KR102432907B1 - Lens moving unit and camera module having the same - Google Patents

Abstract

The lens driving device according to the present embodiment includes a base; a circuit board installed on the upper side of the base and having a first coil disposed on the upper surface; a bobbin having a second coil wound on an outer circumferential surface, and installed to be able to rise and fall with respect to an optical axis; a holder member on which magnets are disposed to face the first and second coils on different surfaces; upper and lower elastic members having one end connected to the bobbin and the other end connected to the holder member to elastically support 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 the installation position of the circuit board on the base, wherein the first guide unit includes: a guide protrusion protruding from the base; and a through hole formed through the circuit board at a position corresponding to the guide protrusion.

Description

Lens moving unit and camera module having the same

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

The camera module includes an image sensor and a printed circuit board on which an image sensor that transmits electrical signals is mounted, an infrared cut-off filter that blocks light in an infrared region to the image sensor, and at least one or more lenses that transmit an image to the image sensor. It may include an optical system consisting of. In this case, the optical system may be provided with a lens driving device capable of performing an auto-focusing function and a hand-shake correction function.

The lens driving device can be configured in various ways, and a voice coil unit motor is generally used a lot. The voice coil unit motor operates by electromagnetic interaction of the coil unit wound on the outer circumferential surface of the bobbin in which the magnet fixed to the housing and the lens barrel are coupled to perform the auto-focusing function. Such an actuator module of the voice coil motor type may reciprocate 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, for hand-shake correction, a coil unit may be additionally installed to form a movement for hand-shake correction through electromagnetic interaction with the magnet.

However, when there is an impact or the like, the distance between the coil unit and the magnet is changed, and product reliability may be deteriorated.

The present embodiment provides a lens driving device with an improved structure so that reliability can be maintained even in external shocks, and assembly is improved so that a circuit board having a coil unit installed at a constant position can be installed on a base at all times.

The lens driving device according to the present embodiment includes a base; a circuit board installed on the upper side of the base and having a first coil disposed on the upper surface; a bobbin having a second coil wound on an outer circumferential surface, and installed to be able to rise and fall with respect to an optical axis; a holder member on which magnets are disposed to face the first and second coils on different surfaces; upper and lower elastic members having one end connected to the bobbin and the other end connected to the holder member to elastically support 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 the installation position of the circuit board on the base, wherein the first guide unit includes: a guide protrusion protruding from the base; and a through hole formed through the circuit board at a position corresponding to the guide protrusion.

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.

It further comprises a second guide unit for guiding the position of the peripheral surface of the base and the circuit board, the second guide unit, The second guide unit, The first boss is formed to protrude at a position close to the outer peripheral 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 concavely formed in the circumferential surface of the circuit board.

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

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

A pair of the third guide unit may be symmetrically disposed with respect to the center of the base and the circuit board.

The support member is composed of a wire member, and may be installed two at each corner of the circuit board and the holder member.

The base may include a first concave portion at a position close to the guide protrusion, and an adhesive member for fixing the circuit board may be applied to the first concave portion.

The base further includes; at least one second concave portion in which a position detection sensor for detecting a change in magnetic force of a magnet facing the first coil is installed at a position not interfering with the first concave portion; The second concave portion may be disposed so as not to interfere with the first concave portion.

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

The circuit board may further include a plurality of terminal portions on an inner circumferential surface, so that the terminal portions and the ends of the first coil are fixed by soldering.

The circuit board is provided with a position sensing sensor inserted into and coupled to the second concave portion on a surface facing the base, and the position sensing sensor includes: a first sensor sensing a movement of the holder member in an X-axis direction; and a second sensor for detecting the 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, a guide means capable of always fixing and coupling the circuit board at an accurate position to the base and a space for applying an adhesive member are provided, so that the position of the circuit board and the position of the position sensor are adjusted. It can be fixed accurately at all times, improving product assembly and operational reliability. In addition, the coupling between the circuit board and the coil unit can be strengthened.

1 is a perspective view of a lens driving device according to the present embodiment;
2 is a plan view showing a circuit board installed on the upper side of the base;
3 is a plan view showing the upper surface of the base, and,
4 is a plan view showing the rear surface of the circuit board.

Hereinafter, either one of the 'first coil 21' and the 'second coil' may be referred to as a 'first coil', and the other one may be referred to as a 'second coil'. Hereinafter, the 'second groove 3200' may be referred to as a 'groove'. Hereinafter, any one of the 'terminal unit 28' and the 'terminal 21a' may be referred to as a 'first terminal' and the other may be referred to as a 'second terminal'. Hereinafter, the 'through hole 1200' may be referred to as a 'hole'. Furthermore, the 'through hole 1200' may be referred to as a 'first hole' or a 'second hole' to distinguish it from other 'holes'.
Hereinafter, an embodiment of the present embodiment will be described with reference to the accompanying drawings.

1 is a perspective view of a lens driving device according to this embodiment, FIG. 2 is a plan view showing a circuit board installed on the upper side of the base, FIG. 3 is a plan view showing the upper surface of the base, and FIG. 4 is the rear surface of the circuit board is a plan view showing

The lens driving device according to the present embodiment may include first and second lens driving units, the first lens driving unit may be a lens driving unit for autofocus, and the second lens driving unit may be a lens driving unit for image stabilization. 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 an upper side of the base 10 , and a first coil 21 for operating the second lens driving unit may be installed on the circuit board 20 . The first coil 21 may have a coil pattern 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. In addition, forming the outer periphery of the camera module, as shown, may further include a cover member so that the holder member 40 for supporting a plurality of magnets can be disposed inside. In addition, the base 10 may be coupled to the cover member.

The bobbin 30 may be installed to be reciprocally movable in the optical axis direction in the inner space of the cover member. The bobbin 30 may have a second coil installed in a coil seating portion formed on the outer circumferential surface, and the second coil moves the bobbin 30 in a direction parallel to the optical axis by electromagnetic interaction with the plurality of magnets. can rise and fall.

The bobbin 30 may be provided with the upper and lower elastic members at upper and lower portions, respectively. One end of the upper elastic member may be connected to the bobbin 30 , and the other end may be coupled to the holder member 40 . However, the present invention is not limited thereto, and may be coupled to the cover member if necessary. When coupled to the holder member 40 may be coupled to the upper surface or the lower surface of the holder member (40). One end of the lower elastic member may be connected to the bobbin 30 , and the other end may be coupled 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 is formed at a position corresponding to the lower elastic member, so that the lower elastic member is formed by combining them. It may be fixed, and rotation may be prevented. In addition, an adhesive member may be added for rigid fixation, and the protrusion and the elastic member may be combined by heat sealing or the like.

On the other hand, the upper elastic member is provided with two leaf springs in a two-part structure, and the lower elastic member is composed of one body, and may serve as a terminal to receive 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 two springs of the upper elastic member, and this current is applied to the second coil wound on the bobbin 30 . may be authorized 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 to the holder member 40, an inner portion coupled to the bobbin, and a connecting portion connecting the inner portion and the outer portion, and the inner portion is electrically connected to both ends of the first coil through soldering, etc. can be connected That is, the two springs and both ends of 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 thereto. Conversely, it is also possible that the lower elastic member is formed in a two-division structure, and the upper elastic member is integrally configured. Alternatively, the upper elastic member may be formed to be divided into four or more.

Bidirectional movement of the bobbin 30 in the optical axis direction may be elastically supported by the upper and lower elastic members. That is, since the bobbin 30 is spaced apart from the holder member 40 by a predetermined distance, the movement of the bobbin 30 in the upper and lower directions can be controlled based on the initial position of the bobbin 30 . In addition, the initial position of the bobbin 30 may be brought into contact with the lower or upper portion of the holder member 40 , and thus movement may be controlled only upwards based on the initial position of the bobbin 30 .

Meanwhile, the second coil may be provided as 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 circumferential surface of the bobbin 30 . As shown in FIG. 2 , the second coil may be installed at a position close to the lower surface of the bobbin 30 , and may include a straight surface and a curved surface according to the shape of the bobbin 30 .

Alternatively, the second coil formed of the coil block may have an angular shape or an octagonal shape. That is, all of the curved surfaces may be formed as straight surfaces. This is in consideration of the electromagnetic action with the magnets disposed to face each other, and if the corresponding surface of the magnet is flat, the electromagnetic force can be maximized when the face of the facing second coil is flat. However, the present invention is not limited thereto, and the surface of the magnet and the surface of the second coil may be all curved, all flat, or one curved surface and the other flat surface according to design specifications.

In addition, the bobbin 30 includes a first surface formed flat on a surface corresponding to the straight surface and a second surface formed to be rounded on a surface corresponding to the curved surface so that the second coil can be coupled to the outer peripheral surface. may be included, but the second surface may be a flat surface.

The holder member 40 may be configured as a frame having a substantially hexahedral shape. A coupling structure for coupling the upper and lower elastic members may be provided on the upper and lower surfaces of the holder member 40, respectively, and magnets may be installed on the four corners or the four side surfaces. In this case, a seating portion (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 adhesively fixed to the inner circumferential surface of the holder member 40 without a seating portion. As such, when the magnet is directly fixed to the holder member 40 , the magnet may be directly bonded and fixed to the side or corner of the holder member 40 . In addition, unlike the embodiment, in the case of an auto-focusing unit rather than a hand-shake correction unit, there may be only a cover member without a separate holder member 40 .

The cover member (not shown) may be formed of a metal material, which is a ferromagnetic material such as iron. In addition, the cover member may be provided in a rectangular shape when viewed from the upper side so as to cover all of the bobbin 30 . In this case, the cover member may have a rectangular shape as shown in FIG. 2 , or may be provided in an octagonal shape although not shown. In addition, when the cover member has an octagonal shape when viewed from above, if the shape of the magnet disposed at the edge of the holder member 40 is a trapezoid shape when viewed from the top, 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, and may be replaced with an optical system that implements another type of auto-focusing function in addition to the above-described configuration. That is, it is also possible to configure an optical module using a single-lens moving actuator or a refractive index variable actuator instead of using a voice coil motor type auto-focusing actuator. That is, any optical actuator capable of performing an auto-focusing function may be used as the first lens driving unit.

On the other hand, the second lens driving unit is a lens driving unit for image stabilization, and includes a first lens driving unit, a base 10 , a support member 50 , a circuit board 20 , and first and second sensors 26 , 27 . ) may be included.

The configuration of the base 10 is as described above, and as shown in FIG. 3 , a guide protrusion 1100 and a first concave portion 11 to be described later may be formed. In addition, the guide protrusion 1100 may be disposed at a position adjacent to the first concave portion 11 . An adhesive member for fixing the circuit board 20 may be applied to the first concave portion 11 . According to this embodiment, a total of four first concave portions 11 may be formed, and also, the first concave portions 11 may be installed to be symmetrical with respect to the center of the base 10 . , the first coil 21 (refer to FIG. 2) may be formed at a position that does not interfere.

In addition, the base 10 has at least one second position sensor for detecting a change in magnetic force of a magnet facing the first coil 21 at a position not interfering with the first concave portion 11 . It may further include a concave portion 13 . According to this embodiment, two second concave portions 13 are provided, and the first and second sensors 26 and 27 may be disposed or inserted therein, and may be additionally fixed thereto with epoxy or the like. .

The circuit board 20 may include a first circuit board on which a position 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 configured as a single circuit board. In this embodiment, the first circuit board and the first coil 21 are separated from each other, and the first coil 21 is formed of a pattern coil or an FP coil, and the first coil is formed on the upper surface of the first circuit board. These are stacked and can be connected to each other so as to be energized. In this case, both ends of the first coil 21 may be energably fixed to the terminal portion 28 of the circuit board by soldering. That is, as shown in FIG. 4 , the terminal part 23 of the first coil 21 and the terminal part 28 of the circuit board 20 are disposed to overlap each other, and each of the terminal parts 23 and 28 is a total When the four first coils 21 are provided, at least eight terminals 23 and 28 for soldering may be required. If, among the first coils 21 , the terminals of the first coils 21 to which the same signal can be applied can be shared, the number of terminal parts 23 and 28 for soldering is less than eight places. can decrease. In addition, the number of the terminal parts may be 4 or 6, but is not limited thereto.

In this case, the circuit board 20 may be provided as an FPCB, and may be installed on the upper surface of the base 10 . The first coil 21 may 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 at a position corresponding to the bottom surface of the magnet in a patterned coil manner. For example, when the magnet is installed on each wall portion of the holder member 40, the first The coil 21 may be disposed on each side portion of the circuit board 20 corresponding to each other. In the embodiment, four first coils 21 may be disposed to face the magnet, but the present invention is not limited thereto, and two first coils 21 may be disposed to face each other, or at least four or more may be disposed. In addition, the first coil facing the magnet may be composed of two instead of one.

On the other hand, as shown in FIGS. 1 and 4 , the circuit board 20 is provided with a relief unit 25 at a position facing the first coil 21 , and an adhesive member is applied to the escape unit 25 . it might be That is, according to the present embodiment, it may further include a second circuit board 22 stacked on the upper side of the first circuit board. In this case, the first coil 21 is connected to the second circuit board 22 . formed, 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 in this way, the escape portion 25 is formed at a corresponding position of the circuit board 20 . Thus, it may be provided as a space through which an adhesive member for fixing the second circuit board 22 to the escape portion 25 permeates. The escape body 25 may be formed at or near the center of the first coil 21 . In this case, the second circuit board 22 and the circuit board 20 are configured not to form a gap, so that the adhesive member can permeate into the escape portion 25 . In addition, the circuit board 20 further includes a plurality of terminal portions 28, so that the terminal portion 28 and an end of the first coil 21 or an unillustrated terminal portion of the second circuit board 22 are soldered to each other. It may be electrically connected and/or fixed.

According to this configuration, when the portion on which the terminal 21a is formed is bent as shown in FIG. 1 , the second circuit board is laminated on the upper side of the circuit board 20 by the adhesive member applied to the relief 25 . Since the 22 can be tightly adhered to the upper side of the circuit board 20, it is possible to prevent the lifting of their surface contact parts from occurring, and during the process of bending the portion where the terminal 21a is formed, It is possible to suppress bending of parts other than the bending part, thereby blocking indirect and contact with a driving part such as the bobbin 30, and minimizing performance defects such as hysteresis.

A first sensor 26 and a second sensor 27 inserted and coupled to the second concave portion 13 (refer to FIG. 3 ) on a surface facing the base 10 are mounted on the circuit board 20 configured as described above, , the first sensor 26 detects the movement of the holder member 40 in the first direction or the X-axis direction, and the second sensor 27 detects the movement of the holder member 40 in the second direction or the Y-axis direction. can In this case, the first and second directions are mutually orthogonal, and are diagonal directions of the above-described X and Y-axis movement. Meanwhile, the first and second sensors 26 and 27 may be installed on the side of the second circuit board 22 . In this case, a through hole is formed in 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 concave portion. (13) can be inserted. At this time, the first and second sensors 26 and 27 inserted into the second concave part 13 may be inserted without a separate adhesive member, or the position may be fixed in the corresponding part through an adhesive member such as a bond. have.

The position detection sensor configured as described above may be installed on the circuit board 20 , but is not limited thereto, and may be disposed and/or mounted directly on the base 10 . The position sensor detects the magnetic field of the magnet, and may detect a movement in a direction perpendicular to the optical axis of the holder member 40 in which the magnet is installed. According to this embodiment, as shown in FIG. 4, it may be composed of first and second sensors 26 and 27, which are arranged so as not to overlap at different positions, and are disposed on the optical axis of the first lens driving unit. Movements in vertical X-axis and Y-axis directions or diagonal first and second directions may be sensed.

On the other hand, in the lens driving device according to the present embodiment, the first stopper 100 may be disposed on the upper surface of the holder member 40 to minimize damage to the support member 50 when a sudden external shock occurs. have.

A plurality of first stoppers 100 may protrude from the upper surface of the holder member 40 as shown in FIG. 1 . According to the present embodiment, the first stopper 100 may be disposed approximately in the vicinity of the center of each surface of the holder member 40 . However, the present invention is not limited thereto, and if necessary, it is also possible to arrange two on each side. The first stopper 100 may be provided in a hexahedral shape, and the upper surface may be configured to be flat.

The support member 50 is composed of a wire member, and may be installed two at each corner of the circuit board 20 and the holder member 40 . One end of the support member 50 is 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, and in some cases a combination is possible. . In addition, when the other end of the support member 50 is coupled, electrically coupled, 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 hole 29 is formed as shown in FIG. On the other hand, the upper elastic member to which the support member 50 is connected is provided in a two-part structure, and receives power through the support 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, or electrically connected to a printed circuit board (not shown) to supply power to the auto focusing unit. .

In addition, in the lens driving device according to the present embodiment, the first guide unit 1000 may be provided to constantly guide the assembly positions of the base 10 and the circuit board 20 at all times during the assembly operation. At least one or more first guide units 1000 may be provided, and may include a guide protrusion 1100 and a through hole 1200 .

The guide protrusion 1100 may be integrally protruded from the upper surface of the base 10 as shown in FIGS. 2 and 3 . However, the present invention is not limited thereto, and it is also possible to configure by inserting a pin member or the like. As shown, the guide protrusion 1100 may be disposed on an imaginary line connecting the center and the edge of the base 10, but the location is not limited thereto, and may also be provided in a cylindrical shape. According to the present embodiment, a total of four guide protrusions 1100 may be formed to protrude, and these guide protrusions 1100 may be spaced apart from the center of the base 10 by a predetermined distance. Accordingly, the plurality of guide protrusions 1100 may be symmetrically disposed with respect to the center of the base 10 .

As shown in FIGS. 2 and 4 , the through hole 1200 is formed through a position corresponding to the guide protrusion 1100 , and may be provided in 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 and a quadrangle, it may be provided in a shape corresponding thereto. 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 side of the base 10 and the circuit board 20 , the first guide unit 1000 may be disposed near a corner.

In addition, according to the present embodiment, the second guide unit 2000 for guiding the position of the peripheral surface of the base 10 and the circuit board 20 may 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 portion 2200 .

The first boss 2100 is protruded from the upper surface of the base 10 , and may be disposed in 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 eccentrically disposed at one end. Through such a configuration, the circuit board 20 can be assembled and coupled to the base 10 with a certain directionality. This is to guide the assembly of the first and second sensors 26 and 27 mounted on the circuit board 20 at the correct positions.

The first groove portion 2200 may be formed at a position corresponding to the first boss 2100 of the circuit board 20 . The first groove 2200 may be concavely formed on the circumferential surface of the circuit board 20 , and may be configured to correspond to the shape of the first boss 2100 . For example, when the first boss 2100 has a cylindrical shape, the first groove portion 2200 may be provided in a semicircular shape. Also, the first boss 2100 and the first groove portion 2200 may be disposed at a position not to interfere with the first coil 21 . The first groove portion 2200 may be formed on the second circuit board 22 and the circuit board 20 , or may be formed only on the circuit board 20 . Meanwhile, a third guide unit 3000 for guiding the positions of the inner surfaces of the base 10 and the circuit board 20 may be further included. However, the present invention is not limited thereto, and may be composed of only the third guide unit 3000 without the first and second guide units 1000 and 2000, and each of the guide units 1000, 2000 and 3000 is Any combination is possible as an independent configuration. The third guide unit 3000 includes a second boss 3100 protruding to a position close to the inner circumferential surface of the base 10 and a second boss 3100 formed in a position corresponding to the second boss 3100 of the circuit board 20 . 2 may include a groove 3200 . In this case, the third guide unit 3000 may be disposed to be symmetrical with respect to the centers of the base 10 and the circuit board 20 , but the location is not limited thereto. In addition, the base 10 and the circuit board 20 may be disposed on an imaginary line connecting the center and both corners. The second groove 3200 may be formed on the second circuit board 22 and the circuit board 20 , or may be formed only on the circuit board 20 .

Meanwhile, in the first lens driving device configured as described above, the base 10 and the bobbin 30 may be disposed to be spaced apart from each other by a predetermined distance from the initial position. In this case, the upper and lower elastic members may be formed in a flat state in which no preload is applied, or may be formed in a state in which a predetermined preload is applied. In this case, in an initial state in which the bobbin 30 is spaced apart from the base 10 by a predetermined distance, when power is applied, it may rise based on the initial position according to the direction of the applied current, for example, when a constant current is applied. Also, when a reverse current is applied, it may descend 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. In this case, the printed circuit board may have an image sensor mounted thereon and form a bottom surface of the camera module.

The bobbin 30 may include a lens barrel in which at least one lens is installed, and the lens barrel may be formed to be screw-coupled to the inside of the bobbin 30 . However, the present invention is not limited thereto, and although not shown, the lens barrel may be directly fixed to the inside of the bobbin 30 by a method other than screwing, or the one or more lenses may be integrally formed with the bobbin without a lens barrel. . The lens may be configured as one sheet, or two or more lenses may be configured to form an optical system.

In the base 10 , an infrared cut filter may be additionally installed at a position corresponding to the image sensor 11 , and may be coupled to the holder member 40 . In addition, the lower side of the holder member 40 may be supported. A separate terminal member may be installed on the base 10 to conduct electricity with the printed circuit board 10 , and it is also possible to integrally form the terminal using a surface electrode or the like. Meanwhile, the base 10 may function as a sensor holder to protect the image sensor, and in this case, a protrusion may be formed in a downward direction along the side surface of the base 10 . However, this is not an essential configuration, and although not shown, a separate sensor holder may be disposed under the base 10 to perform its role.

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

10; base 20; circuit board
21; first coil 25; escape
26; first sensor 27; second sensor
28; terminal part 30; bobbin
40; holder member 50; support member
1000; a first guide unit 1100; guide turn
1200; through 2000; second guide unit
2100; first boss 2200; first groove
3000; a third guide unit 3100; 2nd boss
3200; second groove

Claims (20)

Base;
a holder member disposed on the base;
a bobbin disposed in the holder member;
a first coil disposed on the bobbin;
a magnet disposed on the holder member and facing the first coil;
a first circuit board disposed on the upper surface of the base;
a second circuit board including a second coil facing the magnet and disposed on an upper surface of the first circuit board; and
an adhesive member for fixing the first circuit board to the base;
The bobbin includes a hole penetrating the bobbin in the optical axis direction,
The second circuit board includes a first hole formed at a position corresponding to the hole of the bobbin, and a groove recessed in an inner edge of the first hole of the second circuit board;
The base includes a first concave portion recessed in the base,
At least a portion of the adhesive member is disposed in the first concave portion of the base. According to claim 1,
A sensor coupled to the lower surface of the first circuit board and detecting the magnet,
The base includes a second concave portion recessed in the upper surface of the base,
the sensor is disposed in the second concave portion of the base;
The first concave portion is spaced apart from the second concave portion. 3. The method of claim 2,
The second concave portion is disposed between the first concave portion and an outer edge of the base. According to claim 1,
The first circuit board includes a body portion disposed between the upper surface of the base and the second circuit board, and a terminal portion extending from an outer edge of the body portion,
The body portion of the first circuit board includes a first hole formed at a position corresponding to the hole of the bobbin, and a first terminal formed on an inner edge of the first hole of the first circuit board,
The terminal portion of the first circuit board includes a second terminal and is disposed on the outer surface of the base,
The first terminal of the first circuit board is coupled to the second circuit board by soldering. 5. The method of claim 4,
The first concave portion of the base is disposed at a position corresponding to the first terminal of the first circuit board. 5. The method of claim 4,
The base includes a boss protruding from the upper surface of the base,
The first circuit board includes a groove recessed in the inner edge of the first hole of the first circuit board,
The boss of the base is disposed in the grooves of the first and second circuit boards. According to claim 1,
Each of the first circuit board and the second circuit board includes a second hole,
The base includes a guide protrusion protruding from the upper surface of the base and inserted into the second hole. According to claim 1,
the first concave portion of the base comprises four first concave portions;
The four first concave portions are symmetrical with respect to the center of the base. 9. The method of claim 8,
The base includes a hole formed at a position corresponding to the hole of the bobbin,
The four first concave portions are disposed between the hole of the base and the four corners of the base. According to claim 1,
A curvature of the groove of the second circuit board is different from a curvature of the first hole of the second circuit board. According to claim 1,
an upper elastic member connecting an upper portion of the bobbin and an upper portion of the holder member; and
and a lower elastic member connecting a lower portion of the bobbin and a lower portion of the holder member. 12. The method of claim 11,
and a wire connecting the upper elastic member and the first circuit board. 13. The method of claim 12,
The first circuit board may include a hole through which the wire passes. According to claim 1,
The second coil is a lens driving device formed of a patterned coil. Base;
a holder member disposed on the base;
a bobbin disposed in the holder member;
a first coil disposed on the bobbin;
a magnet disposed on the holder member and facing the first coil;
a first circuit board disposed on the upper surface of the base;
a second circuit board including a second coil facing the magnet and disposed on an upper surface of the first circuit board; and
an adhesive member for fixing the first circuit board to the base;
The second circuit board includes a first hole and a groove concavely formed on an inner circumferential surface of the first hole of the second circuit board,
The base includes a first concave portion recessed in the base,
At least a portion of the adhesive member is disposed in the first concave portion of the base. 16. The method of claim 15,
A sensor coupled to the lower surface of the first circuit board and detecting the magnet,
The base includes a second concave portion recessed in the upper surface of the base,
the sensor is disposed in the second concave portion of the base;
The first concave portion is spaced apart from the second concave portion. 17. The method of claim 16,
The second concave portion is disposed between the first concave portion and an outer edge of the base. 16. The method of claim 15,
The first circuit board includes a body portion disposed between the upper surface of the base and the second circuit board, and a terminal portion extending from an outer edge of the body portion,
The body portion of the first circuit board includes a first hole formed at a position corresponding to the hole of the bobbin, and a first terminal formed on an inner edge of the first hole of the first circuit board,
The terminal portion of the first circuit board includes a second terminal and is disposed on the outer surface of the base,
The first terminal of the first circuit board is coupled to the second circuit board by soldering. 19. The method of claim 18,
The first concave portion of the base is disposed at a position corresponding to the first terminal of the first circuit board. printed circuit board;
an image sensor disposed on the printed circuit board;
The lens driving device of any one of claims 1 to 19 disposed on the printed circuit board; and
A camera module including a lens coupled to the bobbin of the lens driving device.

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