw 112a-1 may be formed to have a stepped-stepped structure at an end of the bobbin 110 while being formed such that the width of the winding protrusion 112 protruding from the outer circumferential surface of the bobbin 110 gradually increases.

Meanwhile, the bobbin 110, the housing 140, and the upper and lower elastic members 150 and 160 may be assembled through heat bonding and / or bonding using an adhesive or the like. At this time, it is possible to finish the fixing work by bonding using the adhesive after fixing by thermal fusion according to the assembling order.

For example, when the bobbin 110 and the inner frame 161 of the lower elastic member 160 are assembled first and the outer frame 162 of the housing 140 and the lower elastic member 160 are assembled for the second time, The lower support protrusion 114 of the bobbin 110 and the second through hole 161a coupled to the bobbin 110 and the third through hole 162a coupled with the lower frame support protrusion 145 of the housing 140 can be fixed by heat fusion . Third, when the bobbin 110 and the inner frame 151 of the upper elastic member 150 are assembled first, the upper support protrusion 113 of the bobbin 110 and the first through hole 151a coupled thereto are heat- Can be fixed. When the housing 140 and the outer frame 152 of the upper elastic member 150 are fixed for the last fourth time, the fourth through hole 152a coupled to the upper frame support protrusion 144 of the housing 140 ) Can be bonded and bonded by applying an adhesive such as epoxy or the like. However, this assembling sequence can be changed, that is, the assembly process from the first to the third is thermal fusion, and the final fourth bonding is performed. This can be accompanied by deformation such as twisting at the time of heat fusion, so that bonding can be supplemented in the last step.

The first coil 120 is wound on the outer circumferential surface of the bobbin 110 by a worker or a machine, and then the line of sight and the longitudinal line can be wound around the winding projections 112 and fixed. At this time, the position of the end of the first coil 120 wound on the winding projection 112 may vary depending on the operator.

The first coil 120 may be formed as a ring-shaped or angular coil block inserted into and coupled with the outer circumferential surface of the bobbin 110, but the present invention is not limited thereto. The first coil 120 may be formed on the outer circumferential surface of the bobbin 110 Direct winding can also be done. In any case, the line of sight and the vertical line of the first coil 120 can be wound and fixed on the winding projections 112, and the other structures are the same.

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

In this case, the portion of the first coil 120 formed in a straight line may be formed to be a surface corresponding to the first magnet 130. The surface of the first 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 surface of the corresponding first magnet 130 may be straight. If the first coil 120 is curved, the surface of the corresponding first magnet 130 may be curved Lt; / RTI > Also, even if the first coil 120 is curved, the surface of the corresponding first magnet 130 may be straight or vice versa.

The first coil 120 moves the bobbin 110 in a direction parallel to the optical axis to perform an autofocus function. When current is supplied, the first coil 120 can form an electromagnetic force through interaction with the first magnet 130 , The formed electromagnetic force can move the bobbin 110.

The first coil 120 may be configured to correspond to the first magnet 130 so that the first magnet 130 is formed as a single body so that the entire surface facing the first coil 120 has the same polarity. The first coil 120 and the first magnet 130 may have the same polarity.

Alternatively, when the first magnet 130 is divided into two or more parts by a plane perpendicular to the optical axis so that the first coil 120 is divided into two or more faces, the first coil 120 is also divided The first magnet 130 may be divided into a number corresponding to the number of the first magnets 130.

The first magnet 130 may be installed at a position corresponding to the first coil 120. According to the embodiment, the first magnet 130 may be installed at an edge portion of the housing 140 as shown in FIG. The first magnet 130 may have a shape corresponding to a corner portion and may have a substantially trapezoidal shape. A surface of the first magnet 130 facing the first coil 120 may be formed to correspond to a curvature of a corresponding surface of the first coil 120 .

The first magnet 130 may be formed as a single body, and in the embodiment, the N pole 134 and the S pole 132 may be disposed on the opposing surface of the first coil 120 and the outer surface, respectively . However, the present invention is not limited to this, and it is also possible to configure the other way around.

At least two first magnets 130 may be provided, and four magnets 130 may be provided according to the embodiment. At this time, the first magnet 130 may have a substantially trapezoidal shape as illustrated in FIG. 5, or alternatively may be provided in a triangular shape.

However, the surface facing the first coil 120 may be formed as a straight line, but the present invention is not limited thereto and may be a curved line having a corresponding curvature when the corresponding surface of the first coil 120 is curved . With this configuration, the distance from the first coil 120 can be kept constant. In the case of the embodiment, one at each of four corners of the housing 140 may be provided. However, the present invention is not limited thereto, and only one of the first magnet 130 and the first coil 120 may be planar and the other may be curved. Or the curved surfaces of the first coil 120 and the first magnet 130 may be curved so that the curvatures of the facing surfaces of the first coil 120 and the first magnet 130 are the same .

5, if the plane of the first magnet 130 is a trapezoidal shape, a pair of the first magnets 130 is arranged in parallel in the second direction, and the other pair is parallel in the third direction . According to such an arrangement structure, it is possible to control the movement of the housing 140 for correcting camera shake, which will be described later.

The housing 140 may have a polygonal planar shape and, according to an embodiment, may have an octagonal planar shape as illustrated in Figs. 6 and 7. Thus, the housing 140 may include a plurality of sides. For example, if the planar shape is octagonal, eight sides may be included. The plurality of side surfaces may be divided into a first surface 141 and a second surface 142.

The first surface 141 may include a surface on which the first magnet 130 is mounted and the second surface 142 may include a surface on which the pair of support members 220 to be described later is disposed. To this end, the second surface 142 may be formed as a plane having a predetermined depth, with the plurality of first surfaces 141 connected to each other.

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

The first magnet 130 may be fixed to the magnet seating portion 141a with an adhesive, but 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 mounting hole may be formed in which a part of the first magnet 130 can be exposed or fitted.

The first surface 141 may be disposed parallel to the side surface of the cover member 300. Also, the first surface 141 may be formed to have a larger surface than the second surface 142.

6 and 7, an escape groove 142a having a predetermined depth may be formed on the second surface 142 in a concave manner. The escape groove 142a will be described later in detail when the support member pair 220 is described.

In addition, a plurality of third stoppers 143 may protrude from the upper surface of the housing 140. The third stopper 143 is provided to prevent the cover member 300 from colliding with the body of the housing 140. When the external shock occurs, the upper surface of the housing 140 directly collides with the inner surface of the cover member 300 Can be prevented. 3, the third stopper 143 may also serve as a guide for separating the first and second upper elastic members 150a and 150b from each other.

A plurality of upper frame support protrusions 144 to which the outer frame 152 of the upper elastic member 150 is coupled may be formed on the upper side of the housing 140. The upper frame support protrusions 144 may be formed in a larger number than the number of the upper support protrusions 113. This is because the length of the outer frame 152 is longer than that of the inner frame 151. A fourth through hole 152a having a corresponding shape may be formed in the outer frame 152 of the upper elastic member 150 corresponding to the upper frame support protrusion 144. The upper frame support protrusion 144 may be formed And can be fixed in the four through holes 152a by adhesive or heat fusion.

As shown in FIG. 7, a plurality of lower frame support protrusions 145 to which the outer frame 162 of the lower elastic member 160 is coupled may protrude from the lower side of the housing 140. At this time, the lower frame support protrusions 145 may be formed in a larger number than the number of the lower support protrusions 114 described above. This is because the length of the outer frame 162 of the lower elastic member 160 is longer than the length of the inner frame 161.

A third through hole 162a having a shape corresponding to the lower frame support protrusion 145 may be formed in the outer frame 162 of the lower elastic member 160 illustrated in Fig. 10 corresponding to the lower frame support protrusion 145 And can be fixed by adhesive or heat fusion at the third through hole 162a.

Although not shown, a fourth stopper may be additionally disposed on the lower side of the housing 140. The fourth stopper may protrude from the lower surface of the housing 140. The fourth stopper can prevent the bottom surface of the housing 140 from colliding with the base 210 and / or the circuit board 250, which will be described later. In addition, the fourth stopper may maintain a predetermined distance from the base 210 and / or the circuit board 250 during an initial state and a normal operation. The housing 140 is spaced apart from the base 210 in the downward direction and spaced apart from the cover member 300 at the upper side so as to maintain the height in the optical axis direction by the pair of support members 220 can do. Accordingly, the housing 140 may perform a shifting operation in the second and third directions, which are forward and backward left and right directions, in a plane perpendicular to the optical axis. This operation will be described later.

The first lens driving unit 100 according to the embodiment senses the position in the z-axis direction of the bobbin 110 in the direction of the optical axis and controls the position of the bobbin 110, And perform an operation of feeding back to the outside through the substrate 250. To this end, the first lens driving unit 100 may further include a first sensing sensor 170 and a second magnet 180.

The first sensing sensor 170 may be supported by the housing 140. To this end, a first sensing sensor seating groove 172 may be provided on a side surface of the housing 140. The first sensing sensor 170 may be disposed in the first sensing sensor seating groove 172 to sense the degree of movement of the bobbin 110 in the first direction. To this end, the first sensing sensor 170 may include a plurality of pins.

A tapered inclined surface (not shown) may be formed on at least one surface of the first sensor sensor mounting groove 172 so that epoxy injection or the like for assembling the first sensor 170 may be performed more smoothly . In addition, although no epoxy or the like may be injected into the first sensing sensor mounting groove 172, the first sensing sensor 170 may be fixed by injecting epoxy or the like. 5 and 6, the position of the first sensing sensor seating groove 172 may be disposed on the same line as the second magnet 180. [ Therefore, the center of the second magnet 180 and the center of the first sensing sensor 170 can be matched with each other.

For example, the first sensing sensor 170 may be inserted into and supported by the housing 140 as illustrated in FIG. 6, and unlike the illustrated example, an adhesive member such as an epoxy or double-sided tape may be used for the housing 140 And may be attached and supported.

The first sensing sensor 170 may be a hall sensor or any sensor capable of sensing a change in magnetic force.

4 and 5, the second magnet 180 may be attached to the outer circumferential surface of the bobbin 110 so as to face the first sensing sensor 170. According to an embodiment, the second magnet 180 may be disposed between a plurality of first magnets 130 spaced in the circumferential direction of the bobbin. This is to minimize the interference between the first magnet 130 and the second magnet 180. Further, the second magnet 180 may be disposed on the upper portion of the first coil 120 wound on the bobbin 110, but the embodiment is not limited thereto.

11 is a cross-sectional view taken along the line I-I 'shown in FIG. The illustration of the housing 140 is omitted for convenience of explanation.

When the second magnet 180 is disposed, the interaction between the first magnet 130 and the first coil 120 can be interrupted by the second magnet 180. This is because a magnetic field can be caused by the second magnet 180. Therefore, according to the embodiment, in order to minimize the interference of the interaction between the first magnet 130 and the first coil 120, the first lens driving unit 100 further includes a magnetic field compensating metal 182 .

5 and 11, the magnetic field compensating metal 182 may be disposed at a position symmetrical to the second magnet 180 on the outer circumferential surface of the bobbin 110. [ That is, interference of the interaction can be minimized only when the magnetic field compensating metal 182 and the second magnet 180 are located on the same line HL in the y-axis direction as the third direction.

According to the embodiment, the material of the magnetic field compensating metal 182 may be a metal. The metal for compensating the magnetic field 182 may be made of a material having magnetic properties, for example, a magnetic substance or a magnet.

In some cases, the first lens driving unit 100 may not include the first sensing sensor 170, the second magnet 180, and the magnetic compensation metal 182. Alternatively, the first lens driving unit 100 may further include various devices for improving the autofocusing function of the first lens driving unit 100, in addition to the first sensing sensor 170. In this case, the method or the process of supplying power to the circuit board 250 through the placement position of the device or the circuit board 250 may be the same as the first sensing sensor 170.

2, the second lens driving unit 200 includes a first lens driving unit 100, a base 210, a plurality of pairs of support members (pair A second coil 230, a second sensing sensor 240, and a circuit board 250. The second sensor 230 may include a first coil 220, a second coil 230, a second sensor 240,

The first lens driving unit 100 may have the above-described configuration, but may be replaced with an optical system that implements another type of auto focusing function in addition to the above-described configuration. That is, instead of using the voice coil motor type auto focusing actuator, a single lens moving actuator or an optical module using a refractive index variable actuator may be used. That is, the first lens driving unit 100 can be any optical actuator capable of performing the auto focusing function. However, the first magnet 130 needs to be installed at a position corresponding to the second coil 230, which will be described later.

12 is a partial perspective view of the second coil 230, the circuit board 250 and the base 210. FIG. 13 is an exploded perspective view of the second coil 230, the circuit board 250 and the base 210. FIG. .

First, the base 210 of the second lens driving unit 200 may have a substantially rectangular planar shape as illustrated in FIG. 2, and a plurality of pairs of support members 220 may be fixed on a straight line. When the cover member 300 is adhered and fixed to the base 210, the step 211 may be formed as illustrated in FIGS. 12 and 13 so that the adhesive can be applied. At this time, the bottom surface of the step 211 can be in surface contact with the end of the cover member 300.

The base 210 may be spaced apart from the first lens driving unit 100 by a predetermined distance. A supporting groove having a corresponding size may be formed on a surface of the base 210 opposite to a portion where the terminal 251 of the circuit board 250 is formed. The support groove is recessed to a certain depth from the outer circumferential surface of the base 210 so that the terminal surface 253 formed with the terminal 251 can be controlled so as not to protrude outward or to protrude.

The step 211 can guide the cover member 300 coupled to the upper side and can also be coupled so that the end of the cover member 300 is in surface contact. The end portions of the step 211 and the cover member 300 can be adhesively fixed and sealed with an adhesive or the like.

A support member receiving groove 214 into which a plurality of pairs of support members 220 can be inserted may be formed at an upper portion of the upper surface of the base 210. An adhesive may be applied to the support member seating groove 214 to fix the plurality of support member pairs 220 so as not to move. The ends of a plurality of pairs of support members 220 may be inserted or disposed in the support member receiving grooves 214 and may be fixed with an adhesive or the like. A plurality of support member seating grooves 214 may be formed on each of the straight sides on which the plurality of support member pairs 220 are provided and the support member seating grooves 214 may have a substantially rectangular shape Can be provided as a home.

13, two supporting member receiving grooves 214 may be provided for each straight surface in the embodiment as shown in FIG. 13, which may be increased or decreased depending on the shape of the plurality of supporting member pairs 220, Or three or more may be formed. Two support member receiving grooves 214 are formed in each of the straight surface sides so that the ends of the first and second support members of the plurality of support member pairs 220 can be inserted or placed in the support member mount grooves 214, Respectively.

In addition, a second sensing sensor seating groove 215, on which the second sensing sensor 240 can be disposed, may be provided on the upper surface of the base 210. A second sensing sensor 240 is disposed in the second sensing sensor seating groove 215 so that the housing 140 is disposed in the second sensing sensor mounting groove 215, And the degree of movement in the third direction. To this end, two second sensor mounting recesses 215 may be disposed such that the angle formed by the second sensor mounting recesses 215 and virtual lines connecting the center of the base 210 is 90 degrees.

A tapered inclined surface (not shown) may be formed on at least one surface of the second sensor mounting groove 215. And epoxy injection for assembling the second sensing sensor 240 can be performed more smoothly. In addition, although no separate epoxy or the like may be injected into the second sensor mounting groove 215, the second sensing sensor 240 may be fixed by injecting epoxy or the like. The position of the second sensing sensor seating groove 215 may be located near the center or the center of the second coil 230. Alternatively, the center of the second coil 230 may be aligned with the center of the second sensing sensor 240. According to the embodiment, it is preferable that the second sensor mounting recess 215 is provided at a corner of the base 210. This is to minimize interference with the plurality of pairs of support members 220.

The second sensing sensor 240 may be disposed on the center side of the second coil 230 with the circuit board 250 therebetween. That is, the second sensing sensor 240 is not directly connected to the second coil 230, but the second coil 230 is disposed on the upper surface of the circuit board 250 and the second sensor 230 240 may be installed. According to the embodiment, the second sensing sensor 240, the second coil 230, and the first magnet 130 may be disposed on the same axis.

According to this configuration, the second coil 230 moves the housing 140 in the second and / or third directions through the interaction with the first magnet 130, so that the camera shake correction can be performed.

A groove portion is formed at a position corresponding to the step 211 of the cover member 300, and an adhesive or the like can be injected through the groove portion. At this time, the adhesive to be injected is set to have a low viscosity, so that the adhesive injected through the groove can penetrate the surface contact position of the step 211 and the end portion of the cover member 300. The adhesive member applied to the groove portion hits the gap between the facing surfaces of the cover member 300 and the base 210 through the groove portion so that the cover member 300 is coupled with the base 210 It can be configured to be sealed.

In addition, a seating part (not shown) on which a filter is installed may be formed on a 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. Also, as will be described later, a sensor substrate on which an image sensor is mounted may be coupled to a lower surface of the base 210 to form a camera module.

A plurality of pairs of support members 220 may be disposed on the plurality of side surfaces of the housing 140, respectively. In the embodiment, each of the plurality of support member pairs 220 is described as including two first and second support members, but each of the support member pairs 220 may include three or more support members.

For example, as described above, when the housing 140 has a polygonal planar shape, the number of the side surfaces of the housing 140 is plural. If the housing 140 has an octagonal planar shape as illustrated in FIGS. 6 and 7, a plurality of pairs of support members 220 may be disposed on corresponding ones of the octagonal sides. Alternatively, when the housing 140 has a quadrangular planar shape, the plurality of support member pairs 220 may be disposed on four sides, respectively.

Hereinafter, it is assumed that the number of the plurality of support member pairs 220 is four as illustrated in Figs. 2, 3, and 8, but the number of the support member pairs 220 may be three. That is, the first to fourth support member pairs 220-1, 220-2, 220-3, and 220-4 are disposed on the four second surfaces 142 of the housing 140, respectively.

14 shows a front view of each of a plurality of pairs of support members 220 according to the embodiment.

The first to fourth support member pairs 220: 220-1, 220-2, 220-3, and 220-4 are individually disposed on the four second surfaces 142 out of the eight sides of the housing 140 So that the housing 140 can be supported at a predetermined distance from the base 210. Each of the first to fourth support member pairs 220: 220-1, 220-2, 220-3, and 220-4 according to the embodiment is disposed on the second surface 142 of the housing, Member pairs can be installed symmetrically. However, the present invention is not limited to this, and it may be constituted by eight pairs of two each on each straight surface.

Each of the first to fourth support member pairs 220: 220-1, 220-2, 220-3, and 220-4 may include first and second support members 220a and 220b that are divided from each other. That is, the first support member pair 220-1 includes the first support member 220a-1 and the second support member 220b-1, and the second support member pair 220-2 includes the first support member 220a-1 and the second support member 220b- 3 and the second support member 220b-2, and the third support member pair 220-3 includes the first support member 220a-2 and the second support member 220b- And the fourth pair of support members 220-4 may include a first support member 220a-4 and a second support member 220b-4. Here, the first support member and the second support member may be installed adjacent to each other on the same side of the housing 140.

Each of the first supporting members 220a-1, 220a-2, 220a-3 and 220a-4 and the second supporting members 220b-1, 220b-2, 220b- , At least one elastic deformation portion (222, 223, 225) and a lower terminal portion (224). In addition, the first and second support members illustrated in Fig. 14 may have a shape that is symmetrical with respect to each other in a direction perpendicular to the z-axis direction (e.g., x-axis or y-axis direction) When the exemplified support member pair 220 corresponds to the first or fourth support member pair 220-1 or 220-4 illustrated in Figs. 3 and 8, the first and second support members are movable in the z-axis direction Axis direction orthogonal to the first and second support member pairs 220-2 and 220-3. In the case where the support member pair 220 illustrated in FIG. 14 corresponds to the second or third support member pair 220-2 and 220-3, And the second support member may be symmetrical in the x-axis direction perpendicular to the z-axis direction.

The bottom surface of the escape groove 142a of the housing 140 illustrated in Figs. 6 and 7 forms an opened opening so that the lower terminal portion 224 of the support member pair 220 interferes with the housing 140 Can be prevented. The upper side of the escape groove 142a can support the inside of the upper terminal portion 221 of the pair of support members 220 by forming the step portion 142b as illustrated in Fig.

3 and 14, the upper terminal portion 221 is a portion to be coupled with the upper end of the second surface 142 of the housing 140, and corresponds to the coupling protrusion 147 protruding from the second surface 142 The concave groove portion 147a can be formed at the position where the concave groove 147a is formed. The upper terminal portion 221 is a portion that can be electrically connected to the upper elastic member 150.

According to the embodiment, the first and second support member contacts 150a-1 and 150b-1 of the first and second upper elastic members 150a and 150b illustrated in FIG. 9 are connected to the first support member pair 220- 1 to the upper terminal portions 221 of the first and second supporting members 220a-1 and 220b-1, respectively. Here, the first pair of support members is a support member that is assigned a role to supply power to the first coil 120 among the first to fourth support member pairs 220-1, 220-2, 220-3, and 2204, ≪ / RTI > Thus, as the first and second support members 220a-1 and 220b-1 are disposed adjacent to the same side of the housing 140, the first and second upper and lower elastic members 150a and 150b, The second support member contacts 150a-1 and 150b-1 may also be disposed adjacent to each other.

3, the upper terminal portion 221 of the first support member 220a-1 and the first support member contact portion 150a-1 of the first pair of support members 220-1 are connected to the first contact CP1, They may be electrically connected to each other through soldering or the like. The upper terminal portion 221 of the second support member 220b-1 and the second support member contact portion 150b-1 of the first support member pair 220-1 are connected to each other at the second contact CP2 via soldering or the like And can be electrically connected. That is, in the first pair of support members 220-1, the upper terminal portion 221 of the first support member 220a-1 is electrically connected to the first upper elastic member 150a, and the second support member 220b -1 may be electrically connected to the second upper elastic member 150b. With this configuration, the first and second upper elastic members 150a and 150b, which are divided into two parts, are connected to the first and second support members 220a-1 and 220b-1 of the first pair of support members 220-1 (Or current) received from the circuit board 250 can be applied to the first coil 120. The first coil 120 and the second coil 120 are electrically connected to each other.

The upper terminal portions 221 of the first and second support members illustrated in Fig. 14 may include a first contact terminal portion 221a for supplying power to the first and second upper elastic members 150a and 150b have. Here, the first contact terminal portion 221a may be disposed at the upper edge of the upper terminal portion 221. [ However, the first contact terminal portion 221a may be provided separately from the upper terminal portion 221. [ The first contact terminal portion 221a of each of the first and second support members can receive positive (+) or negative (-) pole power.

The upper terminal portion 221 of the first and second support members may further include a second contact terminal portion 221b for connecting the first sensing sensor 170 to the circuit board 250. [ Here, the second contact terminal portion 221b may be disposed at the lower edge of the upper terminal portion 221. [ However, the second contact terminal portion 221a may be provided separately from the upper terminal portion 221. [

The at least one elastic deformation portion 222, 223, and 225 may extend in the longitudinal direction from the upper terminal portion 221 and be bent at least once to form a pattern of a certain shape. Here, the longitudinal direction may be a direction connecting the upper terminal portion 221 and the lower terminal portion 224 with each other.

According to an embodiment, the at least one resiliently deformable portion may include the first and / or second resiliently deformable portions 222, 223.

When the first elastic deformation portion 222 is provided in a zigzag shape through two or more bending, the second elastic deformation portion 223 may be formed correspondingly, but is not limited thereto. According to another embodiment, the second elastic deformation portion 223 may be omitted or provided in a different shape from the first elastic deformation portion 222. 14 is only an embodiment, and it is also possible to have various patterns such as a zigzag shape. At this time, the first and second elastically deformable portions 222 and 223 may be formed only by one without distinguishing them, or may be formed only in the form of a suspension wire without such a pattern. According to the embodiment, the linear portions of the first and second elastic deformation portions 222 and 223 may be formed to be substantially parallel to a plane perpendicular to the optical axis.

The first and second elastically deformable portions 222 and 223 are arranged in a direction in which the housing 140 moves or a length of a pair of supporting members when the housing 140 moves in a second and / It can be elastically deformed finely. In this case, the housing 140 can move in the second and third directions, which are planes substantially perpendicular to the optical axis, with almost no change in position in the first direction parallel to the optical axis, thereby improving the accuracy of the camera shake correction. This utilizes the characteristic that the elastic deformation portions 222 and 223 can be extended in the longitudinal direction.

In addition, the at least one elastic deformation portion may further include a connection portion 225. The connection portion 225 may be disposed in the middle of the first and second elastic deformation portions 222 and 223, but is not limited thereto and may be disposed in connection with one elastic deformation portion. The first and second elastically deformable parts 222 and 223 may be formed in a state where the connecting part 225 is interposed therebetween, or may be provided in corresponding shapes.

A plurality of holes (not shown) or grooves (not shown) may be formed in the connection part 225 to connect the connection part 225 to the connection part 225 through holes or grooves. And the housing 140 may be constituted by a UV damper or the like.

In the embodiment, the first and second elastic deformation portions 222 and 223 are shown as being disposed between the upper terminal portion 221 and the lower terminal portion 224, but the embodiment is not limited thereto. According to another embodiment, unlike the example illustrated in Fig. 14, each of the first and second support members may include one or more resilient deformations at both ends thereof.

The lower terminal portion 224 is provided at the end of each of the first and second support members illustrated in Figure 14 and can be coupled to the base 210 by extending from at least one resiliently deformable portion 222, . One end 224a of the lower terminal portion 224 may be inserted or placed in a support member seating groove 214 formed in the base 210 and fixedly coupled by an adhesive such as epoxy. However, the present invention is not limited to this, and the support member receiving grooves 214 may be made to correspond to the lower terminal portions 224 so as to be engaged with each other. Alternatively, one end 224a of the lower terminal portion 224 may be branched into two or more shapes, and correspondingly, at least two support member mounting grooves 214 per one support member are formed on the base 210 .

The other end 224b of the lower terminal portion 224 may be seated and connected to the top of each pad of the pad portions 252-1, 252-2, 252-3, and 252-4 of the circuit board 250.

The lower terminal portion 224 may be formed in a plate shape wider than the width of the first and second elastic deformation portions 222 and 223, but is not limited thereto and may have a narrow or corresponding width.

Meanwhile, the second coil 230 may be arranged to face the first magnet 130 fixed to the housing 140. For example, the second coil 230 may be disposed outside the first magnet 130. Alternatively, the second coil 230 may be installed at a predetermined distance below the first magnet 130.

According to the embodiment, as illustrated in FIGS. 12 and 13, a total of four second coils 230 may be provided at four corners of the circuit board 250, but the present invention is not limited thereto, Only one for the first direction and one for the third direction may be provided, or four or more may be provided. A circuit pattern may be formed on the circuit board 250 in the form of a second coil 230 and a separate second coil 230 may be disposed on the circuit board 250. However, Only a separate second coil 230 may be disposed on the circuit board 250 without forming a circuit pattern on the circuit board 250 in the form of the second coil 230. [ Alternatively, the second coil 230 may be formed by winding the wire in a donut shape, or may be electrically connected to the circuit board 250 by forming the second coil 230 in the form of an FP coil.

The circuit member 231 including the second coil 230 may be installed on the upper surface of the circuit board 250 disposed on the upper side of the base 210. However, the second coil 230 may be disposed in close contact with the base 210, may be spaced apart from the base 210, may be formed on a separate substrate, may be stacked on the circuit board 250 have.

The housing 140 can be moved in the second and third directions by the interaction of the first magnet 130 and the second coil 230 implemented as described above. To this end, the first to fourth support member pairs 220-1, 220-2, 220-3, and 220-4 may be configured to support the housing 140 relative to the base 210, And in a third direction.

Meanwhile, the second sensing sensor 240 may be disposed at the center of the second coil 230 to sense movement of the housing 140. The second sensing sensor 240 may be a hall sensor or any sensor capable of sensing a magnetic force change. As shown in FIG. 13, the second sensing sensor 240 may be provided at two corners of the base 210 disposed on the lower side of the circuit board 250, and the second sensing sensor 240 May be inserted into the second sensor mounting recess 215 formed in the base 210. The lower surface of the circuit board 240 may be the opposite surface of the surface on which the second coil 230 is disposed.

15 shows a perspective view of the circuit board 250 according to the embodiment.

13 and 15, the circuit board 250 may include a plurality of pad portions 252-1, 252-2, 252-3, and 252-4. The plurality of pad portions 252-1, 252-2, 252-3 and 252-4 are connected to the lower terminal portions 224 of the plurality of support member pairs 220-1, 220-2, 220-3 and 220-4 And the other end 224b of the second housing 224b. That is, the other end 224b of the lower terminal portion 224 of the first and second support members 220a-1 and 220b-1 of the first support member pair 220-1 is connected to the first pad portion 252-1 And the other end 224b of the lower terminal portion 224 of the first and second support members 220a-2 and 220b-2 of the second support member pair 220-2 is connected to the pads of the 2 of the first and second support members 220a-3 and 220b-3 of the third support member pair 220-3 and the pads of the first and second support members 220a-2 and 220b- The other end 224b is connected to the pads of the third pad portion 252-3 and the first and second support members 220a-4 and 220b-4 of the fourth support member pair 220-4 are connected, The other end 224b of the lower terminal portion 224 of the fourth pad portion 252-4 may be connected to the pads of the fourth pad portion 252-4. Each of the first to fourth pad portions 252-1, 252-2, 252-3, and 252-4 has two pads and can be connected to the first and second support members of the corresponding pair of support members, respectively.

The circuit board 250 may further include a plurality of terminals 251 electrically connected to the pad portions 252-1, 252-2, 252-3, and 252-4.

The circuit board 250 is coupled to the upper surface of the base 210 and a fifth through hole 255 may be formed at a corresponding position so that the support member receiving groove 214 is exposed. The circuit board 250 may have a bent terminal surface 233 formed thereon. According to the embodiment, at least one terminal 251 may be provided on one bent terminal surface 253 of the circuit board 250.

The power may be supplied to the first and second coils 120 and 230 and the first sensing sensor 170 by receiving external power through a plurality of terminals 251 provided on the terminal surface 253 , And may output the signal from the first sensor 170 to the outside as a feedback signal necessary for controlling the position of the bobbin 110.

The number of terminals formed on the terminal surface 253 on which the terminal 251 is provided may be increased or decreased depending on the type of components to be controlled.

According to the embodiment, the circuit board 250 may be formed of FPCB, but the present invention is not limited thereto, and the terminal structure of the circuit board 250 may be formed directly on the surface of the base 210 using a surface electrode method or the like It is also possible.

Hereinafter, in the lens driving apparatus having the above-described configuration, a plurality of support member pairs 220 are used to supply power to the first sensing sensor 170 and to supply a sensing signal, which is output from the first sensing sensor 170, The process of transferring the light to the substrate 250 will be described below with reference to the accompanying drawings.

When the first sensing 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. The first pin may include a 1-1 and 1-2 pin connected to a voltage and ground, respectively, and the second pin may include a 2-1 and a 2-2 pin outputting a sensed result . Here, the sensed result output through the 2-1 and 2-2 pins may be in current form, but the embodiment is not limited to the form of the signal.

According to the embodiment, the second support substrate pair 220-2 can be used to supply power from the circuit board 250 to the 1-1 and 1-2 pins of the first sensing sensor 170, 3 support substrate pair 220-3 may be used to transmit the sensed result from the second-1 and second-2 pins of the first sensing sensor 170 to the circuit board 250. Herein, the second support substrate pair means any one of the first to fourth support substrate pairs 220-1, 220-2, 220-3 and 220-4 except for the first support substrate pair 220-1 Substrate pair. Also, the third support substrate pair means any of the first to fourth support substrate pairs 220-1, 220-2, 220-3, and 220-4, any support substrate except for the first and second support substrate pairs ≪ / RTI >

16 is a plan view of the lower elastic member 160, the first to fourth support member pairs 220-1, 220-2, 220-3, and 220-4, and the circuit board 250 in the lens driving apparatus illustrated in FIG. It shows the perspective of the bay.

The 1-1 and 1-2 pins of the first sensing sensor 170 may be connected to the circuit board 250 through the second pair of support members 220-2.

To this end, the second contact terminal portion 221b of the upper terminal portion 221 of each of the first and second support members illustrated in Fig. 14 can be used. However, the embodiment is not limited to this, and the upper terminal portion 221 may be connected to the 1-1 and 1-2 pin in a different form from the second contact terminal portion 221b.

3, the second contact terminal portion 221b of the upper terminal portion 221 of the first support substrate 220a-2 of the second support member pair 220-2 is connected to the first contact terminal portion 221b of the first support substrate 220a- And the second contact terminal portion 221b of the upper terminal portion 221 of the second support member 220b-2 of the second support member pair 220-2 is electrically connected at the third contact CP3, 1-2 pin and the fourth contact point CP4. The lower terminal portions 224 of the first and second support substrates 220a-2 and 220b-2 of the second support member pair 220-2 are electrically connected to the second pad portions 252-2 of the circuit board 250 And the seventh and eighth contacts CP7 and CP8, respectively.

The 1-1 and 1-2 pins of the first sensing sensor 170 are electrically connected to the first and second supporting substrates 220a-2 and 220b-2 of the second supporting member pair 220-2, 2 to be connected to the circuit board 250. 16, the energizing paths from the 1-1 and 1-2 pin of the first sensing sensor 170 to the second pad 252-2 of the circuit board 250 are denoted by P1 and P2, respectively Respectively.

Further, the second-1 and second-2 pins of the first sensing sensor 170 are connected via the third and fourth supporting member pairs 220-3 via the first and second lower elastic members 160a and 160b, And may be connected to the substrate 250.

3, the 2-1 pin is electrically connected to the end of the 1-1 sensor contact portion 160a-1, which is one side of the first lower elastic member 160a at the fifth contact CP5. And the second -2 pin may be electrically connected to the end of the second sensor contact portion 160b-1 which is one side of the second lower elastic member 160b at the sixth contact CP6.

3, 8, and 16, the first sensor contact portion 160a-1, which is one side of the first lower elastic member 160a, includes the outer frame 162 and the first lower elastic member 160a The second contact terminal portion 221b of the first support member 220a-3 of the third support member pair 220-3 and the second contact terminal portion 221b of the third support member 220-3 via the first sensor contact portion 160a-2, CP9). The second-first sensor contact portion 160b-1, which is one side of the second lower elastic member 160b, is connected to the outer frame 162 and the second-second contact terminal portion 160b that is the other side of the second lower elastic member 160b 2 at the tenth contact CP10 with the second contact terminal portion 221b of the second support member 220b-3 of the third pair of support members 220-3.

The lower terminal portions 224 extending from the second contact terminal portions 221b of the first and second support members 220a-3 and 220b-3 of the third pair of support members 220-3 are connected to the circuit board 250 And the pads of the third pad unit 252-3. Accordingly, the second-1 and second-2 pins of the first sensing sensor 170 can be connected to the circuit board 250 through the third support member pair 220-3 via the lower elastic member 160 . 16, the current paths from the second-1 and second-2 pins of the first sensing sensor 170 to the third pad portion 252-3 of the circuit board 250 are denoted by P3 and P4, respectively Respectively.

According to the embodiment, the second support member pair 220-2 connecting the 1-1 and 1-2 pin of the first sensor 170 to the circuit board 250, -2 pin to the circuit board 250 may be symmetrical with respect to each other in the y-axis direction. To this end, the second support member pair 220-2 and the third support member pair 220-3 may be respectively disposed on the mutually facing side surfaces of the housing 140.

If the number of the supporting substrates is four in the lens driving apparatus and the power is supplied to the first coil 120 using the two supporting substrates, the number of pads required on the circuit board 250 is two Only. However, according to the embodiment, the total number of supporting substrates is eight, two of them are used to supply power to the first coil 120, and four of the remaining six supporting substrates are used for supplying power to the first Since the four pins of the sensor 170 are used to connect the circuit board 250, the number of pads required on the circuit board 250 may be six. As described above, according to the embodiment, since the number of supporting substrates is increased, the number of necessary pads in the circuit board 250 can be increased and the number of the terminals 251 can be increased.

If the number of the terminals 251 is 14 in the circuit board 250 when the number of the supporting boards is 4, the number of the terminals 251 in the circuit board 250 according to the embodiment is 18 to 20 However, the embodiment is not limited to the number of the terminals 251.

In the lens driving apparatus according to the embodiment, each of the first to fourth support member pairs 220-1, 220-2, 220-3, and 220-4 includes first and second support members electrically separated from each other . At this time, power can be supplied to the first coil 120 using the first pair of support members 220-1, and the first and second support members 220a-1 And 220b-1 are disposed adjacent to each other on the same side of the housing 140. The upper- The upper terminal portion 221 of the first support member 220a-1 is disposed so as to face the first support member contact portion 150a-1 of the first upper elastic member 150a, and the second support member 220b- 1 is arranged to face the second support member contact portion 150b-1 of the second upper elastic member 150b. Accordingly, the first pair of support members 220-1 and the upper contact piece 150 can be electrically connected to each other by soldering at one side of the housing 140, so that the first and second support member contacts 150a-1 And 150b-1 are positioned symmetrically with respect to the bobbin 110 by 180 ° with respect to each other.

Further, in order to precisely control the position of the bobbin 110, when the lens driving device additionally includes the first sensing sensor 170, a separate member for the added first sensing sensor 170 is not required. This is because the first sensing sensor 170 normally has four pins and is formed by using a pair of support members 220 and a lower elastic member 160 used for camera shake correction without using a separate member or a line, The pins and the circuit board 250 can be connected. Therefore, the manufacturing cost of the lens driving apparatus according to the embodiment is low and the structure can be simplified. This can be similarly applied to the case in which other devices for assisting the operation of the lens driving apparatus are additionally disposed in addition to the first sensing sensor 170. [

Meanwhile, the lens driving apparatus according to the above-described embodiments can be used in various fields, for example, a camera module. For example, the camera module can 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 as described above, and the circuit board 250 can form the bottom surface of the camera module from the portion where the image sensor is mounted.

Further, the optical system may include at least one or more lenses that transmit images to the image sensor. At this time, the optical system may be provided with an actuator module capable of performing autofocusing function and camera-shake correction function. Actuator modules that perform the auto focusing function can be variously configured, and a voice coil unit motor is generally used. The lens driving apparatus according to the above-described embodiment can perform the role of an actuator module that performs both the auto focusing function and the camera shake correction function.

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

A separate terminal member may be provided on the base 210 for electric connection with the circuit board 250, or a terminal may be integrally formed using a surface electrode or the like. Meanwhile, the base 210 may function as a sensor holder for protecting the image sensor. In this case, a protrusion may be formed downward along the side surface of the base 210. However, this is not essential, and although not shown, a separate sensor holder may be disposed below the base 210 to perform its role.

According to the above-described configuration, since the first magnet 130 can be commonly used to implement the auto focusing operation and the camera shake correcting operation of the first and second lens driving units 100 and 200, the number of components can be reduced, The weight of the housing 140 can be reduced to improve the responsiveness. Of course, the first magnet for auto focusing and the first magnet for image stabilization may be separately constructed.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is to be understood that the invention is not limited to the disclosed exemplary embodiments, but, on the contrary, It will be understood that various modifications and applications are possible. For example, each component specifically shown in the embodiments can be modified and implemented. It is to be understood that all changes and modifications that come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein.

100: first lens driving unit 200: second lens driving unit
110: bobbin 112a-1:
120: first coil 130: first magnet
140: housing 141a: magnet seat part
142a: Escape groove 142b:
144: upper frame support projection 145: lower frame support projection
147: engaging projection 150: upper elastic member
150a-1: first support member contact portion 150b-1: second support member contact portion
151a: first through hole 152a: fourth through hole
160: Lower elastic member 160a-1, 160a-2:
160b-1, 160b-2: second sensor contact portion 161a: second through hole
162a: third through hole 170: first sensing sensor
172: first sensing sensor seating groove 180: second magnet
182: metal for magnetic field compensation 210: base
211: step 234: support member seat groove
215: second sensor mounting groove 220: a plurality of pairs of support members
220a-1, 220a-2, 220a-3, 220a-4:
220b-1, 220b-2, 220b-3, 220b-4:
221: upper terminal portion 221a: first contact terminal portion
221b: second contact terminal portions 222, 223, 225:
224: lower side terminal portion 230: second coil
240: second sensing sensor 250: circuit board
251: terminal 253: terminal face
255: fifth through hole 300: cover member

Claims (19)

A bobbin in which at least one lens is provided on the inner side and a first coil is provided on the outer side; A first magnet disposed on the periphery of the bobbin so as to face the first coil; A housing for supporting the first magnet; And a first lens driving unit for moving the bobbin in a first direction parallel to the optical axis by interaction between the first magnet and the first coil, the upper and lower elastic members being coupled to the bobbin and the housing. And
A base disposed at a predetermined distance from the first lens driving unit; A plurality of support member pairs movably supporting the housing with respect to the base in a second direction and a third direction orthogonal to the first direction; A second coil disposed opposite the first magnet; And a second lens driving unit including a circuit board on which the second coil is mounted and moving the housing in the second and third directions by an interaction between the first magnet and the second coil,
Wherein the plurality of support member pairs are disposed on a side surface of the housing and each of the plurality of support member pairs includes first and second support members which are separated from each other to be disposed adjacent to the same side of the housing, And supplies power to the first coil through a first pair of support members which is one of a pair of support members. 2. The apparatus of claim 1, wherein the plurality of sides of the housing
A plurality of first surfaces provided at corners where a plurality of the first magnets are installed; And
Wherein the plurality of first surfaces are interconnected and the second surface is formed in a plane having a predetermined depth and each of the plurality of pairs of support members is disposed. 3. The image forming apparatus according to claim 2, wherein the upper elastic member includes first and second upper elastic members divided from each other,
Wherein the first and second upper elastic members are connected to each other while being opposed to the first and second support members of the pair of first support members to supply the power to the first coil. 4. The absorbent article according to claim 3, wherein each of the first and second upper elastic members
An inner frame coupled with the bobbin;
An outer frame coupled with the housing;
A frame connector connecting the inner frame and the outer frame; And
And a support member contact portion projecting from the outer frame and facing the first or second support member of the first pair of support members. 4. The zoom lens according to claim 3, wherein the first lens driving unit
A first sensing sensor supported by the housing to detect a position of the bobbin in the first direction; And
And a second magnet attached to an outer circumferential surface of the bobbin so as to face the first sensing sensor. 6. The lens driving apparatus according to claim 5, wherein the second magnet is disposed between a plurality of the first magnets spaced apart in the circumferential direction of the bobbin. The lens driving apparatus according to claim 5, wherein the first sensing sensor is inserted into the housing and supported. The lens driving apparatus according to claim 5, wherein the first sensing sensor is attached to the housing. 6. The seat according to claim 5, wherein the lower elastic member includes first and second lower elastic members which are divided from each other,
Wherein a first pin, which is part of a plurality of pins of the first sensing sensor, is connected to the circuit board through a second pair of support members,
Wherein a second pin of the plurality of pins of the first sensing sensor is connected to the circuit board via a pair of third and fourth supporting members which are the other of the first and second lower elastic members and the plurality of pairs of supporting members, drive. 10. The absorbent article according to claim 9, wherein each of the first and second lower elastic members
An inner frame coupled to the bobbin;
An outer frame coupled to the housing;
A frame connector connecting the inner frame and the outer frame; And
And at least one sensor contact protruding from the outer frame to be contactable with the second pin of the first sensing sensor and to be contactable with the third pair of support members. 10. The lens driving apparatus according to claim 9, wherein the pair of second support members and the pair of third support members are disposed opposite to each other. 6. The zoom lens according to claim 5, wherein the first lens driving unit
And a magnetic field compensating metal disposed on an outer circumferential surface of the bobbin symmetrical to the second magnet with respect to a center of the bobbin. 2. The lens driving apparatus according to claim 1, wherein the first and second support members have a shape symmetrical to each other in a direction perpendicular to the first direction. 11. The apparatus of claim 10, wherein each of the first and second support members
An upper terminal portion coupled with an upper end of the second surface of the housing;
At least one elastic deforming portion extending in the longitudinal direction from the upper terminal portion and having a shape bent at least once more; And
And a lower terminal portion extending from the at least one elastic deformation portion and coupled with the base. 15. The connector according to claim 14, wherein in the pair of first support members, the upper terminal portion of the first support member is electrically connected to the first upper elastic member, and the upper terminal portion of the second support member is connected to the second upper side And a lens driving device electrically connected to the elastic member. 15. The sensor according to claim 14, wherein in the second pair of support members, the upper terminal portion of the first support member is connected to a 1-1 pin, which is one of the first pins of the first sensing sensor, Wherein the upper terminal portion of the first sensing sensor is connected to a first one of the first pins of the first sensing sensor. 17. The sensor according to claim 16, wherein the second-1 pin, which is one of the second pins of the first sensing sensor, is connected to one side of the first lower elastic member, and the other one of the second pins, Is connected to one side of the second lower elastic member,
In the pair of third support members, the first support member is connected to the other side of the first lower elastic member, and the second support member is connected to the other side of the second lower elastic member. 15. The method of claim 14, wherein the circuit board
And a pad portion connectable with the lower terminal portion of each of the plurality of pairs of support members. Image sensor;
A printed circuit board on which the image sensor is mounted; And
A camera module comprising the lens driving device according to any one of claims 1 to 18.

Images