KR20240067859A - Motor for actuating lens - Google Patents

Abstract

The embodiment includes a mover including a first coil portion; A magnet portion whose inner side faces the outer side of the first coil portion to move the mover, a housing where the magnet portion is disposed, and a second portion disposed to face the lower side of the magnet portion to move the housing. A driving unit including a coil unit; A substrate including a substrate portion electrically connected to the second coil portion, a terminal portion formed by bending downward from a side of the substrate portion, and a fixing portion on at least one side extending from the terminal portion; a base that supports the movable unit and the driving unit and has an extension portion formed on a lower side protruding to correspond to the fixed unit; And a cover can fastened to the base to accommodate the mover and the driving unit. A lens driving motor including a can be provided.

Description

Lens driving motor{MOTOR FOR ACTUATING LENS}

Embodiments of the present invention relate to a lens driving motor with an improved structure.

As various types of portable terminals become widespread and wireless Internet services become commercialized, consumer demands related to portable terminals are also diversifying. Accordingly, various types of additional devices are being installed on portable terminals.

Among them, the representative camera module is one that can take a photo or video of a subject, store the image data, and then edit and transmit it as needed.

Recently, the demand for small camera modules has been increasing for use in a variety of multimedia fields such as laptop-type personal computers, camera phones, PDAs, smart devices, and toys, as well as for image input devices such as surveillance cameras and information terminals of video tape recorders. .

The camera module requires a board connection to efficiently supply power to the actuator for the anti-shake function, but the reliability of the board may be problematic.

(Patent Document 1) JP2013-024944 A

The embodiment proposes a structure that can securely secure the terminal portion, thereby providing a lens driving motor with improved reliability.

The embodiment includes a mover including a first coil portion; A magnet portion whose inner side faces the outer side of the first coil portion to move the mover, a housing where the magnet portion is disposed, and a second portion disposed to face the lower side of the magnet portion to move the housing. A driving unit including a coil unit; A substrate including a substrate portion electrically connected to the second coil portion, a terminal portion formed by bending downward from a side of the substrate portion, and a fixing portion on at least one side extending from the terminal portion; a base that supports the movable unit and the driving unit and has an extension portion formed on a lower side protruding to correspond to the fixed unit; And a cover can fastened to the base to accommodate the mover and the driving unit. A lens driving motor including a can be provided.

Meanwhile, the embodiment includes a lens unit; a mover on which the lens unit is fixed and which includes a first coil unit; A magnet portion whose inner side faces the outer side of the first coil portion to move the mover, a housing where the magnet portion is disposed, and a second portion disposed to face the lower side of the magnet portion to move the housing. A driving unit including a coil unit; A substrate including a substrate portion electrically connected to the second coil portion, a terminal portion formed by bending downward from a side of the substrate portion, and a fixing portion on at least one side extending from the terminal portion; a base that supports the movable unit and the driving unit and has an extension portion formed on a lower side protruding to correspond to the fixed unit; and a cover can fastened to the base to accommodate the mover and the driving unit.

Additionally, the terminal portion may be electrically connected to the substrate portion, and the fixing portion may be made of a non-conductive material extending from the terminal portion.

Additionally, the fixing part may have at least one through hole.

Additionally, the terminal portion may be formed to be equal to or longer than the height of the extension portion.

Additionally, a seating groove in which the terminal portion is seated may be formed on a side of the base, and the extension portion may be formed on a lower side of the seating groove.

In addition, the extension part may further include a concave groove through which adhesive can flow into the side or lower side in contact with the fixing part.

Additionally, the camera module is disposed on the lower side of the base and may further include a printed circuit board electrically connected to the terminal portion.

Additionally, a soldering point may be formed on the printed circuit board to electrically connect the terminal to the terminal of the terminal.

Additionally, an image sensor may be mounted on the printed circuit board.

According to an embodiment of the present invention, a lens driving motor or camera module with improved reliability can be implemented by improving the structure of the terminal portion and the base.

1 is an exploded perspective view of a lens driving motor according to an embodiment of the present invention.
Figure 2 is a perspective view of a substrate according to an embodiment of the present invention.
Figure 3 is a perspective view of a base according to an embodiment of the present invention.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the attached drawings.

Unless otherwise specified, all terms in this specification have the same general meaning as understood by those skilled in the art, and if a term used in this specification conflicts with the general meaning of the term, the definition used in this specification shall apply.

However, the invention described below is only for explaining embodiments of the present invention and is not intended to limit the scope of the present invention, and the same reference numbers used throughout the specification indicate the same elements.

Hereinafter, the lens driving motor of the embodiment will be described in detail with reference to the drawings.

Figure 1 is an exploded perspective view of a lens driving motor according to an embodiment of the present invention, Figure 2 is a perspective view of a substrate according to an embodiment of the present invention, and Figure 3 is a perspective view of a base according to an embodiment of the present invention.

Referring to FIG. 1, the lens driving motor according to the embodiment may largely include a mover 200, a driving unit 300, and a cover can 100, and may further include an elastic unit 600.

The cover can 100 is fastened to the base 350, which will be described later, to accommodate the mover 200, the drive unit 300, and the elastic unit 600, and can form the appearance of a lens driving motor.

As shown in FIGS. 1 and 3, the cover can 100 may be formed in the shape of a rectangular parallelepiped with an opening formed on the upper side and an open lower side. However, the shape of the cover can 100 is It is not limited.

In short, the shape of the cover can 100 may be a quadrangular shape or an octagonal shape when viewed from the top, or may be implemented in any other shape.

The inner surface of the cover can 100 can be combined with the base 350, which will be described later, and can protect internal components from external impact and have a function of preventing penetration of external contaminants.

In addition, the cover can 100 can also perform the function of protecting the components of the camera module from external radio wave interference caused by mobile phones, etc. Therefore, the cover can 100 may be made of a metal material such as iron or aluminum, and may be plated with a metal such as nickel to prevent corrosion. Additionally, the cover can 100 may be made of a magnetic material and may function as a yoke.

This cover can 100 can be implemented as a yoke part itself, which will be described later, or it can be fixed by molding the yoke part on the inside. In an embodiment, an inner yoke (not shown) bent toward the inside of the cover can 100 may be formed on the inside of the upper side of the cover can 100. This inner yoke may be located in the concave inlet 213 formed in the bobbin 210, which will be described later.

In this case, the inner yoke may be disposed at a corner around the upper side opening of the yoke portion, or may be disposed on the side, and the concave portion 213 of the bobbin 210 may be formed at a corresponding position.

In addition, the cover can 100 may be formed with a seating portion 110 whose portion corresponding to the seating groove 354 extends downward at a predetermined distance on one side that is fastened to the base 350, which will be described later. Due to the portion 110, when the cover can 100 is inserted into the base 350, the terminal portion 342 of the substrate 340, which will be described later, can be naturally bent. Meanwhile, the terminal portion 342 of the substrate 340, which will be described later, may be bent in advance and placed between the seating groove 354 of the base 350 and the seating portion 110 of the cover can 100. The seating groove 354 may be a groove.

The mover 200 can be moved by accommodating a lens or lens unit (not shown), which will be described later. This mover 200 may include a bobbin 210 and a first coil portion 220.

The bobbin 210 may accommodate a lens unit (not shown) inside. Specifically, the bobbin 210 is combined with a lens unit, which will be described later, to fix the lens unit. The method of combining the lens unit and the bobbin 210 is to fasten by forming threads on the inner peripheral surface of the bobbin 210 and the outer peripheral surface of the lens unit, respectively. A threaded connection method can be used, but it can also be connected using a non-threaded method using adhesive. Of course, even in the threaded connection method, adhesive can be used after threading to achieve a more robust installation.

Additionally, a guide portion 211 may be formed on the outer peripheral surface of the bobbin 210 to guide the winding or mounting of the first coil portion 220, which will be described later. This guide portion 211 may be formed integrally with the outer surface of the bobbin 210, and may be formed continuously along the outer surface of the bobbin 210, or may be formed spaced apart at predetermined intervals as shown. there is.

In addition, an upper spring 610 and/or lower spring 620 are provided on the upper and/or lower side of the bobbin 210 to support the bobbin 210 on the upper side of the base 350, which will be described later. An inner fastening protrusion 212 may be formed.

In addition, the bobbin 210 is formed on the outer peripheral surface so that the inner yoke of the cover can 100 described above can be located between the bobbin 210 and the first coil portion 220 wound on the bobbin 210. It may further include a concave inlet 213.

The mover 200 may include a first coil portion 220, and the first coil portion 220 may be disposed on an outer surface of the bobbin 210. Specifically, the first coil unit 220 may be guided by the guide unit 211 of the bobbin 210 and wound on the outer surface of the bobbin 210, and the pre-wound coil unit may be guided by the guide unit 211. ) can also be installed. Alternatively, four individual coils (not shown) may be disposed at 90° intervals on the outer surface of the bobbin 210. This first coil unit 220 can form an electromagnetic field by receiving power applied from a printed circuit board (not shown), which will be described later.

The driving unit 300 moves the mover 200, and the driving unit 300 includes a housing 310, a magnet unit 320, a second coil unit 330, a substrate 340, and a base 350. may include.

The housing 310 may be formed in a shape corresponding to the inner surface of the cover can 100.

In an embodiment, the housing 310 is supported on the base 350 and can accommodate the bobbin 210 inside, and can be formed in a hexahedral shape corresponding to the shape of the cover can 100. , the lower side is open to support the movable part or bobbin 210.

In addition, the housing 310 may include a magnet part fastening groove 311 or a hole formed on a side surface in a shape corresponding to the magnet part 320 so that the magnet part 320, which will be described later, can be placed. These magnet part fastening grooves 311 or holes may be formed in the housing 310 in numbers corresponding to the magnets 320a, 320b, 320c, and 320d of the magnet part 320, which will be described later.

Additionally, the magnet part fastening groove 311 or hole may be formed at each corner of the housing 310 as shown, but may also be formed on each inner surface of the housing 310.

In the embodiment, the magnet part fastening groove 311 accommodates the front or partial surface of each magnet (320a, 320b, 320c, 320d) excluding the surface (inner surface) facing the first coil part 220. It can be formed to do so.

These magnet part fastening grooves 311 are formed to correspond to the shape and/or size of the magnets (320a, 320b, 320c, 320d), so as to maintain the assembly tolerance for the housing 310 of the magnets (320a, 320b, 320c, 320d). can be prevented from occurring. In addition, an adhesive such as epoxy can be applied to some or all of the contact surfaces of the magnet fastening groove 311 or the magnets 320a, 320b, 320c, and 320d to achieve more robust fastening and/or fastening in an accurate position. .

In the embodiment, the magnets 320a, 320b, 320c, and 320d have a structure that can be firmly and accurately fixed to the housing 310, so that electromagnetic interaction with the first coil unit 220 becomes accurate and magnetic force By minimizing foreign matter adhesion, an excellent actuator can be realized.

Additionally, the housing 310 may be formed of an insulating material, and may be made of an injection molded product considering productivity.

Additionally, the housing 310 is a movable part for OIS operation and may be placed at a certain distance from the cover can 100. In this case, the bobbin 210 can be moved in the optical axis direction by the interaction between the first coil unit 220 and the magnet unit 320, and the housing 310 is connected to the magnet unit 320 as will be described later. Due to the interaction of the second coil unit 330, it may be moved in a direction perpendicular to the optical axis direction and/or in a horizontal direction.

In addition, at least two stoppers 312 that protrude from the upper side of the housing 310 and can absorb shock in the event of an external impact may be formed at a predetermined distance apart. This stopper 312 may be formed integrally with the housing 310, and may or may not be formed on the bobbin 210.

The magnet unit 320 may be disposed in the housing 310 to face the first coil unit 220, that is, to have its inner surface face the outer surface of the first coil unit 220. Specifically, the magnet portion 320 may be mounted on the housing 310 with adhesive or the like, and may be mounted at equal intervals at four corners within the housing 310 to promote efficient use of the internal volume. . Alternatively, the magnet unit 320 may be mounted on four inner surfaces of the housing 310 to face the first coil unit 220.

The shape of each magnet (320a, 320b, 320c, 320d) forming the magnet portion 320 may be formed in a trapezoidal pillar shape as shown, but may be in each pillar shape, such as a triangular pillar shape, a square pillar shape, etc. In a pillar shape, the surface facing the first coil portion 220 may be formed to include some curves. Additionally, the magnets 320a, 320b, 320c, and 320d may be processed to have partially curved edges during processing. Magnet fastening grooves 311 corresponding to the shapes of each of the magnets 320a, 320b, 320c, and 320d may be formed in the housing 310.

The second coil unit 330 may be disposed on the base 350 to face the magnet unit 320 in order to move the housing. Specifically, the second coil unit 330 may be mounted on a substrate 340 provided on the upper side of the base 350, which will be described later, or may be formed on the substrate 340, and may be formed at the center to allow light from the lens unit to pass through. A through hole 331 may be formed in .

Meanwhile, considering that the height in the z-axis direction, which is the optical axis direction, is lowered in order to miniaturize the lens driving motor, the second coil unit 330 may be formed of an FP coil, which is a flat patterned coil. there is.

The substrate 340 may be implemented as a Flexible Printed Circuit Board (FPCB) considering that the height in the z-axis direction, which is the optical axis direction, is reduced in order to miniaturize the lens driving motor.

In this case, the substrate 340 includes a substrate portion 344 disposed between the base 350 and the second coil portion 330, which will be described later, and a substrate portion 344 that is bent downward from the side of the substrate portion 344. It may include a terminal portion 342, and a fixing portion 342b extending to one or both sides of the terminal portion 342 may be disposed as shown in FIG. 2. The surface of this fixing part 342b may be formed of a non-conductive material. The substrate portion 344 may be a body portion.

The terminal portion 342 may be formed to be shorter or longer than the height of the side of the base 350 to ensure effective electrical contact with a printed circuit board (not shown), which will be described later. If it is short, the space can be filled with soldering, and if it is long, it can be overlapped and electrically connected. Additionally, the fixing part 342b may be formed to be shorter or longer than the height of the extension part 357 of the base 350, which will be described later.

The substrate portion 344 and the terminal portion 342 are generally patterned or plated to have electrical conductivity. Specifically, the terminal portion 342 includes a conductive region 342a of the terminal portion 342 where a plurality of terminals 342c electrically connected to a printed circuit board (not shown) to be described later are disposed, and a conductive region 342a. ) may be formed on one or both sides and coated to have non-conductive properties of the substrate 340, or may be divided into a fixing portion 342b in which a non-conductive base material is exposed.

This fixing part 342b is firmly fixed in whole or in part to the extension part 357 of the base 350, which will be described later, and as a result, deformation of the terminal part 342 can be prevented. For firm fixation, at least one through hole 342d may be formed in the fixing part 342b, and adhesive is injected into these holes to connect the extension part 357 of the base 350 and the fixing part 342b. ) can achieve solid fixation. The shape of the through hole 342d is shown as a circle, but is not limited thereto. Alternatively, concave grooves 357a and/or 357b may be formed in the extension portion 357 of the base 350 corresponding to the through hole 342d, as shown in FIG. 3.

The terminal portion 342 may be bent downward (in the base direction) to be soldered to a separate printed circuit board, which will be described later. The terminal portion 342 may be bent at a right angle, or the cover can 100 may be bent at a right angle to the base, which will be described later. It is bent when inserted into 350, or is bent at an acute angle away from the cover can 100 as it moves downward, thereby preventing short circuits caused by solder that may occur during soldering.

In addition, the substrate 340 may be provided on the upper side of the base 350, which will be described later, to apply power to the second coil unit 330, and the through hole 331 of the second coil unit 330 A corresponding through hole 341 is formed.

A Hall sensor unit 345 may be mounted on this substrate 340. Specifically, the Hall sensor unit 345 senses the strength and/or phase of the magnetic field to detect the movement of the magnet unit 320 and can precisely control the housing. In this case, the board 340 may further include a Hall sensor terminal unit 343 for applying power to the Hall sensor unit 345.

In addition, the Hall sensor unit 345 may be provided in a straight line with the magnet unit 320 based on the optical axis direction, and since displacement of the x-axis and y-axis must be detected, the Hall sensor unit 345 It may include two Hall sensors provided at two adjacent corners of the substrate 340, respectively. That is, each of the Hall sensors located below the two magnets adjacent to each other in a right-angled direction individually senses the positions of the magnets 320a, 320b, 320c, and 320d driven in the x-axis or y-axis, and the magnet unit 320 This is because it is easy to calculate the movement amount in a complex manner.

Additionally, the Hall sensor unit 345 may be additionally disposed on the outer surface of the bobbin 210. In this case, feedback AF can be implemented by detecting the position of the bobbin in the z-axis direction. Additionally, the Hall sensor unit 345 may be placed on the bobbin 210 inside the first coil unit 220. In this case, the Hall sensor unit 345 is hidden by the first coil unit 220. It may not be visible from the outside. Additionally, the Hall sensor unit 345 may be disposed outside the first coil unit 220. One of the Hall sensor unit 345 disposed on the substrate 340 and the additional Hall sensor unit disposed on the bobbin 210 may be referred to as a 'first Hall sensor' and the other may be referred to as a 'second Hall sensor'. .

This Hall sensor unit 345 may be provided closer to the first coil unit 220 or the second coil unit 330 than the magnet unit 320, but the strength of the magnetic field formed in the magnet unit 320 Considering that the strength of the electromagnetic field formed in the coil is several hundred times greater, the electromagnetic field of the first coil unit 220 or the second coil unit 330 may not be considered when detecting the movement of the magnet unit 320. there is.

Due to the independent or organic interaction of the first coil unit 220 and/or the second coil unit 330 and the magnet unit 320, the lens unit, which will be described later, moves in all directions to focus the image focus of the subject. , hand shake, etc. can be corrected.

Here, adjusting the focus of the image refers to the AF (Auto Focusing) function when moving the lens unit in the z-axis direction, which is the optical axis, for close or long-distance focusing of the subject, or perpendicular to the z-axis direction for hand shake correction. It may refer to an OIS (Optical Image Stabilization) function that moves the lens unit in the x- and y-axis directions, or a function that can simultaneously perform the A.F. function and the OIS function.

That is, the embodiment may be implemented as an Auto Focusing (AF) type or as an Optical Image Stabilization (OIS) type.

Although the above-described embodiment described the OIS type, it may be implemented as the former A.F. (Auto Focusing) type, and in this case, the embodiment may not include the second coil unit 330 and the substrate 340. there is.

The base 350 supports the mover 200 and the driving unit 300, and a through hole 351 corresponding to the lens unit is formed at the center. In addition, the base 350 may be formed with a circular recess (not shown) in the center recessed downward so that the bobbin 210 can be spaced apart. As shown in FIG. 3, the base 350 may include a step portion 359 protruding from the outer peripheral surface of the base 350.

In addition, the base 350 may be formed with one or more fixing protrusions 352 that protrude from the upper edge and come into contact with or combine with the inner surface of the cover can 100, and these fixing protrusions 352 are formed on the cover can 100. It guides the fastening of the can 100 easily and at the same time allows for firm fixation after fastening.

In addition, the base 350 may have a seating groove 354 formed on a side surface of the base 350 in which the terminal portion 342 is seated, and the terminal portion 342 may be formed to be recessed on at least one side surface. Additionally, the seating groove 354 may be formed at a right angle or an acute angle downward to correspond to the bending angle of the terminal portion 342.

In addition, the base 350 may be formed with a Hall sensor receiving groove 353 corresponding to each Hall sensor of the Hall sensor unit 345. In this case, the Hall sensor is mounted on the lower side of the board 340. This has the advantage of miniaturizing the internal height.

Additionally, an extension portion 357 may be formed on the lower side of the base 350 to protrude at a position corresponding to the inner side of the fixing portion 342b. Since this extension part 357 can protrude inward and supports the fixing part 342b from the inside, it can effectively prevent bending or cracking of the terminal part 342 of the board 340. You can.

Additionally, since the terminal portion 342 can be seated in the seating groove 354, the extension portion 357 can be formed on the lower side of the seating groove 354. Additionally, since the terminal portion 342 must physically contact the printed circuit board to be electrically connected to the printed circuit board, the extension portion 357 may be formed to be the same or smaller than the terminal portion 342.

In addition, in order to firmly support the fixing part 342b, this extension 357 has concave grooves 357a and/or 357b through which adhesive can flow into the side and/or lower side in contact with the fixing part. This can be formed.

In addition, the lens driving motor can be combined with a camera module, and in this case, the base 350 can perform a sensor holder function to protect an image sensor (not shown), which will be described later, and a filter (not shown) is provided. can be placed. In this case, the filter may be mounted in the through hole 351 formed in the center of the base 350, and an infrared ray filter or a blue filter may be provided.

Here, the filter (not shown) may be formed of, for example, a film material or a glass material, and an infrared blocking coating material, etc. may be disposed on a flat optical filter such as a cover glass for protecting the imaging surface. Additionally, in addition to the base 350, a separate sensor holder (not shown) may be located below the base 350.

Meanwhile, in the case where the filter is installed on the outside of the lens, it is of course possible to block infrared rays by coating the surface of the lens without constructing a separate filter.

Meanwhile, the driving unit according to an embodiment of the present invention may further include an elastic unit 600.

The elastic unit 600 may include an upper spring 610, a lower spring 620, and a side spring 630.

The upper spring 610 and lower spring 620 may be made of separate springs disposed on each side of the housing 310, but for production efficiency, a leaf spring in the shape of a single plate bent and cut It is desirable to consist of

The upper spring 610 is disposed at the upper end of the housing 310, and protrudes a predetermined width in the optical axis direction from an opening formed at the upper end, and the protruding portion supports the upper end side of the bobbin 210. That is, the upper spring 610 is fastened to the upper surface of the housing 310 and the upper surface of the bobbin 210 to support the bobbin 210, and is used to provide a return force when the bobbin 210 moves upward. It is provided at the upper part of (310).

Specifically, the upper spring 610 includes a first upper spring 610a through which power applied from a printed circuit board, which will be described later, flows in, and a second upper spring through which the applied power flows through the first coil pattern portion. Includes (610b).

The first upper spring 610a and the second upper spring 610b may be formed as leaf springs in a symmetrical or asymmetrical shape about the optical axis. They may also be formed as a single leaf spring, but may be separately formed for input/output of power. It is preferably formed with a leaf spring.

Each of the first upper spring 610a and the second upper spring 610b includes an outer portion 611 fastened to the housing 310, an inner portion 612 fastened to the bobbin 210, and the outer portion ( It includes a connection portion 613 that electrically connects 611) and the inner portion 612. Here, the connection portion 613 may be formed of at least one bending portion.

To fasten the upper spring 610, at least one outer fastening protrusion 313 is formed on the upper side of the housing 310, and the outer fastening protrusion 313 is formed on the outer part 611 corresponding to the outer fastening protrusion 313. An outer fastening hole 611a may be formed. Additionally, an outer protrusion 611b is formed on the outer portion 611 to be electrically connected to two side springs 630, which will be described later.

Meanwhile, in order to fasten the upper spring 610, at least one inner fastening protrusion 212 is formed on the upper side of the bobbin 210, and the inner fastening protrusion 212 is provided on the inner part 612. A correspondingly formed inner fastening hole 612a may be formed.

In addition, the inner portion 612 of each of the first upper spring 610a and the second upper spring 610b is electrically connected to one end 221 and the other end 222 of the coil wound around the first coil unit 220. Inner protrusions 612b for connection are formed, respectively.

The outer protrusion 611b and the side spring 630, the inner protrusion 612b, and one end 221 and the other end 222 of the coil may be electrically coupled to each other by soldering.

Meanwhile, the outer portion 611 of the lower spring 620 is supported on the upper surface of the base 350, and the inner portion 612 supports the lower end of the bobbin 210. Since the lower spring 620 does not input or output power from the printed circuit board, which will be described later, it can be formed as a single leaf spring.

One side of the side spring 630 is fastened to the side of the housing 310, and the other side is fastened to the side of the base 350. The side spring 630 may be comprised of four side springs spaced apart from each other at an angle of 90°.

To attenuate vibration in the x and y axes, a damper member (not shown) may be applied to the joint surface of the side spring 630 and the housing 310 and/or base 350. This damper member may be implemented as a sol or gel-type epoxy material, and may be applied between the side spring 630 and the housing 310 and/or base 350 to absorb shock.

Meanwhile, the lens driving motor according to the embodiment may be mounted on a camera module, and such a camera module can be used in a variety of multimedia fields such as mobile phones or laptop-type personal computers, camera phones, PDAs, smart devices, and toys, and even surveillance. It may be provided in an image input device such as an information terminal of a camera or video tape recorder.

When the lens driving motor according to the embodiment is provided in the camera module, the camera module may be configured to further include a lens unit, a printed circuit board, and/or an image sensor, not shown.

The lens unit not shown may be a lens barrel, but is not limited to this, and may include any holder structure capable of supporting a lens. The embodiment will be described by taking the case where the lens unit is a lens barrel as an example.

The lens unit is installed on the upper side of the printed circuit board, which will be described later, and is placed at a position corresponding to the image sensor. This lens unit is provided with one or more lenses.

The printed circuit board (not shown) may have an image sensor (not shown) mounted in the center of the upper side, and various elements for driving the camera module may be mounted. In addition, in order to apply power to drive the lens driving motor according to the embodiment, the printed circuit board is connected to the terminal part 342, the lower spring 620, the upper spring 610, or directly the first coil part ( 220) and/or is electrically connected to the second coil unit 330.

Additionally, soldering points may be formed on the printed circuit board to apply power to the terminals of the terminal portion 342.

From the above description, those skilled in the art will be able to see that various changes and modifications can be made without departing from the technical spirit of the present invention, and the technical scope of the present invention is not limited to the contents described in the embodiments, but rather the patent claims. It must be determined by the scope and equivalent scope.

100: Cover can 200: Movable
210: bobbin 220: first coil part
300: driving unit 310: housing
320: Magnet unit 330: Second coil unit
340: substrate 350: base

Claims (14)

Base;
a cover can disposed on the base and including a top plate and a side plate;
A bobbin disposed within the cover can;
a first coil disposed on the bobbin;
a substrate disposed on the base; and
It includes a second coil formed on the substrate,
The base includes a first protruding area and a second protruding area that protrude from the first outer surface of the base in a direction perpendicular to the optical axis direction,
The first protruding area and the second protruding area overlap with the first portion of the side plate of the cover can in the optical axis direction,
The substrate includes a body portion disposed on an upper surface of the base, and a first terminal portion disposed between the first protruding area and the second protruding area of the base,
The cover can includes a seating portion that protrudes below the first portion of the side plate of the cover can,
The first terminal portion of the substrate is bent from the body portion of the substrate and disposed to pass between the base and the seating portion of the cover can. According to paragraph 1,
a housing disposed between the cover can and the bobbin;
A magnet disposed in the housing; and
Includes a first Hall sensor that detects the magnet,
The first Hall sensor is coupled to the body portion of the substrate,
The first terminal portion of the substrate includes a Hall sensor terminal electrically connected to the first Hall sensor. According to paragraph 1,
A lens driving motor wherein at least a portion of the first terminal portion is exposed from the cover can. According to paragraph 1,
A lens driving motor wherein the first terminal portion of the substrate is fixed to the base with an adhesive. According to paragraph 1,
The base includes a third protruding area and a fourth protruding area protruding from a second external surface disposed on an opposite side of the first external surface of the base,
The third protruding area and the fourth protruding area overlap with the second portion of the side plate of the cover can in the optical axis direction,
The substrate extends from the body portion and includes a second terminal portion disposed between the third protruding region and the fourth protruding region of the base. According to paragraph 1,
A lens driving motor including a second Hall sensor that detects the position of the bobbin in the optical axis direction. According to paragraph 1,
The first protruding area and the second protruding area are located closer to a corner of the base than the first terminal. According to paragraph 1,
The base is a lens driving motor including a first extension part and a second extension part protruding from a lower surface of the base in the optical axis direction. According to paragraph 2,
an upper spring coupled to the upper surface of the bobbin and the housing; and
A lens driving motor including a side spring electrically connected to the upper spring. According to paragraph 1,
The first terminal portion of the substrate is bent in a direction from the body portion of the substrate to the seating portion of the cover can. Base;
a cover can disposed on the base and including a top plate and a side plate;
A bobbin disposed within the cover can;
a housing disposed between the cover can and the bobbin;
a first coil disposed on the bobbin;
a substrate disposed on the base;
a second coil formed on the substrate; and
Including a magnet disposed in the housing,
The base includes a first protruding area and a second protruding area protruding from an outer surface of the base,
The first protruding area and the second protruding area overlap with the first portion of the side plate of the cover can in the optical axis direction,
The substrate includes a body portion on which the second coil is formed, and a terminal portion disposed between the first protruding area and the second protruding area of the base,
The cover can includes a seating portion that protrudes below the first portion of the side plate of the cover can,
A lens driving motor wherein the terminal portion of the substrate is bent in the direction of placement of the seating portion of the cover can from the body portion of the substrate. printed circuit board;
an image sensor disposed on the printed circuit board;
The lens driving motor according to any one of claims 1 to 11 disposed on the printed circuit board; and
A camera module including a lens coupled to the bobbin of the lens driving motor. A portable terminal including the camera module of claim 12. Base;
a cover can disposed on the base and including a top plate and a side plate;
A bobbin disposed within the cover can;
a first coil disposed on the bobbin;
a substrate disposed on the base; and
A lens driving motor including a second coil formed on the substrate.