KR20180037691A - A lens moving unit, and camera module and optical instrument including the same - Google Patents

Abstract

According to an embodiment of the present invention, a lens driving device comprises: a housing; a bobbin disposed inside the housing, and having a lens to be mounted therein; a first coil disposed on the outer circumferential surface of the bobbin; a magnet disposed on a side of the housing by corresponding to the first coil; a base disposed below the housing; a second coil disposed on the outer surface of the base, and generating induction voltage by interaction with the first coil; and first to fourth elastic members coupled to the bobbin and the housing, and disposed to be spaced apart from each other on the upper surface of the base. Each of the first and second elastic members includes a first bonding unit for bonding the first coil and a first connection terminal for electrical connection with the outside. Each of the third and fourth elastic members includes a second bonding unit for bonding the second coil, and a second connection terminal for electrical connection with the outside. The second bonding unit and the second connection terminal are disposed on different outer surfaces of the base. According to the present invention, a disconnection of the second coil for generating induction voltage is prevented.

Description

TECHNICAL FIELD [0001] The present invention relates to a lens driving device, a camera module including the lens driving device,

Embodiments relate to a lens driving apparatus, a camera module including the lens driving apparatus, and an optical apparatus.

It is difficult to apply the technology of a voice coil motor (VCM) used in a conventional camera module to a camera module for ultra small size and low power consumption, and related research has been actively conducted.

Demand and production of electronic products such as smart phones and mobile phones equipped with cameras are increasing. The camera for mobile phones is becoming more compact and smaller, and accordingly, the actuator is also becoming smaller, larger diameter, and multi-functional. In order to realize a high-resolution cellular phone camera, additional functions such as performance improvement of the cellular phone camera, autofocusing, shutter shake improvement, and zoom function are required.

The embodiment provides a lens driving apparatus, a camera module, and an optical apparatus that can prevent disconnection of a second coil for induction voltage generation and ensure a resistance value of a second coil for temperature compensation.

A lens driving apparatus according to an embodiment includes a housing; A bobbin disposed inside the housing for mounting the lens; A first coil disposed on an outer circumferential surface of the bobbin; A magnet disposed on the side of the housing in correspondence with the first coil; A base disposed below said housing; A second coil disposed on an outer surface of the base and generating an induced voltage by interaction with the first coil; And first to fourth elastic members coupled to the bobbin and the housing, the first to fourth elastic members being spaced apart from each other on an upper surface of the base, wherein each of the first and second elastic members is configured such that the first coil is bonded And a first connection terminal for electrical connection to the outside, wherein each of the third and fourth elastic members has a second bonding part for bonding the second coil, and a second bonding part for electrically connecting the outside to the outside And the second bonding portion and the second connection terminal are disposed on different outer sides of the base.

The base may include a corner portion disposed between the side portions and two adjacent side portions of the side portions, and each of the second bonding portion and the second connection terminal may include a pair of side portions adjacent to the corner portion May be disposed in any one of the outer surfaces.

Wherein each of the first to fourth elastic members is an inner frame coupled with the bobbin; An outer frame coupled to the housing; And a connection part connecting the inner frame and the outer frame, wherein the first bonding part is provided on the inner frame, and the second bonding part and the first and second connection terminals are provided on the outer frame have.

Each of the second bonding portion and the first and second connection terminals may be bent in a direction toward the base from the outer frame, and may be disposed on an outer surface of the base.

The outer surface of the base may be provided with a groove in which the second coil is disposed, and the second bonding portion may be disposed on a region of the outer surface of the base located above the groove.

The first and second connection terminals may extend to other areas of the outer surface of the base located below the groove.

The outer surface of the base may be provided with first depressions in which the first and second connection terminals are disposed, and a second depression may be formed in the outer surface of the base, in which the second bonding portion is disposed.

Each of the first depressions and the second depressions may include an upper opening opened to an upper surface of the base and a lower opening opened to a lower surface of the base.

Wherein the first connection terminals of the first and second elastic members are disposed on a first outer side surface of the base and the second connection terminals of the third and fourth elastic members are disposed on a second outer side surface of the base, The first outer side surface and the second outer side surface of the base may be located opposite to each other.

The second bonding portion of the third elastic member is disposed on a third outer side of the base and the second bonding portion of the fourth elastic member is disposed on a fourth outer side of the base, The fourth outer surface may be located opposite to each other.

Wherein the width of the second region of the outer frame is larger than the width of the second region of the outer frame and the width of the third region of the outer frame and the second region is a region to which the second connection terminal is connected, 3 region is a region to which the second bonding section is connected, and the first region may be a region that connects the second region and the third region. The second coil may be in the form of a ring including a linear portion and a curved portion.

The straight portion of the second coil may be located between first connection terminals disposed on a first outer side of the base and second connection terminals disposed on a second outer side of the base.

The first connection terminals and the second connection terminals are overlapped with the curved portion of the second coil in the first horizontal direction and the first horizontal direction is perpendicular to the first outer side or the second outer side of the base Direction.

Wherein the first connection terminals and the second connection terminals are overlapped with a linear portion of the second coil in a second horizontal direction, the second horizontal direction is perpendicular to the optical axis, and the first outer side surface or the second And may be parallel to the outer surface.

The second bonding portions of the third and fourth elastic members are overlapped with the curved portion of the second coil in the first horizontal direction and the first horizontal direction is perpendicular to the first outer side surface or the second outer side surface of the base It can be in one direction.

The second bonding portions of the third and fourth elastic members overlap the straight portion of the second coil in the second horizontal direction, the second horizontal direction is perpendicular to the optical axis, 2 < / RTI >

A drive signal, which is an AC signal, is applied to the first coil, and the induced voltage responsive to the drive signal may be generated in the second coil.

A camera module according to an embodiment includes: a lens; A lens driving device according to the above-described embodiment for moving the lens; And an image sensor for converting the image inputted through the lens driving device into an electrical signal.

An optical apparatus according to an embodiment includes a display module including a plurality of pixels whose colors change according to an electrical signal; The camera module converting an image incident through a lens into an electrical signal; And a controller for controlling the display module and the camera module.

The embodiment can prevent disconnection of the second coil, secure the resistance value of the second coil for temperature compensation, and can easily manufacture the mold for forming the base and ease of injection.

1 is a perspective view of a lens driving apparatus according to an embodiment.
2 is an exploded perspective view of the lens driving apparatus shown in Fig.
Fig. 3 is a perspective view showing the lens driving apparatus except for the cover member of Fig. 1; Fig.
4A is a first perspective view of the bobbin shown in FIG.
FIG. 4B is a perspective view of the bobbin and the first coil shown in FIG. 1; FIG.
5 shows a perspective view of the housing shown in Fig.
6 shows a combined perspective view of the housing and the magnet.
7 shows the coupling degree of the bobbin, the first coil, the upper elastic member, the lower elastic member, the base, and the second coil.
8 is an exploded perspective view of the base and the lower elastic member to which the second coil is coupled.
Fig. 9 is a perspective view showing an assembled state of the second coil, the base, and the lower elastic member shown in Fig. 8. Fig.
10 shows the arrangement of the second bonding portion and the connection terminal disposed on the base.
11 is a bottom perspective view of the lens driving apparatus of Fig. 2, in which the base and the magnet are omitted.
12 is a plan view showing a relative arrangement relationship between the connection electrodes and the second coil;
13 is a sectional view taken along the CD in the lens driving apparatus of Fig.
Fig. 14 shows a sectional view in the AB direction of the lens driving apparatus shown in Fig. 2. Fig.
Fig. 15 shows a sectional view in the EF direction of the lens driving apparatus shown in Fig.
16A shows a first side view of the lens driving apparatus shown in Fig.
16B shows a second side view of the lens driving apparatus shown in Fig.
17 shows mutual inductance according to the distance between the first coil and the second coil.
18 is a sectional view of a lens driving apparatus according to another embodiment.
Fig. 19 shows a cross-sectional view of a lens driving apparatus according to another embodiment.
20 is an exploded perspective view of the camera module according to the embodiment.
21 is a perspective view of a portable terminal according to an embodiment.
FIG. 22 shows a configuration diagram of the portable terminal shown in FIG. 21. FIG.

BRIEF DESCRIPTION OF THE DRAWINGS The above and other features and advantages of the present invention will become more apparent from the following detailed description taken in conjunction with the accompanying drawings, in which: FIG. In the description of the embodiments, it is to be understood that each layer (film), region, pattern or structure may be referred to as being "on" or "under" a substrate, each layer It is to be understood that the terms " on "and " under" include both " directly "or" indirectly " do. In addition, the criteria for the top / bottom or bottom / bottom of each layer are described with reference to the drawings. The same reference numerals denote the same elements throughout the description of the drawings.

Hereinafter, a lens driving apparatus according to an embodiment will be described with reference to the accompanying drawings. For convenience of explanation, the lens driving apparatus according to the embodiment is described using the Cartesian coordinate system (x, y, z), but may be described using another coordinate system, and the embodiment is not limited to this. In the drawings, the x and y axes indicate directions perpendicular to the z axis, which is the optical axis direction, and the z axis direction, which is the optical axis OA direction, is referred to as a 'first direction' and the x axis direction is referred to as a ' And the y-axis direction may be referred to as a " third direction ".

The "camera-shake correction device" applied to a small-sized camera module of a mobile device such as a smart phone or a tablet PC is to prevent the outline of the captured image from being formed due to the vibration caused by the hand- ≪ / RTI >

The "auto focusing device" is a device that automatically focuses an image of a subject on an image sensor surface. The camera shake correcting device and the auto focusing device may be variously configured. In the lens driving device according to the embodiment, the optical module composed of at least one lens is moved in the first direction, or the second And the third direction to perform the camera shake correcting operation and / or the auto focusing operation.

Fig. 1 shows a perspective view of a lens driving apparatus 100 according to the embodiment, Fig. 2 shows an exploded perspective view of the lens driving apparatus 100 shown in Fig. 1, Fig. 3 shows a cover member 300 And the lens driving apparatus 100 shown in FIG.

1 to 3, the lens driving apparatus 100 includes a bobbin 110, a first coil 120, a magnet 130, a housing 140, an upper elastic member 150, An elastic member 160, a second coil 170, a base 210, and a cover member 300.

First, the cover member 300 will be described.

The cover member 300 includes a bobbin 110, a first coil 120, a magnet 130, a housing 140, an upper elastic member 150, a lower elastic member 140, Member 160, and the second coil 170. [

The cover member 300 may be in the form of a box which is opened at the bottom and includes the top plate 301 and the side plates 302 and the bottom ends of the side plates 302a to 302d of the cover member 300 are housed in the housing 140, respectively. The shape of the top plate of the cover member 300 may be polygonal, e.g., square, octagonal, or the like.

The cover member 300 may have a hollow on the top plate 301 to expose a lens (not shown) coupled to the bobbin 110 to external light. In addition, a window made of a light-transmitting material may be additionally provided in the hollow of the cover member 300 to prevent foreign substances such as dust and moisture from penetrating into the camera module.

The cover member 300 may be made of a nonmagnetic material such as SUS to prevent the cover member 300 from adhering to the magnet 130, but may be formed of a magnetic material to function as a yoke.

Next, the bobbin 110 will be described.

FIG. 4A is a first perspective view of the bobbin 110 shown in FIG. 1, and FIG. 4B is an assembled perspective view of the bobbin 110 and the first coil 120 shown in FIG.

4A and 4B, the bobbin 110 is disposed inside the housing 140 and can move in a first direction by an electromagnetic interaction between the coil 120 and the magnet 130.

A lens (not shown) may be directly coupled to the inner circumferential surface 110a of the bobbin 110, but is not limited thereto. For example, the bobbin 110 may include a lens barrel (not shown) in which at least one lens is installed, and the lens barrel may be coupled to the inside of the bobbin 110 in various manners.

The bobbin 110 may have a hollow for mounting a lens or lens barrel. The hollow shape of the bobbin 110 may correspond to the shape of the lens or lens barrel to be mounted and may be, for example, circular, elliptical, or polygonal, but is not limited thereto.

The bobbin 110 has at least one engaging groove or engaging projection 113 disposed on the upper surface and engaged with and fixed to the inner frame 151 of the upper elastic member 150 and a lower elastic member 160 And at least one engaging protrusion 117 which is engaged with and fixed to the inner frame 161 of the main body 110. [

The bobbin 110 may have an upper side recess 112a provided in one area of the upper surface corresponding to or aligned with the frame connection part 153 of the upper side elastic member 150. [ The bobbin 110 may have a lower side flush groove 112b in one area of the lower surface corresponding to or aligned with the connection portion 163 of the lower elastic member 160. [ When the bobbin 110 moves in the first direction by the upper side escape groove 112a and the lower side escape groove 112b of the bobbin 110, the connection portions 153 and 163 of the upper and lower elastic members 150 and 160 And the bobbin 110 can be eliminated, so that the connection portions 153 and 163 of the upper and lower elastic members 150 and 160 can be more easily elastically deformed.

In another embodiment, the connecting portion of the upper elastic member and the bobbin are designed not to interfere with each other, so that the upper side escape groove and / or the lower side escape groove of the bobbin may not be provided.

The bobbin 110 may have at least one groove 105 in which the first coil 120 is disposed on the outer circumferential surface 110b.

The first coil 120 is placed or seated in the groove 105 of the bobbin 110 or the first coil 120 is arranged in the groove 105 of the bobbin 110 so as to rotate clockwise or counterclockwise with respect to the optical axis OA The coil 120 can be directly wound or wound.

The shape and the number of the grooves 105 of the bobbin 110 may correspond to the shape and the number of the coils disposed on the outer peripheral surface of the bobbin 110. In another embodiment, the bobbin 110 may not have a groove for coil seating, and the first coil 120 may be directly wound or fixed to the outer circumferential surface of the bobbin 110 without grooves.

Next, the first coil will be described.

The first coil 120 is disposed on the outer peripheral surface 110b of the bobbin 110 and has an electromagnetic interaction with the magnet 130 disposed on the housing 140. [

A driving signal may be applied to the first coil 120 to generate an electromagnetic force due to an electromagnetic interaction with the magnet 130. [ The driving signal provided at this time may include an alternating current signal or may include an alternating current signal and a direct current signal. For example, the alternating signal may be a sinusoidal wave or a pulse signal (e.g., a PWM signal).

The bobbin 110 elastically supported by the upper and lower elastic members 150 and 160 can move in the first direction by an electromagnetic force generated by an electromagnetic interaction between the first coil 120 and the magnet 130. [ It is possible to control the movement of the bobbin 110 in the first direction by controlling the electromagnetic force, thereby performing the auto focusing function.

The first coil 120 may be wound so as to surround the outer circumferential surface 110b of the bobbin 110 so as to rotate clockwise or counterclockwise about the optical axis. For example, the first coil 120 may be disposed or wound in the groove 105 provided in the outer peripheral surface 110b of the bobbin 110. [

In an alternative embodiment, the first coil 120 may be implemented as a coil ring that is wound clockwise or counterclockwise about an axis perpendicular to the optical axis, and the number of coil rings is equal to the number of magnets 130 But is not limited thereto.

The first coil 120 may be electrically connected to at least one of the upper or lower elastic members 150 and 160. A driving signal may be applied to the first coil 120 through at least one of the upper or lower elastic members 150 and 160. [

Next, the housing 140 will be described.

Fig. 5 shows a perspective view of the housing 140 shown in Fig. 1, and Fig. 6 shows a combined perspective view of the housing 140 and the magnet 130. As shown in Fig.

5 and 6, the housing 140 supports the magnet 130 and accommodates the bobbin 110 on the inner side so that the bobbin 110 can move in the first direction.

The housing 140 may be entirely hollow and may include first sides 141 and second sides 142 that form a hollow.

For example, the housing 140 may have a plurality of sides 14,142 that form a polygonal (e.g., rectangular, or octagonal) or circular hollow. The upper surface of the plurality of sides 141, 140 may be formed.

For example, the housing 140 may include first side portions 141 that are spaced apart from one another and second side portions 142 that are spaced apart from one another.

For example, the first side portions 141 of the housing 140 may be disposed at positions corresponding to the side plates of the cover member 300.

For example, the length of each of the first sides 141 of the housing 140 may be greater than the length of each of the second sides 142. For example, the first side portions 141 of the housing 140 may be portions corresponding to the sides of the housing 140, and the second side portions 142 of the housing 140 may correspond to the corners of the housing 140 . The second side 142 of the housing 140 can be represented by "corner portion ".

Magnets 130 may be disposed or installed on the first side portions 141 of the housing 140. For example, the first side portions 141 of the housing 140 may have a groove 141a in which the magnet 130 is seated, disposed, or fixed. In FIG. 5, the magnet grooves 141a are not limited to the shape of the through-hole, but may be a groove.

The housing 140 may have a first stopper 143 projecting from the upper surface.

The first stopper 143 of the housing 140 prevents the cover member 300 and the housing 140 from colliding with each other and prevents the upper surface of the housing 140 from contacting the upper surface of the cover member 300 It is possible to prevent direct collision with the inner surface.

An upper frame support protrusion 144 to which the outer frame 152 of the upper elastic member 150 is coupled may be provided on the upper surface of the housing 140. A lower frame support protrusion (not shown) may be provided on the lower surface of the housing 140, to which the outer frame 162 of the lower elastic member 160 is coupled.

A lower guide groove 148 may be formed at a lower portion of the second side portions 141 and 142 of the housing 140 to insert, fasten, or engage the guide member 216 of the base 210. The lower guide groove 148 of the housing 140 and the guide member 216 of the base 210 can be coupled by the adhesive member 12 (see FIG. 11), and the housing 140 can be coupled with the base 210 .

The lower end 25 (see FIG. 6) of the first side portions 141 of the housing 140 coupled to the base 210 may be in contact with the upper edge of the upper portion 210b of the base 210.

The housing 140 may have an outer protrusion 40 on the outer surface 35 of each of the first sides 141. The outer protrusion 40 of the housing 140 may extend from the lower end of the first side portions 141 of the housing 140 to the lower end of the base 210.

The outer protrusion 40 of the housing 140 may be disposed to correspond to the straight portion 170a of the second coil 170 disposed on the base 210 (see FIG. 12).

The outer protruding portion 40 of the housing 140 in the direction perpendicular to the optical axis OA can overlap the straight portion 170a of the coil 170. [

For example, the outer projecting portion 40 of the housing 140 may be opposed to the linear portion 170a of the second coil 170 disposed on the base 210 in the first horizontal direction 15a (see FIG. 12) .

The entire area of the linear portion 170a of the second coil 170 disposed on the base 210 can be overlapped with the outer protruding portion 40 of the housing 140 in the first horizontal direction 15a .

The length L1 in the second horizontal direction of the outer projecting portion 40 of the housing 140 is larger than the length L1 in the second horizontal direction 15b of the linear portion 170a of the second coil 170 It can be longer or the same length.

The outer protrusion 40 of the housing 140 may be located outside the straight portion 170a of the second coil 170. [

The outer protrusion 40 of the housing 140 in the direction of the optical axis can also be overlapped with the side plates 302a to 302d of the cover member 300. [

Also, the outer protrusion 40 of the housing 140 in the direction of the optical axis may not overlap with the magnet 130, but is not limited thereto. For example, the outer protrusion 40 of the housing 140 in the direction of the optical axis may be at least partially overlapped with the magnet 130.

The lower end 25 of the first side portions 141 of the housing 140 overlaps the second coil 170 disposed in the base 210 in the direction of the optical axis while the outer projecting portion 40 of the housing 140 overlaps Does not overlap with the linear portion 170a of the second coil 170 arranged in the optical axis 210 in the optical axis direction.

The housing 140 and the cover member 300 are coupled between the outer protruding portion 40 of the housing 140 and the side plates 302a to 302d of the cover member 300 so as to prevent foreign substances Adhesive members or sealing members 18a and 18b (see Figs. 16A and 16B) can be disposed.

The outer protrusion 40 may protrude outward from the inner side of the first side 141 with respect to the outer side of the first side 141 of the housing 140, And may protrude in the direction from the housing 140 toward the base 210.

The outer protrusion 40 of the housing 140 protrudes from the inner side surface of the first side 141 of the housing 140 in the direction of the outer side 35 and protrudes from the inner side surface of the outer protrusion 40 and the inner side surface of the housing 140 Since there is a step between the inner sides of the first side 141, a space for the placement of the second coil 170 can be ensured and the spatial interference between the cover member 300 and the second coil 170 And the second coil 170 can be protected.

A portion of the second coil 170 may protrude out of the groove 201 of the base 210 in the process of winding the second coil 170 on the base 210. The outer protrusion The portion of the second coil 170 projecting out of the groove 201 may be damaged by the lower ends of the side plates 302a to 302d of the cover member 300, An electrical disconnection may occur in the first electrode 170.

If the outer protrusion 40 is not provided in the housing 140 and the lower end of the cover member extends to the lower end portion of the base 210, a gap between the cover member 300 and the housing 140 may be large So that the sealing member is not spread widely in the space between the cover member 300 and the housing 140, so that a strong sealing effect can not be obtained and the foreign matter can be introduced into the cover member from the outside.

The embodiment can prevent the second coil 170 from being damaged by the cover member 300 by providing the outer protruding portion 40 provided on the outer surface of the side portions of the housing 140, 170 and the cover member 300 can be prevented from being short-circuited.

Also, in the embodiment, since the space between the outer projecting portion 40 and the cover member 300 is filled by the adhesive member or the sealing member 18a, 18b (see Figs. 16A and 16B), the housing 140 and the cover member 300 can be strengthened and the foreign matter can be prevented from flowing into the cover member.

The bottom portion 210a of the base 210 located below the groove 201 is located on the outer side of the upper portion 210b of the base 210 And an area 211 protruding from the inner surface of the base 210 in the outer surface direction. The outer protrusion 40 of the housing 140 may overlap the protruded area 211 of the lower end 210a of the base 210 in the direction of the optical axis and the lower end of the outer protrusion 40 may overlap the base 210. [ May be disposed adjacent to the protruding area 211 of the lower end portion 210a of the base plate 210. [

A housing 140 and a cover member 300 are attached to the outer protrusion 40 of the housing 140 and a bonding member or a sealing member for preventing foreign substances from entering the inside of the cover member 300 from the outside, (See Figs. 18A and 18B, Figs. 16A and 16B) may be provided.

The depression 41 may be positioned so as to abut the interface between the outer projecting portion 40 and the outer surface of the first side of the housing 140. For example, the depression 41 may be disposed at the upper or upper center of the outer protrusion 40 and may have an opening 40a that opens to the upper surface of the outer protrusion 40. [

An inner protrusion 42 protruding in the inner side direction from the outer surface of the outer protrusion 40 corresponding to the depressed portion 41 may be provided on the inner side surface of the outer protrusion 40 of the housing 140. [

For example, the inner projecting portion 42 may be formed in the same size or shape as the depressed portion 41, and the height at which the inner projecting portion 42 protrudes from the inner side surface of the outer projecting portion 40, May be the same as the depth, but is not limited thereto.

The thickness of the portion of the outer protruding portion 40 provided with the depressed portion 41 may be reduced and the durability of the outer protruding portion 40 may be lowered if the depressed portion 41 is provided in the outer protruding portion 40 having a constant thickness . Therefore, in the embodiment, the inner protrusion 42 is provided at the position of the inner side surface of the outer protrusion 40 corresponding to the depression 41, so that the durability of the outer protrusion 40 can be prevented from deteriorating.

Fig. 15 shows a sectional view in the EF direction of the lens driving apparatus 100 shown in Fig. 1, Fig. 16a shows a first side view of the lens driving apparatus 100 shown in Fig. 1, 2 shows a second side view of the lens driving apparatus 100 according to the present invention.

15, 16A and 16B, the side plates 302a to 302d of the cover member 300 are connected to the connection terminals 164-1 to 164-4, the second bonding portions 16a and 16b, And the outer protrusions 40, as shown in FIG.

For example, the side plates 302a to 302d of the cover member 300 are formed to expose the connection terminals 164-1 to 164-4, the second bonding portions 16a and 16b, and the outer protrusions 40 A first area S1, and a second area S2 that is a remaining area excluding the first area S1.

The first region S1 includes a third region S3 for exposing the outer projecting portion 40, a fourth region S4 for exposing the connection terminals 164-1 to 164-4, And a fifth area S5 for exposing the first areas 16a and 16b.

The lower end of the first area S1 of the cover member 300 may be located on the outer protrusion 40 and the lower end of the second area S2 of the cover member 300 may be located on the lower end of the first area S1 It can be extended to the bottom. For example, the lower end of the second region S2 of the cover member 300 may extend to the lower end portion 210a of the base 210. [

For example, the lower end of the fourth region S4 may be located on the lower end of the third region S3, and the lower end of the fifth region S5 and the lower end of the third region S3 may be located at the same height .

The side plates 302a to 302d of the cover member 300 and the side plates 302a to 302d of the cover member 300 and the outer projections 40 of the housing 140 can be easily joined to each other, The lower end of the first area S1 of the cover member 300 can be aligned or aligned with the upper end of the outer protrusion 40 in the direction of the optical axis and the second area S2 of the side plate 302a to 302d of the cover member 300 S2 may be faced or aligned in the optical axis direction from the edge of the upper surface of the lower end portion 210a of the base 210. [

The edges of the upper surface of the outer protrusion 40 and the upper surface of the lower portion 210a of the base 210 may be in contact with each other but not limited thereto and may be spaced from each other in other embodiments.

The lower end of the second region S2 of the side plates 302a to 302d of the cover member 300 and the upper surface of the lower end portion 210a of the base 210 may be spaced apart from each other, They may be in contact with each other in the embodiment.

For example, the outer surface of the lower end portion 210a of the base 210, the outer surface of the outer projecting portion 40 of the housing 140, and the third region S3 of the side plate of the cover member 300, But it is not limited thereto.

And is spaced apart from the opening 40a of the depression 41 provided in the outer projecting portion 40 of the housing 140 and the lower end of the first region S1 of the side plates 302a to 302d of the cover member 300 Space can exist. An adhesive member or a sealing member is injected through the opening 40a of the depression 41 to cover the lower end of the first area S1 of the side plates 302a to 302d of the cover member 300 and the cover member An adhesive member or a sealing member 18a or 18b may be disposed between the inner surface of the housing 140 and the outer surface of the first side of the housing 140, as shown in FIGS. 16A and 16B.

Next, the magnet 130 will be described.

The magnet 130 at the initial position of the bobbin 110 may be disposed on the side of the housing 140 to correspond or align with the first coil 120. Here, the initial position of the bobbin 110 is the initial position of the AF moving part in the state where no power is applied to the first coil 120, or the upper and lower elastic members 150 and 160 are elastically deformed only by the weight of the AF moving part It can be the position where the AF operation section is placed. The AF moving part may include configurations mounted on the bobbin 110 and the bobbin 110.

For example, the magnet 130 may be disposed in the groove 141a of the housing 140 to overlap the first coil 120 in the second direction or the third direction.

In another embodiment, the first side 141 of the housing 140 may not have a groove 141a formed therein, and the magnet 130 may be formed on the outer side of the first side 141 of the housing 140, Or may be disposed on any one of the side surfaces.

The shape of the magnet 130 may have a shape corresponding to each of the first side portions 141 of the housing 140, for example, a rectangular parallelepiped shape, but is not limited thereto.

The magnet 130 may be a single-pole magnet or a double-pole magnet disposed so that the surface facing the first coil 120 is an S-pole and the outer surface is an N-pole. However, the present invention is not limited to this, and it is also possible to configure the other way around.

The number of the magnets 130 may be four or more and the number of the magnets 130 may be at least two and the surface of the magnet 130 facing the first coil 120 may be flat But it is not limited thereto and may be formed as a curved surface.

Next, the upper elastic member 150 and the lower elastic member 160 will be described.

7 shows the coupling degree of the bobbin 110, the first coil 120, the upper elastic member 150, the lower elastic member 160, the base 210, and the second coil 170, 9 shows an exploded perspective view of the base 210 and the lower elastic member 160 to which the second coil 170 is coupled and FIG. 9 shows a perspective view of the second coil 170, the base 210, 10 shows the arrangement of the second bonding portion 16a and the connection terminal 164-3 disposed in the base 210 and FIG. 11 shows the arrangement of the base 210 and the magnet 130 1 to 130-4 are omitted, and Fig. 14 shows a sectional view in the AB direction of the lens driving apparatus shown in Fig. 2. In Fig.

7 to 11 and 14, the upper elastic member 150 and the lower elastic member 160 are coupled to the bobbin 110 and the housing 140 and elastically support the bobbin 110.

For example, the upper elastic member 150 can engage with the upper (or upper surface, or upper) of the bobbin 110 and the upper (or upper surface, or upper) of the housing 140.

The lower elastic member 160 may engage with the lower (or lower surface, or lower surface) of the bobbin 110 and the lower (or lower surface, or lower surface) of the housing 140.

In FIG. 7, the upper elastic member 150 is not divided into a plurality, but is not limited thereto. In other embodiments, the upper elastic member 150 may include a plurality of elastic members spaced from each other.

The upper elastic member 150 includes a first inner frame 151 coupled with the upper portion of the bobbin 110, a first outer frame 152 coupled with the upper portion of the housing 140, And a first connection part 153 connecting the second outer frame 152. [

The first inner frame 151 of the upper elastic member 150 may be provided with a through hole 151a to be coupled with the upper support protrusion 113 of the bobbin 110. The first outer frame 152 may be provided with a housing 140 A through hole 152a may be provided to be engaged with the upper frame support protrusion 144 of the upper frame 152. [

The lower elastic member 160 may include elastic members that are divided or separated into two or more. For example, the elastic members may be represented by springs.

For example, the lower elastic member 160 may include first to fourth elastic members 160-1 to 160-4 that are spaced apart from each other, and the first to fourth elastic members 160-1 to 160- 4 can be electrically separated from each other.

For example, the first coil 120 may be electrically connected to any two of the elastic members 160-1 to 160-2 of the lower elastic member 160, and the second coil 170 may be electrically connected to the elastic members 160 -1 to 160-2, respectively.

Each of the first through fourth elastic members 160-1 through 160-4 includes a second inner frame 161 coupled with a lower portion of the bobbin 110, a second outer frame coupled with a lower portion of the housing 140 162, and a second connection portion 163 connecting the second inner frame 161 and the second outer frame 162.

The second inner frame 161 of the lower elastic member 160 may be provided with a through hole 161a to be coupled with the lower support protrusion 117 of the bobbin 110 and the second outer frame 162 may be provided with a housing 140 And a through hole 162a is formed in the lower frame support protrusion.

For example, the first coil 120 may be bonded to any two of the elastic members 160-1 to 160-4.

For example, the second coil 170 may be bonded to the other two outer frames of the elastic members 160-1 to 160-4.

The upper elastic member 150 and the lower elastic member 160 may be realized as leaf springs, but the present invention is not limited thereto, and may be realized by a coil spring, a suspension wire, or the like.

Each of the first and second connection portions 153 and 163 may be bent or curved (or curved) at least once to form a predetermined pattern. The bobbin 110 can be elastically (or elastically) supported by the first and second connection portions 153 and 163 in the first direction by the positional change and micro-deformation of the bobbin 110 in the first direction.

A damper may be disposed between the first connection part 153 of the upper elastic member 150 and the upper surface of the bobbin 110 to prevent oscillation during movement of the bobbin 110. [ A damper (not shown) may be disposed between the second connection portion 163 of the lower elastic member 160 and the lower surface of the bobbin 110.

Or the coupling portion of the bobbin 110 and the housing 140 with the upper elastic member 150 or the coupling portion of each of the bobbin 110 and the housing 140 and the lower elastic member 160 may be applied . For example, the damper may be gel-like silicon.

For example, the first to fourth elastic members 160-1 to 160-4 may be separated from or spaced from each other at the first side portions 141 of the housing 140.

The first bonding portions 15a and 15b for bonding both ends of the first coil 120 to one ends of the second inner frames 161 of the first and second elastic members 160-1 and 160-2 ) May be provided.

The first bonding portions 15a and 15b are provided on the second inner frame because the second inner frame 161 is closer to the bobbin 110 than the second outer frame 163, So as to facilitate bonding.

Second bonding portions 16a and 16b for bonding both ends of the second coil 170 are formed on the second outer frames 163 of the third and fourth elastic members 160-3 and 160-4 .

The reason why the second bonding portions 16a and 16b are provided in the second outer frame 163 is that the second outer frame 163 is adjacent to the outer surface of the second inner frame 161 And to facilitate bonding with the second coil 170.

The one end of the second coil 170 can be bonded to the second bonding portion 16a of the third elastic member 160-3 by the adhesive member such as the solder 20 170 and the other end may be bonded to the second bonding portion 16b of the fourth elastic member 160-4.

The first coil 120 is connected to the first bonding portions 15a and 15b provided on the second inner frame 161 of the lower elastic member 160 and the second coil 170 is connected to the first elastic member 160 By connecting to the second bonding portions 16a, 16b provided in the second outer frame 163, the embodiment can reduce the distance between the two points for bonding, thereby facilitating bonding.

The first bonding portions 15a and 15b of the lower elastic member 160 are connected to ends of the second inner frames of the elastic members 160-1 and 160-2 facing each other in two directions or in a third direction But is not limited thereto.

The second bonding portions 16a and 16b are connected to the outer surfaces of the second outer frames 163 of the third and fourth elastic members 160-3 and 160-4 and the second outer frames 163, And extend in the direction toward the base 210.

For example, the second bonding portion 16a may be bent in the direction toward the base 210 from the second outer frame 163 of the third elastic member 160-3, and the second bonding portion 16b may be bent 4 elastic member 160-4 in the direction of the base 210 from the second outer frame 163 of the elastic member 160-4.

The reason why the second bonding portions 16a and 16b are bent and extended in the direction from the second outer frame 163 toward the base 210 is that the second coil 170 And to facilitate the bonding of the second bonding portions 16a and 16b and the second coil 170 by reducing the spacing distance.

For the first and second bonding portions 15a, 15b, 16a, and 16b, the "bonding portion" may be replaced with a pad portion, a connection terminal portion, a solder portion, or an electrode portion.

Each of the first to fourth elastic members 160-1 to 160-4 is connected to the outer surface of the second outer frame 162 and is bent in the direction from the second outer frame 163 toward the base 210. [ And may include connecting terminals 164-1 to 164-4 extending from the connecting terminals 164-1 to 164-4.

Each of the connection terminals 164-1 to 164-4 of the first to fourth elastic members 160-1 to 160-4 is bent in the direction from the second outer frame 162 to the base 210 And can be disposed apart from each other.

Each of the connection terminals 164-1 to 164-4 of the first to fourth elastic members 160-1 to 160-4 is connected to a corresponding one of the first depressions 205a to 205d provided in the base 210 They can be placed, seated, or inserted into any one of them.

For example, the first connection terminals 164-1 and 164-2 of the first and second elastic members 160-1 and 160-2 are disposed on the first outer surface of the base 210, It can be brought into contact with the outer surface.

The second connection terminals 164-3 and 164-4 of the third and fourth elastic members 160-3 and 160-4 are disposed on the second outer side surface of the base 210, . For example, the first outer side surface and the second outer side surface of the base 210 may be opposed to each other or opposite to each other.

The second bonding portion 16a of the third elastic member 160-3 may be disposed on the third outer surface of the base 210 and may contact the third outer surface. The second bonding portion 16b of the fourth elastic member 160-4 may be disposed on the fourth outer surface of the base 210 and the third outer surface and the fourth outer surface of the base 210 may face each other Or may be located opposite to each other.

The connection terminals 164-1 to 164-4 of the first to fourth elastic members 160-1 to 160-4 can be exposed from the base 210 and the connection terminals 164-1 to 164-4 -4) can be electrically separated from each other.

For example, the inner surfaces of each of the connection terminals 164-1 to 164-4 disposed in the first depressions 205a to 205d are connected to one surface (e.g., the bottom surface) of the corresponding first depressions 205a to 205d, .

The outer surfaces of each of the connection terminals 164-1 to 164-4 disposed in the first depressions 205a to 205d may be exposed from the outer surface of the base 210 and the connection terminals 164-1 to 164- 164-4 may be exposed from the lower surface of the base 210. [

The lower ends of the second bonding portions 16a and 16b may be positioned on the groove 201 of the base 210 and the lower ends of the connection terminals 164-1 to 164-4 may be positioned on the groove 210 of the base 210. [ Lt; RTI ID = 0.0 > 201 < / RTI > For example, the length in the optical axis direction of each of the connection terminals 164-1 to 164-4 with respect to the outer frame 151 of the upper elastic member 150 is set to be shorter than the length in the optical axis direction of each of the second bonding portions 16a, 16b Lt; / RTI >

The depths of the first depressions 205a to 205d may be greater than the thickness of the connection terminals 164-1 to 164-4 and the depth of the connection terminals 164-1 to 164-4 disposed in the first depressions 205a to 205d To 164-4 do not protrude out of the first depressions 205a to 205d.

The connection terminals 164-1 to 164-4 may be electrically connected to external wirings or external elements by a conductive member, for example, soldering or the like, in order to supply power or signals from the outside.

If the solder bonded to the connection terminals 164-1 to 164-4 protrudes outside the outer surface of the base 210, the solder bonded to the connection terminals 164-1 to 16-4 Contact or collision with the cover 300 may occur, which may result in electrical short circuit or disconnection. The embodiment sufficiently secures the depths of the first depressions 205a to 205d so that the solder bonded to the connection terminals 164-1 to 164-4 does not protrude out of the outer surface of the base 210, Described electrical short circuit or disconnection can be prevented.

If the first and second coils 120 and 170 are directly bonded to the connection terminals 164-1 to 164-4 by the first solder, the connection terminals 164- 1 to 164-4), the first solder may melt and the first and second coils 120 and 170 may be electrically disconnected.

The first and second bonding portions 15a, 15b, 16a and 16b to which the first and second coils are bonded and the connection terminals 164-1 to 164-4 to be electrically connected to the outside are separately provided It is possible to prevent the first and second coils 120 and 170 from being disconnected from each other when the soldering is performed on the connection terminals.

With respect to the connection terminals 164-1 to 164-4 described above, the "connection terminal" can be replaced with a pad portion, a bonding portion, a solder portion, or an electrode portion.

The first and second connection terminals 164-1 and 164-2 of the first and second elastic members 160-1 and 160-2 provided with the first bonding portions 15a and 15b are connected to the first coil 120 And the third and fourth connection terminals of the third and fourth elastic members 160-3 and 160-4 provided with the second bonding portions 16a and 16b may be provided with a driving signal for driving the third and fourth elastic members 160-3 and 160-4, The induced voltage of the second coil 170 can be outputted to the outside via the first coil 164-3 and the second coil 164-4.

The base 210 is coupled to the housing 140 and can form a receiving space for the bobbin 110 and the housing 140 together with the cover member 300. The base 210 may have a hollow corresponding to the hollow of the bobbin 110 and / or the hollow of the housing 140 and may have a shape that matches or corresponds to the cover member 300, .

The base 210 may include a guide member 216 (see FIG. 8) projecting a predetermined height upward in each of the four corner portions. The guide member 216 may be a polygonal columnar shape protruding from the upper surface of the base 210 so as to be perpendicular to the upper surface of the base 210, but is not limited thereto.

The guide member 216 may be inserted or fastened or coupled to the lower guide groove 148 of the housing 140 by an adhesive member 12 (see FIG. 11) such as epoxy or silicone.

The second coil 170 may be disposed under the lower elastic member 160 and may be arranged to be wound on the outer surface of the base 210 in the clockwise or counterclockwise direction with respect to the optical axis.

For example, a groove 201 may be formed on the outer surface of the base 210.

For example, the groove 201 of the base 210 may have a recessed structure from the outer surface of the base 210. The grooves 201 may be spaced apart from the upper and lower surfaces of the base 210, respectively. This can prevent the second coil 170, which is disposed or wound in the groove 201 of the base 201, from being detached from the base 210.

The length of the second coil 170 wound on the groove 201 of the base 210 in the optical axis direction may be smaller than the length in the direction perpendicular to the optical axis from the inner circumferential surface to the outer circumferential surface of the base 210. The height or the length of the lens driving device 100 in the direction of the optical axis can be reduced.

The base 210 includes first sides 218a corresponding to or aligned with the first sides 141 of the housing 140 and second sides 218b corresponding to or aligned with the second sides 142 of the housing 140. [ 218b. ≪ / RTI > The first sides 218a of the base 210 may have flat outer surfaces and the second sides 218b of the base 210 may have curved outer surfaces.

Each of the second side portions 218b of the base 210 connects adjacent two second sides to each other and may be located at the corner or edge of the base. For example, the second side 218b may be represented as a corner portion.

The groove 201 of the base 210 may be in the form of a depression from the outer surface of the first side portions 218a and the second side portions 218b and may be ring-shaped.

At least one of the first side portions 218a of the base 210 has first to fourth connection terminals 164-1 to 164-4 of the first to fourth elastic members 160-1 to 160-4, 164-4) corresponding to the first depressions 205a-205d.

And a second concave portion 13a in which the second bonding portions 16a and 16b are disposed on the outer surface of at least one of the first side portions 218a of the base 210).

For example, the first depressions 205a to 205d of the base 210 may be spaced apart from each other on the outer sides of the first side portions facing each other of the base 210, May be provided on the outer surfaces of the first side portions of the base 210 on which the one depressions 205a to 205d are not provided, but the present invention is not limited thereto.

For example, according to the positions where the first to fourth connection terminals 164-1 to 164-4 are disposed, the first depressions 205a are formed on the outer surfaces of the two first side portions of the base 210, To 205d may be provided.

For example, the first depressions 205a-205d and the second depressions 13a each include an upper opening that opens into the upper surface of the base 210 and a lower opening that opens into the lower surface of the base 210 .

The distance between the depressed one surface of the first depressed portions 205a to 205d and the depressed surface of the second depressed portion 13a with respect to the outer surface of the base 210, May be smaller than the distance of one side of the depressed portion of the base 201. The depressed depth of the first depressions 205a to 205d and the depressed depth of the second depressed portion 13a may be smaller than the depressed depth of the depressions 201, have.

The first to fourth connection terminals 164-1 to 164-4 of the lower elastic member 160 disposed in the first depressed portions 205a to 205d of the base 210 are inserted into the groove 210 of the base 210, The first to fourth connection terminals 164-1 to 164-4 and the second coil 170 are spaced apart from each other so that the first to fourth connection terminals 164-1 to 164-4 and the second coil 170 are not spatially interfered with each other .

The second coil 170 and the connection electrodes 164-1 to 164-4 are all disposed on the outer sides of the side portions 218a and 218b of the base 210 and the connection electrodes 164-1 to 164- 4 extend to the bottom of the groove 201 where the second coil 170 is disposed so that the second coil 170 and the connection electrodes 164-1 to 164-4 extend in the direction of the optical axis and in the direction perpendicular to the optical axis The spatial interference between them may occur.

In this case, by deepening the depth of the groove 201 in which the second coil 170 is disposed, spatial interference between the second coil 170 and the connection electrodes 164-1 to 164-4 can be avoided or escaped However, the injection process of the base 210 for deeply forming the depth of the groove 201 is not easy. When the depth of the groove 201 is deep, the second coil 170 wound on the groove 201 The predetermined length of the second coil 170 can not be ensured.

The induced voltage of the second coil 170 changes due to the change in the ambient temperature, and such a change in the induced voltage may cause malfunction of the AF drive. In order to accurately perform AF driving, temperature compensation is required. In order to facilitate temperature compensation, it is required that the resistance value of the second coil 170 be equal to or greater than a preset resistance value (for example, 30?).

Fig. 12 is a plan view showing a relative arrangement relationship between the connection electrodes 164-1 to 164-4 and the second coil 170, Fig. 13 is a sectional view taken along the CD direction of the lens driving apparatus 100 of Fig. 1 .

12 and 13, the second coil 170 disposed on the outer surface of the base 210 may have a ring shape including a straight portion and a curved portion. The portion of the second coil 170 that is linear is referred to as a "straight portion ", and the portion that is curved is referred to as a" curved portion ".

The first portion 170a of the second coil 170 disposed in the groove 210 provided in the first side portion 218a of the base 210 may be in a straight line shape, The second portion 170b of the second coil 171 disposed in the groove 210 provided in the first coil portion 218a may be curved. For example, the first portion 170a of the second coil 170 may be a straight portion, and the second portion 170b may be a curved portion.

For example, the depth of the groove 201 located at the first side 218a of the base 210 may be constant and may be less than the depth of the groove 210 located at the second side 218a.

The straight portion of the second coil 170 is connected to two connection terminals (e.g., 164-1 and 164-2, 164-3 and 164 -4). ≪ / RTI >

Each of the first to fourth connection terminals 164-1 to 164-4 may be disposed so as to overlap the second portion 170b of the second coil 170 in the first horizontal direction 15a.

For example, the first horizontal direction 15a may be a direction perpendicular to the outer surface of the first side portion 218a of the base 210 on which the connection terminals 164-1 to 164-4 are disposed.

The connection terminals 164-1 and 164-2 and 164-3 and 164-4 disposed on the outer surface of one of the first side portions 218a of the base 210 are connected to one of the above- In a second horizontal direction 15b with the first portion 170a of the second coil 170 disposed on the first side 218a of the first coil 218a.

For example, the second horizontal direction 15b may be perpendicular to the optical axis OA and parallel to the outer surface of the first side 218a of the base 210.

For example, the first portion 170a of the second coil 210 disposed on any one of the bases 210 is connected to two connections (not shown) disposed on the outer side of any one of the first side portions 218a of the base 210 May be disposed between the terminals (e.g., 164-1 and 164-2, and 164-3 and 164-4).

The connection terminals 164-1 and 164-2 and 164-3 and 164-4 disposed on the outer side of one of the first side portions 218a of the base 210 are connected to the second The connection terminals 164-1 and 164-2 disposed on the outer surface of one of the first side portions 218a of the base 210 and the connection terminals 164-1 and 164-2 disposed on the outer side of the first side portion 218a of the base 210 are arranged to overlap with the second portion 170b of the coil 170, 164-3 and 164-4 and the first portion 170a of the second coil 170 overlap in the second horizontal direction 15b, the connection terminals 164-1 and 164-2 and 164-3 And 164-4 and the second coil 170 can be arranged without spatially interfering with each other.

Therefore, the embodiment can reduce the depth of the groove 201 provided on the outer side surface of the base 210 for the spatial avoidance between the connection terminals and the second coil, and the second coil 170 Can be increased, and mold production and injection properties for forming the base 210 can be easily secured.

The second bonding portions 16a and 16b of the third and fourth elastic members 160-3 and 160-4 are connected to the second portion 170b of the second coil 170 in the first horizontal direction 15a, And may be overlapped with the first portion 170a of the second coil 160 in the second horizontal direction, but is not limited thereto.

9 and 12, the first spacing distance D1 may be smaller than the second spacing distance D2 (D1 <D2).

The first distance D1 is a distance between the reference line 501 passing through the center 401 of the base 210 and parallel to the optical axis OA and the second coil 170 disposed in the groove 201 of the base 210 It can be distance. For example, the first distance D1 may be the distance between the center 401 of the base 210 and the second portion 170b of the second coil 170.

The second spacing distance D2 may be the distance between the reference line 501 and the connection terminals 164-1 to 164-4 disposed in the first depressions 205a to 205d.

The connection terminals 164-1 to 164-4 of the lower elastic member 160 disposed in the first depressions 205a to 205d and the second coil 170 may be spaced apart from one another.

A part of the lower end of the side plate of the cover member 300 and the projected area 211 of the lower end part 210a of the base 210 may face each other in the optical axis direction. A part of the lower end of the side plate of the cover member 300 in the direction of the optical axis OA may overlap with the protruding area 211 of the lower end portion 210a of the base 210. [ At this time, the projected area 211 of the lower end portion 210a of the base 210 and the lower end of the side plate of the cover member 300 may be separated from each other, but are not limited thereto.

8 and 10, each of the third and fourth elastic members 160-3 and 160-4 includes one second bonding portion 16a and 16b and one connection terminal 164-3 and 164 -4). &Lt; / RTI &gt;

The second bonding portions 16a and 16b and the connection terminals 164-3 and 164-4 of the third and fourth elastic members 160-3 and 160-4 may be formed on the outer side surfaces of the base 210, As shown in FIG.

For example, each of the second bonding portion 16a and the connection terminal 164-3 of the third elastic member 160-3 may be formed of two (preferably two) And may be disposed on a corresponding one of the outer sides of the first sides.

For example, each of the second bonding portion 16a and the connection terminal 164-3 of the fourth elastic member 160-4 may include two first side portions 160a and 160b adjacent to the other second side portion of the base 210, May be disposed in any one of the outer surfaces of the first and second plates.

The reason that the second bonding portions 16a and 16b and the connection terminals 164-3 and 164-4 are disposed on the outer sides of the different first side portions of the base 210 is that the connection terminals 164-3 and 164- 16b are prevented from being transferred to the solder bonded to the second bonding portions 16a, 16b so that heat generated during the soldering process for electrically connecting the second bonding portions 16a, 16b to the second bonding portions 16a, 170 from being disconnected from each other.

The connection terminals 164-1 to 164-4 are connected from the second outer frame 162 of the elastic members 160-1 to 160-4 to the second coil 170 or the base 210 As shown in FIG.

In order to facilitate the electrical connection of the second coil 170, the second bonding portions 16a and 16b are formed on one side of the outer side of the base 210 located above the groove 201 of the base 210 .

11, the first width W1 of the first region 162-1 of the second outer frame 162 of each of the third and fourth elastic members 160-3 and 160-4 is the width The second width W2 of the second area 162-2 of the outer frame 162 and the third width W3 of the third area 162-3 (W1> W2, W1> W3).

The second region 162-2 is a region to which the connection terminal 162-2 is connected and the third region 162-3 is a region to which the second bonding portion 16b is connected and the first region 162- 1 may be a region connecting the second region 162-2 and the third region 162-3.

By enlarging the area of the first region 162-1, it is possible to widen the area of the connection terminal 164-4 which radiates heat generated during the lead-in, and as a result, It is possible to prevent the heat generated in the second bonding portion 16b from being transmitted to the second bonding portion 16b and to prevent the electrical connection between the second bonding portion 16b and the second coil 170 from being broken.

In order to support the housing 140 and the bobbin 110 in a balanced manner, the inner frame, the outer frame, and the connecting portions of the first to fourth elastic members 160-1 to 160-4 have the same shape , And may have a shape symmetrical to the origin with the optical axis as the origin.

The fourth width of the fourth region of the second outer frame 162 of each of the first and second elastic members 160-1 and 160-2 is greater than the width of the second outer frame 162, (W1 > W2, W1 > W3) of the fifth region of the first region and the sixth width of the sixth region.

The fourth region of each of the first and second elastic members 160-1 and 160-2 may be a region corresponding to the first region 162-1 of the third and fourth elastic members, May correspond to the second region 162-2, and the sixth region may correspond to the third region 162-3.

8, each of the first side portions 218a of the base 210 may include a third depression 17a corresponding to the inner side projection portion 42 of the housing 140. As shown in FIG.

For example, each of the outer surfaces of the first side portions 218a of the base 210 includes two first depressions 205a and 205b spaced apart from each other, and two first depressions 205a and 205b disposed between the first depressions 205a and 205b. Three depression portions 17a may be provided.

Each of the third depressions 17a may be positioned between two first depressions provided in a corresponding one of the outer surfaces of the base 210. [

For example, each of the third depressions 17a has an upper opening that opens into the upper surface of the base 210 and an upper opening that opens into the groove 201 to allow the inner protrusion 42 of the housing 140 to be easily placed or seated. As shown in FIG.

17 shows mutual inductance according to the distance between the first coil and the second coil.

17, in the structure in which the first coil as the AF drive coil is disposed on the upper side of the second coil as the sensing coil, the mutual inductance between the first coil and the second coil due to the upward movement of the first coil mounted on the bobbin Change.

Referring to FIG. 17, when the distance between the first coil and the second coil is less than 100 m, the linearity of the change in mutual inductance between the first coil and the second coil due to the displacement of the bobbin sharply decreases. Since the induced voltage generated in the second coil is proportional to the mutual inductance between the first coil and the second coil, when the distance between the first coil and the second coil is less than 100 mu m, the induction of the second coil due to the displacement of the bobbin The linearity of the change of the voltage drastically deteriorates.

Therefore, in the structure in which the first coil as the AF drive coil is disposed above the second coil as the sensing coil, in order to ensure the linearity of the induced voltage of the second coil, the distance between the first coil and the second coil at the highest point of the bobbin The design of the first coil and the second coil arrangement is restricted, and the overall thickness of the lens driving apparatus can be increased.

The second coil 170 is disposed on the base 210 positioned below the first coil 120. Therefore, when the bobbin 110 moves from the upper side, The two coils 170 are distant from each other. The distance between the first coil 120 and the second coil 170 at the initial position of the bobbin 110 in the case of unidirectional driving or at the lowest point of the bobbin 110 in the case of bidirectional driving is set to about 100 mu m The linearity of the induction voltage of the second coil is automatically maintained even when the bobbin 110 moves to the upper side. Therefore, the restriction of the arrangement of the driving coil and the sensing coil 170 can be relaxed, Can be reduced.

When the second coil 170 is disposed on the upper surface of the base 210, the thickness of the base 210 should be sufficiently taken into account to prevent interference with the lower elastic member. However, Is disposed on the side surface of the base 210, the thickness of the base 210 can be reduced.

Further, since the second coil 170 is arranged to wind on the side surface of the base 210, the length of one rotation of the second coil can be made long. Therefore, as compared with the case of the second coil disposed on the upper surface of the base 210, the magnitude of the induced voltage of the second coil 170 can be increased at the same number of rotations.

The number of revolutions of the second coil 170 wound on the base 210 may be greater than the number of revolutions of the first coil 120 wound on the bobbin 110. However, The number of revolutions of the second coil 170 wound on the bobbin 110 may be smaller than or equal to the number of revolutions of the first coil 120 wound on the bobbin 110. [

In general, in order to perform AF (Auto Focus) feedback control, a position sensor capable of detecting the displacement of the moving part of the AF and a separate power connection structure are required to drive the position sensor. Can occur.

Also, the linear section (hereinafter referred to as "first linear section") of the graph between the moving distance of the bobbin and the magnetic flux of the magnet detected by the position sensor may be limited by the positional relationship between the magnet and the position sensor.

Since the embodiment does not require a separate position sensor for detecting the displacement of the bobbin 110, it is possible to reduce the cost of the lens driving apparatus and improve the ease of manufacturing work.

In addition, since the mutual induction between the first coil 120 and the second coil 170 is used, the linear interval of the graph between the moving distance of the bobbin 110 and the induction voltage due to mutual induction is smaller than that of the first linear section . Accordingly, the embodiment can secure a wide range of linearity, improve the process defect rate, and perform more accurate AF feedback control.

18 is a sectional view of the lens driving apparatus 100-1 according to another embodiment.

The lens driving apparatus 100-1 shown in Fig. 18 further includes a magnetic member 172 disposed on the second coil 171 to increase the magnitude of the induced voltage generated in the second coil 171 . The magnetic member 171 and the second coil 171 may be ring-shaped and may have the same diameter. 12, the width of the magnetic member 171 may be the same as the width of the second coil 172. However, the width of the magnetic member 171 is not limited to that of the second coil 172, May be wider than the width.

The magnetic member 171 and the second coil 172 may be disposed in the groove 201. The lower surface of the magnetic member 171 can be in contact with the upper surface of the second coil 172.

In another embodiment, the magnetic element 172 may be disposed under the second coil 171. [

The magnetic member 171 may be an iron core or a ferrite core having magnetism. For example, the ferrite core may be MnZn or NiZn. The MnZn ferrite core can be used for a low frequency, and the NiZn ferrite core can be used for a high frequency.

Fig. 19 shows a cross-sectional view of a lens driving apparatus 100-2 according to still another embodiment.

Referring to FIG. 19, the magnetic member 171 may be disposed outside the second coil 171. The inner surface of the magnetic member 171 can contact the outer surface of the second coil. In another embodiment, the second coil may be located outside the magnetic member, and the outer surface of the magnetic member may contact the inner surface of the second coil.

20 is an exploded perspective view of the camera module 200 according to the embodiment.

20, the camera module includes a lens or lens barrel 400, a lens driving device 100, an adhesive member 612, a filter 610, a first holder 600, a second holder 800, A sensor 810, a motion sensor 820, a controller 830, and a connector 840.

A lens or lens barrel 400 may be mounted on the bobbin 110 of the lens driving apparatus 100.

The first holder 600 may be disposed below the base 210 of the lens driving apparatus 100. The filter 610 may be mounted to the first holder 600 and the first holder 600 may have a protrusion 500 on which the filter 610 is seated.

The adhesive member 612 can couple or attach the base 210 of the lens driving apparatus 100 to the first holder 600. [ The adhesive member 612 may serve to prevent foreign substances from flowing into the lens driving apparatus 100 in addition to the above-described adhesive role.

For example, the adhesive member 612 may be an epoxy, a thermosetting adhesive, an ultraviolet ray-curable adhesive, or the like.

The filter 610 may block the light of a specific frequency band in the light passing through the lens barrel 400 from being incident on the image sensor 810. The filter 610 may be an infrared cut filter, but is not limited thereto. At this time, the filter 610 may be arranged to be parallel to the x-y plane.

A hollow may be formed in a portion of the first holder 600 where the filter 610 is mounted so that light passing through the filter 610 can be incident on the image sensor 810. [

The second holder 800 may be disposed below the first holder 600 and the image sensor 810 may be mounted on the second holder 600. The image sensor 810 is a portion where an image included in the light is formed by light incident through the filter 610.

The second holder 800 may be provided with various circuits, elements, and a controller for converting an image formed on the image sensor 810 into an electrical signal and transmitting the electrical signal to an external device.

The second holder 800 can be implemented as a circuit board on which an image sensor can be mounted, a circuit pattern can be formed, and various devices can be coupled.

The image sensor 810 receives the image included in the light incident through the lens driving apparatus 100 and converts the received image into an electrical signal.

The filter 610 and the image sensor 810 may be spaced apart from each other in the first direction.

The motion sensor 820 is mounted on the second holder 800 and may be electrically connected to the controller 830 through a circuit pattern provided on the second holder 800. [

The motion sensor 820 outputs rotational angular velocity information based on the motion of the camera module 200. The motion sensor 820 may be implemented as a two-axis or three-axis gyro sensor, or an angular velocity sensor.

The controller 830 is mounted on the second holder 800 and may be electrically connected to the second position sensor 240 and the second coil 230 of the lens driving apparatus 100. For example, the second holder 800 may be electrically connected to the circuit board 250 of the lens driving apparatus 100, and the control unit 830 mounted on the second holder 800 may be electrically connected to the circuit board 250 2 position sensor 240, and the second coil 230, as shown in FIG.

The control unit 830 outputs a drive signal capable of performing camera-shake correction to the OIS moving part of the lens driving apparatus 100 based on the feedback signals provided from the second position sensor 240 of the lens driving apparatus 100 Can be output.

The connector 840 is electrically connected to the second holder 800 and may include a port for electrically connecting to the external device.

Further, the lens driving apparatus 100 according to the embodiment may form an image of an object in a space by using reflection, refraction, absorption, interference, or diffraction, which are characteristics of light, For the purpose of recording and reproduction of an image by an optical device, or for optic measurement for the purpose of propagation or transmission of an image. For example, the optical device according to the embodiment may include a smart phone and a portable terminal equipped with a camera.

FIG. 21 shows a perspective view of the portable terminal 200A according to the embodiment, and FIG. 22 shows a configuration diagram of the portable terminal shown in FIG.

21 and 22, the portable terminal 200A includes a body 850, a wireless communication unit 710, an A / V input unit 720, a sensing unit 740, an input / An output unit 750, a memory unit 760, an interface unit 770, a control unit 780, and a power supply unit 790.

The body 850 shown in FIG. 21 is in the form of a bar, but is not limited thereto. The body 850 may be a slide type, a folder type, a swing type, or a swing type in which two or more sub- , A swirl type, and the like.

The body 850 may include a case (casing, housing, cover, etc.) which forms an appearance. For example, the body 850 can be divided into a front case 851 and a rear case 852. Various electronic components of the terminal may be installed in the space formed between the front case 851 and the rear case 852. [

The wireless communication unit 710 may include one or more modules that enable wireless communication between the terminal 200A and the wireless communication system or between the terminal 200A and the network in which the terminal 200A is located. For example, the wireless communication unit 710 may include a broadcast receiving module 711, a mobile communication module 712, a wireless Internet module 713, a short distance communication module 714, and a location information module 715 have.

The A / V (Audio / Video) input unit 720 is for inputting an audio signal or a video signal and may include a camera 721 and a microphone 722.

The camera 721 may include a camera module 200 according to the embodiment shown in FIG.

The sensing unit 740 senses the current state of the terminal 200A such as the open / close state of the terminal 200A, the position of the terminal 200A, the presence of the user, the orientation of the terminal 200A, And generate a sensing signal for controlling the operation of the terminal 200A. For example, when the terminal 200A is in the form of a slide phone, it is possible to sense whether the slide phone is opened or closed. In addition, it is responsible for a sensing function related to the power supply of the power supply unit 790, whether the interface unit 770 is connected to an external device, and the like.

The input / output unit 750 is for generating an input or an output related to a visual, auditory or tactile sense. The input / output unit 750 can generate input data for controlling the operation of the terminal 200A and display information processed by the terminal 200A.

The input / output unit 750 may include a keypad unit 730, a display module 751, an audio output module 752, and a touch screen panel 753. [ The keypad unit 730 may generate input data by inputting a keypad.

The display module 751 may include a plurality of pixels whose color changes according to an electrical signal. For example, the display module 751 may be a liquid crystal display, a thin film transistor-liquid crystal display, an organic light-emitting diode, a flexible display, And a display (3D display).

The audio output module 752 outputs audio data received from the wireless communication unit 710 in a call signal reception mode, a call mode, a recording mode, a voice recognition mode, or a broadcast reception mode, Audio data can be output.

The touch screen panel 753 may convert a change in capacitance caused by a user's touch to a specific area of the touch screen into an electrical input signal.

The memory unit 760 may store programs for processing and controlling the control unit 780 and may store input / output data (e.g., telephone directory, message, audio, still image, You can save it temporarily. For example, the memory unit 760 may store an image, e.g., a photograph or a moving image, photographed by the camera 721. [

The interface unit 770 serves as a path for connection to an external device connected to the terminal 200A. The interface unit 770 receives data from an external device or supplies power to each component in the terminal 200A or allows data in the terminal 200A to be transmitted to an external device. For example, the interface unit 770 may include a wired / wireless headset port, an external charger port, a wired / wireless data port, a memory card port, a port for connecting a device equipped with the identification module, Output port, a video input / output (I / O) port, and an earphone port.

The controller 780 can control the overall operation of the terminal 200A. For example, the control unit 780 may perform related control and processing for voice call, data communication, video call, and the like.

The control unit 780 may include a multimedia module 781 for multimedia playback. The multimedia module 781 may be implemented in the control unit 180 or may be implemented separately from the control unit 780.

The control unit 780 can perform a pattern recognition process for recognizing handwriting input or drawing input performed on the touch screen as characters and images, respectively.

The power supply unit 790 can supply external power or internal power under the control of the controller 780 and supply power required for operation of each component.

The features, structures, effects and the like described in the embodiments are included in at least one embodiment of the present invention and are not necessarily limited to one embodiment. Further, the features, structures, effects, and the like illustrated in the embodiments can be combined and modified by other persons having ordinary skill in the art to which the embodiments belong. Therefore, it should be understood that the present invention is not limited to these combinations and modifications.

110: bobbin 120: first coil
130: Magnet 140: Housing
150: upper elastic member 160: lower elastic member
170: second coil 210: base
300: cover member.

Claims (20)

housing;
A bobbin disposed inside the housing for mounting the lens;
A first coil disposed on an outer circumferential surface of the bobbin;
A magnet disposed on the side of the housing in correspondence with the first coil;
A base disposed below said housing;
A second coil disposed on an outer surface of the base and generating an induced voltage by interaction with the first coil; And
First to fourth elastic members coupled to the bobbin and the housing and spaced apart from each other on an upper surface of the base,
Wherein each of the first and second elastic members includes a first bonding portion for bonding the first coil and a first connection terminal for electrical connection to the outside,
Each of the third and fourth elastic members includes a second bonding portion for bonding the second coil and a second connection terminal for electrical connection to the outside,
Wherein the second bonding portion and the second connection terminal are disposed on different outer sides of the base. The method according to claim 1,
The base includes a side portion and a corner portion disposed between adjacent two of the side portions,
Wherein each of the second bonding portion and the second connection terminal is disposed at a corresponding one of outer sides of two side portions adjacent to the corner portion. The method according to claim 1,
Wherein each of the first through fourth elastic members comprises:
An inner frame coupled to the bobbin;
An outer frame coupled to the housing; And
And a connecting portion connecting the inner frame and the outer frame,
Wherein the first bonding portion is provided on the inner frame,
And the second bonding portion and the first and second connection terminals are provided on the outer frame. The method of claim 3,
Each of the second bonding portion and the first and second connection terminals,
Wherein the base is bent in a direction from the outer frame toward the base, and is disposed on an outer surface of the base. 5. The method of claim 4,
Wherein a groove is provided on an outer side surface of the base to dispose the second coil,
And the second bonding portion is disposed on one region of the outer surface of the base located above the groove. 6. The method of claim 5,
Wherein the first and second connection terminals extend to other regions of the outer surface of the base located below the groove. 6. The method of claim 5,
Wherein first and second depressions are disposed on an outer surface of the base,
And a second depressed portion in which the second bonding portion is disposed is provided on an outer surface of the base. 8. The method of claim 7,
Wherein each of the first depressions and the second depressions includes an upper opening that opens to an upper surface of the base and a lower opening that opens to a lower surface of the base. 5. The method of claim 4,
The first connection terminals of the first and second elastic members are disposed on the first outer side of the base,
Second connection terminals of the third and fourth elastic members are disposed on a second outer surface of the base,
Wherein the first outer side surface and the second outer side surface of the base are opposite to each other. 10. The method of claim 9,
A second bonding portion of the third elastic member is disposed on a third outer side surface of the base,
A second bonding portion of the fourth elastic member is disposed on a fourth outer side surface of the base,
And the third outer side surface and the fourth outer side surface of the base are located opposite to each other. 5. The method of claim 4,
The width of the second region of the outer frame is larger than the width of the second region of the outer frame and the width of the third region of the outer frame,
The second region is a region to which the second connection terminal is connected, the third region is a region to which the second bonding section is connected, and the first region is a region connecting the second region and the third region Lens driving device. 11. The method of claim 10,
And the second coil is a ring shape including a straight portion and a curved portion. 13. The method of claim 12,
Wherein a linear portion of the second coil is located between first connection terminals disposed on a first outer side surface of the base and second connection terminals disposed on a second outer side surface of the base. 13. The method of claim 12,
The first connection terminals and the second connection terminals are overlapped with the curved portion of the second coil in the first horizontal direction and the first horizontal direction is perpendicular to the first outer side or the second outer side of the base Direction. 15. The method of claim 14,
Wherein the first connection terminals and the second connection terminals are overlapped with a linear portion of the second coil in a second horizontal direction, the second horizontal direction is perpendicular to the optical axis, and the first outer side surface or the second And the lens driving device is in a direction parallel to the outer surface. 13. The method of claim 12,
The second bonding portions of the third and fourth elastic members are overlapped with the curved portion of the second coil in the first horizontal direction and the first horizontal direction is perpendicular to the first outer side surface or the second outer side surface of the base The lens driving device being one direction. 17. The method of claim 16,
The second bonding portions of the third and fourth elastic members overlap the straight portion of the second coil in the second horizontal direction, the second horizontal direction is perpendicular to the optical axis, 2 is a direction parallel to the outer surface. The method according to claim 1,
Wherein a drive signal, which is an AC signal, is applied to the first coil, and the induced voltage responsive to the drive signal is generated in the second coil. lens;
The lens driving apparatus according to any one of claims 1 to 18, wherein the lens is moved; And
And an image sensor that converts an image incident through the lens driving device into an electrical signal. A display module including a plurality of pixels whose color changes by an electrical signal;
The camera module according to claim 19, which converts an image inputted through a lens into an electrical signal. And
And a controller for controlling the display module and the camera module.

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