KR102571260B1 - Lens driving device, camera module and optical apparatus - Google Patents

Abstract

This embodiment, the base; a housing positioned above the base; a first driving unit located on the base; a second driving unit located in the housing and facing the first driving unit; and a first support member coupled to the base and the housing, wherein the first support member includes a lower coupling portion coupled to the base, an upper coupling portion coupled to the housing, the lower coupling portion, and the upper coupling portion coupled to the housing. A first connection part connecting the upper coupling part and a second connection part connecting the lower coupling part and the upper coupling part and spaced apart from the first connection part, wherein the lower coupling part includes a first lower coupling part connected to the first connection part. It includes a side part, a second lower part connected to the second connection part, and a third lower part directly connecting the first lower part and the second lower part, wherein the third lower part is in a direction perpendicular to the optical axis direction. It relates to a lens driving device overlapping the base.

Description

Lens driving device, camera module and optical apparatus {Lens driving device, camera module and optical apparatus}

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

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

As the distribution of various portable terminals is widely generalized and wireless Internet services are commercialized, consumers' demands related to portable terminals are also diversifying, and various types of additional devices are being installed in portable terminals.

Among them, a typical example is a camera module that takes a picture or video of a subject. Recently, a camera module capable of performing an image stabilization function is being developed. Meanwhile, in the camera module for the camera shake correction function mentioned above, a hand shake correction spring for supporting the mover movably relative to the stator is required.

However, in the camera module for hand shake correction function according to the prior art, there is a problem due to spatial limitations in design of the leg of the hand shake correction spring. In addition, in the process of soldering a substrate for supplying power and a spring for image stabilization, a solder ball bounces to cause a short or a foreign substance penetrates, which is a problem. In addition, there is a problem in that the contact area between the hand shake compensating spring and the base on which the stator is disposed is limited.
(Patent Document 1) KR 10-2016-0000728 A

In order to solve the above-described problem, the present embodiment intends to provide a lens driving device in which a design for minimizing an arrangement structure between an image stabilization spring, a substrate of a stator, and a base on which the substrate is disposed is reflected.

This embodiment is intended to provide a camera module and optical device including the lens driving device.

The lens driving device according to the present embodiment includes a base; a housing positioned above the base; a third driving unit located on the base; a second driving unit located in the housing and facing the third driving unit; and a first support member coupled to the base and the housing, wherein the first support member includes a lower coupling portion coupled to the base, an upper coupling portion coupled to the housing, the lower coupling portion, and the upper coupling portion coupled to the housing. A first connection part connecting the upper coupling part and a second connection part connecting the lower coupling part and the upper coupling part and spaced apart from the first connection part, wherein the lower coupling part includes a first lower coupling part connected to the first connection part. It includes a side part, a second lower part connected to the second connection part, and a third lower part directly connecting the first lower part and the second lower part, wherein the third lower part is in a direction perpendicular to the optical axis direction. It may overlap with the base.

The third lower side portion may be positioned on an imaginary plane that straightly connects the first lower side portion and the second lower side portion.

A length of the third lower side portion in the optical axis direction may be constant from the first lower side portion to the second lower side portion.

The lens driving device may include: a first adhesive portion positioned between the first lower portion and the base; a second adhesive portion positioned between the second lower portion and the base; and a third adhesive portion positioned between the third lower portion and the base.

The lens driving device may include a substrate at least partially disposed between the base and the housing and electrically connected to the third driving unit; and a current unit directly contacting the third lower portion and the substrate.

The lens driving device further includes a substrate, at least a portion of which is disposed between the base and the housing and electrically connected to the third driving unit, wherein the third lower side unit is positioned lower than the substrate and the third driving unit. can do.

The lens driving device further includes a substrate at least partially disposed between the base and the housing and electrically connected to the third driving unit, wherein the substrate includes a body portion positioned between the base and the housing; , A terminal portion bent and extended from the body portion, wherein the first connection portion is connected to an outer end portion of the first lower portion, and the terminal portion may be positioned outside the outer end portion of the first lower portion.

The base is recessed inward from an outer side surface and includes an accommodation groove having a shape corresponding to at least a portion of the third lower side portion, and the receiving groove may receive at least a portion of the third lower side portion.

The lens driving device includes a bobbin located inside the housing; a first driving unit located on the bobbin and facing the second driving unit; and a second support member coupled to the bobbin and the housing and elastically supporting the bobbin with respect to the housing.

The second support member includes a first upper support unit electrically connected to one end of the first drive unit, and a second upper support unit spaced apart from the first upper support unit and electrically connected to the other end of the first drive unit. The first support member includes a first lateral support unit electrically connecting the first upper support unit and the substrate, and spaced apart from the first lateral support unit and between the second upper support unit and the substrate. It may include a second lateral support unit that electrically connects.

The first lower part, the second lower part, and the third lower part may be integrally formed.

The camera module according to the present embodiment includes a base; a housing positioned above the base; a third driving unit located on the base; a second driving unit located in the housing and facing the third driving unit; and a first support member coupled to the base and the housing, wherein the first support member includes a lower coupling portion coupled to the base, an upper coupling portion coupled to the housing, the lower coupling portion, and the upper coupling portion coupled to the housing. A first connection part connecting the upper coupling part and a second connection part connecting the lower coupling part and the upper coupling part and spaced apart from the first connection part, wherein the lower coupling part includes a first lower coupling part connected to the first connection part. It includes a side part, a second lower part connected to the second connection part, and a third lower part directly connecting the first lower part and the second lower part, wherein the third lower part is formed in a direction perpendicular to the optical axis. It can overlap with the base.

The optical device according to the present embodiment includes a base; a housing positioned above the base; a third driving unit located on the base; a second driving unit located in the housing and facing the third driving unit; and a first support member coupled to the base and the housing, wherein the first support member includes a lower coupling portion coupled to the base, an upper coupling portion coupled to the housing, the lower coupling portion, and the upper coupling portion coupled to the housing. A first connection part connecting the upper coupling part and a second connection part connecting the lower coupling part and the upper coupling part and spaced apart from the first connection part, wherein the lower coupling part includes a first lower coupling part connected to the first connection part. It includes a side part, a second lower part connected to the second connection part, and a third lower part directly connecting the first lower part and the second lower part, wherein the third lower part is formed in a direction perpendicular to the optical axis. It can overlap with the base.

Through this embodiment, space constraints on the design of the connection part (leg) of the hand shake compensation spring are reduced.

In addition, according to the present embodiment, the bonding area between the image stabilization spring and the base is enlarged, so workability and reliability can be improved.

In addition, according to the present embodiment, penetration of solder balls due to soldering between the pad of the board and the image stabilization spring can be prevented from leading to a short circuit.

In addition, according to the present embodiment, even when the adhesive leaks out due to excessive adhesive when the base and the substrate are bonded, the leaked adhesive invades between the hand-shake compensating spring and the receiving groove of the base, so that defects can be prevented.

In addition, according to the present embodiment, the soldering area between the image stabilization spring and the board can be expanded.

1 is a perspective view of a lens driving device according to this embodiment.
2 is an exploded perspective view of the lens driving device according to the present embodiment.
FIG. 3 is a side view of a part of the lens driving device according to the present embodiment as viewed from the direction A of FIG. 1 .
FIG. 4 is a side view of a part of the lens driving device according to the present embodiment as viewed from the direction B of FIG. 1 .

Hereinafter, some embodiments of the present invention will be described through exemplary drawings. In describing the reference numerals for the components of each drawing, the same numerals indicate the same components as much as possible, even if they are displayed on different drawings. In addition, in describing an embodiment of the present invention, if it is determined that a detailed description of a related known configuration or function hinders understanding of the embodiment of the present invention, the detailed description will be omitted.

Also, terms such as first, second, A, B, (a), and (b) may be used to describe components of an embodiment of the present invention. These terms are only used to distinguish the component from other components, and the nature, order, or order of the corresponding component is not limited by the term. When an element is described as being “connected,” “coupled to,” or “connected” to another element, the element may be directly connected, coupled, or connected to the other element, but not between the element and the other element. It should be understood that another component may be “connected”, “coupled” or “connected” between elements.

The "optical axis direction" used below is defined as the optical axis direction of the lens module coupled to the lens driving device. Meanwhile, "optical axis direction" may be used interchangeably with a vertical direction, a z-axis direction, and a vertical direction.

The "auto focus function" used below refers to focusing on a subject by adjusting the distance to the image sensor by moving the lens module in the optical axis direction according to the distance of the subject so that a clear image of the subject can be obtained from the image sensor. defined as a function. Meanwhile, “auto focus” may be used interchangeably with “auto focus (AF)”.

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

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

The optical device according to the present embodiment includes a mobile phone, a mobile phone, a smart phone, a portable smart device, a digital camera, a laptop computer, a digital broadcasting terminal, a personal digital assistant (PDA), and a portable multimedia player (PMP). ), navigation, etc., but is not limited thereto, and any device for capturing images or photos is possible.

The optical device according to the present embodiment includes a main body (not shown), a display unit (not shown) disposed on one surface of the main body to display information, and a camera module (not shown) installed in the main body to take images or photos. It may include a camera (not shown) having a time).

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

The camera module further includes a lens driving device (not shown), a lens module (not shown), an infrared cut filter (not shown), a printed circuit board (not shown), an image sensor (not shown), and a controller (not shown). can do.

The lens module may include at least one lens. The lens module may include a lens and a lens barrel. The lens module may include one or more lenses (not shown) and a lens barrel accommodating the one or more lenses. However, one configuration of the lens module is not limited to the lens barrel, and any holder structure capable of supporting one or more lenses may be used. The lens module may be coupled to the lens driving device and move together with the lens driving device. The lens module, as an example, may be coupled to the inside of the lens driving device. The lens module may be screw-coupled with the lens driving device as an example. The lens module, for example, may be coupled to the lens driving device by an adhesive (not shown). Meanwhile, light passing through the lens module may be irradiated to the image sensor.

The infrared cut filter may block light in the infrared region from being incident on the image sensor. An infrared cut filter may be positioned between the lens module and the image sensor as an example. The infrared cut filter may be located on a holder member (not shown) provided separately from the base 500 . However, the infrared filter may be mounted in the through hole 510 formed in the center of the base 500. The infrared filter may be formed of, for example, a film material or a glass material. As an example, the infrared filter may be formed by coating an infrared blocking coating material on a flat plate-shaped optical filter such as a cover glass for protecting an imaging surface or a cover glass.

The printed circuit board may support the lens driving device. An image sensor may be mounted on the printed circuit board. As an example, an image sensor may be located inside the upper surface of the printed circuit board, and a sensor holder (not shown) may be located outside the upper surface of the printed circuit board. A lens driving device may be positioned above the sensor holder. Alternatively, the lens driving device may be located outside the upper surface of the printed circuit board, and the image sensor may be located inside the upper surface of the printed circuit board. Through such a structure, light passing through the lens module accommodated inside the lens driving device may be irradiated to the image sensor mounted on the printed circuit board. The printed circuit board may supply power to the lens driving device. Meanwhile, a control unit for controlling the lens driving device may be located on the printed circuit board.

The image sensor may be mounted on a printed circuit board. The image sensor may be positioned such that an optical axis coincides with the lens module. Through this, the image sensor may obtain light passing through the lens module. The image sensor may output irradiated light as an image. The image sensor may be, for example, a charge coupled device (CCD), a metal oxide semi-conductor (MOS), a CPD, and a CID. However, the type of image sensor is not limited thereto.

The control unit may be mounted on a printed circuit board. The control unit may be located outside the lens driving device. However, the control unit may be located inside the lens driving device. The control unit may control the direction, strength, and amplitude of the current supplied to each component constituting the lens driving device. The controller may perform at least one of an auto focus function and a hand shake correction function of the camera module by controlling the lens driving device. That is, the controller may control the lens driving device to move the lens module in the direction of the optical axis, move or tilt the lens module in a direction perpendicular to the direction of the optical axis. Furthermore, the controller may perform feedback control of the auto focus function and hand shake correction function. In more detail, the control unit receives the position of the bobbin 210 or the housing 310 detected by the sensor unit (not shown) and controls power or current applied to the first driving unit 220 to the third driving unit 420. Thus, a more precise autofocus function and hand shake compensation function may be provided.

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

1 is a perspective view of a lens driving device according to the present embodiment, FIG. 2 is an exploded perspective view of the lens driving device according to the present embodiment, and FIG. 3 is a partial configuration of the lens driving device according to the present embodiment. FIG. 4 is a side view of a part of the lens driving device according to the present embodiment as viewed from the B direction in FIG. 1 .

1 to 4, the lens driving device according to the present embodiment includes a cover member 100, a first mover 200, a second mover 300, a stator 400, and a base 500. , It may include a support member 600 and a sensor unit. However, in the lens driving device according to the present embodiment, the cover member 100, the first mover 200, the second mover 300, the stator 400, the base 500, the support member 600, and the sensor Any one or more of the parts may be omitted. In particular, the sensor unit may be omitted as a configuration for an auto focus feedback function and/or an image stabilization feedback function.

The cover member 100 may form the exterior of the lens driving device. The cover member 100 may have a hexahedral shape with an open bottom. However, it is not limited thereto.

The cover member 100 may be formed of a metal material as an example. More specifically, the cover member 100 may be provided with a metal plate material. In this case, the cover member 100 may block electromagnetic interference (EMI). Due to such characteristics of the cover member 100, the cover member 100 may be referred to as an EMI shield can. The cover member 100 may block radio waves generated outside the lens driving device from being introduced into the cover member 100 . In addition, the cover member 100 may block radio waves generated inside the cover member 100 from being emitted to the outside of the cover member 100 . However, the material of the cover member 100 is not limited thereto.

The cover member 100 may include an upper plate 101 and a side plate 102 . The cover member 100 may include a top plate 101 and a side plate 102 extending downward from an outside of the top plate 101 . The lower end of the side plate 102 of the cover member 100 may be mounted on the base 500 . The inner surface of the cover member 100 may be mounted on the base 500 in close contact with part or all of the side surface of the base 500 . The first mover 200, the second mover 300, the stator 400, and the support member 600 may be positioned in the inner space formed by the cover member 100 and the base 500. Through such a structure, the cover member 100 can protect internal components from external impact and at the same time prevent penetration of external contaminants. However, it is not limited thereto, and the lower end of the side plate 102 of the cover member 100 may be directly coupled to the printed circuit board located on the lower side of the base 500.

The cover member 100 may include an opening 110 formed on the top plate 101 to expose the lens module. The opening 110 may have a shape corresponding to that of the lens module. The size of the opening 110 may be larger than the diameter of the lens module so that the lens module can be assembled through the opening 110 . Meanwhile, light introduced through the opening 110 may pass through the lens module. In this case, the light passing through the lens module may be acquired as an image by an image sensor.

The first mover 200 may be combined with a lens module, which is a component of a camera module (however, the lens module may also be described as a component of a lens driving device). The first mover 200 may accommodate the lens module inside. An outer circumferential surface of the lens module may be coupled to an inner circumferential surface of the first mover 200 . The first mover 200 may move integrally with the lens module through interaction with the second mover 300 and/or the stator 400 . That is, the first mover 200 can move together with the lens module.

The first mover 200 may include a bobbin 210 and a first driving unit 220 . The first mover 200 may include a bobbin 210 coupled to the lens module. The first mover 200 may include a first drive unit 220 located on the bobbin 210 and moved by electromagnetic interaction with the second drive unit 320 .

The bobbin 210 may be coupled to the lens module. More specifically, the outer circumferential surface of the lens module may be coupled to the inner circumferential surface of the bobbin 210 . The first driving unit 220 may be coupled to the bobbin 210 . An upper portion of the bobbin 210 may be coupled to the upper support member 610 . The bobbin 210 may be located inside the housing 310 . The bobbin 210 may move relative to the housing 310 in the optical axis direction.

The bobbin 210 may include a lens accommodating part 211 , a first driving part coupling part 212 and an upper coupling part 213 .

The bobbin 210 may include an upper and lower open type lens accommodating part 211 inside. The bobbin 210 may include a lens accommodating portion 211 formed inside. A lens module may be coupled to the lens accommodating part 211 . A screw thread having a shape corresponding to a screw thread formed on an outer circumferential surface of the lens module may be formed on the inner circumferential surface of the lens accommodating portion 211 . That is, the lens accommodating part 211 may be screwed to the lens module. An adhesive may be interposed between the lens module and the bobbin 210 . At this time, the adhesive may be an epoxy cured by ultraviolet (UV) or heat. That is, the lens module and the bobbin 210 may be bonded by UV curing epoxy and/or heat curing epoxy.

The bobbin 210 may include a first driving unit coupling part 212 where the first driving unit 220 is disposed. The first driving unit coupling part 212 may be integrally formed with the outer surface of the bobbin 210 . In addition, the first drive unit coupling portion 212 may be formed continuously along the outer surface of the bobbin 210 or may be formed spaced apart at predetermined intervals. As an example, the first driving unit coupling part 212 may be formed by recessing a part of the outer surface of the bobbin 210 to correspond to the shape of the first driving unit 220 . In this case, the coil of the first driving unit 220 may be directly wound around the first driving unit coupling unit 212 . As a modified example, the first driving unit coupling part 212 may be formed in an upper or lower open type. At this time, the coil of the first driving unit 220 may be inserted and coupled to the first driving unit coupler 212 through an open portion in a pre-wound state.

The bobbin 210 may include an upper coupling portion 213 coupled to the upper support member 610 . The upper coupling portion 213 may be coupled to the inner portion 612 of the upper support member 610 . As an example, a protrusion (not shown) of the upper coupling portion 213 may be inserted into a groove or hole (not shown) of the inner portion 612 of the upper support member 610 and coupled thereto. At this time, the protrusion of the upper coupling portion 213 may be heat-sealed while being inserted into the hole of the inner portion 612 to fix the upper support member 610 .

The first driving unit 220 may be located on the bobbin 210 . The first driving unit 220 may be positioned to face the second driving unit 320 . The first driving unit 220 may move the bobbin 210 relative to the housing 310 through electromagnetic interaction with the second driving unit 320 .

The first driving unit 220 may include a coil. In this case, the first driving unit 220 may be referred to as an auto focus coil part. In addition, the first driving unit 220 may be referred to as a 'first coil unit' to distinguish it from other configurations provided as a coil unit. The AF coil unit may be located on the bobbin 210 . The AF coil unit may be guided to the first driving unit coupling unit 212 and wound around the outer surface of the bobbin 210 . Also, as another embodiment, the AF coil unit may be provided with four independent coils and disposed on the outer surface of the bobbin 210 such that two adjacent coils form a 90° angle to each other. The AF coil unit may face the driving magnet unit of the second driving unit 320 . That is, the AF coil unit may be disposed to electromagnetically interact with the driving magnet unit.

The AF coil unit may include a pair of lead wires (not shown) for power supply. In this case, the pair of lead wires of the AF coil unit may be electrically connected to the first and second upper support units 614 and 615 , which are divided components of the upper support member 610 . That is, the AF coil unit may receive power through the upper support member 610 . Meanwhile, when power is supplied to the AF coil unit, an electromagnetic field may be formed around the AF coil unit. As a modified example, the first driving unit 220 may include a magnet unit. In this case, the second driving unit 320 may include a coil unit.

The second mover 300 may move for a hand shake correction function. The second mover 300 is positioned opposite to the first mover 200 outside the first mover 200 and moves the first mover 200 or interacts with the first mover 200. can move together. The second mover 300 may be movably supported by the stator 400 and/or the base 500 located on the lower side. The second mover 300 may be located in the inner space of the cover member 100 .

The second mover 300 may include a housing 310 and a second driving unit 320 . The second mover 300 may include a housing 310 positioned outside the bobbin 210 . In addition, the second mover 300 may include a second drive unit 320 positioned opposite to the first drive unit 220 and fixed to the housing 310 .

At least a portion of the housing 310 may be formed in a shape corresponding to the inner surface of the cover member 100 . In particular, the outer surface of the housing 310 may be formed in a shape corresponding to the inner surface of the side plate 102 of the cover member 100 . The housing 310 may have, for example, a hexahedral shape including four side surfaces. However, the shape of the housing 310 may be provided in any shape that can be disposed inside the cover member 100 . The housing 310 is formed of an insulating material and may be formed as an injection molding product in consideration of productivity.

The housing 310 may be located above the base 500 . The housing 310 is a moving part for driving the OIS and may be spaced apart from the cover member 100 by a predetermined distance. However, in the AF model, the housing 310 may be fixed on the base 500. Alternatively, in the AF model, the housing 310 may be omitted and the second driving unit 320 may be fixed to the cover member 100 . An upper support member 610 may be coupled to an upper portion of the housing 310 .

The housing 310 may include an inner space 311 , a second driving part coupling part 312 and an upper coupling part 313 .

The upper and lower sides of the housing 310 are open to accommodate the first mover 200 movably in the vertical direction. The housing 310 may include an upper and lower open inner space 311 inside. The bobbin 210 may be movably disposed in the inner space 311 . That is, the inner space 311 may be provided in a shape corresponding to the bobbin 210 . In addition, the inner circumferential surface of the housing 310 forming the inner space 311 may be spaced apart from the outer circumferential surface of the bobbin 210 .

The housing 310 may include a second driving unit coupling part 312 formed in a shape corresponding to the second driving unit 320 on a side surface and accommodating the second driving unit 320 . That is, the second driving unit coupling part 312 may accommodate and fix the second driving unit 320 . The second driving unit 320 may be fixed to the second driving unit coupling part 312 by an adhesive (not shown). Meanwhile, the second driving unit coupling part 312 may be located on an inner circumferential surface of the housing 310 . In this case, there is an advantage in electromagnetic interaction with the first driving unit 220 located inside the second driving unit 320 . In addition, the second driving unit coupling part 312, as an example, may have an open bottom. In this case, there is an advantage in electromagnetic interaction between the third driving unit 420 and the second driving unit 320 located below the second driving unit 320 . As an example, four second driving unit couplers 312 may be provided. The second driving unit 320 may be coupled to each of the four second driving unit coupling parts 312 . Meanwhile, the second driving part coupling part 312 may be formed on an edge part where adjacent sides of the housing 310 meet. Alternatively, the second driving unit coupling part 312 may be formed on a side surface of the housing 310 .

The housing 310 may include an upper coupling portion 313 coupled to the upper support member 610 . The upper coupling portion 313 may be coupled to the outer portion 611 of the upper support member 610 . As an example, the protrusion of the upper coupling portion 313 may be inserted into and coupled to a groove or hole (not shown) of the outer portion 611 of the upper support member 610 . At this time, the protrusion of the upper coupling portion 313 may be heat-sealed while being inserted into the hole of the outer portion 611 to fix the upper support member 610 .

The housing 310 may include an upper stopper 315 protruding from one surface. The housing 310 may include an upper stopper 315 protruding upward from the upper surface. The upper stopper 316 may protrude upward from the housing 310 . The upper stopper 316 may overlap the cover member 100 in a vertical direction. When the housing 310 moves upward through such a structure, the upper stopper 316 and the cover member 100 contact each other, so that the movement of the housing 310 can be restricted. That is, the upper stopper 316 may limit the upper limit of movement to the mechanism of the housing 310 .

The second driving unit 320 may be positioned to face the first driving unit 220 . The second driving unit 320 may move the first driving unit 220 through electromagnetic interaction with the first driving unit 220 . The second driving unit 320 may include a magnet unit. At this time, the second driving unit 320 is a magnet unit for driving and may be referred to as a 'driving magnet unit'. The driving magnet unit may be located in the housing 310 . The driving magnet unit may face the AF coil unit. The driving magnet unit may face the OIS coil unit. The driving magnet unit may be fixed to the second driving unit coupling unit 312 of the housing 310 . As an example, as shown in FIG. 2 , the driving magnet unit may be disposed in the housing 310 such that four magnets are independently provided so that two adjacent magnets form a 90° angle to each other. That is, the drive magnet unit can promote efficient use of the internal volume through magnets mounted on four sides of the housing 310 at equal intervals. Also, the driving magnet unit may be attached to the housing 310 by an adhesive. However, it is not limited thereto. Meanwhile, as described above, the first driving unit 220 may include a magnet unit and the second driving unit 320 may include a coil unit.

The stator 400 may be located below the second mover 300 . The stator 400 may face the second mover 300 . The stator 400 may movably support the second mover 300 . The stator 400 can move the second mover 300 . At this time, the first mover 200 can also move together with the second mover 300 . In addition, through-holes 413 and 421 corresponding to the lens module may be located at the center of the stator 400 .

The stator 400 may include, for example, a substrate 410 and a third driving unit 420 . The stator 400 may include a substrate 410 positioned between the third driving unit 420 and the base 500 . In addition, the stator 400 may include a third driving unit 420 positioned opposite to the lower side of the second driving unit 320 .

The substrate 410 may include a flexible printed circuit board (FPCB), which is a flexible circuit board. The substrate 410 may be positioned between the base 500 and the housing 310 . At least a portion of the substrate 410 may be positioned between the base 500 and the housing 310 . The substrate 410 may be positioned between the third driving unit 420 and the base 500 . The substrate 410 may supply power to the third driving unit 420 . The substrate 410 may supply power to the first driving unit 220 or the second driving unit 320 . As an example, the substrate 410 may supply power to the AF coil unit through the side support member 630 and the upper support member 610 . In addition, the substrate 410 may supply power to the AF sensor unit (not shown) through the side support member 630 and the upper support member 610 .

The substrate 410 may include, for example, a body portion 411 , a terminal portion 412 , and a through hole 413 . The substrate 410 may include a body portion 411 positioned between the base 500 and the housing 310 . The substrate 410 may include a terminal portion 412 that is bent downward from the body portion 411 and exposed to the outside. The substrate 410 may include a through hole 413 through which light passing through the lens module passes.

The body portion 411 may be located between the base 500 and the housing 310 . A third driving unit 420 may be disposed on the body 411 . The body portion 411 may be energized with the third driving portion 420 . A through hole 413 may be formed in the body portion 411 .

The terminal portion 412 may be bent and extended from the body portion 411 . The terminal portion 4120 may be exposed to the outside by being bent downward from the body portion 411. At least a portion of the terminal portion 412 may be exposed to the outside and may be connected to an external power source, through which power is applied to the board 410. can be supplied.

The terminal part 412 may be located outside the outer distal end of the first lower part 640 . The terminal portion 412 may be spaced apart from the outer distal end of the first lower portion 640 by a minimum distance. The terminal portion 412 may also be located outside the outer distal end of the second lower portion 650 . Meanwhile, the terminal portion 412 may be positioned at a minimum distance from the outer end portion of the second lower portion 650 . In this embodiment, when the width of the first lower part 640 in the horizontal direction is reduced through such a structure, the width of the terminal part 412 in the horizontal direction may be increased. That is, in this embodiment, the spatial restriction of the design space of the circuit pattern of the printed circuit board formed on the terminal unit 412 can be reduced.

The third driving unit 420 may move the second driving unit 320 through electromagnetic interaction. The third driving unit 420 may include a coil unit. In this case, the third driving unit 420 may be referred to as an OIS coil part (Optical Image Stabilization coil part). Also, the third driving unit 420 may be referred to as a 'second coil unit' to distinguish it from the first coil unit. Of course, the coil unit of the third driving unit 420 may be referred to as a first coil unit, and the coil unit of the first driving unit 220 may be referred to as a second coil unit. The OIS coil unit may be located on the substrate 410 . The OIS coil unit may be located on the base 500 . The OIS coil unit may be located between the base 500 and the housing 310 . The OIS coil unit may face the driving magnet unit. When power is applied to the OIS coil unit, the second driving unit 320 and the housing 310 to which the second driving unit 320 is fixed may move integrally by the interaction between the OIS coil unit and the driving magnet unit.

The OIS coil unit may be formed of a patterned coil (FP coil, fine pattern coil) mounted on the substrate 410 . In this case, it can be effective in terms of miniaturization (reducing the height in the z-axis direction, which is the optical axis direction) of the lens driving device. The OIS coil unit, for example, may be formed to minimize interference with the OIS sensor unit 700 located on the lower side. The OIS coil unit may be positioned so as not to overlap with the OIS sensor unit 700 in the vertical direction.

The third driving unit 420 may have a through hole 421 through which light of the lens module passes. The through hole 421 may have a diameter corresponding to that of the lens module. The through hole 421 of the third driving unit 420 may have a diameter corresponding to that of the through hole 413 of the substrate 410 . The through hole 421 of the third driving unit 420 may have a diameter corresponding to that of the through hole 510 of the base 500 . The through hole 421 may be circular as an example. However, it is not limited thereto.

The base 500 may be located below the bobbin 210 . The base 500 may be located on the lower side of the housing 310 . The base 500 may support the second mover 300 . A printed circuit board may be positioned below the base 500 . The base 500 may perform a sensor holder function to protect an image sensor mounted on a printed circuit board.

The base 500 may include a through hole 510, an extension part 520, a sensor mounting part 530, a receiving groove 540, and a foreign matter collecting part (not shown).

The base 500 may include a through hole 510 formed at a position corresponding to the lens accommodating portion 211 of the bobbin 210 . Meanwhile, an infrared ray filter may be coupled to the through hole 510 of the base 500 . However, an infrared filter may be coupled to a separate sensor holder disposed below the base 500.

The base 500 may include an extension 520 extending upward from the top surface. The extension part 520 may protrude upward from the top surface of the base 500 . At least a portion of the housing 310 may be located inside the extension part 520 . Through this structure, movement of the housing 310 in a horizontal direction (direction perpendicular to the optical axis direction) can be restricted. That is, the extension part 520 of the base 500 may function as a stopper for the lateral movement of the housing 310 . A damper (not shown) may be applied between the extension part 520 of the base 500 and the housing 310 . The damper may prevent a resonance phenomenon that may occur in auto focus feedback control and/or hand shake compensation feedback control.

The base 500 may include a sensor mounting portion 530 to which the OIS sensor unit 700 is coupled. That is, the OIS sensor unit 700 may be mounted on the sensor mounting unit 530 . At this time, the OIS sensor unit 700 may sense the horizontal movement or tilt of the housing 310 by sensing the second driving unit 320 coupled to the housing 310 . As an example, two sensor mounting units 530 may be provided. An OIS sensor unit 700 may be positioned on each of the two sensor mounting units 530 . In this case, the OIS sensor unit 700 may include a first-axis sensor 710 and a second-axis sensor 720 disposed to detect both motions of the housing 310 in the x-axis and y-axis directions. there is.

The base 500 may include an accommodation groove 540 that is recessed inward from an outer side and has a shape corresponding to at least a portion of the third lower portion 660 . The receiving groove 540 may be recessed inward from the outer side of the base 500 . The receiving groove 540 may have a shape corresponding to at least a part of the third lower part 660 . The accommodating groove 540 may accommodate at least a portion of the third lower portion 660 . An adhesive member is applied to the receiving groove 540 so that the lower coupling part 631 of the lateral support member 630 can be coupled.

The base 500 may include a foreign matter collection unit for collecting foreign matter introduced into the cover member 100 . The foreign matter collecting unit is located on the upper surface of the base 500 and may collect foreign matter on the inner space formed by the cover member 100 and the base 500 including adhesive materials.

The support member 600 may connect any two or more of the first mover 200 , the second mover 300 , the stator 400 and the base 500 . The support member 600 elastically connects any two or more of the first mover 200, the second mover 300, the stator 400, and the base 500 to allow relative movement between the respective components. support to make this possible. At least a portion of the support member 600 may be formed to have elasticity. In this case, the support member 600 may be referred to as an elastic member or a spring.

The support member 600 may include an upper support member 610 and a side support member 630 as an example. In this case, the upper support member 610 may be referred to as 'auto focus spring', 'AF elastic member', and the like. In addition, the lateral support member 630 may be referred to as a 'hand shake compensating spring', an 'elastic member for OIS', and the like. In addition, the support member 600 may further include a lower support member (not shown) as an example.

The upper support member 610 may be coupled to the bobbin 210 and the housing 310 . The upper support member 610 may elastically support the bobbin 210 relative to the housing 310 . The upper support member 610 may include, for example, an outer portion 611 , an inner portion 612 , and a connection portion 613 . The upper support member 610 includes an outer portion 611 coupled to the housing 310, an inner portion 612 coupled to the bobbin 210, and a connecting portion elastically connecting the outer portion 611 and the inner portion 612 ( 613) may be included.

The upper support member 610 may be connected to an upper portion of the first mover 200 and an upper portion of the second mover 300 . In more detail, the upper support member 610 may be coupled to the top of the bobbin 210 and the top of the housing 310 . The inner portion 612 of the upper support member 610 is coupled to the upper coupling portion 213 of the bobbin 210, and the outer portion 611 of the upper support member 610 is coupled to the upper coupling portion 313 of the housing 310. can be combined with

The upper support member 610 is, for example, provided separately as a pair and may be used to supply power to the AF coil unit and the like. The upper support member 610 may include a first upper support unit 614 and a second upper support unit 615 spaced apart from each other. The first upper support unit 614 may be electrically connected to one end of the AF coil unit, and the second upper support unit 615 may be electrically connected to the other end of the AF coil unit. The upper support member 610 may supply power to the AF coil unit through such a structure. The upper support member 610 may receive power from the substrate 410 through the side support member 630 as an example. The upper support member 610 may be provided by being separated into six as an example. At this time, four of the six upper support members 610 may be energized with the AF sensor unit, and the other two may be energized with the AF coil unit.

The lower support member may include, for example, an outer portion, an inner portion, and a connecting portion. The lower support member may include an outer portion coupled to the housing 310, an inner portion coupled to the bobbin 210, and a connecting portion elastically connecting the outer portion and the inner portion. The lower support member may be integrally formed as an example. However, it is not limited thereto. As a modified example, the lower support members may be provided separately as a pair and used to supply power to the AF coil unit and the like.

The lateral support member 630 may be coupled to the base 500 and the housing 310 . The lateral support member 630 may elastically support the housing 310 with respect to the base 500 . One side of the side support member 630 may be coupled to the stator 400 and/or the base 500 and the other side may be coupled to the upper support member 610 and/or the housing 310 . As an example, the side support member 630 may have one side coupled to the base 500 and the other side coupled to the housing 310 . Also, in another embodiment, the side support member 630 may have one side coupled to the stator 400 and the other side coupled to the upper support member 610 . Through this structure, the lateral support member 630 elastically moves the second mover 300 relative to the stator 400 so that the second mover 300 can move or tilt in the horizontal direction. support The side support member 630 may include a leaf spring as an example. Alternatively, the lateral support member 630 may include a plurality of wires as a modified example. Meanwhile, the side support member 630 may be integrally formed with the upper support member 610 .

The side support member 630 may be electrically connected to the substrate 410 at one end and electrically connected to the upper support member 610 at the other end. As an example, four side support members 630 may be provided. That is, the lateral support member 630 may include first to fourth lateral support units 636, 637, 638, and 639 spaced apart from each other. The lateral support member 630 may include a first lateral support unit 636 positioned on a first side surface of the base 500 . The lateral support member 630 may include a second lateral support unit 637 positioned on a second side surface adjacent to the first side surface. The lateral support member 630 may include a third lateral support unit 638 positioned on a third side surface adjacent to the second side surface. The lateral support member 630 may include a fourth lateral support unit 639 positioned on a fourth side surface adjacent to the first side surface and the third side surface. That is, the first to fourth lateral support units 636, 637, 638, and 639 may be successively disposed adjacent to each other.

The lateral support member 630 may include a lower coupling portion 631 , an upper coupling portion 632 , a first connection portion 633 , and a second connection portion 634 . The lateral support member 630 may include a lower coupling part 631 coupled to the base 500 . The lateral support member 630 may include an upper coupling portion 632 coupled to the housing 310 . The lateral support member 630 may include a first connection portion 633 connecting the lower coupling portion 631 and the upper coupling portion 632 . The lateral support member 630 may include a second connection part 634 that connects the lower coupling part 631 and the upper coupling part 632 and is spaced apart from the first connection part 633 . In this case, the first connection part 633 may be connected to the outer end part of the first lower part 640 . Also, the second connection part 634 may be connected to an outer distal end of the second lower part 650 .

The lower coupling part 631 may include a first lower part 640 , a second lower part 650 , and a third lower part 660 . The lower coupling part 631 may include a first lower part 640 connected to the first connection part 633 . The lower coupling part 631 may include a second lower part 650 connected to the second connection part 634 . The lower coupling part 631 may include a third lower part 660 that directly connects the first lower part 640 and the second lower part 650 .

The third lower part 660 may overlap the base 500 in a direction perpendicular to the optical axis direction. Furthermore, the entire third lower portion 660 may overlap the base 500 in a direction perpendicular to the optical axis direction. That is, the third lower side part 660 may be located below the substrate 410 and the third driving part 420 disposed on the upper surface of the base 500 . Through this structure, since the third lower part 660 and the base 500 can be directly fixed, a structure in which only the first lower part 640 and the second lower part 650 are fixed to the base 500 and In comparison, the fixing force between the lateral support member 630 and the base 500 can be improved. In addition, since the third lower part 660 is located below the first connection part 633 and the second connection part 634, the design space of the first connection part 633 and the second connection part 634 can be secured. Meanwhile, in this structure, the third lower portion 660 and the substrate 410 may be directly energized. In more detail, a power supply unit (not shown) may be coupled to the inner side of the upper central portion of the third lower side portion 660 and the substrate 410 so that the third lower portion 660 and the substrate 410 may be energized. The substrate 410 may include an insertion hole between the body portion 411 and the terminal portion 412 , and the lower coupling portion 631 may be disposed to pass through the insertion hole of the substrate 410 . Through this structure, the current unit can be coupled to the inside of the third lower part 660 of the lower coupling part 631 and the outside of the body part 411 of the substrate 410 . In this case, since the energizing unit located in the upper center of the third lower part 660 is spaced apart from the energizing member that energizes the substrate 410 and the third driving part 420, a short circuit phenomenon between the energizing unit and the energizing member may occur. can be prevented In this case, a current member that conducts electricity between the substrate 410 and the third driving unit 420 may be located inside the first connection unit 633 and/or the second connection unit 634 .

The third lower side portion 660 may be positioned on an imaginary plane that straightly connects the first lower side portion 640 and the second lower side portion 650 . A part of the third lower side portion 660 may be positioned on an imaginary plane that straightly connects the first lower side portion 640 and the second lower side portion 650 . In addition, the entire third lower side portion 660 may be located in an imaginary plane that straightly connects the first lower side portion 640 and the second lower side portion 650 . In this case, the size of the third lower part 660 may be smaller than the size of the virtual plane.

A length of the third lower side portion 660 in the optical axis direction may be constant from the first lower side portion 640 side to the second lower side portion 650 side. Meanwhile, the length of the third lower part 660 in the optical axis direction may correspond to the lengths of the first lower part 640 and the second lower part 650 in the optical axis direction. Alternatively, the length of the third lower part 660 in the optical axis direction may be smaller than the lengths of the first lower part 640 and the second lower part 650 in the optical axis direction.

The third lower portion 660 may directly contact the substrate 410 through the current unit. In this case, the conducting unit may include a solder ball formed through soldering. Soldering is performed between the upper end of the third lower side portion 660 and the lower portion of the substrate 410 so that the third lower side portion 660 and the substrate 410 may be electrically connected. Through this structure, the solder balls that conduct electricity between the third lower side portion 660 and the substrate 410 may be spaced apart from the solder balls that conduct electricity between the substrate 410 and the third driving unit 420 . Therefore, in the present embodiment, a phenomenon in which one solder ball bounces on another solder ball and both are shorted can be minimized.

The lower coupling part 631 of the lateral support member 630 may be accommodated in the receiving groove 540 of the base 500 . The lower coupling part 631 of the lateral support member 630 may be adhesively fixed to the base 500 by an adhesive member (not shown). More specifically, the first lower side portion 640 may be adhered to the base 500 by a first adhesive portion (not shown). The second lower part 650 may be attached to the base 500 by a second adhesive part (not shown). The third lower part 660 may be attached to the base 500 by a third adhesive part (not shown). The first adhesive portion may be located between the first lower portion 640 and the base 500 . The second adhesive portion may be positioned between the second lower portion 650 and the base 500 . The third adhesive portion may be located between the third lower side portion 660 and the base 500 .

The first lateral support unit 636 may electrically connect the first upper support unit 614 and the substrate 410 . Also, the third side support unit 638 may electrically connect the second upper support unit 615 and the substrate 410 . Through this structure, the upper support member 610 may be electrically connected to the substrate 410 . Furthermore, the substrate 410 may supply power to the AF coil unit connected to the upper support member 610 . The first lateral support unit 636 may be energized through the substrate 410 and a first energizing unit (not shown). The third lateral support unit 638 may be energized through the substrate 410 and a second energizing unit (not shown). The first and second conducting units may be solder balls formed by soldering.

The side support member 630 or the upper support member 610 may include, for example, a shock absorber (not shown) for shock absorption. The shock absorber may be provided on any one or more of the lateral support member 630 and the upper support member 610 . The shock absorber may be a separate member such as a damper. In addition, the shock absorber may be realized by changing the shape of at least one part of the side support member 630 and the upper support member 610 .

The sensor unit may be used for at least one of auto focus feedback and hand shake correction feedback. The sensor unit may detect the position or movement of one or more of the first mover 200 and the second mover 300 .

The sensor unit may include an AF sensor unit and an OIS sensor unit 700 as an example. The AF sensor unit may provide information for AF feedback by sensing a relative vertical movement of the bobbin 210 with respect to the housing 310 . The OIS sensor unit 700 may sense horizontal motion or tilt of the second mover 300 and provide information for OIS feedback.

The AF sensor unit may include, for example, an AF sensor (not shown), a sensor substrate (not shown), and a sensing magnet (not shown).

The AF sensor may be disposed in the housing 310 . The AF sensor may be disposed above the housing 310 . At this time, the sensing magnet may be disposed above the bobbin 210 . The AF sensor may be mounted on a sensor substrate. The AF sensor may be disposed in the housing 310 while being mounted on a sensor substrate. The AF sensor may detect the position or movement of the bobbin 210 . As an example, the AF sensor may detect the position or movement of the bobbin 210 by sensing a sensing magnet disposed on the bobbin 210 . As an example, the AF sensor may be a hall sensor that senses the magnetic force of the sensing magnet. However, it is not limited thereto.

An AF sensor may be mounted on the sensor substrate. A substrate for a sensor may be disposed on the housing 310 . The sensor substrate may be electrically connected to the upper support member 610 . Through this structure, the sensor substrate can supply power to the AF sensor and transmit/receive information or signals from the controller. The substrate for the sensor may include a terminal unit (not shown). The upper support member 610 may be electrically connected to the terminal unit.

The sensing magnet may be disposed on the bobbin 210 . In this case, the sensing magnet may be referred to as a 'second magnet' to distinguish it from a 'first magnet' that is a driving magnet. The lens driving apparatus according to the present embodiment may further include a compensation magnet (not shown) disposed on the bobbin 210 and positioned symmetrically with the sensing magnet with respect to the center of the bobbin 210 . The compensating magnet may be referred to as a 'third magnet' to distinguish it from the first and second magnets. The compensating magnet may be arranged to achieve magnetic force balance with the sensing magnet. That is, the compensation magnet may be disposed to resolve the magnetic force imbalance generated by the sensing magnet. The sensing magnet may be disposed on one side of the bobbin 210 and the compensation magnet may be disposed on the other side of the bobbin 210 .

The OIS sensor unit 700 may be located on the stator 400 . The OIS sensor unit 700 may be located on an upper or lower surface of the substrate 410 . The OIS sensor unit 700, for example, may be disposed on the lower surface of the substrate 410 and located on the sensor mounting unit 530 formed on the base 500. The OIS sensor unit 700 may include a hall sensor as an example. In this case, the relative motion of the second mover 300 with respect to the stator 400 may be sensed by sensing the magnetic field of the second drive unit 320 . The OIS sensor unit 700, as an example, includes the first axis sensor 710 and the second axis sensor 720, and can sense both the x-axis and y-axis movements of the second mover 300. Meanwhile, the OIS sensor unit 700 may be positioned so as not to overlap the FP coil of the third driving unit 420 in the vertical direction.

In the lens driving device according to the present embodiment, the shapes of the first and third lateral support units 636 and 638 shown in FIG. 3 and the second and fourth lateral support units 637 and 639 shown in FIG. 4 are can be different In more detail, referring to FIGS. 3 and 4 , the third lower parts 660 of the second and fourth lateral support units 637 and 639 are the first and third lateral support units 636 and 638 . 3 The length in the optical axis direction may be shorter than that of the lower part 660 . In addition, the second and fourth lateral support units 637 and 639 include a first outer extension part 641 extending outwardly from the first lower part 640 and an outward extension from the second lower part 650. A second outer extension 651 may be included. Referring to FIG. 3 , it can be seen that the first and third lateral support units 636 and 638 do not have the first outer extension 641 and the second outer extension 651 .

However, in a modified example of this embodiment, all of the first to fourth lateral support units 636, 637, 638, and 639 may be provided with the same shape. As an example, the first to fourth lateral support units 636, 637, 638, and 639 are in a state in which the first outer extension 641 and the second outer extension 651 are omitted, as shown in FIG. can be formed In addition, as another example, the first to fourth lateral support units 636, 637, 638, and 639 include a first outer extension part 641 and a second outer extension part 651 as shown in FIG. can do.

In this embodiment, power needs to be applied to the first driving unit 220 and the third driving unit 420 . First, the third driving unit 420 is directly connected to the substrate 410 through a conducting member. That is, the third driving unit 420 may directly receive power from the substrate 410 . At this time, a conducting member that conducts electricity between the third driving unit 420 and the substrate 410 is located inside the first connection unit 330 and/or the second connection unit 634 .

Meanwhile, the second driving unit 220 is energized with the substrate 410 through the side support member 630 and the upper support member 610 . More specifically, one end of the second driving unit 220 is coupled to the first upper support unit 614 and the first lateral support unit 636, and the other end of the second driving unit 220 is the second upper support unit 615 And coupled with the third lateral support unit (638). At this time, the third side support unit 638 is located on the opposite side of the first side support unit 636 . Meanwhile, the first and third lateral support units 636 and 638 are electrically connected to the substrate 410 through a power supply unit. In more detail, the energizing unit may be coupled to the substrate 410 and the center of the third lower portion 660 of the first and third lateral support units 636 and 638 . In this case, the energizing unit connecting the third lower side portion 660 and the substrate 410 is spaced apart from the energizing member connecting the third driving unit 420 and the substrate 410 . Referring to FIG. 3 , it can be seen that the center of the third drive unit 420 where the current unit is located and the first connection part 330 and the second connection part 634 where the current supply member is located adjacent to each other are spaced apart from each other.

Meanwhile, in this embodiment, the second lateral support unit 637 and the fourth lateral support unit 639 may not be energized with the substrate 410 . However, as a modified example, the first upper support unit 614 may be coupled to the second side support unit 637, and the second upper support unit 615 may be coupled to the fourth side support unit 639. In addition, all of the first to fourth lateral support units 636 , 637 , 638 , and 639 may be electrically connected to the substrate 410 . In this case, the first and second upper support units 614 and 615 are energized as a pair with the first to fourth lateral support units 636, 637, 638 and 639, and the other two are not energized. can

The energizing unit and the energizing member described above may be provided as the same member. However, the current unit and the current member may be provided as different members. The conducting unit and the conducting member may be solder balls formed by soldering. Alternatively, the conducting unit and the conducting member may include conductive epoxy. However, the types of the energizing unit and energizing member are not limited thereto.

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

First, the auto focus function of the camera module according to the present embodiment will be described. When power is supplied to the AF coil unit of the first driving unit 220, the first driving unit 220 operates on the second driving unit 320 due to electromagnetic interaction between the AF coil unit and the magnet unit of the second driving unit 320. will perform a move on . At this time, the bobbin 210 to which the first driving unit 220 is coupled moves integrally with the first driving unit 220 . That is, the bobbin 210 coupled to the inside of the lens module moves in the optical axis direction (up and down direction) with respect to the housing 310 . Since this movement of the bobbin 210 results in the lens module moving closer or farther away from the image sensor, in this embodiment, power is supplied to the AF coil unit of the first driving unit 220 so that the lens module can move closer to the subject. It is possible to perform focus adjustment.

Meanwhile, in the camera module according to the present embodiment, auto focus feedback may be applied for more precise realization of the auto focus function. The AF sensor disposed in the housing 310 and provided as a hall sensor senses a magnetic field of a sensing magnet fixed to the bobbin 210 . Accordingly, when the bobbin 210 moves relative to the housing 310, the amount of magnetic field sensed by the AF sensor changes. The AF sensor detects the movement amount of the bobbin 210 in the z-axis direction or the position of the bobbin 210 in this way and transmits the detected value to the controller. The control unit determines whether or not to additionally move the bobbin 210 through the received sensing value. Since this process occurs in real time, the auto focus function of the camera module according to the present embodiment can be performed more precisely through auto focus feedback.

A hand shake correction function of the camera module according to the present embodiment will be described. When power is supplied to the OIS coil unit of the third driving unit 420, the second driving unit 320 moves relative to the third driving unit 420 due to electromagnetic interaction between the OIS coil unit and the driving magnet unit of the second driving unit 320. will perform the move. At this time, the housing 310 to which the second driving unit 320 is coupled moves integrally with the second driving unit 320 . That is, the housing 310 moves in a horizontal direction with respect to the base 500 . However, at this time, a tilt of the housing 310 with respect to the base 500 may be induced. At this time, the bobbin 210 also moves integrally with the housing 310. Therefore, since such movement of the housing 310 results in the lens module moving in a direction parallel to the direction in which the image sensor is placed with respect to the image sensor, in this embodiment, the OIS coil unit of the third driving unit 420 It is possible to perform the image stabilization function by supplying power.

Meanwhile, hand shake correction feedback may be applied to more precisely realize the hand shake correction function of the camera module according to the present embodiment. A pair of OIS sensor units 700 mounted on the base 500 and provided as hall sensors sense the magnetic field of the driving magnet unit of the second driving unit 320 fixed to the housing 310 . Accordingly, when the housing 310 moves relative to the base 500, the amount of the magnetic field sensed by the OIS sensor unit 700 changes. The pair of OIS sensor units 700 detect the amount or position of the horizontal direction (x-axis and y-axis directions) of the housing 310 in this way and transmit the detected value to the control unit. The control unit determines whether or not to additionally move the housing 310 through the received sensing value. Since this process occurs in real time, the hand shake correction function of the camera module according to the present embodiment can be performed more precisely through hand shake correction feedback.

In the above, even though all the components constituting the embodiment of the present invention have been described as being combined or operated as one, the present invention is not necessarily limited to these embodiments. That is, within the scope of the object of the present invention, all of the components may be selectively combined with one or more to operate. In addition, terms such as "comprise", "comprise" or "having" described above mean that the corresponding component may be present unless otherwise stated, and thus exclude other components. It should be construed as being able to further include other components. All terms, including technical or scientific terms, have the same meaning as commonly understood by a person of ordinary skill in the art to which the present invention belongs, unless defined otherwise. Commonly used terms, such as terms defined in a dictionary, should be interpreted as being consistent with the contextual meaning of the related art, and unless explicitly defined in the present invention, they are not interpreted in an ideal or excessively formal meaning.

The above description is merely an example of the technical idea of the present invention, and various modifications and variations can be made to those skilled in the art 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 explain, 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 construed according to the claims below, and all technical ideas within the equivalent range should be construed as being included in the scope of the present invention.

100: cover member 200: first mover
300: second mover 400: stator
500: base 600: support member
700: OIS sensor unit

Claims (13)

Base;
a housing disposed on the base;
a bobbin disposed within the housing;
a first driving unit disposed on the bobbin;
a second driving unit disposed in the housing and facing the first driving unit;
a substrate including a third driving unit facing the second driving unit and disposed on the base; and
And a lateral support member connecting the base and the housing,
The lateral support member includes a first lateral support unit and a third lateral support unit disposed on opposite sides of the housing, and a second lateral support unit and a fourth lateral support unit disposed on opposite sides of the housing. include,
Each of the first to fourth side support units includes a lower coupling portion coupled to the base, an upper coupling portion coupled to the housing, and a first coupling portion and a second coupling portion connecting the lower coupling portion and the upper coupling portion. include,
The lower coupling part includes a first lower part connected to the first connection part, a second lower part connected to the second connection part, and a third lower part connecting the first lower part and the second lower part,
The base includes an accommodation groove recessed on an outer surface of the base and having a shape corresponding to at least a part of the third lower part,
The third lower portion is adhered to the base by an adhesive member,
The third lower portion is coupled to the lower portion of the substrate through a conductive member,
The lens driving device of claim 1 , wherein the third lower portion of the second and fourth lateral support units includes a portion having a shorter length in an optical axis direction than the third lower portion of the first and third lateral support units. According to claim 1,
The lens driving device of claim 1 , wherein the third lower portion of the first lateral support unit overlaps the base in a direction perpendicular to the optical axis direction. According to claim 1,
The length of the third lower part of the first lateral support unit in the optical axis direction is constant from the first lower part side of the first lateral support unit to the second lower part side of the first lateral support unit. Device. According to claim 1,
The lens driving device of claim 1 , wherein the third lower portion of the first lateral support unit does not protrude above the substrate. According to claim 1,
The lens driving apparatus of claim 1 , wherein the third lower portion of the second and fourth side support units has a shape different from that of the third lower portion of the first and third side support units. According to claim 1,
The second and fourth lateral support units include a first outer extension portion extending outwardly from the first lower side portion and a second outer extension portion extending outwardly from the second lower side portion. According to claim 6,
The lens driving apparatus of claim 1 , wherein the first and second outer extensions are omitted from the first and third lateral support units. According to claim 1,
The first driving unit includes a coil,
The second driving unit includes a magnet,
The lens driving device of claim 1 , wherein the third driving unit includes a coil. printed circuit board;
an image sensor disposed on the printed circuit board;
The lens driving device according to any one of claims 1 to 8 disposed on the printed circuit board; and
A camera module including a lens coupled to the bobbin of the lens driving device. main body;
The camera module of claim 9 disposed on the main body; and
An optical device comprising a display unit disposed on the main body and displaying an image or photo taken by the camera module. delete delete delete

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