KR20200001400A - Lens driving device and camera device - Google Patents

Abstract

The present invention relates to a lens driving device. According to an embodiment, the lens driving device includes: a housing; a bobbin placed in the housing; a first coil placed on the bobbin; a magnet placed in the housing and facing the first coil; a base placed under the housing; a substrate including a second coil facing the magnet, and placed on the base; an upper elastic member combined with the upper part of the bobbin and the upper part of the housing; and a support member combined with the base and the housing. The support member includes: a first combination part combined with the housing; a second combination part combined with the base; a connection part connecting the first and second combination parts; and a protruding part extended from the first combination part to have at least one part placed on the upper surface of the upper elastic member. The protruding part of the support member is curved inwards to be placed on the upper surface of the upper elastic member. Therefore, the present invention is capable of reducing defects in a soldering process.

Description

Lens driving device and camera device

This embodiment relates to a lens driving apparatus and a camera apparatus.

The contents described below provide background information on the present embodiment, but do not describe the prior art.

As the widespread use of various portable terminals and the commercialization of wireless Internet services, consumer demands related to portable terminals are diversifying, and various kinds of additional devices are installed in the portable terminals.

Among them, there is a camera device which photographs a subject as a photo or a video. On the other hand, in recent camera apparatuses, an auto focus function that automatically adjusts focus according to a distance of a subject is applied. In addition, a camera shake correction function is applied to prevent an image from being shaken due to the camera shake of the photographer.

The camera device may include a coil to perform an auto focus function and a camera shake correction function, and may use an elastic member as a conductive line to supply a current to the coil. By the way, in the conventional camera device, soldering is likely to occur intermittently at the engagement between the elastic members, and in this case, a product having poor current supply is manufactured, which causes a problem.

The present embodiment is to provide a lens driving device that minimizes the reduction in process defects by changing the shape of the upper soldering portion of the OIS spring (support member).

The lens driving apparatus according to the present embodiment includes a housing; A bobbin disposed within the housing; A first coil disposed on the bobbin; A magnet disposed in the housing and facing the first coil; A base disposed below the housing; A substrate including a second coil facing the magnet and disposed on the base; An upper elastic member coupled to an upper portion of the housing and an upper portion of the bobbin; And a support member coupled to the housing and the base, wherein the support member includes a first coupling portion coupled to the housing, a second coupling portion coupled to the base, the first coupling portion, and the second coupling portion. And a connecting portion connecting the coupling portion, and a protrusion extending from the first coupling portion, at least a portion of which is disposed on the upper surface of the upper elastic member, wherein the protrusion of the support member is bent inward to the upper surface of the upper elastic member. Can be arranged.

The protrusion of the support member and the upper surface of the upper elastic member may be coupled by soldering.

An upper end of the first coupling part of the support member is disposed above an upper surface of the upper elastic member, and the first coupling part of the support member includes a groove formed in the upper end of the first coupling part, and the protruding portion is It may be formed in the groove.

The first coupling portion of the support member includes a hole formed under the groove, the upper elastic member is an outer portion coupled to the housing, the inner portion coupled to the bobbin, the connecting portion connecting the outer portion and the inner portion And a protrusion extending from the outer portion and disposed in the hole of the first coupling portion of the support member.

The lens driving apparatus may further include a damper disposed in the housing and the support member, and the damper may be disposed in a hole formed in the connection portion of the support member.

The upper elastic member includes first and second upper elastic members spaced apart from each other, one end of the first coil is connected to the first upper elastic member, and the other end of the first coil is the second upper elastic member. The support member is coupled to the first support member coupled to the first upper elastic member, and the second support coupled to the second upper elastic member and disposed opposite the first support member with respect to the housing. And a first support member and the second support member may be electrically connected to the substrate.

The substrate includes a protrusion protruding from a side surface of the substrate, at least a portion of the protrusion of the substrate is disposed below the second coupling portion of the support member, the protrusion of the substrate and the second of the support member. The joint can be joined by soldering.

The support member and the housing and the support member and the base are coupled by an adhesive, and the first coupling portion of the support member includes a plurality of holes formed at positions corresponding to the side surfaces of the housing, and the support member The second coupling portion of the includes a plurality of holes formed in a position corresponding to the side of the base, wherein the adhesive is the plurality of holes of the first coupling portion of the support member and the second coupling portion of the support member The pin-shaped protrusion may be disposed in the plurality of holes and protrude from the first coupling part to the hole of the first coupling part in at least some of the holes of the first coupling part of the support member.

The camera device according to the present embodiment includes a lens driving device; A lens coupled to the bobbin of the lens drive device; And an image sensor disposed below the base at a position corresponding to the lens.

The lens driving apparatus according to the present embodiment includes a housing, a bobbin disposed in the housing, a first coil disposed in the bobbin, a magnet disposed in the housing and facing the first coil, the housing and the bobbin. A mover comprising an elastic member for connecting a; A stator including a base disposed on one side of the mover and a substrate including a second coil facing the magnet; And a support member connecting the mover and the stator, wherein the support member includes a first coupling portion coupled to the mover, a second coupling portion coupled to the stator, and the first coupling portion and the stator. A connecting portion connecting a second coupling portion, and a protrusion extending from the first coupling portion, at least a portion of which is disposed on an upper surface of the elastic member, wherein the protrusion of the support member is bent inward to form an upper surface of the upper elastic member. Can be placed in.

Through this embodiment, a poor soldering process can be reduced to minimize the poor conduction products.

The possibility of occurrence of potential quality issues (cold soldering) according to the structural improvement of this embodiment can be minimized.

1 is a perspective view of a lens driving apparatus according to the present embodiment.
2 is an exploded perspective view of the lens driving apparatus according to the present embodiment.
3 is a cross-sectional view seen from XX of FIG. 1.
4 is a cross-sectional view seen from YY of FIG. 1.
5 is a perspective view of a state in which the cover is removed from the lens driving apparatus according to the present embodiment.
6 is a front view of a state before assembly of the support member of the lens driving apparatus according to the present embodiment.
7 is a front view of the support member of the lens driving apparatus according to the modification.
8 is a perspective view showing a state before assembly of the support member and the upper elastic member of the lens driving apparatus according to the present embodiment.
FIG. 9 is a perspective view of a state where the end of the protrusion is bent to contact the upper elastic member by bending the protrusion of the support member in FIG. 8.
10 is a perspective view illustrating a state in which the protrusion of the support member is fixed to the upper elastic member by soldering in FIG. 9.
11 is an enlarged view of a portion of FIG. 9.

Hereinafter, some embodiments of the present invention will be described through exemplary drawings for the convenience of description. However, the technical idea of the present invention is not limited to some embodiments described.

In addition, in describing the components of the embodiment of the present invention, terms such as first, second, first-first, first-2, A, B, (a), and (b) may be used. These terms are only for distinguishing the components from other components, and the nature, order or order of the components are not limited by the terms.

When a component is described as being 'connected' or 'coupled' to another component, the component may be directly connected or coupled to the other component, but there is another component between the component and the other component. It is to be understood that the elements may be 'connected' or 'coupled'.

'Optical axis direction' used below is defined as the direction of the optical axis of the lens coupled to the lens driving device. Thus, the 'optical axis direction' may coincide with the direction of the optical axis of the image sensor of the camera module.

The Auto Focus function used below automatically adjusts the focus on the subject by adjusting the distance from the image sensor by moving the lens in the direction of the optical axis according to the distance to the subject so that the image sensor can obtain a clear image of the subject. Defined by the matching function. Meanwhile, 'auto focus' may be mixed with 'AF (Auto Focus)'.

The image stabilization function used below is defined as a function of moving or tilting the lens in a direction perpendicular to the optical axis direction so as to cancel vibration (movement) generated in the image sensor by external force. On the other hand, image stabilization may be mixed with optical image stabilization (OIS).

Hereinafter, the configuration of the optical device according to the present embodiment will be described.

Optical devices include mobile phones, mobile phones, smart phones, portable communication devices, portable smart devices, digital cameras, laptop computers, digital broadcasting terminals, personal digital assistants (PDAs), portable multimedia players (PMPs), It may be any one of the navigation. However, the type of the optical device is not limited thereto, and any device for capturing an image or a picture may be included in the optical device.

The optics may comprise a body. The body may form the appearance of the optical device. The body can accommodate a camera device. The display may be disposed on one surface of the main body. For example, the display and the camera device may be disposed on one surface of the main body, and the camera device may be additionally disposed on the other surface of the main body (a surface opposite to the one surface).

Optics may include a display. The display may be disposed on one surface of the main body. The display may output an image captured by the camera device.

The optics may comprise a camera device. The camera device may be disposed in the main body. At least a part of the camera device may be accommodated inside the main body. The camera device may be provided in plurality. The camera device may comprise a dual camera device. The camera device may be disposed on one surface of the body and the other surface of the body. The camera device may capture an image of a subject.

Hereinafter, the configuration of the camera apparatus according to the present embodiment will be described.

The camera device may include a lens module. The lens module may include at least one lens. The lens module may include a barrel and a plurality of lenses coupled to the inside of the barrel. The lens module may be coupled to the bobbin 210 of the lens driving device. The lens module may be coupled to the bobbin 210 by screwing and / or adhesive. The lens module may move integrally with the bobbin 210.

The camera device may comprise a filter. The filter may comprise an infrared filter. The infrared filter may block the light of the infrared region from being incident on the image sensor. An infrared filter may be disposed between the lens and the image sensor. For example, the infrared filter may be disposed on a sensor base (not shown) disposed between the lens driving device and the printed circuit board. As another example, the infrared filter may be disposed on the base 430.

The camera device may include a printed circuit board. The lens driving device may be disposed on the printed circuit board. In this case, a sensor base may be disposed between the printed circuit board and the lens driving apparatus. The printed circuit board may be electrically connected to the lens driving device. An image sensor may be disposed on the printed circuit board. The printed circuit board may be electrically connected to the image sensor.

The camera device may comprise an image sensor. The image sensor may be disposed on the printed circuit board. The image sensor may be electrically connected to the printed circuit board. In one example, the image sensor may be coupled to a printed circuit board by surface mounting technology (SMT). As another example, the image sensor may be coupled to a printed circuit board by flip chip technology. The image sensor may be arranged to coincide with the lens and the optical axis. That is, the optical axis of the image sensor and the optical axis of the lens may be aligned. The image sensor may convert light irradiated to the effective image area of the image sensor into an electrical signal. The image sensor may be any one of a charge coupled device (CCD), a metal oxide semi-conductor (MOS), a CPD, and a CID.

The camera device may include a controller. The controller may be disposed on a printed circuit board. The controller may individually control the direction, intensity and amplitude of the current supplied to the first coil 220 and the second coil 422 of the lens driving apparatus. The controller may control the lens driving device to perform an auto focus function and / or a camera shake correction function. In addition, the controller may perform auto focus feedback control and / or camera shake correction feedback control on the lens driving apparatus.

Hereinafter, the configuration of the lens driving apparatus according to the present embodiment will be described with reference to the drawings.

1 is a perspective view of a lens driving apparatus according to the present embodiment, FIG. 2 is an exploded perspective view of the lens driving apparatus according to the present embodiment, FIG. 3 is a sectional view seen from XX of FIG. 1, and FIG. 4 is YY of FIG. 5 is a perspective view of a state in which the cover is removed from the lens driving apparatus according to the present embodiment, FIG. 6 is a front view of a state before assembly of the support member of the lens driving apparatus according to the present embodiment, and FIG. 8 is a front view of a support member of the lens driving apparatus according to a modification, and FIG. 8 is a perspective view illustrating a state before assembly of the support member and the upper elastic member of the lens driving apparatus according to the present embodiment, and FIG. 9 is a support member of FIG. 8. Is a perspective view of a state in which the end of the protrusion is arranged to be in contact with the upper elastic member by bending the protrusion of FIG. 10, and FIG. 10 illustrates a state in which the protrusion of the supporting member is fixed to the upper elastic member by soldering in FIG. 9. Try and FIG. 11 is an enlarged view of a portion of Fig.

The lens driving apparatus may be a voice coil motor (VCM). The lens driving device may be a lens driving motor. The lens driving device may be a lens driving actuator. The lens driving device may include an AF module. The lens driving device may include an OIS module.

The lens driving device may include a cover 100. The cover 100 may include a 'cover can'. The cover 100 may be disposed outside the housing 310. The cover 100 may be combined with the base 430. The cover 100 may receive the housing 310 therein. The cover 100 may form an appearance of the lens driving apparatus. The cover 100 may have a hexahedron shape with a lower surface opened. The cover 100 may be nonmagnetic material. The cover 100 may be formed of a metal material. The cover 100 may be formed of a metal plate. The cover 100 may be connected to the ground portion of the printed circuit board. Through this, the cover 100 may be grounded. The cover 100 may block electro magnetic interference (EMI). In this case, the cover 100 may be referred to as an 'EMI shield can'.

The cover 100 may include an upper plate 110 and a side plate 120. The cover 100 may include a top plate 110 including a hole 111 and a side plate 120 extending downward from an outer periphery or an edge of the top plate 110. The lower end of the side plate 120 of the cover 100 may be disposed on the stepped portion 434 of the base 430. An inner surface of the side plate 120 of the cover 100 may be fixed to the base 430 by an adhesive.

The upper plate 110 of the cover 100 may include a hole 111. The hole 111 may include an 'opening'. The hole 111 may be formed in the upper plate 110 of the cover 100. When viewed from above, the lens can be seen through the hole 111. The hole 111 may be formed in a size and shape corresponding to the lens. The size of the hole 111 may be larger than the diameter of the lens module so that the lens module can be inserted and assembled through the hole 111. Light introduced through the hole 111 may pass through the lens. In this case, the light passing through the lens is converted into an electrical signal in the image sensor may be obtained as an image.

The lens driving apparatus may include a stator 400 and movable members 200 and 300 movably disposed from the stator 400.

The lens driving device may include a first actuator 200. The first actuator 200 may be combined with the lens. The first mover 200 may be coupled to the second mover 300 through the elastic member 500. The first operator 200 may move through interaction with the second operator 300. In this case, the first actuator 200 may move integrally with the lens. Meanwhile, the first operator 200 may move during the AF driving. In this case, the first mover 200 may be referred to as an 'AF mover'. However, the first operator 200 may move together with the second operator 300 even when the OIS is driven.

The lens driving device may include a bobbin 210. The bobbin 210 may be disposed in the housing 310. The bobbin 210 may be disposed in the hole 311 of the housing 310. The bobbin 210 may be movably coupled to the housing 310. The bobbin 210 may move in the optical axis direction with respect to the housing 310. A lens may be coupled to the bobbin 210. The bobbin 210 and the lens may be coupled by screwing and / or adhesive. The first coil 220 may be coupled to the bobbin 210. The upper elastic member 510 may be coupled to the upper surface of the bobbin 210. The lower elastic member 520 may be coupled to the bottom surface of the bobbin 210. The bobbin 210 may be coupled to the elastic member 500 by heat fusion and / or adhesive. The adhesive for bonding the bobbin 210 and the lens, and the bobbin 210 and the elastic member 500 may be epoxy, which is cured by at least one of ultraviolet (UV), heat, and laser.

The bobbin 210 may include a hole 211. The hole 211 may penetrate the bobbin 210 in the optical axis direction. The lens module may be accommodated in the hole 211. For example, a screw thread corresponding to a screw thread formed on the outer circumferential surface of the lens module may be disposed on the inner circumferential surface of the bobbin 210 forming the hole 211.

The bobbin 210 may include a driving unit coupling unit 212. The first coil 220 may be coupled to the driving unit coupling unit 212. The driving unit coupling unit 212 may be formed on the outer circumferential surface of the bobbin 210. The driving coupler 212 may include a groove formed by recessing a portion of the outer lateral surface of the bobbin 210. The first coil 220 may be accommodated in the groove of the driving unit coupling unit 212. The driving unit coupling unit 212 may include a protrusion supporting the lower surface of the first coil 220.

The bobbin 210 may include a first protrusion 213. The first protrusion 213 may be formed on the upper surface of the bobbin 210. The first protrusion 213 may be coupled to the inner portion 512 of the upper elastic member 510. A hole is formed in the inner portion 512 of the upper elastic member 510, and the first protrusion 213 may be inserted into and coupled to the hole of the inner portion 512 of the upper elastic member 510. The first protrusion 213 may be heat-sealed to fix the upper elastic member 510. Alternatively, an adhesive may be applied to the first protrusion 213 and the upper elastic member 510.

The bobbin 210 may include a second protrusion 214. The second protrusion 214 may be formed on the upper surface of the bobbin 210. The second protrusion 214 may be formed to be spaced apart from the first protrusion 213. The second protrusion 214 may extend from the inner circumferential surface of the bobbin 210.

The bobbin 210 may include a third protrusion 215. The third protrusion 215 may be formed on the upper surface of the bobbin 210. The third protrusion 215 may be spaced apart from the first protrusion 213 and the second protrusion 214. The upper end of the third protrusion 215 may be disposed higher than the upper end of the first protrusion 213 and the upper end of the second protrusion 214. Through this, the third protrusion 215 may function as a mechanical stopper for moving upward of the bobbin 210. In addition, the third protrusion 215 may be disposed in a groove of a corresponding shape of the housing 310. As a result, when the bobbin 210 rotates, the third protrusion 215 may be caught by the housing 310 to prevent rotation of the bobbin 210.

The lens driving apparatus may include a first coil 220. The first coil 220 may be an 'AF driving coil' used for AF driving. The first coil 220 may be disposed on the bobbin 210. The first coil 220 may be disposed between the bobbin 210 and the housing 310. The first coil 220 may be disposed on an outer lateral surface or an outer peripheral surface of the bobbin 210. The first coil 220 may be wound on the bobbin 210. Alternatively, the first coil 220 may be coupled to the bobbin 210 in a wound state. The first coil 220 may face the magnet 320. The first coil 220 may be disposed to face the magnet 320. The first coil 220 may electromagnetically interact with the magnet 320. In this case, when a current is supplied to the first coil 220 and an electromagnetic field is formed around the first coil 220, the first coil 220 may be formed by electromagnetic interaction between the first coil 220 and the magnet 320. 220 may move relative to magnet 320. The first coil 220 may be formed of a single coil. Alternatively, the first coil 220 may include a plurality of coils spaced apart from each other.

The first coil 220 may include a pair of lead wires for power supply. At this time, one end (leader line) of the first coil 220 is coupled to the first upper elastic member 510-1 and the other end (leader line) of the first coil 220 is the second upper elastic member 510. -2). That is, the first coil 220 may be electrically connected to the upper elastic member 510. In more detail, the first coil 220 may be sequentially supplied with power through the printed circuit board, the substrate 410, the support member 600, and the upper elastic member 510. As a variant, the first coil 220 may be electrically connected to the lower elastic member 520.

The lens driving device may include a second actuator 300. The second mover 300 may be coupled to the stator 400 so as to be movable through the support member 600. The second movable member 300 may support the first movable member 200 through the elastic member 500. The second mover 300 may move the first mover 200 or move together with the first mover 200. The second mover 300 may move through interaction with the stator 400. The second operator 300 may move when the OIS is driven. In this case, the second mover 300 may be referred to as an 'OIS mover'. The second operator 300 may move integrally with the first operator 200 when the OIS is driven.

The lens driving device may include a housing 310. The housing 310 may be disposed outside the bobbin 210. The housing 310 may receive at least a portion of the bobbin 210. The housing 310 may be disposed in the cover 100. The housing 310 may be disposed between the cover 100 and the bobbin 210. The housing 310 may be formed of a material different from that of the cover 100. The housing 310 may be formed of an insulating material. The housing 310 may be formed of an injection molding. The outer side surface of the housing 310 may be spaced apart from the inner surface of the side plate 120 of the cover 100. The housing 310 may move for driving the OIS through the spaced space between the housing 310 and the cover 100. The magnet 320 may be disposed in the housing 310. The housing 310 and the magnet 320 may be joined by an adhesive. An upper elastic member 510 may be coupled to an upper surface of the housing 310. The lower elastic member 520 may be coupled to the lower surface of the housing 310. The housing 310 may be coupled to the elastic member 500 by heat fusion and / or adhesive. The adhesive bonding the housing 310 and the magnet 320 and the housing 310 and the elastic member 500 may be an epoxy that is cured by at least one of ultraviolet (UV), heat, and laser.

The housing 310 may include four side portions 310a and four corner portions 310b disposed between the four side portions 310a. The side portion 310a of the housing 310 includes a first side portion, a second side portion disposed opposite the first side portion, and a third side portion and a fourth side portion disposed opposite to each other between the first side portion and the second side portion. It may include. The corner portion 310b of the housing 310 includes a first corner portion disposed between the first side portion and the third side portion, a second corner portion disposed between the first side portion and the fourth side portion, and a second side portion and the first corner portion. It may include a third corner portion disposed between the three side portion, and a fourth corner portion disposed between the second side portion and the fourth side portion. The side portion 310a of the housing 310 may include a 'lateral wall'.

The housing 310 may include a hole 311. The hole 311 may be formed in the housing 310. The hole 311 may be formed to penetrate the housing 310 in the optical axis direction. The bobbin 210 may be disposed in the hole 311. The hole 311 may be formed in a shape corresponding to the bobbin 210 at least in part. An inner peripheral surface or an inner lateral surface of the housing 310 forming the hole 311 may be spaced apart from the outer peripheral surface of the bobbin 210. However, at least a portion of the housing 310 and the bobbin 210 may overlap in the optical axis direction to limit the movement stroke distance of the bobbin 210 in the optical axis direction.

The housing 310 may include a driving unit coupling part 312. The magnet 320 may be coupled to the driving unit coupling unit 312. The driving unit coupling part 312 may include a groove formed by recessing a portion of the inner circumferential surface and / or the lower surface of the housing 310. The driving unit coupling part 312 may be formed at each of the four corner parts 310b of the housing 310. As a variant, the drive coupler 312 may be formed on each of the four sides 310a of the housing 310.

The housing 310 may include a first protrusion 313. The first protrusion 313 may have a housing 310 formed on an upper surface thereof. The first protrusion 313 may be coupled to the outer portion 511 of the upper elastic member 510. A hole is formed in the outer portion 511 of the upper elastic member 510, and the first protrusion 313 may be inserted into and coupled to the hole of the outer portion 511 of the upper elastic member 510. The first protrusion 313 may be heat-sealed to fix the upper elastic member 510. Alternatively, an adhesive may be applied to the first protrusion 313 and the upper elastic member 510.

The housing 310 may include a second protrusion 314. The second protrusion 314 may be formed on the upper surface of the housing 310. The second protrusion 314 may be formed to be spaced apart from the first protrusion 313. The second protrusion 314 may extend from an outer circumferential surface of the housing 310.

The housing 310 may include a third protrusion 315. The third protrusion 315 may be formed on the upper surface of the housing 310. The third protrusion 315 may be spaced apart from the first protrusion 313 and the second protrusion 314. The upper end of the third protrusion 315 may be disposed higher than the upper end of the first protrusion 313 and the upper end of the second protrusion 314. Through this, the third protrusion 315 may function as a mechanical stopper for the movement upward of the housing 310. The housing 310 is not configured to move during AF driving, but may move upward due to an external impact.

The lens driving device may include a magnet 320. The magnet 320 may be disposed in the housing 310. The magnet 320 may be fixed to the housing 310 by an adhesive. The magnet 320 may be disposed between the bobbin 210 and the housing 310. The magnet 320 may face the first coil 220. The magnet 320 may electromagnetically interact with the first coil 220. The magnet 320 may face the second coil 422. The magnet 320 may electromagnetically interact with the second coil 422. The magnet 320 may be used in common for AF driving and OIS driving. The magnet 320 may be disposed at the corner of the housing 310. At this time, the magnet 320 may be a corner magnet having an hexahedral shape of the inner side is wider than the outer side. As a variant, the magnet 320 may be disposed on the side portion 310a of the housing 310. In this case, the magnet 320 may be a flat plate magnet having a flat plate shape.

The lens driving apparatus may include a stator 400. The stator 400 may be disposed below the movers 200 and 300. The stator 400 may movably support the second mover 300. The stator 400 may move the second mover 300. In this case, the first operator 200 may also move together with the second operator 300.

The lens driving apparatus may include a substrate 410. The substrate 410 may include a circuit member 420. However, the substrate 410 may be described as a member separate from the circuit member 420. The substrate 410 may include a second coil 422 facing the magnet 320. The substrate 410 may be disposed on the base 430. The substrate 410 may be disposed between the housing 310 and the base 430. The support member 600 may be coupled to the substrate 410. The substrate 410 may supply power to the second coil 422. The substrate 410 may be combined with the circuit member 420. The substrate 410 may be combined with the second coil 422. The substrate 410 may be combined with a printed circuit board disposed under the base 430. The substrate 410 may include a flexible printed circuit board (FPCB). The substrate 410 may be bent in some.

The substrate 410 may include a body portion 411. The substrate 410 may include a hole 411a formed in the body portion 411. The substrate 410 may include a hole 411a corresponding to the lens coupled to the bobbin 210.

The substrate 410 may include a terminal portion 412. The terminal portion 412 may extend downward from the body portion 411 of the substrate 410. The terminal portion 412 may be formed by bending a portion of the substrate 410. At least a portion of the terminal portion 412 may be exposed to the outside. The terminal unit 412 may be coupled to the printed circuit board disposed under the base 430 by soldering. The terminal part 412 may be disposed in the terminal accommodating part 433 of the base 430. The terminal unit 412 may include a plurality of terminals.

The substrate 410 may include a protrusion 413. The protrusion 413 may protrude from the side of the substrate 410. At least a portion of the protrusion 413 of the substrate 410 may be disposed under the second coupling part 620 of the support member 600. The protrusion 413 of the substrate 410 and the second coupling part 620 of the support member 600 may be coupled by soldering.

The lens driving device may include a circuit member 420. The circuit member 420 may be disposed on the base 430. The circuit member 420 may be disposed on the substrate 410. The circuit member 420 may be disposed between the magnet 320 and the base 430. Here, although the circuit member 420 is described in a separate configuration from the substrate 410, the circuit member 420 may be understood as a configuration included in the substrate 410.

The circuit member 420 may include a substrate portion 421. The substrate portion 421 may include a substrate. The substrate portion 421 may be an FPCB. The second coil 422 may be integrally formed on the substrate 421 as a fine pattern coil (FP coil). The substrate portion 421 may include a hole 421a. The hole 421a of the substrate 421 may be disposed to correspond to the hole 411a of the substrate 410.

The circuit member 420 may include a second coil 422. The second coil 422 may face the magnet 320. The second coil 422 may interact with the magnet 320 electromagnetically. In this case, when a current is supplied to the second coil 422 and a magnetic field is formed around the second coil 422, the magnet 320 is caused by electromagnetic interaction between the second coil 422 and the magnet 320. May move relative to the second coil 422. The second coil 422 may move the housing 310 and the bobbin 210 in a direction perpendicular to the optical axis with respect to the base 430 through electromagnetic interaction with the magnet 320. The second coil 422 may be a fine pattern coil (FP coil) formed integrally with the substrate 421.

The lens driving apparatus may include a base 430. The base 430 may be disposed below the housing 310. The base 430 may be disposed below the substrate 410. The substrate 410 may be disposed on the top surface of the base 430. The base 430 may be combined with the cover 100. The base 430 may be disposed on the printed circuit board.

The base 430 may include a hole 431. The hole 431 may be formed in the base 430. The hole 431 may be formed to penetrate the base 430 in the optical axis direction. Light passing through the lens module through the hole 431 may be incident to the image sensor. That is, the light passing through the lens module may be incident to the image sensor through the hole 421a of the circuit member 420, the hole 411a of the substrate 410, and the hole 431 of the base 430.

The base 430 may include a sensor coupling part 432. The sensor 700 may be disposed at the sensor coupler 432. The sensor coupler 432 may receive at least a portion of the sensor 700. The sensor coupling part 432 may include a groove formed by recessing an upper surface of the base 430. The sensor coupling part 432 may include two grooves. At this time, the sensor 700 is disposed in each of the two grooves to detect the X-axis movement and the Y-axis movement of the magnet 320.

The base 430 may include a terminal receiving portion 433. The terminal portion 412 of the substrate 410 may be disposed in the terminal accommodating portion 433. The terminal accommodating part 433 may include a groove formed by recessing a portion of the side surface of the base 430. The width of the terminal accommodating part 433 may be formed to correspond to the width of the terminal part 412 of the substrate 410. The length of the terminal accommodating part 433 may be formed to correspond to the length of the terminal part 412 of the substrate 410. Alternatively, since the length of the terminal portion 412 of the substrate 410 is longer than the length of the terminal accommodating portion 433, a portion of the terminal portion 412 may protrude below the base 430.

The base 430 may include a step 434. The stepped portion 434 may be formed on the side of the base 430. The stepped portion 434 may be formed around the outer circumferential surface of the base 430. The stepped portion 434 may be formed by protruding or recessing a portion of the side surface of the base 430. The lower end of the side plate 120 of the cover 100 may be disposed on the stepped portion 434.

The lens driving device may include an elastic member 500. The elastic member 500 may be coupled to the bobbin 210 and the housing 310. The elastic member 500 may elastically support the bobbin 210. The elastic member 500 may have elasticity at least in part. The elastic member 500 may support the bobbin 210 to be movable. The elastic member 500 may support the movement of the bobbin 210 during the AF driving. In this case, the elastic member 500 may be referred to as an 'AF support member'.

The elastic member 500 may include an upper elastic member 510. The upper elastic member 510 may be coupled to the upper portion of the bobbin 210 and the upper portion of the housing 310. The upper elastic member 510 may be coupled to the upper surface of the bobbin 210. The upper elastic member 510 may be coupled to the upper surface of the housing 310. The upper elastic member 510 may be combined with the support member 600. The upper elastic member 510 may be formed of a leaf spring.

The upper elastic member 510 may include a first upper elastic member 510-1 and a second upper elastic member 510-2 spaced apart from each other. The first upper elastic member 510-1 and the second upper elastic member 510-2 may be formed in a shape corresponding to each other. The first upper elastic member 510-1 and the second upper elastic member 510-2 may be symmetrically disposed with respect to the optical axis. The first upper elastic member 510-1 and the second upper elastic member 510-2 may be coupled to the first coil 220, respectively. Through this, the first upper elastic member 510-1 and the second upper elastic member 510-2 may be used as conductive lines of the first coil 220.

The upper elastic member 510 may include an outer portion 511. The outer portion 511 may be coupled to the housing 310. The outer portion 511 may be coupled to an upper surface of the housing 310. The outer portion 511 may include a hole or a groove coupled to the protrusion of the housing 310. The outer portion 511 may be fixed to the housing 310 by an adhesive.

The upper elastic member 510 may include an inner portion 512. The inner portion 512 may be coupled to the bobbin 210. The inner part 512 may be coupled to the upper surface of the bobbin 210. The inner portion 512 may include a hole or a groove coupled to the protrusion of the bobbin 210. The inner portion 512 may be fixed to the bobbin 210 by an adhesive.

The upper elastic member 510 may include a connecting portion 513. The connection part 513 may connect the outer part 511 and the inner part 512. The connection part 513 may have elasticity. In this case, the connecting portion 513 may be referred to as an 'elastic portion'. The connection part 513 may be formed by bending two or more times.

The upper elastic member 510 may include a protrusion 514. The protrusion 514 may extend from the outer portion 511. The protrusion 514 may be disposed in the hole 612 of the first coupling part 610 of the support member 600. The protrusion 514 may be formed to penetrate the support member 600. The width of the protrusion 514 may be equal to or smaller than the width of the hole 612 of the first coupling portion 610 in the corresponding direction.

The upper elastic member 510 may include a coupling part 515. The coupling portion 515 may extend from the inner portion 512. The coupling part 515 may be coupled to the first coil 220. The coupling part 515 and the first coil 220 may be coupled by soldering.

The elastic member 500 may include a lower elastic member 520. The lower elastic member 520 may be coupled to the lower portion of the bobbin 210 and the lower portion of the housing 310. The lower elastic member 520 may be disposed below the bobbin 210. The lower elastic member 520 may be coupled to the lower surface of the bobbin 210. The lower elastic member 520 may be coupled to the lower surface of the housing 310. The lower elastic member 520 may be formed of a leaf spring. The lower elastic member 520 may be integrally formed.

The lower elastic member 520 may include an outer portion 521. The outer portion 521 may be coupled to the housing 310. The outer portion 521 may be coupled to the bottom surface of the housing 310. The outer portion 521 may include a hole or a groove coupled to the protrusion of the housing 310. The outer portion 521 may be fixed to the housing 310 by an adhesive.

The lower elastic member 520 may include an inner portion 522. The inner portion 522 may be coupled to the bobbin 210. The inner part 522 may be coupled to the bottom surface of the bobbin 210. The inner portion 522 may include a hole or a groove coupled to the protrusion of the bobbin 210. The inner portion 522 may be fixed to the bobbin 210 by an adhesive.

The lower elastic member 520 may include a connection part 523. The connection part 523 may connect the outer part 521 and the inner part 522. The connection part 523 may elastically connect the outer part 521 and the inner part 522. The connection part 523 may have elasticity. In this case, the connection part 523 may be referred to as an 'elastic part'. The connection part 523 may be bent two or more times.

The lens driving device may include a support member 600. The support member 600 may support the housing 310 to be movable. The support member 600 may elastically support the housing 310. The support member 600 may have elasticity at least in part. The support member 600 may support the movement of the housing 310 and the bobbin 210 when the OIS is driven. In this case, the support member 600 may be referred to as an 'OIS support member'. The support member 600 may include an elastic member. The support member 600 may be a leaf spring. In a variant, the support member 600 may include a wire. The support member 600 may be coupled to the housing 310 and the base 430. The support member 600, the housing 310, and the support member 600 and the base 430 may be coupled by an adhesive. The support member 600 may be fixed to the housing 310 by an adhesive. The support member 600 may be fixed to the base 430 by an adhesive. In this embodiment, an etching spring may be assembled to the side to connect the AF assembly and the base assembly. In this case, the AF assembly may include the movers 200 and 300 and the base assembly may include the stator 400. The lower portion of the support member 600 may be soldered with the terminals of the second coil 422 to be electrically connected to drive the AF and the OIS. The upper portion of the support member 600 may be soldered to the upper elastic member 510 and electrically connected to the AF driving unit.

The support member 600 may include a plurality of support members. The support member 600 may include four support members. Four support members may be disposed on four sides of the housing 310, respectively. The support member 600 may include first to fourth support members 601, 602, 603, and 604. The first support member 601 and the second support member 602 may be disposed opposite to each other. The third support member 603 and the fourth support member 604 may be disposed opposite to each other between the first support member 601 and the second support member 602. The support member 600 is combined with the first upper elastic member 510-1 and the second upper elastic member 510-2, and is based on the housing 310. It may include a second support member 602 disposed opposite the support member 601. In this case, the first support member 601 and the second support member 602 may be electrically connected to the substrate 410.

In this embodiment, the first support member 601 and the second support member 602 are combined with the upper elastic member 510 and the third support member 603 and the fourth support member 604 are the upper elastic member 510. ) May not be combined. However, all of the first to fourth supporting members 601, 602, 603, and 604 may be manufactured in the same shape for convenience of manufacturing. Alternatively, as a modification, the first support member 601 and the second support member 602 may be formed of the support member 600 of FIG. 6 including the protrusion 640 and the third support member 603 and the fourth support member. The member 604 may be formed of the supporting member 600a of FIG. 7 in which the protrusion 640 is omitted.

The support member 600 may include a first coupling part 610. The first coupling part 610 may be coupled to the housing 310. The first coupling part 610 may be coupled to the upper elastic member 510. An upper end of the first coupling part 610 of the support member 600 may be disposed above the upper surface of the upper elastic member 510. The first coupling part 610 of the support member 600 may include a groove 611 formed in the upper end of the first coupling part 610. In this case, the protrusion 640 may be formed in the groove 611 of the first coupling portion 610. The first coupling part 610 of the support member 600 may include a hole 612 formed under the groove 611. The protrusion 514 of the upper elastic member 510 may be inserted into the groove 611 of the first coupling part 610. By the coupling structure of the hole 612 of the first coupling portion 610 and the protrusion 514 of the upper elastic member 510 it is easier to conduct electricity connection of the first coupling portion 610 and the upper elastic member 510. Can be. Meanwhile, soldering may be performed in the shape structure. The plate portion between the groove 611 and the hole 612 of the first coupling portion 610 may prevent the solder ball 800 is lost to the outside. The first coupling part 610 may include a plurality of holes 613 formed at positions corresponding to the side surfaces of the housing 310. The adhesive may be disposed in the plurality of holes 613 of the first coupling part 610. Pin-shaped protrusions 614 protruding from the first coupling part 610 into the holes 613 of the first coupling part 610 are disposed in at least some of the holes 613 of the first coupling part 610. Can be. In this case, the adhesive may be eliminated from the support member 600 by the protrusion 614 disposed in the hole 613 of the first coupling part 610.

The support member 600 may include a second coupling part 620. The second coupling part 620 may be coupled to the base 430. The second coupling part 620 may include a plurality of holes 621 formed at positions corresponding to the side surfaces of the base 430. The adhesive may be disposed in the plurality of holes 621 of the second coupling part 620.

The support member 600 may include a connection part 630. The connection part 630 may connect the first coupling part 610 and the second coupling part 620. The connection part 630 may include a hole 631. The damper connecting the housing 310 and the support member 600 may be disposed in the hole 631 of the connector 630. The connection part 630 may be formed by bending a plurality of times. The connection part 630 may have elasticity.

The support member 600 may include a protrusion 640. The protrusion 640 may extend from the first coupling part 610. The protrusion 640 of the support member 600 may be bent inward and disposed on the upper surface of the upper elastic member 510. The protruding portion 640 of the supporting member 600 may be bent inward to contact the upper surface of the upper elastic member 510. At least a portion of the protrusion 640 may be disposed on an upper surface of the upper elastic member 510. In this embodiment, the protrusion 640 of the support member 600 and the upper surface of the upper elastic member 510 may be coupled by soldering. In this embodiment, the protrusion 640 may provide a sure energization structure between the support member 600 and the upper elastic member 510. The protruding portion 640 may prevent the solder ball 800 from riding up the plate portion between the groove 611 and the hole 612 of the first coupling portion 610.

In this embodiment, it is possible to minimize the intermittent cold soldering phenomenon between the support member 600 and the upper elastic member 510 which may occur when the protrusion 640 is not present.

The protruding portion 640 may include a first portion 641 extending upward from the first coupling portion 610, a second portion 642 extending from the first portion 641, and a second portion 642 extending from the second portion 642. A third portion 643 extending straight, a fourth portion 644 bent and extending from the third portion 643, and an outer portion 511 of the upper elastic member 510 extending from the fourth portion 644. And a fifth portion 645 in contact with the. The first portion 641 may extend in the vertical direction. The second portion 642 may be bent roundly. The third portion 643 may be disposed to be inclined with the first portion 641. The third portion 643 may extend from the end of the second portion 642 toward the outer portion 511 of the upper elastic member 510. The third portion 643 may be formed of a flat plate. The fourth portion 644 may be bent roundly. The fifth portion 645 may be in surface contact with the outer portion 511 of the upper elastic member 510. Meanwhile, at least a portion of the fourth portion 644 may also contact the outer portion 511 of the upper elastic member 510.

The solder ball 800 connecting the protrusion 640 and the outer portion 511 of the upper elastic member 510 may be any one of the first to fifth portions 641, 642, 643, 644, and 645 of the protrusion 640. It can be connected to the above. In addition, the solder balls 800 may be connected to the third to fifth portions 643, 644, and 645.

As a variation, the protrusion 640 may be formed in a rounded shape without including the third portion 643 of the plate shape. That is, the protrusion 640 may include an inverted U shape.

The lens driving device may include a sensor 700. Sensor 700 may be used for OIS feedback control. In this case, the sensor 700 may be referred to as an 'OIS feedback driving sensor'. The sensor 700 may be disposed between the base 430 and the substrate 410. The sensor 700 may detect the movement of the second operator 300. The sensor 700 may include a hall sensor. In this case, the hall sensor may sense the magnetic force of the magnet 320 to detect the movement of the housing 310 and the magnet 320. The sensed value detected by the sensor 700 can be used for OIS feedback control.

The lens driving device may include a solder ball 800. The solder ball 800 may be electrically connected to two or more members when heated by a soldering machine as a material for soldering, and may provide a fixing force to two or more connected members when the heat cools. In this embodiment, the solder ball 800 may be used to connect the upper elastic member 510 and the first coil 220. The solder ball 800 may be disposed at the coupling part 515 of the upper elastic member 510. In addition, the solder ball 800 may be used to connect the upper surface of the upper elastic member 510 and the protrusion 640 of the support member 600. The solder ball 800 may be disposed on the upper surface of the upper elastic member 510 and the protrusion 640 of the support member 600. Although not shown, the solder ball 800 may be used for connecting the support member 600 and the substrate 410 and for connecting the terminal of the substrate 410 and the printed circuit board. However, the solder ball 800 may be replaced with a conductive member such as Ag epoxy.

The lens driving device may include a damper. The damper may be disposed in the housing 310 and the support member 600. The damper may be disposed in the hole 631 formed in the connection portion 630 of the support member 600. The damper may be disposed on the elastic member 500. The damper may be disposed on the elastic member 500 and the bobbin 210 and / or the elastic member 500 and the housing 310. The damper may be disposed on the elastic member 500 and / or the support member 600 to prevent a resonance phenomenon generated in the elastic member 500 and / or the support member 600. The damper may comprise a viscous material. The damper may comprise an adhesive material. The damper may comprise an epoxy.

Hereinafter, the operation of the camera apparatus according to the present embodiment will be described.

The autofocus function of the camera apparatus according to the present embodiment will be described. When power is supplied to the first coil 220, the first coil 220 moves with respect to the magnet 320 by electromagnetic interaction between the first coil 220 and the magnet 320. At this time, the bobbin 210 to which the first coil 220 is coupled is moved integrally with the first coil 220. That is, the bobbin 210 to which the lens module is coupled is moved in the optical axis direction with respect to the housing 310. Since the movement of the bobbin 210 results in the lens module moving closer to or farther from the image sensor, in this embodiment, the first coil 220 is supplied with power to perform focus adjustment on the subject. You can do it. Meanwhile, the aforementioned focus adjustment may be automatically performed according to the distance of the subject.

The camera shake correction function of the camera apparatus according to the present embodiment will be described. When power is supplied to the second coil 422, the magnet 320 moves with respect to the second coil 422 by electromagnetic interaction between the second coil 422 and the magnet 320. In this case, the housing 310 to which the magnet 320 is coupled is moved integrally with the magnet 320. That is, the housing 310 moves in the horizontal direction (the direction perpendicular to the optical axis) with respect to the base 430. However, in this case, the tilt of the housing 310 may be induced with respect to the base 430. Meanwhile, the bobbin 210 is integrally moved with the housing 310 with respect to the horizontal movement of the housing 310. Thus, such movement of the housing 310 results in the lens module coupled to the bobbin 210 relative to the image sensor moving in a direction parallel to the direction in which the image sensor is placed. That is, in this embodiment, the power supply is supplied to the second coil 422 to perform the hand shake correction function.

In the camera apparatus according to the present embodiment, the camera shake correction feedback control may be performed to more accurately realize the camera shake correction function. The sensor 700 disposed on the base 430 senses a magnetic field of the magnet 320 disposed on the housing 310. Therefore, when the housing 310 moves relative to the base 430, the amount of magnetic field detected by the sensor 700 changes. The pair of sensors 700 detects the movement amount or position of the housing 310 in the horizontal direction (x-axis and y-axis directions) and transmits the detected value to the controller. The controller determines whether to perform further movement with respect to the housing 310 based on the received detection value. Since such a process is generated in real time, the camera shake correction function of the camera apparatus according to the present exemplary embodiment may be more precisely performed through the camera shake correction feedback control.

In the above description, all elements constituting the embodiments of the present invention are described as being combined or operating in combination, but the present invention is not necessarily limited to the embodiments. In other words, within the scope of the present invention, all of the components may be selectively operated in combination with one or more. In addition, the terms such as 'comprise', 'comprise' or 'having' described above mean that the corresponding component may be inherent unless specifically stated otherwise, and thus excludes other components. It should be construed that it may further include other components instead. All terms, including technical and scientific terms, have the same meaning as commonly understood by one of ordinary skill in the art unless otherwise defined. Terms used generally, such as terms defined in a dictionary, should be interpreted to coincide with the contextual meaning of the related art, and shall not be interpreted in an ideal or excessively formal sense unless explicitly defined in the present invention.

The above description is merely illustrative of the technical idea of the present invention, and those skilled in the art to which the present invention pertains may make various modifications and changes without departing from the essential characteristics of the present invention. Therefore, the embodiments disclosed in the present invention are not intended to limit the technical idea of the present invention but to describe the present invention, and the scope of the technical idea of the present invention is not limited by these embodiments. The protection scope of the present invention should be interpreted by the following claims, and all technical ideas within the scope equivalent thereto should be construed as being included in the scope of the present invention.

100: cover 200: first mover
300: second mover 400: stator
500: elastic member 600: support member
700: sensor 800: solder ball

Claims (10)

housing;
A bobbin disposed within the housing;
A first coil disposed on the bobbin;
A magnet disposed in the housing and facing the first coil;
A base disposed below the housing;
A substrate including a second coil facing the magnet and disposed on the base;
An upper elastic member coupled to an upper portion of the housing and an upper portion of the bobbin; And
A support member coupled to the housing and the base,
The support member includes a first coupling portion coupled to the housing, a second coupling portion coupled to the base, a connecting portion connecting the first coupling portion and the second coupling portion, and extending from the first coupling portion. At least a part includes a protrusion disposed on an upper surface of the upper elastic member,
The protrusion of the support member is bent inward to the lens driving device disposed on the upper surface of the upper elastic member. The method of claim 1,
The protrusion of the support member and the upper surface of the upper elastic member is coupled to the lens driving device by soldering. The method of claim 1,
The upper end of the first coupling portion of the support member is disposed above the upper surface of the upper elastic member,
The first coupling portion of the support member includes a groove formed in the upper end of the first coupling portion,
The protrusion is formed in the groove. The method of claim 3,
The first coupling portion of the support member includes a hole formed under the groove,
The upper elastic member includes an outer portion coupled to the housing, an inner portion coupled to the bobbin, a connecting portion connecting the outer portion and the inner portion, and extending from the outer portion and disposed in the hole of the first coupling portion of the support member. Lens driving device comprising a projection. The method of claim 1,
The lens driving device further includes a damper disposed in the housing and the support member.
The damper is disposed in the hole formed in the connecting portion of the support member. The method of claim 1,
The upper elastic member includes a first and second upper elastic member spaced apart from each other,
One end of the first coil is connected to the first upper elastic member, and the other end of the first coil is connected to the second upper elastic member,
The support member includes a first support member coupled to the first upper elastic member, and a second support member coupled to the second upper elastic member and disposed opposite the first support member based on the housing. ,
And the first support member and the second support member are electrically connected to the substrate. The method of claim 6,
The substrate includes a protrusion protruding from the side of the substrate,
At least a portion of the protrusion of the substrate is disposed below the second coupling portion of the support member,
And the second coupling portion of the protrusion and the support member of the substrate are coupled by soldering. The method of claim 1,
The support member and the housing and the support member and the base are joined by an adhesive,
The first coupling portion of the support member includes a plurality of holes formed in a position corresponding to the side of the housing,
The second coupling portion of the support member includes a plurality of holes formed at a position corresponding to the side of the base,
The adhesive is disposed in the plurality of holes of the first coupling portion of the support member and the plurality of holes of the second coupling portion of the support member,
And at least a portion of the plurality of holes of the first coupling part of the support member, wherein a pin-shaped protrusion protruding from the first coupling part to the hole of the first coupling part is disposed. The lens driving device of claim 1;
A lens coupled to the bobbin of the lens drive device; And
And an image sensor disposed below the base at a position corresponding to the lens. A movable body including a housing, a bobbin disposed in the housing, a first coil disposed on the bobbin, a magnet disposed on the housing and facing the first coil, and an elastic member connecting the housing and the bobbin. character;
A stator including a base disposed on one side of the mover and a substrate including a second coil facing the magnet; And
It includes a support member for connecting the mover and the stator,
The support member includes a first coupling portion coupled to the mover, a second coupling portion coupled to the stator, a connecting portion connecting the first coupling portion and the second coupling portion, and extending from the first coupling portion. At least a portion of which includes a protrusion disposed on an upper surface of the elastic member,
The protrusion of the support member is bent inward to the lens driving device disposed on the upper surface of the elastic member.

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