KR20160093280A - Lens moving unit and camera module having the same - Google Patents

Abstract

According to an embodiment of the present invention, a lens drive device comprises: a base; a circuit board installed on an upper side of the base and provided with a first coil arranged on an upper surface thereof; a bobbin provided with a second coil wound on an outer circumferential surface thereof, and installed to be lifted and lowered with respect to an optical axis; a holder member having magnets arranged on different surfaces to face the first and the second coil; an upper and a lower elastic member wherein one end thereof is connected to the bobbin and the other end thereof is connected to the holder member to elastically support the bobbin in a direction of the optical axis; a support member connected to the upper elastic member to support a movement of the holder member in a direction perpendicular to the optical axis; and at least one first guide unit to guide an installation position of the circuit board on the base. The first guide unit comprises: a guide protrusion protruding from the base; and a through hole penetrating a position of the circuit board corresponding to the guide protrusion.

Description

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

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

The camera module includes a printed circuit board on which an image sensor for transmitting electrical signals to the image sensor is mounted, an infrared cut filter for blocking light in the infrared region of the image sensor, and at least one or more lenses As shown in FIG. At this time, the optical system may be provided with a lens driving device capable of performing auto focus function and camera shake correction function.

The lens driving device can be variously configured, and a voice coil unit motor is generally used. The voice coil unit motor can operate by the electromagnetic interaction of the coil unit wound on the outer circumferential surface of the bobbin to which the magnet fixed to the housing and the lens barrel are coupled to perform the auto focusing function. The voice coil motor type actuator module can be reciprocated in a direction parallel to the optical axis while the bobbin moving up and down is elastically supported by the lower and upper elastic members.

In addition, a coil unit may be additionally provided to compensate for camera shake, and movement for camera-shake correction may be formed through electromagnetic interaction with the magnet.

However, when there is an impact or the like, the distance between the coil unit and the magnet changes, and the reliability of the product may deteriorate.

The present embodiment provides a lens driving apparatus in which reliability can be maintained even in an external impact, and a circuit board provided with a coil unit can be always installed on a base at a constant position by improving assembling performance.

The lens driving apparatus according to the present embodiment includes a base; A circuit board mounted on the base and having a first coil disposed on an upper surface thereof; A bobbin on which a second coil is wound on an outer circumferential surface and which is installed so as to be able to move up and down relative to an optical axis; A holder member on which magnets are disposed so as to face each other on different surfaces of the first and second coils; An upper and a lower elastic member having one end connected to the bobbin and the other end connected to the holder member and elastically supporting the bobbin in the optical axis direction; A supporting member connected to the upper elastic member to support movement of the holder member in a direction perpendicular to the optical axis; And at least one first guide unit for guiding an installation position of the circuit board to the base, wherein the first guide unit includes: a guide protrusion protruding from the base; And a through hole formed at a position corresponding to the guide protrusion of the circuit board.

A plurality of the first guide units may be symmetrical with respect to the center of the base and the circuit board.

The first guide unit may be disposed at a position that does not interfere with the first coil.

And a second guide unit for guiding a position of a circumferential surface of the base and the circuit board, wherein the second guide unit includes: a first boss protruding from a position close to an outer circumferential surface of the base; And a first groove formed at a position corresponding to the first boss of the circuit board.

The first groove portion may be recessed in the circumferential surface of the circuit board.

The first boss and the first groove may be disposed at positions that do not interfere with the first coil.

And a third guide unit for guiding a position of the inner surface of the base and the circuit board, wherein the third guide unit comprises: a second boss protruding from a position close to an inner circumferential surface of the base; And a second groove formed at a position corresponding to the second boss of the circuit board.

The pair of third guide units may be arranged symmetrically with respect to the center of the base and the circuit board.

The support member may be formed of a wire member, and two support members may be provided at each corner of the circuit board and the holder member.

The base may include a first recess at a position close to the guide projection, and an adhesive member for securing the circuit board may be applied to the first recess.

The base further includes at least one second concave portion provided with a position sensing sensor for sensing a variation of the magnetic force of the magnet facing the first coil at a position where the base does not interfere with the first concave portion, 2 recesses may be arranged so as not to interfere with the first recesses.

The circuit board may have an escape portion at a position facing the first coil, and an adhesive member may be applied to the escape portion.

The circuit board further includes a plurality of terminal portions on an inner circumferential surface, and the terminal portions and the end portions of the first coil can be fixed by soldering.

Wherein the circuit board is mounted with a position sensing sensor inserted into the second concave portion on a surface facing the base, the position sensing sensor comprising: a first sensor for sensing movement of the holder member in the X axis direction; And a second sensor for detecting movement of the holder member in the Y-axis direction.

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

According to the present embodiment as described above, since the guide means capable of always fixing the circuit board to the correct position in the base and the space for applying the adhesive member are provided, the position of the circuit board and the position of the position- It is possible to always fix it accurately and improve the assemblability of the product and the reliability of operation. Further, the combination of the circuit board and the coil unit can be made robust.

1 is a perspective view of a lens driving apparatus according to the present embodiment,
2 is a plan view showing a circuit board provided on the base,
3 is a plan view showing an upper surface of the base,
4 is a plan view showing a rear surface of the circuit board.

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

FIG. 1 is a perspective view of a lens driving apparatus according to the present embodiment, FIG. 2 is a plan view of a circuit board mounted on a base, FIG. 3 is a plan view showing an upper surface of the base, Fig.

The lens driving apparatus according to this embodiment may be constituted by first and second lens driving units, wherein the first lens driving unit is an autofocus lens driving unit and the second lens driving unit is a lens driving unit have.

The first lens driving unit may include a base 10, a bobbin 30, and a holder member 40.

At least one circuit board 20 may be installed on the upper side of the base 10 and a first coil 21 may be provided on the circuit board 20 to operate the second lens driving unit. The first coil 21 may be formed directly on the circuit board 20 or may be formed on a separate FP Coil and stacked on the circuit board 20. [ According to the present embodiment, the first coil 21 may include a pattern coil or the like. Further, it may further include a cover member for forming an outer frame of the camera module and, as shown in the figure, a holder member 40 for supporting a plurality of magnets may be disposed inside. Further, the base 10 can be engaged with the cover member.

The bobbin (30) can be installed in the inner space of the cover member so as to reciprocate in the optical axis direction. The bobbin 30 may be provided with a second coil on a coil seating portion formed on the outer circumferential surface of the bobbin 30 by electromagnetic interaction with the plurality of magnets in a direction parallel to the optical axis Up and down.

The bobbin 30 may be provided with the upper and lower elastic members on the upper and lower sides, respectively. The upper elastic member may be connected to the bobbin 30 at one end and may be coupled to the holder member 40 at the other end. However, the present invention is not limited thereto, and may be combined with the cover member if necessary. And may be coupled to the upper or lower surface of the holder member 40 when coupled to the holder member 40. The lower elastic member may be connected at one end to the bobbin 30 and at the other end to the upper surface of the base 10 or the lower surface of the holder member 40. In addition, a protrusion for coupling the lower elastic member may be formed on the lower side of the base 10, and a hole or a recess may be formed at a corresponding position of the lower elastic member, And the rotation can be prevented. In addition, an adhesive member or the like may be added for firm fixation, or the protrusion and the elastic member may be joined by heat welding or the like.

On the other hand, the upper elastic member is composed of two leaf springs in a two-part structure, and the lower elastic member is formed as a single body, and can serve as a terminal for receiving a current. That is, the current applied through the terminal 21a is transmitted through the support member 50 to be described later, and is transmitted through the two springs of the upper elastic member. This current is transmitted to the second coil wound on the bobbin 30 . To this end, the upper elastic member and the second coil may be electrically connected to each other by soldering or the like. Here, the upper elastic member includes an outer portion coupled with the holder member 40, an inner portion coupled with the bobbin, and a connection portion connecting the inner portion and the outer portion. The inner portion is electrically connected to both ends of the first coil through soldering or the like Can be connected. That is, both ends of the two springs and the second coil may be electrically connected to each other by soldering, Ag epoxy, welding, conductive epoxy, or the like. However, the present invention is not limited to this, and conversely, it is also possible that the lower elastic member is formed in this divided structure, and the upper elastic member is integrally formed. Alternatively, the upper elastic member may be divided into four or more parts.

The bobbin 30 can be elastically supported in both directions by the upper and lower elastic members in the direction of the optical axis. That is, the bobbin 30 is separated from the holder member 40 by a predetermined distance, and can be controlled to move upward and downward about the initial position of the bobbin 30. The initial position of the bobbin 30 may be contacted at the lower portion or the upper portion of the holder member 40 so that the bobbin 30 may be moved upward only about the initial position of the bobbin 30.

The second coil may be a ring-shaped coil block coupled to the outer circumferential surface of the bobbin 30. However, the present invention is not limited thereto, and the coil may be directly wound on the outer peripheral surface of the bobbin 30. As shown in FIG. 2, the second coil may be disposed at a position close to the lower surface of the bobbin 30, and may include a straight surface and a curved surface depending on the shape of the bobbin 30.

Or the second coil formed of the coil block may have various shapes and may be octagonal shapes. That is, all of them can be formed as straight lines without curved surfaces. This is because the electromagnetic action with the magnet placed opposite to the magnet is considered, because if the corresponding surface of the magnet is flat, the electromagnetic force can be maximized when the second coil facing surface is a flat surface. However, the present invention is not limited to this, and according to the design specification, the surface of the magnet and the surface of the second coil may be all curved, all flat, or one curved and the other flat.

The bobbin 30 has a first surface formed to be flat on the surface corresponding to the straight surface and a second surface formed on the surface corresponding to the curved surface so as to be coupled to the outer surface of the bobbin 30 But the second surface may also be a flat surface.

The holder member 40 may be formed of a substantially hexahedral frame. The upper and lower surfaces of the holder member 40 may be provided with coupling structures for coupling the upper and lower elastic members, respectively, and magnets may be installed at four corners or four sides. At this time, a seating part (not shown) may be formed at a position where the magnet is installed. However, the present invention is not limited thereto, and the magnet may be directly bonded and fixed to the inner circumferential surface of the holder member 40 without the seating portion. When the magnet is directly fixed to the holder member 40 as described above, the magnet may be directly bonded and fixed to the side or edge of the holder member 40. Further, unlike the embodiment, in the case of an autofocusing unit other than the camera-shake correction unit, there can be only a cover member without a separate holder member 40. [

The cover member not shown may be formed of a metal material such as a ferromagnetic material such as iron. In addition, the cover member may be provided in various shapes when viewed from above so that the bobbin 30 can be completely covered. At this time, the cover member may have a rectangular shape as shown in FIG. 2, or may have an octagonal shape, though not shown. In the case where the cover member is of an octagonal shape as viewed from above and the shape of the magnet disposed at the corner of the holder member 40 is trapezoidal as viewed from above, the magnetic field emitted from the edge of the holder member 40 can be minimized have.

The first lens driving unit may be configured as described above, or may be replaced with an optical system that implements another type of auto focusing function in addition to the above configuration. That is, instead of using an auto focusing actuator of the voice coil motor type, it is also possible to use an optical module using a single lens moving actuator or an actuator of a variable index type. That is, the first lens driving unit may be any optical actuator capable of performing the auto focusing function.

On the other hand, the second lens driving unit is a shake correction lens driving unit and includes a first lens driving unit, a base 10, a supporting member 50, a circuit board 20, first and second sensors 26 ).

The structure of the base 10 is as described above. As shown in FIG. 3, a guide projection 1100 and a first concave portion 11 to be described later may be formed. Also, the guide protrusion 1100 may be disposed at a position adjacent to the first recess 11. An adhesive member for fixing the circuit board 20 may be applied to the first recessed portion 11. According to this embodiment, a total of four first recesses 11 may be formed, and the first recesses 11 may be provided so as to be symmetrical with respect to the center of the base 10. Also, , And the first coil 21 (see FIG. 2).

The base 10 is provided with a position detection sensor for detecting a variation in the magnetic force of the magnet facing the first coil 21 at a position where the base 10 does not interfere with the first recess 11, And may further include a concave portion 13. According to this embodiment, two second recesses 13 are provided, in which the first and second sensors 26 and 27 can be arranged or inserted, and can additionally be fixed thereto with an epoxy or the like .

The circuit board 20 may include a first circuit board on which a position sensing sensor is installed, and a first coil 21. However, the present invention is not limited thereto, and the first circuit board and the first coil 21 may be formed of a single circuit board. In this embodiment, the first coil 21 and the second coil 21 are formed of a pattern coil or an FP coil. The first coil 21 is formed on the upper surface of the first circuit board, And they can be connected so as to be mutually energized. In this case, both ends of the first coil 21 can be fixed to the terminal portion 28 of the circuit board by soldering. 4, the terminal portions 23 of the first coil 21 and the terminal portions 28 of the circuit board 20 are arranged so as to overlap with each other, and each of the terminal portions 23, When four first coils 21 are provided, terminal portions 23 and 28 for soldering at least eight positions may be required. If the terminals of the first coil 21 to which the same signal can be applied can be shared among the first coils 21, the number of the terminal portions 23 and 28 for soldering is eight . In addition, the number of the terminal portions may be four or six, but is not limited thereto.

At this time, the circuit board 20 may be provided by FPCB and may be installed on the upper surface of the base 10. The first coil 21 can shift and / or tilt and / or horizontally move the entire first lens driving unit in a plane direction perpendicular to the optical axis through interaction with the magnet. The first coil 21 is disposed on the circuit board 20 in a pattern coil manner at a position corresponding to the bottom surface of the magnet. For example, when the magnet is installed on each wall surface portion of the holder member 40, The coils 21 may be disposed on mutually corresponding surface portions of the circuit board 20. In the embodiment, four first coils 21 may be disposed opposite to the magnet, but the present invention is not limited thereto, and two of the first coils 21 may be disposed opposite to each other, or at least four or more may be disposed. In addition, the number of the first coils facing the magnet may be two instead of one.

1 and 4, the circuit board 20 is provided with an escape portion 25 at a position facing the first coil 21 to apply an adhesive member to the escape portion 25 . That is, according to the present embodiment, the first circuit board 22 may further include a second circuit board 22 stacked on the first circuit board. In this case, the first coil 21 may be mounted on the second circuit board 22 And may be electrically connected to the first circuit board. In order to fix the first coil 21 and the second circuit board 22 formed on the second circuit board 22 as described above, the escape portion 25 is formed at a corresponding position of the circuit board 20 And may be provided as a space through which an adhesive member for fixing the second circuit board 22 to the escaping portion 25 penetrates. The escape portion 25 may be formed at or near the center of the first coil 21. At this time, a gap is not formed between the second circuit board 22 and the circuit board 20, so that the adhesive member can be permeated into the escaping portion 25. The circuit board 20 further includes a plurality of terminal portions 28 to electrically connect the terminal portions 28 and the end portions of the first coil 21 or the unshown terminal portions of the second circuit board 22 by soldering Electrical connection and / or fixation.

According to this configuration, when the terminal 21a is formed by bending as shown in Fig. 1, the second circuit board 20 is stacked on the upper side of the circuit board 20 by the adhesive member applied to the escape portion 25, It is possible to prevent the surface contact portion 22 from being lifted up from the surface of the circuit board 20 during the process of bending the portion where the terminal 21a is formed, It is possible to suppress the bending of the portion other than the bending portion and to prevent the indirect contact and the contact with the driving portion such as the bobbin 30 and to minimize the defective performance such as hysteresis.

The first sensor 26 and the second sensor 27, which are inserted into and coupled to the second recess 13 (see FIG. 3), are mounted on the circuit board 20 having the above-described structure, , The first sensor 26 senses movement of the holder member 40 in the first or X axis direction and the second sensor 27 senses the movement of the holder member 40 in the second or Y axis direction . In this case, the first and second directions are orthogonal to each other and are diagonal directions of the movement in the X and Y directions. On the other hand, the first and second sensors 26 and 27 may be provided on the second circuit board 22 side. In this case, a through hole is formed at a position corresponding to the first and second sensors 26 and 27 of the circuit board 20 so that the first and second sensors 26 and 27 are connected to the second recess 26, (Not shown). At this time, the first and second sensors 26 and 27 inserted into the second concave portion 13 may be inserted without a separate adhesive member, or may be fixed to the corresponding portion through an adhesive member such as a bond or the like have.

The position sensor constructed as described above may be installed on the circuit board 20, but not limited thereto, and may be disposed and / or mounted directly on the base 10. The position detecting sensor detects the magnetic field of the magnet and senses the movement of the holder member 40 in which the magnet is installed, in a direction perpendicular to the optical axis. According to the present embodiment, as shown in Fig. 4, it can be constituted by the first and second sensors 26 and 27, which are arranged so as not to overlap with each other at a different position, It is possible to sense movement in the first direction and the second direction which are the X-axis and Y-axis directions or the diagonal directions which are the vertical directions.

The first stopper 100 may be disposed on the upper surface of the holder member 40 so that damage to the support member 50 may be minimized when a sudden external impact is generated. have.

A plurality of first stoppers 100 may be formed on the upper surface of the holder member 40 as shown in FIG. According to the present embodiment, the first stopper 100 can be disposed near the center of each surface of the holder member 40. [ However, it is not limited thereto, and it is also possible to arrange two sheets per side if necessary. The first stopper 100 may be formed in a hexahedral shape, and the upper surface thereof may be flat.

The support member 50 may be formed of a wire member, and two of the support members 50 may be provided at each corner of the circuit board 20 and the holder member 40. One end of the support member 50 may be coupled to the outer side of the upper elastic member and the other end may be coupled to the second circuit board 22 or the circuit board 20 or the base 10, . Further, when the other end of the support member 50 is coupled to, or electrically coupled to, or soldered to the second circuit board 22, a separate hole may not be formed in the second circuit board 22. The embodiment shows that the holes 29 are formed as shown in FIG. Meanwhile, the upper elastic member to which the supporting member 50 is connected is provided in a two-part structure, and is supplied with power through the supporting member 50 to perform auto focusing driving. At this time, the support member 50 may be electrically connected to the circuit board 20 and the second circuit board 22, and may be electrically connected to a printed circuit board (not shown) to supply power to the auto focusing unit .

In addition, the lens driving apparatus according to the present embodiment may be provided with a first guide unit 1000 so that the assembly position of the base 10 and the circuit board 20 can be always constantly guided during assembly work. The first guide unit 1000 may include at least one or more guide protrusions 1100 and a through hole 1200.

The guide protrusion 1100 may be integrally formed on the upper surface of the base 10 as shown in FIGS. However, the present invention is not limited to this, and a pin member or the like may be inserted. The guide protrusion 1100 may be disposed on an imaginary line connecting the center and the edge of the base 10 as shown, but the position is not limited thereto and may be provided in a cylindrical shape. According to the present embodiment, a total of four guide protrusions 1100 can be protruded, and these guide protrusions 1100 can be spaced apart from the center of the base 10 by a certain distance. Accordingly, the plurality of guide protrusions 1100 can be arranged symmetrically with respect to the center of the base 10. [

As shown in FIGS. 2 and 4, the through hole 1200 may be formed at a position corresponding to the guide protrusion 1100, and may have a shape corresponding to the shape of the guide protrusion 1100. The shape of the through hole 1200 may be circular, and if the guide protrusion 1100 is a polygon including a triangle or a rectangle, it may be provided in a corresponding shape. The through hole 1200 may be formed in the second circuit board 22 and the circuit board 20, or may be formed only in the circuit board 20.

The first guide unit 1000 configured as described above may be disposed at a position that does not interfere with the first coil 21. [ For example, when the first coil 21 is disposed on each surface portion of the base 10 and the circuit board 20, the first guide unit 1000 can be disposed in the vicinity of the edge.

According to the present embodiment, the second guide unit 2000 for guiding the position of the circumference of the base 10 and the circuit board 20 can be further included. Alternatively, only the second guide unit 2000 may be included without the first guide unit 1000. The second guide unit 2000 may include a first boss 2100 and a first groove 2200.

The first boss 2100 protrudes from the upper surface of the base 10 and may be disposed at a position close to the outer circumferential surface of the base 10. At this time, as shown in FIG. 3, only one first boss 2100 may be disposed eccentrically at one end. With such a configuration, the circuit board 20 can be assembled to the base 10 with a certain directionality. This is for guiding the first and second sensors 26 and 27 mounted on the circuit board 20 to be assembled in the correct positions.

The first trench 2200 may be formed at a position corresponding to the first boss 2100 of the circuit board 20. The first trench 2200 may be concave on the circumferential surface of the circuit board 20 and correspond to the shape of the first boss 2100. For example, when the first boss 2100 is cylindrical, the first groove portion 2200 may be formed in a semicircular shape. The first boss 2100 and the first groove 2200 may be disposed at positions that do not interfere with the first coil 21. The first trench 2200 may be formed on the second circuit board 22 and the circuit board 20 or may be formed on the circuit board 20 only. The apparatus may further include a third guide unit 3000 for guiding the position of the inner surface of the base 10 and the circuit board 20. However, the present invention is not limited thereto, and may be constituted by only the third guide unit 3000 without the first and second guide units 1000, 2000, and each of the guide units 1000, 2000, Any combination is possible with independent configuration. The third guide unit 3000 includes a second boss 3100 protruding from a position close to the inner circumferential surface of the base 10 and a second boss 3100 formed at a position corresponding to the second boss 3100 of the circuit board 20 2 grooves 3200. [0042] At this time, the third guide unit 3000 may be arranged to be symmetrical with respect to the center of the base 10 and the circuit board 20, but the position is not limited thereto. It can also be placed on an imaginary line connecting the center and both corners of the base 10 and the circuit board 20. The second trench 3200 may be formed on the second circuit board 22 and the circuit board 20 or only on the circuit board 20.

Meanwhile, in the first lens driving apparatus constructed as described above, the base 10 and the bobbin 30 may be disposed at a predetermined distance from the initial position. In this case, the upper and lower elastic members may be formed in a flat state without applying a preload, but may be formed in a state in which a predetermined preload is applied. In this case, when the bobbin 30 is separated from the base 10 by a predetermined distance, when the power is applied, the bobbin 30 may be raised based on the initial position when a constant current is applied If the reverse current is applied, it may be lowered based on the initial position.

The camera module may include a lens driving device configured as described above, a lens barrel coupled to the bobbin 30, an image sensor, and a printed circuit board. At this time, the printed circuit board is mounted on the image sensor and can form the bottom surface of the camera module.

The bobbin 30 may include a lens barrel in which at least one lens is installed. The lens barrel may be screwed into the bobbin 30. However, the present invention is not limited thereto, and although not shown, it is also possible that the lens barrel is directly fixed to the inside of the bobbin 30 by a method other than screwing, or the one or more lenses are formed integrally with the bobbin . The lens may be composed of a single sheet, or two or more lenses may be configured to form an optical system

The base 10 may further include an infrared cut filter at a position corresponding to the image sensor 11 and may be coupled to the holder member 40. Further, the lower side of the holder member 40 can be supported. A separate terminal member may be provided in the base 10 for powering the printed circuit board 10, or a terminal may be integrally formed using a surface electrode or the like. Meanwhile, the base 10 may function as a sensor holder for protecting the image sensor. In this case, protrusions may be formed downward along the side surface of the base 10. However, this is not an essential configuration and, although not shown, a separate sensor holder may be disposed below the base 10 to perform its role.

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, is intended to cover various modifications and equivalent arrangements included within the spirit and scope of the appended claims. Therefore, the true scope of protection of the present embodiment should be defined by the following claims.

10; Base 20; Circuit board
21; A first coil 25; Escape part
26; A first sensor 27; The second sensor
28; A terminal portion 30; Bobbin
40; A holder member 50; Supporting member
1000; A first guide unit 1100; Guide projection
1200; 2000; The second guide unit
2100; A first boss 2200; The first groove
3000; A third guide unit 3100; Second boss
3200; The second groove

Claims (15)

Base;
A circuit board mounted on the base and having a first coil disposed on an upper surface thereof;
A bobbin on which a second coil is wound on an outer circumferential surface and which is installed so as to be able to move up and down relative to an optical axis;
A holder member on which magnets are disposed so as to face each other on different surfaces of the first and second coils;
An upper and a lower elastic member having one end connected to the bobbin and the other end connected to the holder member and elastically supporting the bobbin in the optical axis direction;
A support member connected to the upper elastic member to support movement of the holder member in a direction perpendicular to the optical axis;
And at least one first guide unit for guiding a mounting position of the circuit board to the base,
The first guide unit includes:
A guide protrusion protruding from the base; And
And a through hole formed at a position corresponding to the guide projection of the circuit board.
2. The apparatus according to claim 1, wherein the first guide unit comprises:
And a plurality of lens groups are arranged so as to be symmetrical with respect to the center of the base and the circuit board.
2. The apparatus according to claim 1, wherein the first guide unit comprises:
And is disposed at a position that does not interfere with the first coil.
The method according to claim 1,
Further comprising a second guide unit for guiding a position of a circumferential surface of the base and the circuit board,
The second guide unit includes:
A first boss protruding from a position close to an outer circumferential surface of the base; And
And a first groove formed at a position corresponding to the first boss of the circuit board.
5. The method of claim 4,
Wherein the first groove portion is concave on the circumferential surface of the circuit board.
5. The method of claim 4,
Wherein the first boss and the first groove are disposed at positions that do not interfere with the first coil.
The method according to claim 1,
And a third guide unit for guiding the position of the inner surface of the base and the circuit board,
The third guide unit includes:
A second boss protruding from a position close to an inner circumferential surface of the base; And
And a second groove portion formed at a position corresponding to the second boss of the circuit board.
8. The apparatus according to claim 7, wherein the third guide unit comprises:
Wherein the pair of lenses are arranged symmetrically with respect to the center of the base and the circuit board.
The image forming apparatus according to claim 1,
And two wire members are provided at each corner of the circuit board and the holder member.
The apparatus of claim 1,
And a first concave portion at a position close to the guide projection to apply an adhesive member for fixing the circuit board to the first concave portion.
11. The apparatus of claim 10,
And at least one second concave portion provided with a position sensing sensor for sensing a variation of the magnetic force of the magnet facing the first coil at a position not interfering with the first concave portion,
And the second concave portion is disposed so as not to interfere with the first concave portion.
12. The circuit board according to claim 11,
Wherein an escape portion is provided at a position facing the first coil, and an adhesion member is applied to the escape portion.
12. The circuit board according to claim 11,
Further comprising a plurality of terminal portions on the inner circumferential surface, wherein the terminal portions and the end portions of the first coil are fixed by soldering.
12. The circuit board according to claim 11,
And a position sensing sensor inserted and coupled to the second concave portion is mounted on a surface facing the base,
The position detection sensor includes:
A first sensor for sensing movement of the holder member in the X-axis direction; And
And a second sensor for detecting movement of the holder member in the Y-axis direction.
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 14.

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