KR20170086927A - Lens moving apparatus and camera module including the same - Google Patents

Abstract

One embodiment of the lens driving device includes: a bobbin installed to move in a first direction; A first coil provided on an outer circumferential surface of the bobbin; A housing having the bobbin disposed therein; A first magnet coupled to the housing; An upper elastic member provided on the bobbin and supporting the bobbin; A lower elastic member provided below the bobbin and supporting the bobbin; A support member disposed on a side surface of the housing and supporting the movement of the housing in a second direction and / or a third direction; And a cover member partially disposed on the upper side of the support member, wherein the cover member is formed with an escape groove at a portion opposed to the support member in the first direction.

Description

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

Embodiments relate to a lens driving apparatus and a camera module including the same, which have a structure capable of effectively preventing the occurrence of an electrical short between a cover member and a conductive part.

The contents described in this section merely provide background information on the embodiment and do not constitute the prior art.

In recent years, IT products such as mobile phones, smart phones, tablet PCs, and notebooks, which incorporate ultra-compact digital cameras, are actively under development. In the case of a camera module mounted on a small electronic device such as a smart phone, it may include a lens driving device.

In the case of the lens driving device, it may include at least one lens, and may include an auto focusing device that focuses the lens in the optical axis direction, and an image stabilization device that prevents deterioration of image quality due to user's shaking.

The lens driving device may be provided with a cover member for housing and protecting each component. Meanwhile, the cover member may be generally formed of a conductive material.

When a cover member of a conductive material and an electrical current are applied thereto or a conductive part that transmits or receives an electrical signal comes into contact with each other to generate an electric short, operation of the lens driving device, for example, , The operation of the camera shake correction device or the like may be adversely affected.

Therefore, there is a need for a lens driving device and a camera module having a structure that can effectively prevent the occurrence of an electrical short between the cover member and the conductive part.

Therefore, the embodiment relates to a lens driving apparatus and a camera module including the same, which have a structure capable of effectively preventing the occurrence of an electric short between the cover member and the conductive part.

It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory and are intended to provide further explanation of the invention as claimed.

One embodiment of the lens driving device includes: a bobbin installed to move in a first direction; A first coil provided on an outer circumferential surface of the bobbin; A housing having the bobbin disposed therein; A first magnet coupled to the housing; An upper elastic member provided on the bobbin and supporting the bobbin; A lower elastic member provided below the bobbin and supporting the bobbin; A support member disposed on a side surface of the housing and supporting the movement of the housing in a second direction and / or a third direction; And a cover member partially disposed on the upper side of the support member, wherein the cover member is formed with an escape groove at a portion opposed to the support member in the first direction.

One embodiment of the lens driving device includes: a second coil arranged to face the first magnet; A base disposed below the bobbin; And a printed circuit board mounted on the base.

One embodiment of the lens driving device may further include a soldering portion for coupling the upper portion of the support member and the upper elastic member, and the upper end of the soldering portion may be spaced apart from the cover member by the escape groove in the first direction have.

One embodiment of the lens driving device may further include an insulating part filled in the escape groove and formed of an electrically insulating material.

The escape groove may be formed such that a part of the cover member is recessed in the first direction.

The escape groove may be formed by rolling a part of the cover member.

The escape groove may be formed such that one surface of the cover member is recessed and the other surface of the cover member protrudes.

The support member may be provided in a wire form, and may be disposed in a plurality of corners of the housing.

The escape grooves may be provided on the cover member at a plurality of positions corresponding to the support members in the first direction.

The upper elastic member may include a protrusion formed on an upper surface of the housing at a position adjacent to the soldering joint, wherein the upper elastic member is coupled to an upper surface of the housing and is soldered to an upper portion of the support member .

The soldering joints may be disposed in a pair, spaced apart from each other, and the protrusions may be disposed between the pair of soldering joints.

The protrusion may be to prevent plastic deformation of the soldering joint.

Another embodiment of the lens driving device includes: a bobbin installed to move in a first direction; A first coil installed on an outer circumferential surface of the bobbin; A housing having the bobbin installed therein; A first magnet coupled to the housing; An upper elastic member provided on the bobbin and supporting the bobbin; A lower elastic member provided below the bobbin and supporting the bobbin; A support member disposed on a side surface of the housing and supporting the movement of the housing in a second direction and / or a third direction; And a cover member having an upper surface disposed on the upper side of the support member and an escape groove formed in a portion opposed to the support member in the first direction, wherein the upper elastic member is coupled to the upper surface of the housing, And a soldering connection portion to be soldered to an upper portion of the member, wherein the housing has a projection protruding from the upper surface at a position adjacent to the soldering connection portion.

One embodiment of the camera module may include the lens driving device.

In the embodiment, the escape grooves formed in the cover member prevent electrical shorts between the support member and the cover member, thereby preventing malfunction of the lens driving device due to the shot and deterioration of the image quality of the photographed image.

In the embodiment, by forming the protrusion in the housing, it is possible to effectively prevent the plastic deformation of the soldering joint portion that may occur when the upper elastic member is coupled to the housing.

1 is a perspective view showing a lens driving apparatus according to an embodiment.
2 is an exploded perspective view showing a lens driving apparatus according to an embodiment.
3 is a cross-sectional view showing an embodiment of the portion A in Fig.
4 is a partly plan view of the lens driving apparatus according to the embodiment with the cover member removed.
5 is a bottom view of a cover member according to an embodiment.
6 is a cross-sectional view showing another embodiment of the portion A in Fig.
7 is a cross-sectional view showing another embodiment of the portion A in Fig.
8 is an enlarged view showing part B of Fig.
Fig. 9 is a perspective view of Fig. 8. Fig.

Hereinafter, embodiments will be described in detail with reference to the accompanying drawings. The embodiments are to be considered in all aspects as illustrative and not restrictive, and the invention is not limited thereto. It is to be understood, however, that the embodiments are not intended to be limited to the particular forms disclosed, but are to include all modifications, equivalents, and alternatives falling within the spirit and scope of the embodiments. The sizes and shapes of the components shown in the drawings may be exaggerated for clarity and convenience.

The terms "first "," second ", and the like can be used to describe various components, but the components should not be limited by the terms. The terms are used only for the purpose of distinguishing one component from another. In addition, terms specifically defined in consideration of the constitution and operation of the embodiment are only intended to illustrate the embodiments and do not limit the scope of the embodiments.

In the description of the embodiments, when it is described as being formed on the "upper" or "on or under" of each element, the upper or lower (on or under Quot; includes both that the two elements are in direct contact with each other or that one or more other elements are indirectly formed between the two elements. Also, when expressed as "on" or "on or under", it may include not only an upward direction but also a downward direction with respect to one element.

It is also to be understood that the terms "top / top / top" and "bottom / bottom / bottom", as used below, do not necessarily imply nor imply any physical or logical relationship or order between such entities or elements, But may be used only to distinguish one entity or element from another entity or element.

Further, in the drawings, an orthogonal coordinate system (x, y, z) can be used. In the drawing, the x axis and y axis mean a plane perpendicular to the optical axis. For convenience, the optical axis direction (z axis direction) can be referred to as a first direction, the x axis direction as a second direction, and the y axis direction as a third direction .

1 is a perspective view showing a lens driving apparatus according to an embodiment. 2 is an exploded perspective view showing a lens driving apparatus according to an embodiment.

An image stabilizer applied to a small-sized camera module of a mobile device such as a smart phone or a tablet PC is a device for preventing the outline of the photographed image from being formed due to the vibration caused by the shaking of the user at the time of shooting the still image Means a configured device.

The auto focusing apparatus is a device that automatically focuses an image of an object on an image sensor (not shown). In this embodiment, the optical module including a plurality of lenses may be moved in a first direction, or may be moved in a direction perpendicular to the first direction. In this case, Operation and / or auto focusing operation.

As shown in FIG. 2, the lens driving apparatus 100 according to the embodiment may include a movable portion and a fixed portion. At this time, the movable part can perform the auto focusing function of the lens. The movable part may include a bobbin 110 and a first coil 120. The fixed part may include a first magnet 130, a housing 140, an upper elastic member 150, and a lower elastic member 160 have.

The bobbin 110 is provided inside the housing 140 and has a first coil 120 disposed on the inner circumference of the first magnet 130. The first magnet 130 and the first coil 130, (120) so as to reciprocate in a first direction in an inner space of the housing (140). The first coil 120 may be installed on the outer circumferential surface of the bobbin 110 to enable electromagnetic interaction with the first magnet 130.

Further, the bobbin 110 is elastically supported by the upper and lower elastic members 150 and 160, and can perform the auto focusing function by moving in the first direction.

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, female threads may be formed on the inner circumferential surface of the bobbin 110, male thread corresponding to the threads may be formed on the outer circumferential surface of the lens barrel, and the lens barrel may be coupled to the bobbin 110 by screwing. 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 screwing, without forming a thread on the inner circumferential surface of the bobbin 110. Alternatively, the one or more lenses may be formed integrally with the bobbin 110 without a lens barrel.

The lens coupled to the lens barrel may be composed of a single lens, or two or more lenses may be configured to form an optical system.

The auto focusing function is controlled according to the direction and / or the current amount of the current, and the auto focusing function may be implemented by moving the bobbin 110 in the first direction. For example, when the forward current is applied, the bobbin 110 can move upward from the initial position, and when the reverse current is applied, the bobbin 110 can move downward from the initial position. Alternatively, the amount of unidirectional current may be adjusted to increase or decrease the movement distance from the initial position in one direction.

The upper and lower surfaces of the bobbin 110 may have a plurality of upper support protrusions and lower support protrusions. The upper support protrusions may be cylindrical or prismatic and may be coupled and fixed to the upper elastic member 150 by guiding the upper elastic member 150. The lower support protrusions may be cylindrical or prismatic like the upper support protrusions, and may be coupled to and fixed to the lower elastic member 160 by guiding the lower elastic member 160.

At this time, a through hole and / or a groove corresponding to the upper supporting protrusion may be formed on the upper elastic member 150, and a through hole and / or groove corresponding to the lower supporting protrusion may be formed on the lower elastic member 160. Each of the support protrusions and the through holes and / or the grooves may be fixedly joined by an adhesive member such as heat seal or epoxy.

The housing 140 has a hollow column shape for supporting the first magnet 130, and may be formed in a substantially rectangular shape. The first magnet 130 may be coupled to the side surface of the housing 140. As described above, the bobbin 110, which is guided by the elastic members 150 and 160 and moves in the first direction, may be disposed inside the housing 140.

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 are coupled to the housing 140 and the bobbin 110 and the upper elastic member 150 and the lower elastic member 160 are coupled to the first And / or downward motion in the direction of the arrow. The upper elastic member 150 and the lower elastic member 160 may be formed of leaf springs.

As shown in FIG. 2, the upper elastic members 150 may be provided separately from each other. With this multi-split structure, each of the divided portions of the upper elastic member 150 can be supplied with electric currents of different polarities or different electric powers, or can be current-carrying passages. Also, the lower elastic member 160 may have a multi-split structure and may be electrically connected to the upper elastic member 150.

Meanwhile, the upper elastic member 150, the lower elastic member 160, the bobbin 110, and the housing 140 may be assembled through heat bonding and / or bonding using an adhesive or the like.

The base 210 is disposed at a lower portion of the bobbin 110, may be formed in a substantially rectangular shape, and the printed circuit board 250 may be disposed or seated.

A supporting groove having a corresponding size may be formed on the surface of the base 210 opposite to the portion on which the terminal surface 253 of the printed circuit board 250 is formed. The support groove is recessed to a certain depth from the outer circumferential surface of the base 210 so that the portion where the terminal surface 253 is formed is prevented from protruding outward or can be adjusted.

The support member 220 is disposed on the side of the housing 140 so as to be spaced apart from the housing 140 and has an upper side coupled to the upper elastic member 150 and a lower side connected to the base 210, The bobbin 110 and the housing 140 may be coupled to the member 231 so that the bobbin 110 and the housing 140 are movable in a second direction and / or a third direction perpendicular to the first direction, (Not shown).

A pair of support members 220 according to the embodiment is disposed on the outer surface of the corner of the housing 140, so that a total of eight support members 220 can be installed. In another embodiment, the supporting member 220 may be provided on the outer surface of the corner of the housing 140, four in total.

Alternatively, in the case of another embodiment, two pieces may be arranged at two corners and one piece at the other two corners so that a total of six pieces may be arranged. Or, as the case may be, a total of seven or more than nine may be arranged.

Further, the support member 220 may be electrically connected to the upper elastic member 150. That is, for example, the support member 220 may be electrically connected to a portion where the through hole of the upper elastic member 150 is formed.

The support member 220 and the upper elastic member 150 are electrically connected to each other through a conductive adhesive agent, soldering, . Accordingly, the upper elastic member 150 can apply an electric current to the first coil 120 through the electrically connected support member 220.

The support member 220 may be connected to the printed circuit board 250 through a through hole formed in the circuit member 231 and / or the printed circuit board 250. Or the support member 220 may be electrically soldered to a corresponding portion of the circuit member 231 without forming a through hole in the circuit member 231 and / or the printed circuit board 250. [

In FIG. 2, the linear supporting member 220 is shown as an embodiment, but the present invention is not limited thereto. That is, the support member 220 may be provided in the form of a plate-like member or the like.

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

Here, the second and third directions may include directions substantially in the x-axis (or the first direction), the y-axis (or the second direction) as well as the x- and y-axis directions. In other words, as seen from the driving aspect of the embodiment, the housing 140 may move parallel to the x- and y-axes, but may also be slightly inclined to the x- and y-axes when it is supported by the support member 220 have.

Therefore, 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 at a predetermined distance below the first magnet 130.

According to the embodiment, a total of four second coils 230 may be provided on four side portions of the circuit member 231, but the present invention is not limited thereto. For example, one second coil 230, Only two can be installed, and four or more can be installed.

Or one in the first direction for the second direction, two in the second direction for the second direction, one in the third direction for the third direction, and two in the fourth direction for the third direction, . Alternatively, in this case, the first side and the fourth side may be adjacent to each other, and the second side and the third side may be adjacent to each other.

A circuit pattern may be formed on the circuit member 231 in the form of a second coil 230 or a separate second coil may be disposed on the circuit member 231. However, A circuit pattern may be formed directly on the member 231 in the form of a second coil 230.

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

The circuit member 231 including the second coil 230 may be installed or disposed on the upper surface of the printed circuit board 250 disposed on the upper side of the base 210. [ However, the present invention is not limited thereto. The second coil 230 may be disposed closely to the base 210, may be spaced apart from the base 210, may be separately formed on the substrate, It may also be laminated.

The printed circuit board 250 is electrically connected to at least one of the upper elastic member 150 and the lower elastic member 160 and is coupled to the upper surface of the base 210. As shown in FIG 2, A through hole into which the support member 220 is inserted may be formed at a position corresponding to an end of the support member 220. Or may be electrically connected and / or bonded to the support member without forming a through hole.

A terminal 251 may be disposed or formed on the printed circuit board 250 and the terminal 251 may be disposed on the bent terminal surface 253. A plurality of terminals 251 are disposed on the terminal surface 253 to supply a current to the first coil 120 and / or the second coil 230 by receiving external power. The number of terminals formed on the terminal surface 253 may be increased or decreased depending on the type of components that need to be controlled. In addition, the printed circuit board 250 may have one or more terminal surfaces 253.

The cover member 300 may be provided in a substantially box shape and may receive a part or all of the movable part, the second coil 230 and the printed circuit board 250 and may be coupled with the base 210. Further, a part of the cover member 300 may be disposed on the upper side of the support member 220. [

The cover member 300 can protect the movable part, the second coil 230, the printed circuit board 250 and the like accommodated in the cover member 300 from being damaged and further includes a first magnet 130 The electromagnetic field generated by the first 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 cross-sectional view showing an embodiment of the portion A in Fig. As shown in FIG. 3, the cover member 300 may have an escape groove 3100 formed therein. The escape groove 3100 may be formed in a portion of the cover member 300, that is, in a portion where the cover member 300 faces the support member 220 in the first direction.

The escape groove 3100 can prevent electrical short due to contact between the support member 220 and the cover member 300.

The upper portion of the support member 220 may be electrically connected to the upper elastic member 150. In order to secure such an electrical connection, the lens driving apparatus of the embodiment may further include a soldering portion 4000 that joins the upper elastic member 150 to the upper portion of the support member 220.

The upper end of the soldering portion 4000 which is spaced apart from the lower surface of the cover member 300 in the first direction is in direct contact with the cover member 300 so that the support member 220 and the cover member 300 are electrically So that an electrical short may occur. The shot can cause the following problems.

The shot may cause malfunction of the auto focusing of the lens driving device and / or the camera shake correction function. For example, an undesired oscillation may occur in the bobbin 110 receiving the current through the support member 220 due to the short circuit.

Further, mechanical hysteresis may be increased in the support member 220, the bobbin 110, the upper elastic member 150, and the lower elastic member, for example, due to the shot and the oscillation of the bobbin 110 .

The increase of the above-described oscillation and hysteresis may eventually degrade the autofocusing and / or the shaking compensation function of the lens driving device. Therefore, the focus adjustment and the shaking motion adjusting function of the camera module including the lens driving device are remarkably deteriorated, so that the image quality of the photographed image may be remarkably deteriorated.

In the embodiment, the escape groove 3100 is formed to prevent an electrical short between the cover member 300 and the support member 220, thereby solving the above-described problem.

In the embodiment, it is appropriate that the depth of the escape groove 3100 is determined in consideration of the overall size, structure, and the like of the lens driving apparatus. The upper end of the soldering portion 4000 may be positioned above the upper elastic member 150. For example, the distance H in the first direction between the upper surface of the upper elastic member 150 and the lower surface of the cover member 300 may be about 0.5 mm, but is not limited thereto, have.

However, since the spacing distance H is reduced as the manufacture of the ultra-small camera module and the lens driving device increases, the possibility that the upper end of the soldering portion 4000 and the lower surface of the cover member 300 are in contact with each other may increase .

Therefore, it is necessary to design the separation distance H as large as possible, and to set the depth of the escape groove 3100 so that the upper end of the soldering portion 4000 does not contact the lower surface of the cover member 300 . The depth of the escape groove 3100 is preferably determined in consideration of the thickness of the portion of the cover member 300 opposed to the support member 220.

The escape groove 3100 may be formed in various ways. In one embodiment, the escape groove 3100 may be formed by etching the cover member 300. Alternatively, the escape groove 3100 may be formed when the cover member 300 is manufactured through injection molding or the like. In another embodiment, the escape groove 3100 may be formed by rolling a part of the cover member 300.

For example, the cover member 300 may be made of SUS (stainless steel) or white (white) material without magnetism. The cover member 300 may be formed to have a thickness of about 0.2 mm to 0.3 mm in order to protect internal parts and the like against external stiffness and the like. At this time, the depth of the escape groove 3100 is preferably about 0.05 mm or more. However, this is only an example, and the thickness of the cover member 300 and the thickness of the escape groove 3100 may be different from those described above.

The escape grooves 3100 formed in the cover member 300 prevent electric short between the support member 220 and the cover member 300 so that the operation failure of the lens drive device due to the shot, It is possible to prevent deterioration of the image quality of the image.

4 is a partial plan view of the lens driving apparatus according to the embodiment, in which the cover member 300 is removed. 5 is a bottom view showing the cover member 300 according to one embodiment.

As shown in FIG. 4, the support members 220 are provided in the form of a wire, and a plurality of support members 220 may be disposed at corner portions of the housing 140. That is, in the lens driving apparatus of the embodiment, a pair of wire-shaped supporting members 220 are disposed at the corner portions of the housing 140, respectively, and a total of eight supporting members 220 can be disposed.

The supporting member 220 may be coupled to the upper elastic member 150 by a soldering portion 4000 for electrical connection. Therefore, the escape groove 3100 may be formed at a portion where the support member 220 and the soldering portion 4000 are disposed and at a portion of the cover member 300 that is opposed to the first direction.

That is, the escape grooves 3100 may be provided on the cover member 300 in a plurality of positions corresponding to the support members 220 in the first direction.

Therefore, as shown in FIG. 5, the escape grooves 3100 can be formed at the corner portions of the support member 220, and a total of four escape grooves 3100 can be formed. 5, the escape grooves 3100 are formed in a curved shape, but the present invention is not limited thereto. For example, a circular, semicircular, polygonal, or polygonal shape can be used as long as it can prevent the cover member 300 and the support member 220 from being short- And may be provided in various other shapes.

6 is a cross-sectional view showing another embodiment of the portion A in Fig. As shown in FIG. 6, the lens driving apparatus of the embodiment may further include an insulating portion 500. The insulating part 500 may be filled in the escape groove 3100 and may be formed of an electrically insulating material.

The insulating part 500 is filled in the escape groove 3100 so that the upper surface of the soldering part 4000 contacts the lower surface of the insulating part 500. Even when the upper surface of the soldering part 4000 contacts the lower surface of the insulating part 500, So that a short circuit between the support member 220 and the cover member 300 can be prevented.

At this time, the insulating portion 500 may be formed of a material such as a polymer material such as polyethylene, polyvinyl chloride, or an electric insulating epoxy adhesive.

Alternatively, although not shown, only the insulating portion 500 may be formed on the lower surface of the cover member 300 without forming the escape groove at a portion where the upper surface of the soldering portion 4000 contacts The supporting member 220 and the cover member 300 are electrically insulated from each other even when the upper surface of the soldering portion 4000 is in contact with the lower surface of the insulating portion 500, 300 can be prevented from occurring.

7 is a cross-sectional view showing another embodiment of the portion A in Fig. 7, the escape groove 3100 may be formed such that one surface, that is, a lower surface of the cover member 300 is recessed, and the other surface, that is, the upper surface of the cover member 300 protrudes.

Due to such a structure, the depth of the escape groove 3100 can be further increased, so that electrical short-circuit between the cover member 300 and the support member 220 can be more effectively prevented. The escape grooves 3100 may be formed by, for example, injection molding, rolling, or the like.

Also, as shown in FIG. 7, the escape groove 3100 may be filled with the insulating part 500 to more effectively prevent the short circuit.

8 is an enlarged view showing part B of Fig. Fig. 9 is a perspective view of Fig. 8. Fig. 8 and 9, the soldering portion 4000 is omitted for clarity. As shown in Figs. 8 and 9, the lens driving apparatus of the embodiment may include a protrusion 1410. Fig.

The upper elastic member 150 may be provided on the upper surface of the housing 140 and may include a soldering joint portion 1510 to be soldered to the upper portion of the support member 220. In addition, the housing 140 may have a protrusion 1410 protruding from a top surface of the housing 140 at a position adjacent to the soldering joint 1510.

8 and 9, in an embodiment, the soldering joints 1510 are provided in a pair spaced apart from each other, and the protrusions 1410 are connected to the pair of soldering joints 1510).

The protrusion 1410 may prevent plastic deformation of the soldering joint 1510. The soldering joint 1510 may cause plastic deformation when an external force is applied in the process of coupling the upper elastic member 150 to the upper surface of the housing 140 and electrically connecting the upper elastic member 150 to the support member 220.

The soldering joint 1510 is disposed at a corner of the upper elastic member 150 and is susceptible to plastic deformation. The soldering joint 1510 may include a soldering process.

For this reason, the soldering joint 1510 may cause plastic deformation during assembly of the upper elastic member 150. When plastic deformation occurs in the soldering joint 1510, the upper elastic member 150 has a deformed shape different from that of the design. Such a deformed upper elastic member 150 has a bad influence on the malfunction of the lens driving device, Lt; / RTI >

The protrusion 1410 may be formed on the housing 140 to prevent plastic deformation of the soldering joint 1510 during the assembly of the upper elastic member 150. [

As shown in Fig. 9, the protrusion 1410 protrudes in the first direction. Therefore, when the worker joins the upper elastic member 150 to the housing 140 and joins the soldering joint portion 1510 and the support member 220 by soldering, the worker moves the upper elastic member 150 to the protrusion 1410 The operation of touching the soldering joint 1510 by hand may be restricted.

There is a high possibility that the soldering joint 1510 is plastically deformed due to an operator touching the soldering joint 1510. The protrusion 1410 may cause the soldering joint 1510 to contact the operator The plastic deformation of the soldering joint portion 1510 can be prevented.

The protrusion 1410 is formed in the housing 140 to effectively prevent the plastic deformation of the soldering joint 1510 that may occur when the upper elastic member 150 is coupled to the housing 140 .

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

The camera module according to the embodiment may include a lens barrel coupled to the bobbin 110, and an image sensor (not shown). At this time, 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 the infrared light from entering the image sensor.

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

A separate terminal member may be provided on the base 210 for energizing the printed circuit board 250, or a terminal may be integrally formed using a surface electrode or the like. Further, if the lens driving apparatus includes a separate substrate, there may be no separate terminal member.

Meanwhile, the base 210 may function as a sensor holder for protecting the image sensor. In this case, a portion protruding downward along the side surface of the base 210 may be formed. However, this is not essential, and although not shown, a separate sensor holder may be disposed below the base 210 to perform its role.

While only a few have been described above with respect to the embodiments, various other forms of implementation are possible. The technical contents of the embodiments described above may be combined in various forms other than the mutually incompatible technologies, and may be implemented in a new embodiment through the same.

110: Bobbin
140: housing
150: upper elastic member
220: Support member
300: cover member
1410:
1510: soldering joint part
3100: Escape home
4000: soldering part
5000: Insulation part

Claims (14)

A bobbin installed to move in a first direction;
A first coil provided on an outer circumferential surface of the bobbin;
A housing having the bobbin disposed therein;
A first magnet coupled to the housing;
An upper elastic member provided on the bobbin and supporting the bobbin;
A lower elastic member provided below the bobbin and supporting the bobbin;
A support member disposed on a side surface of the housing and supporting the movement of the housing in a second direction and / or a third direction; And
A part of the cover member
Lt; / RTI >
Wherein the cover member has an escape groove formed in a portion thereof opposite to the support member in the first direction. The method according to claim 1,
A second coil disposed to face the first magnet;
A base disposed below the bobbin; And
And a printed circuit board mounted on the base. The method according to claim 1,
Further comprising a soldering portion for joining an upper portion of the support member to the upper elastic member,
And the upper end of the soldering portion is spaced apart from the cover member in the first direction by the escape groove. The method according to claim 1,
And an insulating portion filled in the escape groove and formed of an electrically insulating material. The method according to claim 1,
The escape groove may be formed,
And a part of the cover member is recessed in the first direction. The method according to claim 1,
The escape groove may be formed,
And a part of the cover member is rolled. The method according to claim 6,
The escape groove may be formed,
Wherein one surface of the cover member is recessed and the other surface of the cover member is protruded. The method according to claim 1,
Wherein the support member comprises:
And a plurality of lenses are arranged in a corner portion of the housing. 9. The method of claim 8,
The escape groove may be formed,
And a plurality of the cover members are provided at positions corresponding to the support members in the first direction on the cover member. The method according to claim 1,
The upper elastic member is coupled to an upper surface of the housing and is provided with a soldering joint portion to be soldered to an upper portion of the support member,
Wherein the housing has a protrusion formed on an upper surface thereof so as to protrude from a position adjacent to the soldering engagement portion. 11. The method of claim 10,
Wherein the soldering engagement portions are provided in a pair so as to be spaced apart from each other, and the projecting portion is disposed between the pair of soldering engagement portions. 11. The method of claim 10,
The projection
And the plastic deformation of the soldering joint portion is prevented. A bobbin installed to move in a first direction;
A first coil installed on an outer circumferential surface of the bobbin;
A housing having the bobbin installed therein;
A first magnet coupled to the housing;
An upper elastic member provided on the bobbin and supporting the bobbin;
A lower elastic member provided below the bobbin and supporting the bobbin;
A support member disposed on a side surface of the housing and supporting the movement of the housing in a second direction and / or a third direction; And
And a cover member having an upper surface disposed on the upper side of the support member and an escape groove formed in a portion opposed to the support member in the first direction,
The upper elastic member is coupled to an upper surface of the housing and is provided with a soldering joint portion to be soldered to an upper portion of the support member,
Wherein the housing has a protrusion formed on an upper surface thereof so as to protrude from a position adjacent to the soldering engagement portion. A camera module comprising the lens driving device according to any one of claims 1 to 13.

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