KR20210133935A - Lens driving device and camera module - Google Patents

Abstract

According to an embodiment of the present invention, a lens driving device comprises: a housing; a bobbin disposed in the housing; a first coil disposed in the bobbin; a magnet disposed in the housing; and a first substrate including a second coil facing the magnet. The housing includes first and second side units facing each other, and third and fourth side units facing each other. The magnet includes a first magnet unit disposed on the first side unit of the housing, a second magnet unit disposed on the third side unit of the housing, and a third magnet unit disposed on the fourth side unit of the housing. The first coil includes a plurality of coil units, wherein the coil units include a first coil unit facing the second magnet unit and a second coil unit facing the third magnet unit. The coil unit is not disposed between the bobbin and the first magnet unit. Therefore, interactive interference between magnets can be minimized.

Description

Lens driving device and camera module

This embodiment relates to a lens driving device and a camera module.

The content described below provides background information for the present embodiment and does not describe the prior art.

As various types of portable terminals are widely distributed and wireless Internet services are commercialized, the needs of consumers related to portable terminals are also diversifying, so that various types of additional devices are being installed in portable terminals.

Among them, there is a camera module that takes a picture or video of a subject as a representative one. Meanwhile, recently, a dual camera module in which two camera modules are arranged side by side has been studied.

However, in the conventional dual camera module, there is a problem in that the distance between the camera modules is narrow and magnetic field interference occurs.

The present embodiment intends to provide a structure capable of excluding mutual interference between magnets in the structure of a lens driving device for dual OIS.

The lens driving device according to the present embodiment includes a housing; a bobbin disposed in the housing; a first coil disposed on the bobbin; a magnet disposed on the housing; and a first substrate including a second coil facing the magnet, wherein the housing includes first side and second side facing each other, and third side and fourth side facing each other, and the magnet includes a first magnet unit disposed on a first side of the housing, a second magnet unit disposed on a third side of the housing, and a third magnet unit disposed on a fourth side of the housing, One coil includes a plurality of coil units, wherein the plurality of coil units includes a first coil unit facing the second magnet unit and a second coil unit facing the third magnet unit, the bobbin and The coil unit may not be disposed between the first magnet units.

The lens driving device according to the present embodiment includes a housing; a bobbin disposed in the housing; a magnet and a dummy member disposed in the housing; a first coil disposed on the bobbin; and a substrate including a second coil facing the magnet, wherein the housing includes first and second sides facing each other, and third and fourth sides facing each other, wherein the magnet includes the a first magnet unit disposed on a first side portion, a second magnet unit disposed on the third side portion, and a third magnet unit disposed on the fourth side portion, wherein the dummy member is disposed on the second side portion can

The lens driving device according to the present embodiment includes a housing; a bobbin disposed in the housing; a magnet disposed on the housing; a first coil disposed on the bobbin; and a substrate including a second coil facing the magnet, wherein the housing includes first and second sides facing each other, and third and fourth sides facing each other, wherein the magnet includes the A first magnet unit disposed on the first side, a second magnet unit disposed on the third side, and a third magnet unit disposed on the fourth side, wherein the first magnet unit is a two-pole magnet, The second magnet unit and the third magnet unit may be 4-pole magnets.

The first coil may include a plurality of coil units, and the plurality of coil units may include a first coil unit facing the second magnet unit and a second coil unit facing the third magnet unit.

The coil unit may not be disposed between the bobbin and the first magnet unit.

The coil unit may not be disposed between the bobbin and the dummy member.

The first magnet unit may be a two-pole magnet, and the second magnet unit and the third magnet unit may be a four-pole magnet.

and a dummy member disposed on the second side of the housing.

The second coil may not be disposed between the dummy member and the substrate.

The dummy member may include a non-magnetic material.

The first coil further includes a connecting portion connecting the first coil unit and the second coil unit, and the connecting portion of the first coil is disposed between the first magnet unit and the bobbin or the dummy member and the bobbin can be placed between them.

The substrate may include a hole, and the hole of the substrate may be formed closer to one side of the substrate.

The one side of the substrate may be adjacent to the dummy member.

The shortest distance from the other side opposite to the one side of the substrate to the hole may be greater than the shortest distance from the one side to the hole.

The first coil includes a first coil unit horizontally opposed to the second magnet unit, and a second coil unit horizontally opposed to the third magnet unit, wherein the second coil includes the first coil unit. A third coil unit facing the magnet unit in the vertical direction, a fourth coil unit facing the second magnet unit in the vertical direction, and a fifth coil unit facing the third magnet unit in the vertical direction. can do.

The first coil unit and the second coil unit have an elliptical shape. It may have at least one shape among a track shape and a closed curve shape.

The second magnet unit and the third magnet unit move the bobbin in the optical axis direction, and the first magnet unit, the second magnet unit and the third magnet unit move the housing in a direction perpendicular to the optical axis direction. can do.

The bobbin includes a first protrusion and a second protrusion disposed opposite to the first protrusion, wherein the first coil unit is disposed to surround the first protrusion, and the second coil unit surrounds the second protrusion. It can be arranged to

The lens driving device may include an upper elastic member disposed on the bobbin and coupled to the bobbin and the housing; and a support member coupled to the upper elastic member and the substrate, wherein the first coil unit and the second coil unit are electrically connected, and the upper elastic member includes a first upper elastic unit and a second spaced apart from each other. It may include two upper elastic units, one end of the first coil unit may be coupled to the first upper elastic unit, and one end of the second coil may be coupled to the second upper elastic unit.

Each of the second magnet unit and the third magnet unit may include a first surface facing the first coil, and the first surface may have two polarities.

Each of the first to third magnet units may include a second surface facing the second coil, and the second surface may have two polarities.

The camera module according to the present embodiment may include the first lens driving device and a second lens driving device adjacent to the first lens driving device.

The second lens driving device is disposed adjacent to a fourth side of a housing of the first lens driving device, and the second lens driving device includes: a housing; a bobbin disposed in the housing of the second lens driving device; a third coil disposed on an outer circumferential surface of the bobbin of the second lens driving device; a magnet disposed in the housing of the second lens driving device and facing the third coil; and a substrate including a fourth coil facing the magnet of the second lens driving device, wherein the magnet of the second lens driving device is disposed at a corner of a housing of the second lens driving device. may include.

Through this embodiment, mutual interference between magnets in the structure of the lens driving device for dual OIS can be minimized.

1 is a perspective view illustrating a dual camera module according to the present embodiment.
2 is a perspective view illustrating a state in which covers of each of the first lens driving device and the second lens driving device are removed according to the present embodiment.
3 is a perspective view illustrating an arrangement structure of a magnet, a coil, and a dummy member of each of the first lens driving device and the second lens driving device according to the present embodiment.
4 is an exploded perspective view of the first lens driving device according to the present embodiment.
5 is an exploded perspective view of a first mover of the first lens driving device according to the present embodiment.
6 is an exploded perspective view of a second mover of the first lens driving device according to the present embodiment.
7 is an exploded perspective view of a stator of the first lens driving device according to the present embodiment.
8 is an exploded perspective view of an elastic member of the first lens driving device according to the present embodiment.
9 is a cross-sectional view of the first lens driving device according to the present embodiment.
10 is a cross-sectional view of a part of the first lens driving device according to the present embodiment.
11 is a plan view of a part of the first lens driving device according to the present embodiment.
12 is an exploded perspective view of a second lens driving device according to the present embodiment.
13 is a diagram illustrating a magnetic field distribution of a magnet of a dual camera module according to a comparative example.
14 is a diagram illustrating a magnetic field distribution of a magnet of a dual camera module according to the present embodiment.
15 is a perspective view of an optical device according to the present embodiment.

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

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

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

An 'optical axis direction' used below is defined as an optical axis direction of a lens coupled to the lens driving device. Meanwhile, the 'optical axis direction' may correspond to a 'vertical direction', a 'z-axis direction', and the like.

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

The 'hand shake correction function' used below is defined as a function of moving or tilting the lens in a direction perpendicular to the optical axis direction to cancel the vibration (movement) generated in the image sensor by an external force. Meanwhile, 'hand shake correction' may be used interchangeably with 'OIS (Optical Image Stabilization)'.

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

15 is a perspective view of an optical device according to the present embodiment.

The optical device is any one of a mobile phone, a mobile phone, a smart phone, a portable smart device, a digital camera, a laptop computer, a digital broadcasting terminal, a PDA (Personal Digital Assistants), a PMP (Portable Multimedia Player), and a navigation device can be However, the type of optical device is not limited thereto, and any device for taking an image or photo may be called an optical device.

The optical device may include a body 1 . The body 1 may form the exterior of an optical device. The body 1 may accommodate the camera module 3 . The display unit 2 may be disposed on one surface of the body 1 . For example, the display unit 2 and the camera module 3 are disposed on one side of the body 1, and the camera module 3 is additionally disposed on the other side (a side opposite to the one side) of the body 1 . can

The optical device may include a display unit 2 . The display unit 2 may be disposed on one surface of the body 1 . The display unit 2 may output an image captured by the camera module 3 .

The optics may include a camera module 3 . The camera module 3 may be disposed on the body 1 . At least a portion of the camera module 3 may be accommodated in the body 1 . A plurality of camera modules 3 may be provided. The camera module 3 may be disposed on one surface of the main body 1 and the other surface of the main body 1 , respectively. The camera module 3 may capture an image of a subject. In this embodiment, the dual camera module may be applied to the camera module 3 of the optical device.

Hereinafter, the configuration of the dual camera module according to the present embodiment will be described with reference to the drawings.

1 is a perspective view illustrating a dual camera module according to the present embodiment.

The dual camera module may include a first camera module and a second camera module. The dual camera module may include a first lens driving device 1000 and a second lens driving device 2000 . The first camera module may include the first lens driving device 1000 . The second camera module may include a second lens composition apparatus 2000 . In the present embodiment, each of the first and second lens driving apparatuses 1000 and 2000 may perform an autofocus function and/or a handshake correction function. That is, in the present embodiment, the first and second lens driving apparatuses 1000 and 2000 may be 'OIS module (Optical Image Stabilization Module)', 'OIS actuator', or 'AF actuator'. The dual camera module may include a first lens driving device 1000 including a first surface and a second lens driving device 2000 including a second surface facing the first surface. The first surface may be one surface of the cover 1100 of the first lens driving apparatus 1000 to be described later, and the second surface may be one surface of the cover 2100 of the second lens driving apparatus 2000 to be described later. The dual camera module may include first and second lens driving devices 1000 and 2000 that are arranged side by side on the printed circuit board 11 . In another embodiment, the printed circuit board 11 may be separated so that the first lens driving device 1000 is disposed on the first printed circuit board and the second lens driving device 2000 is disposed on the second printed circuit board. have.

The dual camera module may include a lens module. The lens module may include at least one lens. The lens module may include a lens and a barrel. The lens module may include a first lens module coupled to the first lens driving device 1000 and a second lens module coupled to the second lens driving device 2000 . The first lens module may be coupled to the bobbin 1210 of the first lens driving device 1000 . The first lens module may be coupled to the bobbin 1210 by screw coupling and/or adhesive. The first lens module may move integrally with the bobbin 1210 . The second lens module may be coupled to the bobbin 2210 of the second lens driving device 2000 . The second lens module may be coupled to the bobbin 2210 by screw coupling and/or adhesive. The second lens module may move integrally with the bobbin 1210 .

The dual camera module may include a filter. The filter may include an infrared filter. The infrared filter may block light in the infrared region from being incident on the image sensor. The infrared filter may be disposed between the lens module and the image sensor. The infrared filter may include a first infrared filter disposed below the lens coupled to the first lens driving device 1000 and a second infrared filter disposed below the lens coupled to the second lens driving device 2000 . can For example, an infrared filter may be disposed on the sensor base 12 and 13 . As another example, infrared filters may be disposed on the bases 1430 and 2430 .

The dual camera module may include a printed circuit board 11 . The first lens driving device 1000 and the second lens driving device 2000 may be disposed on the printed circuit board 11 . In this case, the first sensor base 12 may be disposed between the printed circuit board 11 and the first lens driving device 1000 . Also, the second sensor base 13 may be disposed between the printed circuit board 11 and the second lens driving device 2000 . The printed circuit board 11 may be electrically connected to the first and second lens driving apparatuses 1000 and 2000 . An image sensor may be disposed on the printed circuit board 11 . The printed circuit board 11 may be electrically connected to the image sensor.

The dual camera module may include an image sensor. The image sensor may be disposed on the printed circuit board 11 . The image sensor may be electrically connected to the printed circuit board 11 . For example, the image sensor may be coupled to the printed circuit board 11 by a surface mounting technology (SMT). As another example, the image sensor may be coupled to the printed circuit board 11 by flip chip technology. The image sensor may include a first image sensor disposed below the lens coupled to the first lens driving device 1000 and a second image sensor disposed below the lens coupled to the second lens driving device 2000 . can The image sensor may be disposed so that the lens and the optical axis coincide. 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 dual camera module may include a controller. The control unit may be disposed on the printed circuit board 11 . The controller may individually control the direction, intensity, and amplitude of the current supplied to the first coil 1220 and the second coil 1422 of the first lens driving apparatus 1000 . The controller may individually control the direction, intensity, and amplitude of the current supplied to the first coil 2220 and the second coil 2422 of the second lens driving device 2000 . The controller may control the first and second lens driving apparatuses 1000 and 2000 to perform an autofocus function and/or a hand shake correction function. Furthermore, the controller may perform autofocus feedback control and/or handshake correction feedback control for the first and second lens driving apparatuses 1000 and 2000 .

Hereinafter, the configuration of the first lens driving device will be described with reference to the drawings.

2 is a perspective view illustrating a state in which covers of each of the first lens driving device and the second lens driving device are removed according to the present embodiment, and FIG. 3 is the first lens driving device and the second lens driving device according to the present embodiment. It is a perspective view showing the arrangement structure of each magnet, coil, and dummy member, FIG. 4 is an exploded perspective view of the first lens driving device according to the present embodiment, and FIG. 5 is the first lens driving device according to the present embodiment. An exploded perspective view of a first mover, FIG. 6 is an exploded perspective view of a second mover of the first lens driving device according to the present embodiment, and FIG. 7 is an exploded perspective view of a stator of the first lens driving device according to the present embodiment, FIG. 8 is an exploded perspective view of the elastic member of the first lens driving device according to the present embodiment, FIG. 9 is a cross-sectional view of the first lens driving device according to the present embodiment, and FIG. 10 is the first lens driving device according to the present embodiment. is a cross-sectional view of a part of , FIG. 11 is a plan view of a part of the first lens driving device according to the present embodiment, FIG. 13 is a view showing a magnetic field distribution of a magnet of a dual camera module according to a comparative example, and FIG. 14 is this view A diagram illustrating a magnetic field distribution of a magnet of a dual camera module according to an embodiment.

The first lens driving device 1000 may be a voice coil motor (VCM). Also, the first lens driving apparatus 1000 may be an OIS or an OIS for dual OIS.

The first lens driving device 1000 may include a cover 1100 . The cover 1100 may be coupled to the base 1430 . The cover 1100 may accommodate the housing 1310 inside. The cover 1100 may form an exterior of the first lens driving device 1000 . The cover 1100 may have a hexahedral shape with an open lower surface. The cover 1100 may be a non-magnetic material. The cover 1100 may be formed of a metal material. The cover 1100 may be formed of a metal plate. The cover 1100 may be connected to the ground portion of the printed circuit board 11 . Through this, the cover 1100 may be grounded. The cover 1100 may block electromagnetic interference (EMI). In this case, the cover 1100 may be referred to as an 'EMI shield can'.

The cover 1100 may include a top plate 1110 and a side plate 1120 . The cover 1100 may include an upper plate 1110 and a side plate 1120 extending downward from an outer periphery or edge of the upper plate 1110 . A lower end of the side plate 1120 of the cover 1100 may be disposed on the stepped portion 1434 of the base 1430 . The inner surface of the side plate 1120 of the cover 1100 may be coupled to the base 1430 by an adhesive.

The upper plate 1110 of the cover 1100 may include a hole 1111 . The hole 1111 may be formed in the upper plate 1110 of the cover 1100 . The hole 1111 may expose the lens to the image side. The hole 1111 may be formed in a size and shape corresponding to the lens. The size of the hole 1111 may be larger than the diameter of the lens module so that the lens module can be inserted and assembled through the hole 1111 . The light introduced through the hole 1111 may pass through the lens. In this case, the light passing through the lens may be converted into an electrical signal by the image sensor and acquired as an image.

The first lens driving device 1000 may include a first mover 1200 . The first mover 1200 may be coupled to a lens. The first mover 1200 may be coupled to the second mover 1300 through the elastic member 1500 . The first mover 1200 may move through interaction with the second mover 1300 . In this case, the first mover 1200 may move integrally with the lens. Meanwhile, the first mover 1200 may move during AF driving. In this case, the first mover 1200 may be referred to as an 'AF mover'. However, the first mover 1200 may move even when the OIS is driven.

The first mover 1200 may include a bobbin 1210 . The bobbin 1210 may be disposed inside or inside the housing 1310 . The bobbin 1210 may be disposed in the hole 1311 of the housing 1310 . The bobbin 1210 may be movably coupled to the housing 1310 . The bobbin 1210 may move in the optical axis direction with respect to the housing 1310 . A lens may be coupled to the bobbin 1210 . The bobbin 1210 and the lens may be coupled by screw coupling and/or adhesive. A first coil 1220 may be coupled to the bobbin 1210 . An upper elastic member 1510 may be coupled to the upper or upper surface of the bobbin 1210 . A lower elastic member 1520 may be coupled to a lower or lower surface of the bobbin 1210 . The bobbin 1210 may be coupled to the elastic member 1500 by heat sealing and/or adhesive. The adhesive bonding the bobbin 1210 and the lens, and the bobbin 1210 and the elastic member 1500 may be an epoxy cured by at least one of ultraviolet rays (UV), heat, and a laser.

The bobbin 1210 may include a hole 1211 . The hole 1211 may pass through the bobbin 1210 in the optical axis direction. A lens module may be accommodated in the hole 1211 . For example, a thread corresponding to a thread formed on an outer peripheral surface of the lens module may be formed on an inner circumferential surface of the bobbin 1210 forming the hole 1211 .

The bobbin 1210 may include a protrusion 1212 . The protrusion 1212 may be disposed on a side surface of the bobbin 1210 . The protrusion 1212 may be integrally formed by protruding from a side surface of the bobbin 1210 . A first coil 1220 may be wound around the protrusion 1212 . As a modification, the first coil 1220 already wound on the protrusion 1212 may be coupled. The protrusion 1212 may include a first protrusion and a second protrusion. The bobbin 1210 may include a first protrusion disposed on a first side surface of the bobbin 1210 and a second protrusion disposed on a second side surface disposed opposite to the first side surface of the bobbin 1210 . Each of the first protrusion and the second protrusion may be provided separately as two protrusions. As a modification, each of the first protrusion and the second protrusion may be formed in a straight line without being separated. The first coil unit 1221 may be wound around the first protrusion. A second coil unit 1222 may be wound on the second protrusion.

The first mover 1200 may include a first coil 1220 . The first coil 1220 may be disposed on the bobbin 1210 . The first coil 1220 may be disposed between the bobbin 1210 and the housing 1310 . The first coil 1220 may be disposed on the outer peripheral surface of the bobbin 1210 . The first coil 1220 may be directly wound on the bobbin 1210 . The first coil 1220 may face the magnet 1320 . The first coil 1220 may electromagnetically interact with the magnet 1320 . In this case, when a current is supplied to the first coil 1220 and an electromagnetic field is formed around the first coil 1220, the first coil ( 1220 ) by electromagnetic interaction between the magnet ( 1320 ) 1220 may move with respect to magnet 1320 . The first coil 1220 may be a single coil integrally formed.

The first coil 1220 may include both ends for supplying power. At this time, one end (lead-out line) of the first coil 1220 is coupled to the first upper elastic unit 1510a, and the other end (lead-out line) of the first coil 1220 is coupled to the second upper elastic unit 1510b and can be combined. That is, the first coil 1220 may be electrically connected to the upper elastic member 1510 . In more detail, the first coil 1220 may sequentially receive power through the printed circuit board 11 , the substrate 1410 , the support member 1600 , and the upper elastic member 1510 . As a modification, the first coil 1220 may be electrically connected to the lower elastic member 1520 .

The first coil 1220 may include a first coil unit 1221 and a second coil unit 1222 spaced apart from each other. The first coil 1220 may include a first coil unit 1221 facing the second magnet unit 1322 and a second coil unit 1222 facing the third magnet unit 1323 . The first coil unit 1221 and the second coil unit 1222 may be disposed on opposite sides of the outer surface of the bobbin 1210 to be spaced apart from each other. The first coil unit 1221 may be wound around the first protrusion 1212 so as to surround the upper and lower surfaces of the first protrusion 1212 . The first coil unit 1221 may be disposed by being inserted into the first protrusion 1212 , and the second coil unit 1222 may be disposed while being inserted into the second protrusion 1213 . The second coil unit 1222 may be wound around the second protrusion 1213 so as to surround the upper and lower surfaces of the second protrusion 1213 . The first coil unit 1221 and the second coil unit 1222 may be referred to as 'glasses coil'. The first coil unit 1221 and the second coil unit 1222 have an elliptical shape. It may have at least one shape among a track shape and a closed curve shape.

The first coil 1200 may not face the first magnet unit 1321 of the magnet 1320 . In more detail, the first coil 1220 may only face the second magnet unit 1322 and the third magnet unit 1323 of the magnet 1320 and not the first magnet unit 1321 . The first coil unit 1221 is disposed to face the second magnet unit 1322 , and the second coil unit 1222 is disposed to face the third magnet unit 1323 , but the first magnet unit 1321 has A divisional configuration of the opposing first coil 1220 may not be arranged.

The first coil 1220 may include a connection part (not shown) electrically connecting the first coil unit 1221 and the second coil unit 1222 . The connection part of the first coil 1220 may be a connection coil (not shown). One end of the first coil unit 1221 and one end of the second coil unit 1222 may be connected to the connecting portion of the first coil 1220 . The connection part of the first coil 1220 may be disposed between the first coil unit 1221 and the second coil unit 1222 . The connection portion of the first coil 1220 may face the first magnet unit 1321 . In another embodiment, the connection portion of the first coil 1220 may face the dummy member 1330 . The connection part of the first coil 1220 may be disposed between the first magnet unit 1321 and the bobbin 1210 or between the dummy member 1330 and the bobbin 1210 .

In this embodiment, the distance between the first coil unit 1221 and the second magnet unit 1322 and/or the distance between the second coil unit 1222 and the third magnet unit 1323 (see L1 in FIG. 11 ) may be 60 μm to 150 μm. The distance between the bobbin 1210 and the first magnet unit 1321 (see L2 of FIG. 11 ) may be 60 μm to 200 μm.

The first lens driving device 1000 may include a second mover 1300 . The second mover 1300 may be movably coupled to the stator 1400 through the support member 1600 . The second mover 1300 may support the first mover 1200 through the elastic member 1500 . The second mover 1300 may move the first mover 1200 or move together with the first mover 1200 . The second mover 1300 may move through interaction with the stator 1400 . The second mover 1300 may move when the OIS is driven. In this case, the second mover 1300 may be referred to as an 'OIS mover'. The second mover 1300 may move integrally with the first mover 1200 when the OIS is driven.

The second mover 1300 may include a housing 1310 . The housing 1310 may be disposed outside the bobbin 1210 . The housing 1310 may receive at least a portion of the bobbin 1210 therein or therein. The housing 1310 may be disposed in (inside) the cover 1100 . The housing 1310 may be disposed between the cover 1100 and the bobbin 1210 . The housing 1310 may be formed of a material different from that of the cover 1100 . The housing 1310 may be formed of an insulating material. The housing 1310 may be formed of an injection-molded material. The outer side of the housing 1310 may be spaced apart from the inner surface of the side plate 1120 of the cover 1100 . Through the space between the housing 1310 and the cover 1100 , the housing 1310 may move for OIS operation. A magnet 1320 may be disposed in the housing 1310 . The housing 1310 and the magnet 1320 may be coupled by an adhesive. An upper elastic member 1510 may be coupled to the upper or upper surface of the housing 1310 . A lower elastic member 1520 may be coupled to the upper or lower surface of the housing 1310 . The housing 1310 may be coupled to the elastic member 1500 by heat sealing and/or adhesive. The adhesive bonding the housing 1310 and the magnet 1320 and the housing 1310 and the elastic member 1500 may be an epoxy cured by at least one of ultraviolet rays (UV), heat, and a laser.

The housing 1310 may include four sides and four corners disposed between the four sides. The housing 1310 includes a first side portion disposed on the first surface side of the first lens driving device 1000, a second side portion disposed opposite to the first side portion, and disposed between the first side portion and the second side portion, It may include a third side and a fourth side disposed opposite to each other. The first side portion of the housing 1310 may be disposed on the first surface side of the first lens driving device 1000 . The housing 1310 may include four sides, and the four sides may be arbitrarily referred to as 'first side' to 'fourth side' to distinguish them from each other. For example, unlike the above description, the second side portion may be disposed on the first surface side of the first lens driving apparatus 1000 .

The housing 1310 may include a hole 1311 . The hole 1311 may be formed in the housing 1310 . The hole 1311 may be formed to pass through the housing 1310 in the optical axis direction. A bobbin 1210 may be disposed in the hole 1311 . The hole 1311 may be formed in a shape corresponding to the bobbin 1210 at least in part. The inner circumferential surface of the housing 1310 forming the hole 1311 may be spaced apart from the outer circumferential surface of the bobbin 1210 . However, the housing 1310 and the bobbin 1210 may overlap in at least a part in the optical axis direction to limit the movement stroke distance of the bobbin 1210 in the optical axis direction.

The housing 1310 may include a magnet coupling part 1312 . A magnet 1320 may be coupled to the magnet coupling unit 1312 . The magnet coupling part 1312 may include a receiving groove formed by recessing a portion of an inner peripheral surface and/or a lower surface of the housing 1310 . The magnet coupling portion 1312 may be formed on each of the four sides of the housing 1310 . As a modification, the magnet coupling portion 1312 may be formed at each of the four corner portions of the housing 1310 .

The housing 1310 may include a top plate 1313 . The housing 1310 may include an upper plate 1313 disposed above the upper surface of the magnet 1320 . The upper plate 1313 may support the upper surface of the magnet 1320 . An adhesive may be disposed between the top plate 1313 and the magnet 1320 . The upper plate 1313 may be disposed above a portion of the upper surface of the magnet 1320 . A stopper 1314 protruding toward the top plate 1110 of the cover 1100 may be disposed on the top plate 1313 . The upper plate 1313 may be integrally formed with the housing 1310 . The stopper 1314 may be integrally formed with the upper plate 1313 . The upper plate 1313 may be disposed on the second side, the third side, and the fourth side of the housing 1310 , respectively. That is, the three upper plates 1313 may be disposed on the housing 1310 . The upper plate 1313 may not be disposed on the first side of the housing 1310 on which the dummy member 1330 is disposed. The upper plate 1313 of the housing 1310 may be disposed on each of the second side, the third side, and the fourth side of the housing 1310 , and may not be disposed on the first side of the housing 1310 . That is, the upper plate 1313 of the housing 1310 may not be disposed on the upper portion of the dummy member 1330 disposed on the first side of the housing 1310 . That is, the housing 1310 may be asymmetric with respect to the central axis of the lens coupled to the bobbin 1210 .

The housing 1310 may include a stopper 1314 . The stopper 1314 may be disposed on the upper plate 1313 . The stopper 1314 may be integrally formed with the upper plate 1313 . Two stoppers 1314 may be provided for each top plate 1313 . That is, a total of six stoppers 1314 may be disposed in the housing 1310 . The two stoppers 1314 may be respectively disposed at both ends of the upper plate 1313 . An upper surface of the stopper 1314 may form an upper end of the housing 1310 . The stopper 1314 may overlap the upper plate 1110 of the cover 1100 in the optical axis direction. That is, when the housing 1310 continues to move upward, the upper surface of the stopper 1314 comes into contact with the upper plate 1110 of the cover 1100 . Accordingly, the stopper 1314 may limit the moving distance of the housing 1310 upward.

The second mover 1300 may include a magnet 1320 . The magnet 1320 may be disposed in the housing 1310 . The magnet 1320 may be fixed to the housing 1310 by an adhesive. The magnet 1320 may be disposed between the bobbin 1210 and the housing 1310 . The magnet 1320 may face the first coil 1220 . The magnet 1320 may electromagnetically interact with the first coil 1220 . The magnet 1320 may face the second coil 1422 . The magnet 1320 may electromagnetically interact with the second coil 1422 . The magnet 1320 may be commonly used for AF driving and OIS driving. The magnet 1320 may be disposed on the side of the housing 1310 . In this case, the magnet 1320 may be a flat magnet having a flat plate shape. As a modification, the magnet 1320 may be disposed at a corner of the housing 1310 . In this case, the magnet 1320 may be a corner magnet having a hexahedral shape in which the inner side is wider than the outer side.

In this embodiment, the upper surface of the magnet 1320 may include a first portion overlapping the upper elastic member 1510 in the optical axis direction. The first portion of the upper surface of the magnet 1320 may not overlap the housing 1310 in the optical axis direction. A first portion of the upper surface of the magnet 1320 may be exposed from the housing 1310 to face the upper elastic member 1510 . The first portion of the upper surface of the magnet 1320 may be in contact with the upper elastic member 1510 . The upper surface of the magnet 1320 may include a second portion overlapping the housing 1310 in the optical axis direction. An upper plate 1313 of the housing 1310 may be disposed above the second portion of the upper surface of the magnet 1320 . The second portion of the upper surface of the magnet 1320 may be coupled to the upper plate 1313 of the housing 1310 . The second portion of the upper surface of the magnet 1320 may not overlap the upper elastic member 1510 in the optical axis direction. The upper surface of the magnet 1320 may further include a third portion that does not overlap the housing 1310 and the upper elastic member 1510 in the optical axis direction. That is, the upper surface of the magnet 1320 has a first portion overlapping the upper elastic member 1510 in the optical axis direction, a second portion overlapping the upper plate 1313 of the housing 1310, and an upper elastic member 1510 and A third portion that does not overlap all of the upper plate 1313 of the housing 1310 may be included. However, the third part may not exist.

In this embodiment, the upper surface of the magnet 1320 may be disposed on the same plane as the upper surface of the housing 1310 to which the upper elastic member 1510 is coupled. For such a structure, a portion of the housing 1310 may be omitted in the present embodiment. That is, the structure may be described as a portion of the housing 1310 is omitted and the upper elastic member 1510 is disposed in the corresponding portion. A portion of the upper surface of the magnet 1320 may contact the upper elastic member 1510 . In addition, another portion of the upper surface of the magnet 1320 may contact the upper plate 1313 of the housing 1310 .

The magnet 1320 may include a plurality of magnets spaced apart from each other. The magnet 1320 may include three magnets spaced apart from each other. The magnet 1320 may include first to third magnet units 1321 , 1322 , 1323 . The magnet 1320 includes a first magnet unit 1321 disposed on the second side of the housing 1310 , a second magnet unit 1322 disposed on a third side of the housing 1310 , and the housing 1310 . It may include a third magnet unit 1323 disposed on the fourth side. The first magnet unit 1321 may face the first coil unit 1422a of the second coil 1422 . The second magnet unit 1322 may face the first coil unit 1221 of the first coil 1220 and may face the second coil unit 1422b of the second coil 1422 . The third magnet unit 1323 may face the second coil unit 1222 of the first coil 1220 and may face the third coil unit 1422c of the second coil 1422 . The second magnet unit 1322 and the third magnet unit 1323 may move the bobbin 1210 in the optical axis direction. The first magnet unit 1321 , the second magnet unit 1322 , and the third magnet unit 1323 may move the housing 1310 in a direction perpendicular to the optical axis direction.

The first magnet unit 1321 may be a 2-pole magnet. In this embodiment, the second magnet unit 1322 and the third magnet unit 1323 may be 4 pole magnets. The two-pole magnet may be a two-pole magnetized magnet, and the four-pole magnet may be a four-pole magnetized magnet. In this embodiment, through this, magnetic field interference between the magnet 1320 of the first lens driving device 1000 and the magnet 2320 of the second lens driving device 2000 may be reduced. In the comparative example, the second magnet unit 1322 and the third magnet unit 1323 are provided as two-pole magnets. Fig. 13 is a diagram showing the magnetic field distribution of the comparative example. Fig. 14 is a diagram showing the magnetic field distribution of the present embodiment. Comparing FIG. 14 with FIG. 13 , it can be confirmed that the magnetic field interference between the magnet 1320 of the first lens driving device 1000 and the magnet 2320 of the second lens driving device 2000 is reduced or eliminated.

Each of the second magnet unit 1322 and the third magnet unit 1323 may include a first surface facing the first coil 1220 . The first surface may include a neutral portion 1324 disposed in the horizontal direction at the center. The neutral portion 1324 may be a neutral region and may not include a polarity. The first surface may have different polarities in the upper and lower portions with respect to the neutral portion 1324 . That is, an upper side of the neutral portion 1324 may have an S pole, and a lower side of the neutral portion 1324 may have an N pole. As a modification, an upper side of the neutral portion 1324 may have an N pole, and a lower side of the neutral portion 1324 may have an S pole. The vertical length of the neutral portion 1324 (see L of FIG. 10 ) may be 0.1 mm to 0.5 mm.

Each of the first to third magnet units 1321 , 1322 , and 1323 may include a second surface facing the second coil 1422 and a third surface disposed opposite to the second surface. The second surface may be an inner side of the first lens driving device 1000 , and the third surface may be an outer side opposite to the inner side. The second and third surfaces of each of the first to third magnet units 1321, 1322, and 1323 may have different polarities. That is, the second surface may have an N pole, and the third surface may have an S pole. As a variant, the second side may have an S pole and the third side may have an N pole.

The second mover 1300 may include a dummy member 1330 . A dummy member 1330 may be disposed on the first side of the housing 1310 . The dummy member 1330 may include a non-magnetic material. The dummy member 1330 may have a mass corresponding to that of the first magnet unit 1321 . The dummy member 1330 may be disposed at a position corresponding to the first magnet unit 1321 for weight balance. Alternatively, the magnetic strength of the dummy member 1330 may be weaker than that of the first magnet unit 1321 . The dummy member 1330 may be disposed to adjust the center of gravity to the opposite side of the first magnet unit 1321 . The dummy member 1330 may be a non-magnetic material. The dummy member 1330 may be made of 95% or more of tungsten. That is, the dummy member 1330 may be a tungsten alloy. For example, the specific gravity of the dummy member 1330 may be 18000 or more. The entire upper surface of the dummy member 1330 may be exposed from the housing 1310 . That is, the upper surface of the dummy member 1330 may overlap with the housing 1310 in the optical axis direction or may not be supported. The upper plate 1313 of the housing 1310 may not be disposed on the upper side of the dummy member 1330 . The second coil 1422 may not be disposed between the dummy member 1330 and the substrate 1410 .

The dummy member 1330 may include a shape for assembly in the housing 1310 . The dummy member 1330 may include protrusions protruding to both sides. The dummy member 1330 may include a shape for avoiding interference with adjacent moving parts. The dummy member 1330 may include a groove formed at a portion where an upper surface and an inner surface meet. A length in a horizontal direction of the outer surface of the dummy member 1330 may be shorter than a length in a corresponding direction of the first magnet unit 1321 . The thickness of the dummy member 1330 may correspond to the thickness of the first magnet unit 1321 . Alternatively, the thickness of the dummy member 1330 may be greater or smaller than the thickness of the first magnet unit 1321 . The shape of the dummy member 1330 may be different from the shape of the first magnet unit 1321 . As a modification, the shape of the dummy member 1330 may correspond to the shape of the first magnet unit 1321 . The dummy member 1330 may be disposed at the same height as the first magnet unit 1321 . Alternatively, the dummy member 1330 may be disposed higher or lower than the first magnet unit 1321 . An upper end of the dummy member 1330 may be disposed at the same height as an upper end of the first magnet unit 1321 . Alternatively, the upper end of the dummy member 1330 may be disposed higher or lower than the upper end of the first magnet unit 1321 . The lower end of the dummy member 1330 may be disposed at a height corresponding to the lower end of the first magnet unit 1321 . Alternatively, the lower end of the dummy member 1330 may be disposed higher or lower than the lower end of the first magnet unit 1321 . 3 , the dummy member 1330 may be disposed between the magnet 1320 of the first lens driving device 1000 and the magnet 2320 of the second lens driving device 2000 . The horizontal length of the dummy member 1330 may be equal to, shorter than, or longer than the horizontal length of the first magnet unit 1321 . The vertical length of the dummy member 1330 may be equal to, shorter than, or longer than the horizontal length of the first magnet unit 1321 .

The first lens driving device 1000 may include a stator 1400 . The stator 1400 may be disposed below the first and second movers 1200 and 1300 . The stator 1400 may movably support the second mover 1300 . The stator 1400 may move the second mover 1300 . At this time, the first mover 1200 may also move together with the second mover 1300 .

The stator 1400 may include a substrate 1410 . The substrate 1410 may include a second coil 1422 facing the magnet 1320 . Alternatively, the substrate 1410 may include a circuit member 1420 including a second coil 1422 facing the magnet 1320 . The substrate 1410 may be disposed on the base 1430 . The substrate 1410 may be disposed between the housing 1310 and the base 1430 . A support member 1600 may be coupled to the substrate 1410 . The substrate 1410 may supply power to the second coil 1422 . The substrate 1410 may be coupled to the circuit member 1420 . The substrate 1410 may be coupled to the second coil 1422 . The substrate 1410 may be coupled to the printed circuit board 11 disposed below the base 1430 . The substrate 1410 may include a flexible printed circuit board (FPCB). The substrate 1410 may be bent in some parts.

The substrate 1410 may include a body portion 1411 . The substrate 14100 may include a hole 1411a formed in the body portion 1411. The substrate 1410 may include a hole 1411a corresponding to a lens coupled to the bobbin 1210. Hole ( 1411a may be eccentrically disposed toward the first surface of the first lens driving device 1000. In the present embodiment, the number of turns of the first coil unit 1422a is increased through the eccentric arrangement of the holes 1411a. It is possible to secure a space for increasing the base 1430, at least one of the substrate 1410 and the circuit member 1420. The hole 1411a of the substrate 1410 is formed closer to one side of the substrate 1411. In this case, one side of the substrate 1410 may be adjacent to the dummy member 1330. The shortest distance from the other side opposite to the one side of the substrate 1410 to the hole 1411a is from one side. It may be greater than the shortest distance to the hole 1411a.

The substrate 1410 has a hole 1411a, an inner peripheral surface formed by the hole 1411a, a first side disposed on the first side of the housing 1310, and a second side of the housing 1310. A second aspect may be included. The distance between the inner peripheral surface of the substrate 1410 and the second side surface of the substrate 1410 (see W4 of FIG. 7 ) is the distance between the inner peripheral surface of the substrate 1410 and the first side surface of the substrate 1410 (see W3 of FIG. 7 ) ) can be longer. A first coil unit 1422a may be disposed between the inner peripheral surface of the substrate 1410 and the second side surface of the substrate 1410 . The second coil 1422 may not be disposed between the inner peripheral surface of the substrate 1410 and the first side surface of the substrate 1410 .

The substrate 1410 includes a first side disposed on the first side of the first lens driving device 1000 , a second side disposed opposite to the first side, and disposed between the first side and the second side, It may include a third side and a fourth side disposed opposite to each other. In this case, the distance between the third side and the fourth side (see W1 of FIG. 7 ) may be longer than the distance between the first side and the second side (see W2 of FIG. 7 ). In this embodiment, through the aforementioned structure, the length L1 of the first coil unit 1422a in the longitudinal direction is longer than the length L2 of the second and third coil units 1422b and 1422c in the longitudinal direction. space can be obtained.

The substrate 1410 may include a terminal unit 1412 . The terminal portion 1412 is the board 1410?? It may extend from the body portion 1411 . The terminal unit 1412 may be formed by bending a portion of the substrate 1410 downward. At least a portion of the terminal portion 1412 may be exposed to the outside. The terminal unit 1412 may be coupled to the printed circuit board 11 disposed below the base 1430 by soldering. The terminal part 1412 may be disposed in the terminal receiving part 1433 of the base 1430 .

The substrate 1410 may include a circuit member 1420 . The stator 1400 may include a circuit member 1420 . The circuit member 1420 may be disposed on the base 1430 . The circuit member 1420 may be disposed on the substrate 1410 . The circuit member 1420 may be disposed between the magnet 1320 and the base 1430 . Here, although the circuit member 1420 is described as a configuration separate from the substrate 1410 , the circuit member 1420 may be understood as a configuration included in the substrate 1410 .

The circuit member 1420 may include a substrate unit 1421 . The substrate unit 1421 may be a circuit board. The substrate 1421 may be an FPCB. The second coil 1422 may be integrally formed on the substrate 1421 as a fine pattern coil (FP coil). A hole through which the support member 1600 passes may be formed in the substrate portion 1421 . A hole 1421a may be formed in the substrate portion 1421 . The hole 1421a of the substrate part 1421 may be formed to correspond to the hole 1411a of the substrate 1410 .

The circuit member 1420 may include a second coil 1422 . The second coil 1422 may face the magnet 1320 . The second coil 1422 may electromagnetically interact with the magnet 1320 . In this case, when a current is supplied to the second coil 1422 and a magnetic field is formed around the second coil 1422 , the magnet 1320 by electromagnetic interaction between the second coil 1422 and the magnet 1320 . may move with respect to the second coil 1422 . The second coil 1422 may move the housing 1310 and the bobbin 1210 in a direction perpendicular to the optical axis with respect to the base 1430 through electromagnetic interaction with the magnet 1320 . The second coil 1422 may be a fine pattern coil (FP coil) integrally formed with the substrate unit 1421 .

The second coil 1422 includes a first coil unit 1422a facing the first magnet unit 1321, a second coil unit 1422b facing the second magnet unit 1322, and a third magnet unit ( 1323) and may include a third coil unit 1422c opposite to the third coil unit 1422c. The number of times the coil is wound in the first coil unit 1422a may be greater than the number of times the coil is wound in the second coil unit 1422b. The number of times the coil is wound in the third coil unit 1422c may correspond to the number of times the coil is wound in the second coil unit 1422b. In this embodiment, when the OIS is driven, the movement in the X-axis direction may be performed through the first coil unit 1422a and the movement in the Y-axis direction may be performed through the second coil unit 1422b and the third coil unit 1422c. . Therefore, in this embodiment, in order to compensate for insufficient propulsion in the X-axis direction, the number of turns of the first coil unit 1422a is higher than the number of turns of the second coil unit 1422b and the third coil unit 1422c. can For example, a ratio of the number of turns of the first coil unit 1422a to the number of turns of the second coil unit 1422b (or the third coil unit 1422c) may be 1.5:2.0 to 1:1. This is to compensate for the fact that the second coil 1422 is not disposed at a position opposite to the first coil unit 1422a. That is, the ratio of the number of turns of the first coil unit 1422a to the number of turns of the second coil unit 1422b (or the third coil unit 1422c) may be arranged up to 1.5:2.0 due to spatial constraints. The length in the longitudinal direction of the first coil unit 1422a (see L1 in FIG. 7 ) is longer than the length in the longitudinal direction of each of the second coil unit 1422b and the third coil unit 1422c (see L2 in FIG. 7 ). can The length of the first coil unit 1422a in the width direction (see L3 of FIG. 7 ) is longer than the length of each of the second coil unit 1422b and the third coil unit 1422c in the width direction (see L4 of FIG. 7 ). can

In this embodiment, the central axis of the lens coupled to the bobbin 1210 (see C1 in FIG. 9 ) is in the direction of the dummy member 1330 from the central axis (see C2 in FIG. 9 ) of the first lens driving device 1000 . It can be arranged eccentrically. The central axis C1 of the bobbin 1210 may be eccentrically disposed in the direction of the dummy member 1330 from the central axis C2 of the housing 1310 . In this case, the central axis C1 of the lens may coincide with the central axis C1 of the bobbin 1210 or the central axis of the hole 1311 of the housing 1310 . In addition, the central axis C2 of the first lens driving device 1000 and the central axis C2 of the housing 1310 may coincide with each other. In this case, the central axis C2 of the housing 1310 may be a central axis when viewed from the outside of the housing 1310 rather than the central axis of the hole 1311 of the housing 1310 . Also, the hole 1411a may be eccentrically disposed toward the first surface of the first lens driving apparatus 1000 . In this embodiment, through the aforementioned structure, the length L1 of the first coil unit 1422a in the longitudinal direction is longer than the length L2 of the second and third coil units 1422b and 1422c in the longitudinal direction. space can be obtained.

The stator 1400 may include a base 1430 . The base 1430 may be disposed below the housing 1310 . The base 1430 may be disposed below the substrate 1410 . A substrate 1410 may be disposed on an upper surface of the base 1430 . The base 1430 may be coupled to the cover 1100 . The base 1430 may be disposed above the printed circuit board 11 .

The base 1430 may include a hole 1431 . The hole 1431 may be formed in the base 1430 . The hole 1431 may be formed to pass through the base 1430 in the optical axis direction. Light passing through the lens module through the hole 1431 may be incident on the image sensor. That is, the light passing through the lens module may pass through the hole 1421a of the circuit member 1420 , the hole 1411a of the substrate 1410 , and the hole 1431 of the base 1430 to be incident on the image sensor.

The base 1430 may include a sensor coupling unit 1432 . A second sensor (not shown) may be disposed in the sensor coupling unit 1432 . The sensor coupling unit 1432 may accommodate at least a portion of the second sensor. The sensor coupling unit 1432 may include a groove formed by recessing the upper surface of the base 1430 . The sensor coupling unit 1432 may include two grooves. In this case, a second sensor is disposed in each of the two grooves to detect the movement in the X-axis direction and the movement in the Y-axis direction of the magnet 1320 .

The base 1430 may include a terminal accommodating part 1433 . The terminal portion 1412 of the substrate 1410 may be disposed in the terminal receiving portion 1433 . The terminal accommodating part 1433 may include a groove formed by recessing a portion of a side surface of the base 1430 inward. The width of the terminal receiving portion 1433 may be formed to correspond to the width of the terminal portion 1412 of the substrate 1410 . The length of the terminal receiving portion 1433 may be formed to correspond to the length of the terminal portion 1412 of the substrate 1410 .

The base 1430 may include a stepped portion 1434 . The step portion 1434 may be formed on a side surface of the base 1430 . The step portion 1434 may be formed around the outer peripheral surface of the base 1430 . The stepped portion 1434 may be formed by recessing an upper portion of a side surface of the base 1430 . Alternatively, the stepped portion 1434 may be formed by protruding a lower portion of a side surface of the base 1430 . The lower end of the side plate 1120 of the cover 1100 may be disposed on the stepped portion 1434 .

The first lens driving device 1000 may include an elastic member 1500 . The elastic member 1500 may be coupled to the bobbin 1210 and the housing 1310 . The elastic member 1500 may elastically support the bobbin 1210 . The elastic member 1500 may have elasticity at least in part. The elastic member 1500 may movably support the bobbin 1210 . The elastic member 1500 may support the movement of the bobbin 1210 when the AF is driven. In this case, the elastic member 1500 may be referred to as an 'AF support member'.

The elastic member 1500 may include an upper elastic member 1510 . The upper elastic member 1510 may be disposed above the bobbin 1210 . The upper elastic member 1510 may be coupled to the bobbin 1210 and the housing 1310 . The upper elastic member 1510 may be coupled to the upper surface of the bobbin 1210 . The upper elastic member 1510 may be coupled to the upper surface of the housing 1310 . The upper elastic member 1510 may be coupled to the support member 1600 . The upper elastic member 1510 may be formed of a leaf spring.

The upper elastic member 1510 may be used as a conductive line for supplying electricity to the first coil 1220 . The upper elastic member 1510 may include a first upper elastic unit 1510a and a second upper elastic unit 1510b that are spaced apart from each other. The first upper elastic unit 1510a may be coupled to one end of the first coil 1220 , and the second upper elastic unit 1510b may be coupled to the other end of the first coil 1220 . The upper elastic member 1510 and the first coil 1220 may be coupled by soldering.

The upper elastic member 1510 may include an outer portion 1511 . The outer part 1511 may be coupled to the housing 1310 . The outer part 1511 may be coupled to the upper surface of the housing 1310 . The outer portion 1511 may include a hole or groove coupled to the protrusion of the housing 1310 . The outer part 1511 may be fixed to the housing 1310 by an adhesive.

The upper elastic member 1510 may include an inner portion 1512 . The inner portion 1512 may be coupled to the bobbin 1210 . The inner portion 1512 may be coupled to the upper surface of the bobbin 1210 . The inner portion 1512 may include a hole or groove coupled to the protrusion of the bobbin 1210 . The inner portion 1512 may be fixed to the bobbin 1210 by an adhesive.

The upper elastic member 1510 may include a connection part 1513 . The connection part 1513 may connect the outer part 1511 and the inner part 1512 . The connecting portion 1513 may elastically connect the outer portion 1511 and the inner portion 1512 . The connection part 1513 may have elasticity. In this case, the connection part 1513 may be referred to as an 'elastic part'. The connection part 1513 may be formed by bending two or more times.

The upper elastic member 1510 may include a coupling part 1514 . The coupling part 1514 may be coupled to the support member 1600 . The coupling part 1514 may be coupled to the support member 1600 by soldering. The coupling part 1514 may include a hole or a groove coupled to the support member 1600 . The coupling portion 1514 may extend from the outer portion 1511 . The coupling portion 1514 may include a bent portion formed by bending.

The elastic member 1500 may include a lower elastic member 1520 . The lower elastic member 1520 may be disposed below the bobbin 1210 . The lower elastic member 1520 may be coupled to the bobbin 1210 and the housing 1310 . The lower elastic member 1520 may be coupled to the lower surface of the bobbin 1210 . The lower elastic member 1520 may be coupled to the lower surface of the housing 1310 . The lower elastic member 1520 may be formed of a leaf spring. The lower elastic member 1520 may be integrally formed.

The lower elastic member 1520 may include an outer portion 1521 . The outer part 1521 may be coupled to the housing 1310 . The outer part 1521 may be coupled to the lower surface of the housing 1310 . The outer portion 1521 may include a hole or groove coupled to the protrusion of the housing 1310 . The outer portion 1521 may be fixed to the housing 1310 by an adhesive.

The lower elastic member 1520 may include an inner portion 1522 . The inner portion 1522 may be coupled to the bobbin 1210 . The inner portion 1522 may be coupled to the lower surface of the bobbin 1210 . The inner portion 1522 may include a hole or groove coupled to the protrusion of the bobbin 1210 . The inner portion 1522 may be fixed to the bobbin 1210 by an adhesive.

The lower elastic member 1520 may include a connection part 1523 . The connection part 1523 may connect the outer part 1521 and the inner part 1522 . The connecting portion 1523 may elastically connect the outer portion 1521 and the inner portion 1522 . The connection part 1523 may have elasticity. In this case, the connection part 1523 may be referred to as an 'elastic part'. The connection part 1523 may be formed by bending two or more times.

The first lens driving device 1000 may include a support member 1600 . The support member 1600 may be a suspension wire. The support member 1600 may movably support the housing 1310 . The support member 1600 may elastically support the housing 1310 . The support member 1600 may have elasticity at least in part. The support member 1600 may support the movement of the housing 1310 and the bobbin 1210 when the OIS is driven. In this case, the support member 1600 may be referred to as an 'OIS support member'. The support member 1600 may include a plurality of wires. The support member 1600 may include four wires spaced apart from each other. As a modification, the support member 1600 may be formed of a leaf spring. The support member 1600 may be coupled to the upper elastic member 1510 and the substrate 1410 . The support member 1600 may be coupled to the upper elastic member 1510 and the circuit member 1420 of the substrate 1410 . The support member 1600 may pass through a hole in the substrate 1410 to be soldered to the lower surface of the substrate 1410 . Alternatively, the support member 1600 may be soldered to the lower surface of the circuit member 1420 through a hole of the circuit member 1420 .

In the first lens driving device 1000 , a damper (not shown) may be disposed on the support member 1600 . The damper may be disposed on the support member 1600 and the housing 1310 . The damper may be disposed on the elastic member 1500 . The damper may be disposed on the elastic member 1500 and/or the support member 1600 to prevent a resonance phenomenon occurring in the elastic member 1500 and/or the support member 1600 .

The first lens driving device 1000 may include a first sensor (not shown). The first sensor may be a sensor for AF feedback. The first sensor may be disposed on the bobbin 1210 . As a modification, the first sensor may be disposed in the housing 1310 . The first sensor may detect the movement of the first mover 1200 . The first sensor may include a Hall sensor. In this case, the Hall sensor may detect the movement of the bobbin 1210 and the lens by detecting the magnetic force of the magnet 1320 or a separately provided magnet. The sensed value sensed by the first sensor may be used for AF feedback control.

The first lens driving device 1000 may include a second sensor. The second sensor may be a sensor for OIS feedback. The second sensor may be disposed between the base 1430 and the substrate 1410 . The second sensor may detect the movement of the second mover 1300 . The second sensor may include a Hall sensor. In this case, the Hall sensor may sense the magnetic force of the magnet 1320 to detect the movement of the housing 1310 and the magnet 1320 . The sensed value sensed by the second sensor may be used for OIS feedback control.

Hereinafter, the configuration of the second lens driving device will be described with reference to the drawings.

12 is an exploded perspective view of a second lens driving device according to the present embodiment.

The second lens driving device 2000 may be a voice coil motor (VCM).

The second lens driving device 2000 may include a cover 2100 . The cover 2100 may accommodate the housing 2310 inside (inside). The cover 2100 may be coupled to the base 2430 .

The second lens driving device 2000 may include a first mover 2200 . The first mover 2200 may move when the AF is driven.

The first mover 2200 may include a bobbin 2210 . The bobbin 2210 may be disposed inside (inside) the housing 2310 . The bobbin 2210 may be movably coupled to the housing 2310 by the elastic member 1500 .

The first mover 2200 may include a first coil 2220 . The first coil 2220 may be disposed on the bobbin 2210 . The first coil 2220 may face the magnet 2320 . The first mover 2200 may perform AF driving through electromagnetic interaction between the first coil 2220 and the magnet 2320 .

The second lens driving device 2000 may include a second mover 2300 . The second mover 2300 may move when the OIS is driven. When the OIS is driven, the first mover 2200 may move together with the second mover 2300 .

The second mover 2300 may include a housing 2310 . The housing 2310 may be disposed outside the bobbin 2210 . The housing 2310 may accommodate the bobbin 2210 therein. The housing 2310 may be disposed between the bobbin 2210 and the cover 2100 .

The second mover 2300 may include a magnet 2320 . The magnet 2320 may be disposed in the housing 2310 . The magnet 2320 may face the first coil 2220 . The magnet 2320 may face the second coil 2422 . The magnet 2320 may be disposed at four corners disposed between the four sides of the housing 2310 . The magnet 2320 may include four corner magnets disposed at each of the four corner portions.

The second lens driving device 2000 may include a stator 2400 . The stator 2400 may movably support the second mover 2300 .

The stator 2400 may include a substrate 2410 . The substrate 2410 may be disposed on the base 1430 . The substrate 2410 may be disposed between the housing 1310 and the base 1430 . The substrate 2410 may include a circuit member 2420 including a second coil 2422 facing the magnet 2320 . The substrate 2410 may be disposed on the base 2430 .

The substrate 2410 may include a terminal part 2412 . The substrate 2410 may include a terminal part 2412 formed by being partially bent. The terminal unit 2412 may be coupled to the printed circuit board 11 by soldering.

The substrate 2410 may include a circuit member 2420 . The circuit member 2420 may include a substrate portion and a second coil 2422 formed of a fine pattern coil (FP coil) on the substrate portion. The circuit member 2420 may include a second coil 2422 . The second coil 2422 may face the magnet 2320 . OIS driving may be performed by electromagnetic interaction between the second coil 2422 and the magnet 2320 .

The stator 2400 may include a base 2430 . The base 2430 may be disposed below the housing 2310 . The base 2430 may support the substrate 2410 .

The second lens driving device 2000 may include an elastic member 2500 . The elastic member 2500 may be coupled to the bobbin 2210 and the housing 2310 . The elastic member 2500 may support the movement of the bobbin 2210 when the AF is driven. The elastic member 2500 may include an upper elastic member 2510 . The upper elastic member 2510 may be disposed above the bobbin 2210 and coupled to the bobbin 2210 and the housing 2310 . The elastic member 2500 may include a lower elastic member 2520 . The lower elastic member 2520 may be disposed below the bobbin 2210 and coupled to the bobbin 2210 and the housing 2310 .

The second lens driving device 2000 may include a support member 2600 . The support member 2600 may movably support the second mover 2300 . The support member 2600 may be coupled to the upper elastic member 2510 and the substrate 2410 .

This embodiment intends to propose a structure capable of excluding mutual interference between magnets in a voice coil motor (VCM) structure.

In the present embodiment, the magnet 1320 of the first lens driving device 1000 may include three magnets, two magnets may be a four-pole magnet, and the other magnet may be a two-pole magnet. Two first coils 1220 are circuit-connected in series and disposed to face the 4-pole magnets, respectively, to provide the necessary driving force for AF operation. It can provide OIS momentum. A dummy mass is disposed on the opposite side of the two-pole magnet to align the center of gravity to prevent oscillation due to eccentricity of weight during OIS operation.

With the mechanical configuration of the present embodiment, the first coil 1220 is wound in a straight line on two opposite sides of the four sides of the bobbin 1210, and instead of the four magnets, three magnets and a dummy member may be assembled to the housing. In the Y direction, the driving force is generated in the divided configuration of two 4-pole magnetizing magnets and a pair of second coils 1422, but in the X direction, the driving force is generated only in the divided configuration of one 2-pole magnetizing magnet and one second coil 1422. Because of this, the driving force in the X direction is inevitably small. To solve this, in this embodiment, the lens central axis C1 is eccentric from the product central axis C2 to the dummy member 1330 direction, and the remaining space on the base 1430 side in the direction of the two-pole magnet is used to make the second second By increasing the number of turns of the coil 1422, the driving force in the X direction is increased.

As in the comparative example, when only a two-pole magnet is used, the density of magnetic field distribution with adjacent magnets increases, and attractive or repulsive force occurs between adjacent VCMs, which may cause difficulties in OIS control. The magnetic field distribution according to the comparative example is shown in FIG. 13 .

In this embodiment, the effect of reducing the magnetic field interference between the magnets of the two lens driving apparatuses can be obtained by applying the 4-pole magnetizing magnet. This is shown in FIG. 14 . Meanwhile, in the present embodiment, when the attractive or repulsive force between adjacent VCMs due to magnetic field interference is designed to a negligible level, OIS control is possible while ignoring the influence of magnetic field interference.

In this embodiment, the assembly surface of the upper elastic member 1510 and the magnet 1320 by deleting the portion constituting the minimum injection thickness of the housing 1310 in contact with the top surface of the magnet 1320 in the comparative example. It can be configured so that the top surfaces of the In addition, in this embodiment, the space where the upper elastic member 1510 does not pass is on the same plane as the assembly surface of the upper elastic member 1510 but is filled with an injection material to form the outer part where the stopper 1314 is located. The upper plate 1313 of 1310 may be configured. When viewed from the top (when viewed in a top view state), in this embodiment, as shown in FIG. 11 , a portion of the upper surface of the magnet 1320 is exposed while the housing 1310 maintains a distance from the cover 1100. The magnet 1320 may be mechanically constrained by the top plate 1313 of the housing 1310 connected to the stopper 1314 of the . That is, through this embodiment, the effect of mechanical restraint of the magnet 1320 and the effect of assembling the upper surface of the magnet 1320 upward can be secured at the same time.

In the above, even though it has been described that all the components constituting the embodiment of the present invention are combined or operated in combination, the present invention is not necessarily limited to including all the components of the embodiment. That is, the present invention may include one or more of all the components of the embodiment and may operate through these components. In addition, since the term 'comprising' described above means that the corresponding component may be embedded unless otherwise stated, other components are not excluded, but other components may be further included in addition to the corresponding component. should be interpreted as being In addition, the term 'arranged' described above should be interpreted as a term including the case where it is manufactured and arranged as a separate member and the case where it is manufactured and arranged as an integral part.

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

1000: first lens driving device 2000: second lens driving device

Claims (20)

Base;
a housing disposed on the base;
a bobbin disposed within the housing;
a first coil disposed on the bobbin;
a second coil disposed on the base;
a magnet disposed on the housing; and
and a dummy member disposed on the housing;
The housing comprises a first side and a second side disposed opposite to each other, and a third side and a fourth side disposed opposite to each other,
The magnet comprises a first magnet disposed on the first side of the housing, a second magnet disposed on the third side of the housing, and a third magnet disposed on the fourth side of the housing,
The dummy member is disposed on the second side of the housing,
The dummy member has a magnetic strength weaker than that of the first magnet or includes a non-magnetic material. According to claim 1,
A lens driving device in which a coil is not disposed between the bobbin and the dummy member. According to claim 1,
The dummy member has a mass corresponding to that of the first magnet. According to claim 1,
The dummy member is a lens driving device formed in a shape different from that of the first magnet. According to claim 1,
The first coil includes a first coil unit interacting with the second magnet and a second coil unit interacting with the third magnet,
A lens driving device in which a coil interacting with the first magnet is not disposed between the bobbin and the first magnet. 6. The method of claim 5,
The first coil includes a connecting coil connecting the first coil unit and the second coil unit,
The connecting coil of the first coil is disposed between the first magnet and the bobbin or between the dummy member and the bobbin. According to claim 1,
The first magnet is a two-pole magnet,
The second magnet and the third magnet are four-pole magnets. According to claim 1,
and a substrate disposed on the base and including a hole,
the second coil is disposed on the substrate;
The hole of the substrate is disposed closer to one of both sides of the substrate. 9. The method of claim 8,
The substrate comprises four sides,
The one side of the substrate is disposed closest to the dummy member among the four side surfaces of the substrate. According to claim 1,
The second coil includes a third coil unit interacting with the first magnet, a fourth coil unit interacting with the second magnet, and a fifth coil unit interacting with the third magnet. Device. According to claim 1,
The bobbin moves in the optical axis direction by the interaction between the first coil and the magnet,
The bobbin and the housing move in a direction perpendicular to the optical axis direction by the interaction between the second coil and the magnet. 6. The method of claim 5,
The first coil unit and the second coil unit have an elliptical shape. A lens driving device having at least one of a track shape and a closed curve shape. 6. The method of claim 5,
an upper elastic member disposed on the bobbin and coupled to the bobbin and the housing;
The upper elastic member is a lens driving device for electrically connecting the first coil unit and the second coil unit. According to claim 1,
Each of the second magnet and the third magnet includes a first surface facing the first coil,
The first surface is a lens driving device having two polarities. According to claim 1,
Each of the first to third magnets includes a second surface facing the second coil,
The second surface is a lens driving device having two polarities. Base;
a housing disposed on the base;
a bobbin disposed within the housing;
a first coil disposed on the bobbin;
a second coil disposed on the base;
a magnet disposed on the housing; and
and a dummy member disposed on the housing;
The magnet includes first to third magnets,
The second magnet is disposed on the opposite side of the third magnet with respect to the bobbin,
The dummy member is disposed on the opposite side of the first magnet with respect to the bobbin,
The dummy member has a magnetic strength weaker than that of the first magnet or includes a non-magnetic material. A first lens driving device according to any one of claims 1 to 16; and
A camera module including a second lens driving device adjacent to the first lens driving device. 18. The method of claim 17,
the second lens driving device is disposed adjacent to the dummy member of the first lens driving device;
The second lens driving device is
Base;
a housing disposed on the base of the second lens driving device;
a bobbin disposed in the housing of the second lens driving device;
a third coil disposed on the bobbin of the second lens driving device;
a fourth coil disposed on the base of the second lens driving device; and
and a magnet disposed in the housing of the second lens driving device,
The magnet of the second lens driving device includes four magnets disposed at corners of the housing of the second lens driving device. main body;
The camera module of claim 17 disposed on the body; and
and a display disposed on the main body and outputting an image photographed by the camera module. Base;
a housing disposed on the base;
a bobbin disposed within the housing;
a first coil disposed on the bobbin;
a second coil disposed on the base; and
A lens driving device including a magnet disposed on the housing.

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