KR102429892B1 - Lens driving unit and camera module including the same - Google Patents

Abstract

One embodiment of the lens driving device, the housing for supporting the first magnet; a bobbin disposed inside the first magnet, provided with a first coil on an outer circumferential surface, and moving in the housing; a base disposed under the bobbin; an upper elastic member provided on an upper side of the bobbin; and a support member disposed on the side surface of the housing and having a lower side coupled to the base, wherein a portion of the upper side of the support member is coupled to the upper elastic member.

Description

Lens driving unit and camera module including the same}

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

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

In recent years, the development of IT products such as a mobile phone, a smart phone, a tablet PC, and a notebook equipped with a miniature digital camera has been actively carried out.

In the case of a camera module mounted on a small electronic product such as a smartphone, a shock may be frequently applied to the camera module during use, and the camera module may be slightly shaken according to a user's hand shake while shooting. In consideration of such a point, the development of a technology for additionally installing a hand-shake correction means in a camera module is recently required.

When a mechanism, a part, etc. implementing such hand shake correction receives an external shock, it may be separated from the camera module or a lens driving device included therein, and this may cause malfunction or malfunction of the camera module, so improvement is required.

Accordingly, the embodiment relates to a lens driving device having a structure in which a mechanism, parts, etc. for implementing handshake correction are firmly coupled, and a camera module including the same.

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

One embodiment of the lens driving device, the housing for supporting the first magnet; a bobbin disposed inside the first magnet, provided with a first coil on an outer circumferential surface, and moving in the housing; a base disposed under the bobbin; an upper elastic member provided on an upper side of the bobbin; and a support member disposed on the side surface of the housing and having a lower side coupled to the base, wherein a portion of the upper side of the support member is coupled to the upper elastic member.

Another portion of the upper side of the support member may be coupled to the housing.

The coupling between the support member and the upper elastic member or the housing is coupled with an adhesive, and the adhesive may be an epoxy or a thermosetting bond.

The support member may include: a first coupling part coupled to the housing and having the through hole formed therein; a second coupling part coupled to the base; a first elastic deformation portion extending from the first coupling portion and provided as a pair arranged to be symmetrical to each other; and a second elastic deformation portion extending from the second coupling portion and provided as a pair symmetrical to each other.

The first elastically deformable portion and the second elastically deformable portion may be connected to each other and further include a connecting portion provided as a pair arranged to be symmetrical to each other.

The housing may have a second protrusion formed to protrude in a first direction from an upper surface and to which a portion of the first coupling portion where the through hole is formed is adhered.

An embodiment of the lens driving device may further include a first protrusion formed to protrude downward from the first coupling part, and the first protrusion may be adhered to a side surface of the housing.

A fourth protrusion for bonding to the first protrusion may be formed on a side surface of the housing at a portion opposite to the first protrusion.

The first coupling part may be adhered to the upper elastic member.

A bonding part for coupling the first coupling part and the upper elastic member may be formed between a portion of the first coupling part and the upper surface of the upper elastic member.

In the upper elastic member, a third protrusion may be formed in a portion opposite to the lower end of the first coupling portion.

The third protrusion may be a part of the adhesive applied to the first coupling part that flows and is cured in a stagnant state to couple the first coupling part and the upper elastic member.

A bonding part may be formed between the end of the first coupling part and the upper surface of the upper elastic member.

The support member and the upper elastic member may be formed of a metal material.

The base may have at least one seating groove to which the second coupling part is coupled.

The support member may be provided in four pieces, each disposed to surround the bobbin, and disposed to be symmetrical to each other.

A portion where the support member is disposed on the side surface of the housing may be formed with an inclined surface such that a separation distance from the support member increases in a downward direction.

Another embodiment of the lens driving device, the housing for supporting the first magnet; a bobbin disposed inside the first magnet, provided with a first coil on an outer circumferential surface, and moving in the housing; a base disposed under the bobbin; an upper elastic member provided on an upper side of the bobbin; and a support member disposed on a side surface of the housing and having a lower side coupled to the base, wherein an upper side of the support member is coupled to the upper elastic member by an adhesive.

The support member may include: a first coupling part coupled to the housing; a second coupling part coupled to the base; a first elastic deformation portion extending from the first coupling portion and provided as a pair arranged to be symmetrical to each other; a second elastic deformation portion extending from the second coupling portion and provided as a pair symmetrically disposed; and a connecting part provided as a pair to connect the first elastically deformable part and the second elastically deformable part to each other and to be symmetrical to each other, wherein the first coupling part is disposed between the end of the first coupling part and the upper surface of the upper elastic member. and a bonding part for coupling the upper elastic member may be formed.

The bonding part may be formed of an epoxy or thermosetting bond.

One embodiment of the camera module, the image sensor; and the lens driving device.

In an embodiment, by forming a through hole in a portion where the first coupling part of the support member is bonded to the housing, and bonding the support member and the housing to each other with an adhesive, the bonding strength between the support member and the housing can be increased. there is

In addition, since the support member made of the same material, that is, a metal material, and the upper elastic member are coupled with an adhesive, the bonding strength of the support member in the lens driving device may be significantly increased.

Therefore, in the embodiment, the bonding strength of the supporting member in the lens driving device is weak, and the supporting member may come off from the housing due to repeated external shocks, thereby remarkably reducing the occurrence of malfunctions and failures of the lens driving device. Therefore, there is an effect of securing the mechanical reliability of the lens driving device.

1 is a perspective view illustrating a lens driving device according to an exemplary embodiment.
2 is an exploded perspective view illustrating a lens driving device according to an exemplary embodiment.
3 is a perspective view showing a state in which a support member according to an embodiment is disposed.
4 is a front view showing a support member according to an embodiment.
5 is a front view illustrating a state in which a support member according to an embodiment is disposed.
6 is a partial perspective view illustrating a state in which a support member according to an embodiment is disposed.
FIG. 7 is a view showing an embodiment of part A of FIG. 6 .
FIG. 8 is a view showing another embodiment of part A of FIG. 6 .

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

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

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

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

In addition, a Cartesian coordinate system (x, y, z) may be used in the drawings. In the drawings, the x-axis and y-axis mean a plane perpendicular to the optical axis. For convenience, the optical-axis direction (z-axis direction) may be referred to as the first direction, the x-axis direction as the second direction, and the y-axis direction as the third direction. .

An image stabilization device applied to a small camera module of a mobile device such as a smartphone or tablet PC is designed to prevent the outline of the captured image from being clearly formed due to the vibration caused by the user's hand shake when shooting still images. means the device is configured.

In addition, the auto-focusing device is a device for automatically focusing the image of the subject on the image sensor (not shown) surface. Such an image stabilization device and auto-focusing device can be configured in various ways. In the embodiment, the optical module composed of a plurality of lenses is moved in the first direction or is moved in a direction perpendicular to the first direction to correct the camera shake. An operation and/or an auto-focusing operation may be performed.

As shown in FIG. 2 , the lens driving device according to the embodiment may include a movable part. In this case, the movable unit may perform the functions of auto-focusing the lens and correcting hand shake. The movable part may include a bobbin 110 , a first coil 120 , a first magnet 130 , a housing 140 , an upper elastic member 150 , and a lower elastic member 160 .

The bobbin 110 is disposed inside the first magnet 130 , and a first coil 120 is provided on an outer circumferential surface of the first magnet 130 , so that electromagnetic interaction between the first magnet 130 and the first coil 120 . can be installed in the inner space of the housing 140 so as to be reciprocally movable in the first direction. A first coil 120 may be installed on the outer peripheral surface of the bobbin 110 to enable electromagnetic interaction with the first magnet 130 .

In addition, the bobbin 110 is elastically supported by the upper and lower elastic members 150 and 160, and moves in the first direction to perform an auto-focusing function.

The bobbin 110 may include a lens barrel (not shown) in which at least one lens is installed. The lens barrel may be coupled to the inside of the bobbin 110 in various ways.

For example, a female thread may be formed on the inner peripheral surface of the bobbin 110 , and a male thread corresponding to the thread may be formed on the outer peripheral surface of the lens barrel, and the lens barrel may be coupled to the bobbin 110 by screwing them. However, the present invention is not limited thereto, and the lens barrel may be directly fixed to the inside of the bobbin 110 by a method other than screw coupling without forming a screw thread on the inner circumferential surface of the bobbin 110 . Alternatively, the one or more lenses may be integrally formed with the bobbin 110 without a lens barrel.

The lens coupled to the lens barrel may be configured as one sheet, or two or more lenses may be configured to form an optical system.

The auto-focusing function is controlled according to the direction of the current, and the auto-focusing function may be implemented by moving the bobbin 110 in the first direction. For example, when a forward current is applied, the bobbin 110 may move upward from the initial position, and when a reverse current is applied, the bobbin 110 may move downward from the initial position. Alternatively, the movement distance in one direction from the initial position may be increased or decreased by adjusting the amount of current in one direction.

A plurality of upper support protrusions and lower support protrusions may protrude from the upper and lower surfaces of the bobbin 110 . The upper support protrusion may be provided in a cylindrical shape or a prismatic shape, and may couple and fix the upper elastic member 150 . The lower support protrusion may be provided in a cylindrical or prismatic shape like the upper support protrusion, and may couple and fix the lower elastic member 160 .

In this case, the upper elastic member 150 may have a through hole corresponding to the upper support protrusion, and the lower elastic member 160 may have a through hole corresponding to the lower supporting protrusion. Each of the support protrusions and the through-holes may be fixedly bonded to each other by thermal fusion or an adhesive such as epoxy.

The housing 140 may serve to support the first magnet 130 . 1 and 2 , the housing 140 may have a hollow column shape as an embodiment, and may be formed in a substantially rectangular shape. The first magnet 130 and the support member 220 may be respectively coupled to the side portion of the housing 140 to be disposed.

In addition, as described above, the bobbin 110 that is guided by the elastic members 150 and 160 and moves in the first direction may be disposed inside the housing 140 . In the embodiment, the first magnet 130 may be disposed on a corner portion of the housing 140 , and the support member 220 may be disposed on the side surface.

The upper elastic member 150 may be provided on the upper side of the bobbin 110 , and the lower elastic member 160 may be provided on the lower side of the bobbin 110 . The upper elastic member 150 and the lower elastic member 160 may elastically support the ascending and/or descending operation of the bobbin 110 in the first direction. The upper elastic member 150 and the lower elastic member 160 may be provided as leaf springs.

As shown in FIG. 2 , the upper elastic member 150 may be provided in two pieces separated from each other. Through this two-division structure, each of the divided portions of the upper elastic member 150 may receive currents of different polarities or different power sources. Also, as a modified embodiment, the lower elastic member 160 may have a two-part structure, and the upper elastic member 150 may have an integrated structure.

Meanwhile, the upper elastic member 150 , the lower elastic member 160 , the bobbin 110 , and the housing 140 may be assembled through thermal fusion and/or bonding using an adhesive or the like. In this case, for example, the fixing operation may be finished by bonding using an adhesive after thermal fusion fixing.

The base 210 is disposed under the bobbin 110 and may be provided in a substantially rectangular shape, the printed circuit board 250 may be seated, and the lower side of the support member 220 may be fixed. In addition, a seating groove 214 into which the support member 220 can be inserted may be concavely formed on the upper surface of the base 210 . An adhesive may be applied to the seating groove 214 to fix the support member 220 so that it does not move.

A support groove having a corresponding size may be formed on a surface of the base 210 facing the portion on which the terminal surface 253 is formed of the printed circuit board 250 . The support groove is formed to be concave inward to a predetermined depth from the outer circumferential surface of the base 210 , so that the portion where the terminal surface 253 is formed does not protrude to the outside or the amount of protrusion can be adjusted.

The support member 220 is disposed on the side surface of the housing 140, the upper side is coupled to the housing 140 and the upper elastic member 150, the lower side is coupled to the base 210, the bobbin 110 and The housing 140 may be supported to be movable in a second direction and a third direction perpendicular to the first direction, and may be electrically connected to the first coil 120 .

The upper elastic member 150 may apply a current to the first coil 120 through the electrically connected support member 220 . Meanwhile, although the plate-shaped support member 220 is illustrated in FIG. 2 as an embodiment, the present invention is not limited thereto. That is, the support member may be provided in the form of a wire.

The second coil 230 may perform handshake correction by moving the housing 140 in the second and/or third directions through electromagnetic interaction with the first magnet 130 .

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

In addition, the first magnet 130 needs to be installed at a position corresponding to the second coil 230 .

The second coil 230 may be disposed to face the first magnet 130 fixed to the housing 140 . In an embodiment, the second coil 230 may be disposed outside the first magnet 130 . Alternatively, the second coil 230 may be installed to be spaced apart from the lower side of the first magnet 130 by a predetermined distance.

According to the embodiment, a total of four second coils 230 may be installed at the four corners of the circuit member 231, but the present invention is not limited thereto, and one for the second direction and one for the third direction. It is also possible that only two such lights are installed, or four or more may be installed.

In the case of the embodiment, a circuit pattern is formed in the shape of the second coil 230 on the circuit member 231 , and an additionally separate second coil may be disposed on the circuit member 231 , but is not limited thereto, and the circuit Without forming a circuit pattern in the shape of the second coil 230 on the member 231 , only a separate second coil 230 may be disposed on the circuit member 231 .

Alternatively, the second coil 230 may be formed by winding the wire in a donut shape, or the second coil 230 may be formed in the form of an FP coil and electrically connected to the printed circuit board 250 .

The second coil 230 may be disposed above the base 210 and below the housing 140 . In this case, the circuit member 231 including the second coil 230 may be installed on the upper surface of the printed circuit board 250 disposed above the base 210 .

However, the present invention is not limited thereto, and the second coil 230 may be disposed in close contact with the base 210 , may be disposed spaced apart from the base 210 , and may be formed on a separate substrate to attach the second coil 230 to the printed circuit board 250 . It can also be laminated.

The printed circuit board 250 is coupled to the upper surface of the base 210 , and as shown in FIG. 2 , a through hole or groove may be formed at a position corresponding to the seating groove 214 to be exposed.

A bent terminal surface 253 on which the terminal 251 is installed may be formed on the printed circuit board 250 . In the embodiment, a printed circuit board 250 on which two bent terminal surfaces 253 are formed is shown. A plurality of terminals 251 are disposed on the terminal surface 253 to supply current to the first coil 120 and the second coil by receiving external power. The number of terminals formed on the terminal surface 253 may be increased or decreased according to the types of components that need to be controlled. In addition, the printed circuit board 250 may include one or three or more terminal surfaces 253 .

The cover member 300 may be provided in a substantially box shape, accommodate the above-described movable part, the second coil 230 , a part of the printed circuit board 250 , and the like, and may be coupled to the base 210 . The cover member 300 protects the movable part accommodated therein, the second coil 230, the printed circuit board 250, etc. from being damaged, and in particular, the first magnet 130, the first The electromagnetic field generated by the coil 120 , the second coil 230 , and the like may be restricted from leaking to the outside so that the electromagnetic field may be focused.

3 is a perspective view showing a state in which the support member 220 according to an embodiment is disposed. 4 is a front view showing the support member 220 according to an embodiment.

A portion of the upper side of the support member 220 may be coupled to the upper elastic member 150 . In addition, another portion of the upper side of the support member 220 may be coupled to the housing 140 .

As shown in FIG. 3 , the support member 220 according to the embodiment is disposed on the side surface of the housing 140 , and the lower side is to be coupled to the seating groove 214 formed in the base 210 by an adhesive or the like. The upper side may be adhered to the side surface of the housing 140 and the upper elastic member 150 .

Since the support members 220 are respectively disposed on the outer surface of the quadrangle of the housing 140 , a total of four are disposed to surround the bobbin 110 , respectively, and may be disposed to be symmetrical to each other. However, the present invention is not limited thereto, and it is also possible to configure eight pieces of two for each straight surface of the housing 140 .

In addition, the support member 220 may be electrically connected to the upper elastic member 150 , or may be electrically connected to a straight surface of the upper elastic member 150 . In addition, since the support member 220 is formed as a separate member from the upper elastic member 150 , the support member 220 and the upper elastic member 150 may be electrically connected to each other through a conductive adhesive, solder, or the like.

As shown in FIG. 4 , the support member 220 includes a first coupling part 221 , a first elastically deformable part 222 , a second elastically deformed part 223 , and a second coupling part 224 . It may include a connection part 225 and a first protrusion part 226 .

The first coupling part 221 may be coupled to the upper portion of the housing 140 , and a through hole 800 may be formed therein. In this case, the first coupling part 221 may be attached to a portion where the through hole 800 is formed on the second protruding part 149 protruding from the upper surface of the housing 140 . Meanwhile, the first coupling part 221 may be adhered to the upper elastic member 150 , which will be described in detail below.

As shown in FIG. 4 , at least one through-hole 800 may be formed at both ends of the first coupling part 221 , and an adhesive is applied to the portion where the through-hole 800 is formed. The first coupling part 221 may be attached to the housing 140 . A structure in which the first coupling part 221 and the housing 140 are bonded to each other will be described in detail below.

On the other hand, in another embodiment, the second coupling part 224 may be formed with a concave groove (not shown), and fit or fit and adhere to a coupling protrusion (not shown) protruding from the housing 140 . By this, the second coupling part 224 may be configured in such a way that it is coupled to the housing 140 .

The second coupling portion 224 is a portion coupled to the base 210, and may be provided at the lower end of the support member 220. In addition, the first elastically deformable portion 222 and the second elastically deformable portion ( 223) may be provided in a wider plate shape, but is not limited thereto, and may have a narrow or corresponding width.

According to the embodiment, as shown in FIG. 4 , the second coupling part 224 is connected to each other and formed in a symmetrical pair, each of which can be inserted or disposed in the seating groove 214 of the base 210 . have. The second coupling part 224 may be fixedly coupled to the seating groove 214 formed in the base 210 by an adhesive such as epoxy, or may be coupled without the seating groove 214 .

However, the present invention is not limited thereto, and the seating groove 214 may correspond to the second coupling part 224 to fit and couple them. Alternatively, the second coupling portion 224 may be formed of one, or may be formed of two or more, and the base 210 has a number of seating grooves 214 corresponding to the number of the second coupling portions 224 . ) can be formed.

The first elastically deformable portion 222 may be provided as a pair extending from the first coupling portion 221 and arranged to be symmetrical to each other. The second elastically deformable portion 223 may be provided as a pair extending from the second coupling portion 224 and disposed to be symmetrical to each other.

The elastically deformable parts 222 and 223 may be bent at least once to form a pattern of a predetermined shape. According to an embodiment, the elastically deformable part may include first and second elastically deformable parts 222 and 223 , and the first elastically deformable part 222 is formed to extend from the first coupling part 221 and the It is connected to the connector 225 . The second elastically deformable part 223 is formed to extend from the first coupling part 221 and is connected to the connection part 225 .

In addition, it may be formed with the connection part 225 interposed in the middle, or may be provided in a shape corresponding to each other.

For example, as shown in FIG. 4 , when the first elastically deformable part 222 is provided in a zigzag shape through bending twice or more, the second elastically deformable part 223 is also provided in a plurality of zigzag shapes corresponding thereto. However, the present invention is not limited thereto, and only the first elastically deformable portion 222 or the second elastically deformable portion 223 may be provided in a different shape.

The above is only one embodiment, and it is also possible to configure it to have various shapes in addition to it. At this time, the first and second elastically deformable parts 222 and 223 may be configured as one without distinguishing, or it may be configured only in the form of a suspension wire without such a pattern.

According to an exemplary embodiment, the straight portions of the first and second elastically deformable portions 222 and 223 may be formed to be substantially parallel to a plane perpendicular to the first direction.

The elastically deformable parts 222 and 223 are formed in the direction in which the housing 140 moves or the length of the support member 220 when the housing 140 moves in the second and/or third directions that are planes perpendicular to the first direction. It can be elastically deformed slightly in the direction.

Then, the housing 140 can move in the second and third directions that are substantially perpendicular to the first direction without a change in position in the first direction, thereby increasing the accuracy of handshake correction. This utilizes the characteristic that the elastically deformable parts 222 and 223 can be stretched in the longitudinal direction. Here, the longitudinal direction may be a direction connecting the first and second coupling parts 221 and 224 .

The connecting part 225 may be provided as a pair that connects the first elastically deformable part 222 and the second elastically deformable part 223 to each other and is arranged to be symmetrical with each other. The connection part 225 may be disposed in the middle of the first and second elastic deformation parts 222 and 223 as described above, but is not limited thereto, and may be disposed in connection with one elastic deformation part,

In the case of the embodiment, the first and second elastically deformable portions 222 and 223 are provided in pairs, respectively, but the first and second coupling portions 221 and 224 are integrally formed to form a pair of first and The second elastically deformable parts 222 and 223 may be fixed to the housing 140 and the base 210 at once.

In addition, there may be one or more coupling portions at both ends of the support member 220 , and one or more elastically deformable portions may be included between both ends of the support member 220 .

The first protrusion 226 may protrude downward from the first coupling part 221 . The first protrusion 226 is formed in a T-shape as an embodiment in FIG. 4 , but is not limited thereto, and may be formed in various other shapes, for example, a bar shape, a circle shape, an oval shape, and a curved shape. .

The first protrusion 226 may be adhered to the side surface of the housing 140 , and may serve to fix or couple the upper portion of the support member 220 to the side surface of the housing 140 . At this time, if only the first protrusion 226 is attached to the housing 140 in order to adhere the support member 220 to the housing 140 , sufficient bonding strength between the support member 220 and the housing 140 is secured. Can not.

In this case, the support member 220 may be separated from the housing 140 by repeated external shocks, which may cause malfunction or failure of the lens driving device, thus securing the mechanical reliability of the lens driving device. There is a problem that cannot be done. A specific structure of the lens driving device for solving this problem will be described below.

5 is a front view showing a state in which the support member 220 is disposed according to an embodiment. 6 is a partial perspective view showing a state in which the support member 220 is disposed according to an embodiment.

The first protrusion 226 of the support member 220 is adhered to the side surface of the housing 140, and on the side surface of the housing 140, the first protrusion portion ( 226) and a fourth protrusion 147 for bonding may be formed. The fourth protrusion 147 may protrude in a direction opposite to the first protrusion 226 .

Accordingly, an adhesive is applied to the respective surfaces of the first protrusion 226 and the fourth protrusion 147 facing each other, and the adhesive is cured to cure the first protrusion 226 and the fourth protrusion 147 . By being adhered to each other, the support member 220 may be adhered to the housing 140 .

Meanwhile, a portion of the side surface of the housing 140 where the support member 220 is disposed may be formed as an inclined surface 148 . As shown in FIG. 6 , the inclined surface 148 may have an area capable of accommodating all of the support members 220 .

The inclined surface 148 may be formed by recessing a portion of the side surface of the housing 140 as much as an area capable of accommodating all of the support member 220 . In this case, the recessed portion of the side of the housing 140 may be formed such that the separation distance from the support member 220 becomes longer toward the lower side, thereby forming the inclined surface 148 .

Due to the formation of the inclined surface 148 , the support member 220 may have a longer distance from the side surface of the housing 140 toward the lower side of the housing 140 . Due to this structure, when the support member 220 moves on the x-y plane perpendicular to the first direction, the interference by the housing 140 of the support member 220 can be significantly reduced. The image stabilization function of the driving device may be improved.

FIG. 7 is a view showing an embodiment of part A of FIG. 6 . As described above, the second protrusion 149 may be formed to protrude from the upper surface of the housing 140 in the first direction, and an end of the first coupling part 221 in which the through hole 800 is formed may be adhered. Referring to FIG. 7 , a method of bonding the first coupling part 221 to the second protruding part 149 is as follows.

First, an adhesive is applied to each of the opposite surfaces of the end of the first coupling part 221 and the second protrusion 149 facing each other. Next, the end of the first coupling portion 221 and the second protrusion 149 are adhered to each other. Next, the adhesive is applied again to the opposite surface 221b of the opposite surface of the end of the first coupling part 221 .

After that, when the adhesive is cured, the end of the first coupling portion 221 and the opposite surfaces of each of the second protrusions 149 may be fixed or bonded to each other by adhesion. In addition, the adhesive accumulated on the inner circumferential surface of the through hole 800 and the adhesive applied to a portion of the opposite surface 221b of the opposing surface may be cured to function as a coupler such as a gusset, a fixing pin, or a rivet.

Therefore, due to this adhesive structure, the first coupling part 221 and the second protruding part 149 are firmly attached to each other and can be fixed or coupled to each other. can be combined

Meanwhile, in another embodiment, the adhesive may be applied only to the opposite surface 221b of the opposite surface of the end of the first coupling part 221 . In this case, a part of the adhesive applied to the opposite surface 221b of the opposite surface permeates between the end of the first coupling part 221 and the opposite surface of each of the second protrusions 149 through the through hole 800, so that the Each of the opposing surfaces can be fixed or joined to each other by adhesive.

Accordingly, in the embodiment, a through hole is formed in a portion where the first coupling part 221 of the support member 220 is bonded to the housing 140 , and the support member 220 and the housing 140 are connected to each other by an adhesive. By bonding and bonding, there is an effect of increasing the bonding strength between the support member 220 and the housing 140 .

Meanwhile, the first coupling part 221 may be adhered to the upper elastic member 150 . As shown in FIG. 7 , a bonding part 900 may be formed to bond the first coupling part 221 and the upper elastic member 150 to each other.

The bonding part 900 is applied or formed between a portion of the first coupling part 221 and the upper surface of the upper elastic member 150 to couple the first coupling part 221 and the upper elastic member 150 . can play a role in making

In one embodiment, as shown in Figure 7, the bonding portion 900 is a portion of the opposite surface of the first coupling portion 221 opposite to the second projection 149 of the end portion, the second projection ( 149) may be applied or formed so as to adhere the side surface and the upper surface of the elastic member to each other.

The bonding portion 900, for example, may be applied or formed in a three-dimensional shape, such as a partial shape of a sphere or ellipsoid. The shape of the bonding portion 900 is the viscosity ( viscosity) and can be easily implemented by surface tension.

The support member 220 and the upper elastic member 150 may be formed of a metal material. Meanwhile, the bobbin 110 may be formed of a plastic material.

When each member formed of the same type of material is coupled to each other with an adhesive, the bonding strength between the respective members may be significantly higher than when each member formed of a different type of material is coupled to each other with an adhesive.

In an embodiment, since the support member 220 and the bobbin 110 are formed of a plastic material, they are coupled to each other with an adhesive, and at the same time, the support member 220 and the upper elastic member 150 are formed of a metal material. bonding with adhesive.

Due to this structure, in particular, by bonding the support member 220 and the upper elastic member 150 made of the same material, that is, a metal material, with an adhesive, the bonding strength of the support member 220 in the lens driving device is significantly increased. can

Therefore, in the embodiment, the bonding strength of the support member 220 in the lens driving device is weak, and the support member 220 may be separated from the housing 140 by repeated external shocks, which causes malfunction of the lens driving device. , it is possible to significantly reduce the occurrence of malfunctions, and thus, there is an effect of securing the mechanical reliability of the lens driving device.

8 is a view showing another embodiment of part A of FIG. 6 . In an embodiment, as shown in FIG. 8 , a third protrusion 159 may be formed on the upper elastic member 150 at a portion opposite to the lower end of the first coupling portion 221 .

At this time, the third protrusion 159 and the first coupling portion 221 may be adhered to each other in the following manner. First, an adhesive is applied to each of the opposite surfaces of the end of the first coupling part 221 and the second protrusion 149 facing each other, or the adhesive is applied to the opposite surface of the end of the first coupling part 221 . It is applied only to the surface 221b.

Next, a portion of the adhesive applied to the first coupling part 221 flows and accumulates in the third protruding part 159 . In one embodiment, the adhesive flowing from the first coupling part 221 may be accumulated between the upper surface 159a of the third protrusion 159 and the lower end 221a of the first coupling part 221 opposite thereto. .

The adhesive flowing from the first coupling part 221 is coupled in a standing state between the upper surface 159a of the third protruding part 159 and the lower end 221a of the first coupling part 221 to form the first coupling part ( 221) and the upper elastic member 150 may be coupled.

Therefore, in the embodiment, the first coupling part 221 and the first protrusion 226 are coupled to each other by an adhesive, and the first coupling part 221 and the third protrusion 159 are coupled to each other by an adhesive. can In addition, the first coupling part 221 , the second protruding part 149 and the upper elastic member 150 may be coupled to each other by the bonding part 900 .

In the embodiment, the support member 220 , the housing 140 , and the upper elastic member 150 have a structure in which the triple solid coupling is performed, and the support member 220 is coupled to the side surface of the housing 140 . . Due to this structure, the support member 220 may be firmly coupled to the lens driving device.

On the other hand, the adhesive or bonding unit 900 used in the embodiment may be provided with, for example, epoxy or thermosetting bond. However, the present invention is not limited thereto, and any material or component may be used as long as it satisfies the bonding strength and other characteristics required for the design of the lens driving device.

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

The camera module according to the embodiment may include a lens barrel coupled to the bobbin 110 , an image sensor (not shown), and a printed circuit board 250 . The lens barrel is the same as described above, and the printed circuit board 250 may form the bottom surface of the camera module from the portion where the image sensor is mounted. In addition, the lens barrel may include at least one lens that transmits an image to the image sensor.

In addition, the camera module may further include an infrared cut filter (not shown). The infrared cut filter serves to block light in the infrared region from being incident on the image sensor.

In this case, in the base 210 illustrated in FIG. 2 , an infrared cut filter may be installed at a position corresponding to the image sensor, and may be coupled to a holder member (not shown). In addition, the holder member may support the lower side of the base 210 .

A separate terminal member may be installed on the base 210 to conduct electricity with the printed circuit board 250 , and it is also possible to integrally form the terminal using a surface electrode or the like.

Meanwhile, the base 210 may function as a sensor holder to protect the image sensor, and in this case, a protrusion may be formed in a downward direction along the side surface of the base 210 . However, this is not an essential configuration, and although not shown, a separate sensor holder may be disposed under the base 210 to perform its role.

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

110: bobbin
120: first coil
130: first magnet
140: housing
150: upper elastic member
160: lower elastic member
210: base
220: support member
221: first coupling part
222: first elastic deformation part
223: second elastic deformation part
224: second coupling part
225: connection
800: through hole
900: bonding unit

Claims (21)

housing;
a bobbin disposed within the housing;
a magnet disposed on the housing;
a first coil disposed on the bobbin and configured to move the bobbin in a first direction by interaction with the magnet;
an upper elastic member disposed above the bobbin and coupled to the bobbin and the housing;
a support member coupled to the upper elastic member and supporting the housing; and
and a bonding unit for coupling the housing, the upper elastic member, and the support member,
The housing includes a protrusion protruding from an upper surface in the first direction, and the support member includes a first coupling portion coupled to the protrusion,
The first coupling portion includes an opposing surface facing the side surface of the protrusion,
The side surface of the protrusion is coupled to a partial region of the opposite surface of the first coupling part,
The bonding portion is coupled to a side surface of the protrusion, another partial region of the opposite surface of the first coupling portion, and the upper elastic member. According to claim 1,
and a base disposed under the housing. According to claim 1,
The bonding part is an epoxy or thermosetting bond. 3. The method of claim 2,
The support member is
a second coupling part coupled to the base; and
and a connection part connecting the first coupling part and the second coupling part. According to claim 1,
The first coupling portion includes at least one or more through-holes,
A lens driving device in which the first coupling portion is coupled to the side surface of the protrusion of the housing by an adhesive. delete housing;
a bobbin disposed within the housing;
a magnet disposed on the housing;
a first coil disposed on the bobbin and configured to move the bobbin in a first direction by interaction with the magnet;
an upper elastic member disposed above the bobbin and coupled to the bobbin and the housing;
a support member coupled to the upper elastic member and supporting the housing; and
and a bonding unit for coupling the housing, the upper elastic member, and the support member,
The housing includes a protrusion protruding from an upper surface in the first direction, and the support member includes a first coupling portion coupled to a first side surface of the protrusion of the housing,
The bonding portion is coupled to the second side surface of the protrusion of the housing, the first coupling portion of the support member, and the upper elastic member. According to claim 1,
The bonding part is attached to an upper surface of the upper elastic member, the side surface of the protrusion of the housing, and one surface of the first coupling part facing the protrusion. According to claim 1,
The upper elastic member includes a protrusion formed in a portion opposite to the lower end of the first coupling portion,
The protrusion of the upper elastic member and the lower end of the first coupling portion are coupled by an adhesive. According to claim 1,
a circuit board disposed under the housing; and
a base disposed under the circuit board;
and a second coil electrically connected to the circuit board and configured to move the housing in a direction perpendicular to the first direction by interaction with the magnet. 11. The method of claim 10,
The second coil may include a circuit member disposed on the circuit board and a coil formed in the circuit member. According to claim 1,
The support member is a plate-shaped or wire-shaped lens driving device. image sensor; and
A camera module comprising the lens driving device according to any one of claims 1 to 5, and claims 7 to 12. delete delete delete delete delete delete delete delete

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