KR102651623B1 - Lens driving device, camera module and optical apparatus - Google Patents

Abstract

In this embodiment, the base; a mover located above the base and including a first coil; a first support member that movably supports the mover with respect to the base and is electrically connected to the first coil; A substrate located on the upper surface of the base; And a terminal unit including a first coupling part coupled to the substrate, a second coupling part coupled to the first support member, and a connection part connecting the first coupling part and the second coupling part, The second coupling part may be located lower than the first coupling part.

Description

Lens driving device, camera module and optical apparatus}

This embodiment relates to lens driving devices, camera modules, and optical devices.

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

As smartphones become widespread and wireless Internet services become commercialized, consumer demands related to smartphones are also diversifying, and various types of additional devices are being installed on smartphones.

Among them, a representative one is a camera module that takes photos or videos of a subject. Recently, camera modules are required to have an Optical Image Stabilization (OIS) function that automatically corrects the user's hand shake.

Meanwhile, in the camera module with the mentioned image stabilization function, an elastic member is provided to elastically support the mover on which the lens module is mounted with respect to the stator so that the lens module can move in a direction parallel to the image sensor.

However, as the structure of recent smartphones becomes increasingly thinner, the total length of the camera module in the z-axis direction decreases, which is a problem because the length of the elastic member is not sufficiently secured.
(Patent Document 1) US 2013-0016427 A1

In order to solve the above problems, the present embodiment seeks to provide a lens driving device that secures the movable length of the elastic member for the camera shake correction function even inside a thinner smartphone.

Additionally, it is intended to provide a camera module and an optical device including a lens driving device according to this embodiment.

The lens driving device according to this embodiment includes a base; a mover located above the base and including a first coil; a first support member that movably supports the mover with respect to the base and is electrically connected to the first coil; A substrate located on the upper surface of the base; and a terminal unit located on the base, wherein the terminal unit includes a first coupling portion coupled to the substrate, a second coupling portion coupled to the first support member, the first coupling portion, and the first coupling portion. It includes a connection part connecting two coupling parts, wherein the first support member passes through a first through hole formed in the base, and the second coupling part may be located lower than the first coupling part.

The second coupling portion may include a coupling hole formed at a position corresponding to the first through hole.

The first support member may be connected to the terminal unit by passing through the coupling hole formed in the second coupling part.

The base may include a second through hole or groove formed at a position corresponding to the first coupling portion.

The connection portion may extend downward from the first coupling portion and be connected to the second coupling portion.

The terminal unit may further include a bent portion extending downward from the first coupling portion and contacting one surface of the base.

The second through hole is spaced apart from the side of the base, and the terminal unit may further include a third coupling portion that extends outward from the bent portion and is at least partially exposed to the side of the base.

The base is formed by having a portion of the lower surface recessed upward and may include a receiving groove for accommodating the terminal unit.

The second coupling part further includes an extension part extending laterally of the connection part, and an inclined part extending horizontally and obliquely from the extension part, and the coupling hole may be formed in the inclined part.

The mover includes a bobbin to which a lens module is coupled; a housing spaced apart from the bobbin; and a second support member coupled to the bobbin and the housing and coupled to the first coil, wherein the first support member may be coupled to the second support member.

The mover includes a bobbin on which the first coil is located and the lens module is coupled; a housing spaced apart from the bobbin; and a magnet located in the housing and facing the first coil. A second coil facing the magnet is located on the substrate, and the bobbin and the housing include a magnet that is movable with respect to the housing. A second support member that supports the device may be combined.

It further includes a third coil located in the housing and spaced apart from the first coil, and the first support member includes first to fourth support units spaced apart from each other, and the first and second support units are , is electrically connected to the first coil through the second support member, and the third and fourth support units may be electrically connected to the third coil.

The first to fourth support units may be located at each of four corner portions formed between four sides of the housing.

The camera module according to this embodiment includes a printed circuit board; An image sensor mounted on the printed circuit board; A base located on the printed circuit board; a mover located above the base and including a first coil; a first support member that movably supports the mover with respect to the base and is electrically connected to the first coil; A substrate located on the upper surface of the base; and a terminal unit located on the base, wherein the terminal unit includes a first coupling portion coupled to the substrate, a second coupling portion coupled to the first support member, the first coupling portion, and the first coupling portion. It includes a connection part connecting two coupling parts, wherein the first support member passes through a first through hole formed in the base, and the second coupling part may be located lower than the first coupling part.

An optical device according to an embodiment includes a main body, a display unit located outside the main body, and a camera module at least partially accommodated in the main body, wherein the camera module includes: a printed circuit board; An image sensor mounted on the printed circuit board; A base located on the printed circuit board; a mover located above the base and including a first coil; a first support member that movably supports the mover with respect to the base and is electrically connected to the first coil; A substrate located on the upper surface of the base; and a terminal unit located on the base, wherein the terminal unit includes a first coupling portion coupled to the substrate, a second coupling portion coupled to the first support member, the first coupling portion, and the first coupling portion. It includes a connection part connecting two coupling parts, wherein the first support member passes through a first through hole formed in the base, and the second coupling part may be located lower than the first coupling part.

Through this embodiment, the movable length of the elastic member for the hand shake correction function can be secured. Accordingly, the phenomenon of excessive stress acting on the elastic member can be prevented.

1 is a perspective view of a lens driving device according to this embodiment.
Figure 2 is an exploded perspective view of the lens driving device according to this embodiment.
Figure 3 is a perspective view of the lens driving device according to this embodiment with the cover member removed.
Figure 4 is an exploded perspective view showing a partial configuration of the lens driving device according to this embodiment.
Figure 5 is a perspective view showing the OIS support member and terminal unit of the lens driving device according to this embodiment.
FIG. 6 is a perspective view showing the lens driving device shown in FIG. 4 in a combined state.
FIG. 7 is a plan view showing the lens driving device shown in FIG. 6.
Figure 8 is a cross-sectional view viewed along XY of Figure 7.
Figure 9 is a bottom view of the lens driving device according to this embodiment.
Figure 10 is a conceptual diagram illustrating the effect of the lens driving device according to this embodiment.
Figure 11 is a conceptual diagram showing a comparative example for comparison with this embodiment.

Hereinafter, some embodiments of the present invention will be described through exemplary drawings. When assigning reference numerals to components in each drawing, identical components are indicated with the same reference numerals as much as possible, even if they are shown in different drawings.

Additionally, when describing the components of an embodiment of the present invention, terms such as first, second, A, B, (a), and (b) may be used. These terms are only used to distinguish the component from other components, and the nature, sequence, or order of the component is not limited by the term. When a component is described as being "connected," "coupled," or "connected" to another component, that component may be directly connected, coupled, or connected to that other component, but may not be connected to that component or that other component. 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 when coupled to the lens driving device. Meanwhile, “optical axis direction” can be used interchangeably with vertical direction, z-axis direction, etc.

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

Hereinafter, one of the AF coil 220, the driving magnet 320, and the OIS coil 430 will be referred to as the “first driving unit,” the other will be referred to as the “second driving unit,” and the remaining one will be referred to as the “third driving unit.” It can be called

Hereinafter, one of the AF coil 220, OIS coil 430, and sensing coil 710 will be referred to as the “first coil,” the other will be referred to as the “second coil,” and the remaining one will be referred to as the “third coil.” It can be called

Hereinafter, one of the AF support member 500 and the OIS support member 600 may be referred to as a “first support member” and the other may be referred to as a “second support member.”

Below, the AF support member 500 is described separately from the movable parts 200 and 300, but since the AF support member 500 is also a member that moves integrally with the movable parts 200 and 300 when OIS is driven, the AF support member 500 ) can be described as a configuration of movable parts (200, 300).

Below, the configuration of the optical device according to this embodiment will be described.

Optical devices according to this embodiment include mobile phones, mobile phones, smart phones, portable smart devices, digital cameras, laptop computers, digital broadcasting terminals, PDAs (Personal Digital Assistants), and PMPs (Portable Multimedia Players). ), navigation, etc., but is not limited to this and any device for taking videos or photos is possible.

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

Below, the configuration of the camera module according to this embodiment will be described.

The camera module may further include a lens driving device, a lens module (not shown), an infrared filter (not shown), a printed circuit board (not shown), an image sensor (not shown), and a control unit (not shown).

The lens module may include one or more lenses (not shown). The lens module may include a lens and a lens barrel (not shown). However, the configuration of the lens module is not limited to the lens barrel, and any holder structure that can support one or more lenses is possible. The lens module is coupled to the lens driving device and can move together with a portion of the lens driving device. The lens module may be coupled to the inside of the lens driving device. The lens module may be screwed together with the lens driving device. The lens module may be coupled to the lens driving device using an adhesive (not shown). Meanwhile, light passing through the lens module may be irradiated to the image sensor.

The infrared filter may be located in the opening 411 of the base 410. Alternatively, the infrared filter may be located on a holder member (not shown) that is provided separately from the base 410. The infrared filter can block light in the infrared region from being incident on the image sensor. The infrared filter may include an infrared absorption filter (Blue filter). The infrared filter may include an infrared reflection filter (IR cut filter). The infrared filter may be located between the lens module and the image sensor. The infrared filter may be made of a film material or a glass material. The infrared filter may be formed by coating an infrared blocking coating material on a flat optical filter, such as a cover glass for protecting an imaging surface. However, it is not limited to this.

A printed circuit board may support a lens drive device. An image sensor may be mounted on a 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 located on the upper side of 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 this structure, light passing through the lens module accommodated inside the lens driving device can be irradiated to an image sensor mounted on a printed circuit board. A printed circuit board can supply power to the lens drive 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 so that its optical axis coincides with the lens module. Through this, the image sensor can acquire light that has passed through the lens module. An image sensor can output irradiated light as an image. The image sensor may be, for example, a charge coupled device (CCD), a metal oxide semiconductor (MOS), a CPD, and a CID. However, the type of image sensor is not limited to this.

The control unit may be mounted on a printed circuit board. The control unit can control the direction, intensity, and amplitude of the current supplied to each component of the lens driving device. The control unit may control the lens driving device to perform one or more of the autofocus function and the image stabilization function of the camera module. That is, the control unit controls the lens driving device to move the lens module in the optical axis direction, or to move or tilt the lens module in a direction perpendicular to the optical axis direction. Furthermore, the control unit can perform feedback control of the autofocus function and image stabilization function. In more detail, the control unit receives the position of the bobbin 210 detected by the sensing coil 710 and/or the position of the housing 310 detected by the OIS sensor 720 and operates the AF coil 220 and/or the OIS By controlling the voltage or current applied to the coil 430, a more precise autofocus function and/or camera shake correction function can be provided.

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

Figure 1 is a perspective view of the lens driving device according to this embodiment, Figure 2 is an exploded perspective view of the lens driving device according to this embodiment, and Figure 3 is a perspective view of the lens driving device according to this embodiment with the cover member removed. , FIG. 4 is an exploded perspective view showing a partial configuration of the lens driving device according to this embodiment, FIG. 5 is a perspective view showing the OIS support member and terminal unit of the lens driving device according to this embodiment, and FIG. 6 is It is a perspective view showing the lens driving device shown in FIG. 4 in a combined state, FIG. 7 is a plan view showing the lens driving device shown in FIG. 6, FIG. 8 is a cross-sectional view viewed along the line X-Y of FIG. 7, and FIG. 9 is a This is a bottom view of the lens driving device according to this embodiment.

The lens driving device according to this embodiment may include a cover member 100, movers 200 and 300, a stator 400, support members 500 and 600, a sensor unit, and a terminal unit 800. . However, in the lens driving device according to this embodiment, one or more of the cover member 100, the mover 200, 300, the stator 400, the support member 500, 600, the sensor unit, and the terminal unit 800. This can be omitted. In particular, the sensor unit can be omitted as it is configured for an autofocus feedback function and/or an image stabilization feedback function.

The cover member 100 can accommodate the housing 310 and the bobbin 210 in the inner space. The cover member 100 may be coupled to the base 410. The cover member 100 can 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 to this. The cover member 100 may be formed of a metal material, as an example. In more detail, the cover member 100 may be made of a metal plate. In this case, the cover member 100 can block electromagnetic interference (EMI). Because of these features of the cover member 100, the cover member 100 may be referred to as an “EMI shield can.” The cover member 100 can block radio waves generated outside the lens driving device from flowing into the cover member 100. Additionally, the cover member 100 can 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 to this.

The cover member 100 may include an upper plate 110 and a side plate 120. The cover member 100 may include a side plate 120 whose lower end is coupled to the base 410. The cover member 100 may include a top plate 110 located on the upper side of the housing 310. The lower end of the side plate 120 of the cover member 100 may be mounted on the base 410. The lower end of the side plate 120 of the cover member 100 may be located at the stepped portion 415 of the base 410. The cover member 100 may be mounted on the base 410 with its inner surface in close contact with part or all of the side surface of the base 410. The mover 200, 300, the stator 400, and the support members 500, 600 may be located in the internal space formed by the cover member 100 and the base 410. Through this structure, the cover member 100 can protect internal components from external impact and simultaneously prevent penetration of external contaminants. However, it is not limited to this, and the lower end of the side plate 120 of the cover member 100 may be directly coupled to the printed circuit board located below the base 410.

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

The movers 200 and 300 can move relative to the stator 400 . The movers 200 and 300 may be located on the upper side of the base 410. The movers 200 and 300 may include a bobbin 210 to which the lens module is coupled. The movers 200 and 300 may include a bobbin 210 to which the lens module is coupled and where the AF coil 220 is located. The movers 200 and 300 may include an AF coil 220 . The movers 200 and 300 may include a housing 310 that is spaced apart from the bobbin 210 . The movers 200 and 300 may include a driving magnet 320 located in the housing 310 and facing the AF coil 220. The movers 200 and 300 may include an upper support member 510 coupled to the bobbin 210 and the housing 310 and coupled to the AF coil 220. The AF support member 500 moves integrally with the bobbin 210 and the housing 310 when OIS is driven and can be described as a component of the movers 200 and 300. However, the AF support member 500 may be described as a separate configuration from the movers 200 and 300.

The movable elements 200 and 300 may include a first movable element 200 and a second movable element 300 .

The first movable member 200 can move for autofocus driving. The first movable element 200 may include a bobbin 210 and an AF coil 220. The first movable member 200 may include a bobbin 210 coupled to the lens module. The first movable element 200 may include an AF coil 220 that is located on the bobbin 210 and moves by electromagnetic interaction with the driving magnet unit 320.

The bobbin 210 may be accommodated in the internal space of the cover member 100. Bobbin 210 may be combined with a lens module. In more detail, the outer peripheral surface of the lens module may be coupled to the inner peripheral surface of the bobbin 210. An AF coil 220 may be located on the bobbin 210. The AF coil 220 may be coupled to the bobbin 210. An upper support member 600 may be coupled to the upper part of the bobbin 210. 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, an upper coupling part 213, and a lower coupling part (not shown).

The bobbin 210 may include a top and bottom open lens receiving portion 211 on the inside. The bobbin 210 may include a lens receiving portion 211 formed on the inside. A lens module may be coupled to the lens accommodating portion 211. A screw thread having a shape corresponding to a screw thread formed on the outer circumferential surface of the lens module may be formed on the inner peripheral surface of the lens accommodating portion 211. That is, the lens accommodating portion 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 that is cured by ultraviolet rays (UV) or heat. That is, the lens module and the bobbin 210 may be bonded using ultraviolet curing epoxy and/or heat curing epoxy.

The bobbin 210 may include a first driving unit coupling portion 212 on which the AF coil 220 is disposed. The first drive unit coupling portion 212 may be formed integrally with the outer surface of the bobbin 210. Additionally, 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 portion 212 may be formed by recessing a portion of the outer surface of the bobbin 210 to correspond to the shape of the AF coil 220. At this time, the AF coil 220 may be serially wound around the first driving unit coupling portion 212. As a variation, the first driving unit coupling portion 212 may be formed as an upper or lower open type. At this time, the AF coil 220 may be inserted and coupled to the first driver coupling portion 212 through the open portion in a pre-wound state.

The bobbin 210 may include an upper coupling portion 213 coupled to the upper support member 510. The upper coupling portion 213 may be coupled to the inner portion 512 of the upper support member 510. As an example, the protrusion of the upper coupling portion 213 may be inserted into and coupled to a groove or hole of the inner portion 512 of the upper support member 510. At this time, the protrusion of the upper coupling part 213 can be heat-sealed while inserted into the hole of the inner part 512 to fix the upper support member 510.

The bobbin 210 may include a lower coupling portion coupled to the lower support member 520. The lower coupling portion may be coupled to the inner portion 522 of the lower support member 520. As an example, the protrusion of the lower coupling portion may be inserted into and coupled to a groove or hole of the inner portion 522 of the lower support member 520. At this time, the protrusion of the lower coupling part can be heat-sealed while inserted into the hole of the inner part 522 to fix the lower support member 520.

The AF coil 220 may be located on the bobbin 210. The AF coil 220 may be coupled to the bobbin 210. The AF coil 220 may be guided by the first driver coupling portion 212 and wound on the outer surface of the bobbin 210. Additionally, in another embodiment, the AF coil 220 may be provided independently of four coils and may be disposed on the outer surface of the bobbin 210 such that two neighboring coils form an angle of 90° to each other. The AF coil 220 may face the driving magnet 320. The AF coil 220 may be arranged to electromagnetically interact with the driving magnet 320. The AF coil 220 can move the bobbin 210 with respect to the housing 310 through electromagnetic interaction with the driving magnet 320.

The AF coil 220 may include a pair of lead wires for power supply. At this time, a pair of lead lines of the AF coil 220 may be connected to the first upper support unit 5101 and the second upper support unit 5102, respectively. That is, the AF coil 220 can receive power through the upper support member 510. From the substrate 420 to the AF coil 220 through the first support unit 610 coupled with the first upper support unit 5101 and the second support unit 620 coupled with the second upper support unit 5102. Power can be supplied. In more detail, the current supplied to the terminal portion 412 of the substrate 420 is connected to the first support unit 610, the first upper support unit 5101, the AF coil 220, the second upper support unit 5102, and the second upper support unit 5102. 2 It can be sequentially delivered to the support unit 620 and the substrate 420. Through this structure, when power is supplied to the AF coil 220, an electromagnetic field can be formed around the AF coil 220.

The second movable member 300 can move for hand shake correction operation. When driving the hand shake correction, the first movable member 200 may move integrally with the second movable member 300. The second movable member 300 may be located outside the first movable member 200 and opposite to the first movable member 200 . The second movable member 300 may move the first movable member 200 or may move together with the first movable member 200. The second movable member 300 may be movably supported by the stator 400 located below. The second movable member 300 may be located in the inner space of the cover member 100.

The second movable member 300 may include a housing 310 and a driving magnet 320. The second movable member 300 may include a housing 310 located outside the bobbin 210. Additionally, the second movable member 300 may include a driving magnet 320 that is positioned opposite the AF coil 220 and is 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 120 of the cover member 100. The housing 310 may, as an example, have a hexahedral shape including four sides. However, the shape of the housing 310 may be any shape that can be placed inside the cover member 100. The housing 310 is made of an insulating material and may be made of an injection molded product considering productivity.

The housing 310 may be located outside the bobbin 210. The housing 310 may be spaced apart from the bobbin 210. However, in this case, as the bobbin 210 moves, a part of the bobbin 210 and a part of the housing 310 may come into contact. The housing 310 may be located above the base 410. The housing 310 is a movable part for OIS operation and may be placed at a certain distance from the cover member 100. However, in the AF model, the housing 310 may be fixed on the base 410. Alternatively, in the AF model, the housing 310 may be omitted and the driving magnet 320 may be fixed to the cover member 100. An upper support member 510 may be coupled to the upper part of the housing 310. A lower support member 520 may be coupled to the lower part of the housing 310.

The housing 310 may include an inner space 311, a second driver coupling portion 312, an upper coupling portion 313, a lower coupling portion (not shown), and a sensing coil coupling portion 315.

The upper and lower sides of the housing 310 are open so that the first movable member 200 can be moved up and down. The housing 310 may include an inner space 311 that is open at the top and bottom. 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. Additionally, the inner peripheral surface of the housing 310 forming the inner space 311 may be positioned spaced apart from the outer peripheral surface of the bobbin 210.

The housing 310 may include a second driving unit coupling portion 312 on a side surface that is formed in a shape corresponding to the driving magnet 320 and accommodates the driving magnet 320. The second driving unit coupling portion 312 can accommodate and secure the driving magnet 320. The driving magnet 320 may be fixed to the second driving unit coupling portion 312 with an adhesive (not shown). Meanwhile, the second driving unit coupling portion 312 may be located on the inner peripheral surface of the housing 310. In this case, there is an advantage in electromagnetic interaction with the AF coil 220 located inside the driving magnet 320. Additionally, as an example, the second driving unit coupling portion 312 may have an open lower portion. In this case, there is an advantage in electromagnetic interaction between the OIS coil 430 located below the driving magnet 320 and the driving magnet 320. As an example, the second driving unit coupling portion 312 may be provided in four pieces. A driving magnet 320 may be coupled to each of the four second driving unit coupling parts 312.

The housing 310 may include an upper coupling portion 313 coupled to the upper support member 510. The upper coupling portion 313 may be coupled to the outer portion 511 of the upper support member 510. As an example, the protrusion of the upper coupling portion 313 may be inserted into and coupled to a groove or hole of the outer portion 511 of the upper support member 510. At this time, the protrusion of the upper coupling portion 313 can be heat-sealed while inserted into the hole of the outer portion 511 to fix the upper support member 510.

The housing 310 may include a lower coupling portion coupled to the lower support member 520. The lower coupling portion may be coupled to the outer portion 521 of the lower support member 520. As an example, the protrusion of the lower coupling portion may be inserted into and coupled to a groove or hole of the outer portion 521 of the lower support member 520. At this time, the protrusion of the lower coupling part can be heat-sealed while inserted into the hole of the outer part 521 to fix the lower support member 520.

The housing 310 may include a sensing coil coupling portion 315 to which the sensing coil 710 is coupled. The sensing coil 710 may be coupled to the sensing coil coupling portion 315. The sensing coil coupling portion 315 may be located at the top of the housing 310. The sensing coil coupling portion 315 may be located at the top of the housing 310. The sensing coil coupling portion 315 may be formed as a receiving groove in which a portion of the outer surface of the housing 310 is recessed inward.

The driving magnet 320 may be accommodated in the internal space of the cover member 100. The driving magnet 320 may face the AF coil 220. The driving magnet 320 may move the AF coil 220 through electromagnetic interaction with the AF coil 220. The driving magnet 320 may be located in the housing 310. The driving magnet 320 may be fixed to the second driving part coupling portion 312 of the housing 310. The driving magnet 320 may be arranged in the housing 310 such that four magnets are independently provided and two neighboring magnets form an angle of 90° to each other. That is, the driving magnet 320 can promote efficient use of the internal volume through magnets mounted at equal intervals on the four sides of the housing 310. Additionally, the driving magnet 320 may be attached to the housing 310 with an adhesive. However, it is not limited to this.

The stator 400 can movably support the movers 200 and 300. The stator 400 may support the second movable member 300 movably. The stator 400 may include a base 410, a substrate 420, and an OIS coil 430. The stator 400 may include a substrate 420 located between the OIS coil 430 and the base 410. Additionally, the stator 400 may include an OIS coil 430 facing the driving magnet 320.

The base 410 may be placed on a printed circuit board. The base 410 may be fixed to the printed circuit board using an active alignment adhesive. The base 410 may be located below the bobbin 210. The base 410 may be located on the lower side of the housing 310. The base 410 may support the second movable member 300. A printed circuit board may be located on the lower side of the base 410. The base 410 can perform a sensor holder function to protect the image sensor mounted on the printed circuit board.

The base 410 may include an opening 411, a sensor receiving part 412, a foreign matter collecting part (not shown), a terminal receiving part 413, a support part 414, and a step part 415.

The base 410 may include an opening 411 formed at a position corresponding to the lens receiving portion 211 of the bobbin 210. Meanwhile, an infrared ray filter may be coupled to the opening 411 of the base 410. However, an infrared filter may be coupled to a separate sensor holder placed below the base 410.

The base 410 may include a sensor receiving portion 412 to which the OIS sensor 720 is coupled. That is, the OIS sensor 720 can be accommodated in the sensor accommodation unit 412. At this time, the OIS sensor 720 may detect the horizontal movement or tilt of the housing 310 by detecting the driving magnet 320 coupled to the housing 310. As an example, two sensor receiving units 412 may be provided. An OIS sensor 720 may be located in each of the two sensor receiving portions 412. In this case, the OIS sensor 720 may include a first-axis sensor and a second-axis sensor arranged to detect movement of the housing 310 in both the x-axis and y-axis directions.

The base 410 may include a foreign matter collection unit that collects foreign matter flowing into the cover member 100. The foreign matter collecting unit is located on the upper surface of the base 410 and can collect foreign substances on the inner space formed by the cover member 100 and the base 410, including adhesive materials.

The base 410 may include a terminal receiving portion 413 that accommodates at least a portion of the terminal unit 800. The terminal accommodating portion 413 may accommodate at least a portion of the terminal unit 800. Accordingly, the terminal receiving portion 413 may be formed at least in part to have a shape corresponding to the terminal unit 800.

The base 410 may include a second through hole 4131 where the first coupling portion 810 is located. The second through hole 4131 may be formed as a first groove as a modified example. The base 410 may include a second through hole 4131 or a first groove where the first coupling portion 810 is located. The terminal receiving portion 413 may include a second through hole 4131 where the first coupling portion 810 of the terminal unit 800 is located. The second through hole 4131 may be formed to penetrate the base 410 in the vertical direction (optical axis direction). The first coupling portion 810 disposed in the second through hole 4131 may be exposed upward. In this structure, the first coupling portion 810 can be coupled to the lower surface of the substrate 420. The second through hole 4131 may be spaced apart from the side of the base 410. That is, the second through hole 4131 may not be open to the side of the base 410. The second through hole 4131 may be formed in a shape corresponding to the first coupling portion 810.

The base 410 may include a first through hole 4132 through which the OIS support member 600 passes. The first through hole 4132 may be formed as a second groove as a modified example. The base 410 may include a first through hole 4132 or a second groove through which the OIS support member 600 passes. The terminal receiving portion 413 may include a first through hole 4132 through which the OIS support member 600 passes. The first through hole 4132 may be formed to penetrate the base 410 in the vertical direction. The first through hole 4132 may be formed to allow the OIS support member 600 to pass through. The first through hole 4132 may be formed to correspond to a through hole formed in the substrate 420. The OIS support member 600 may pass through the through hole and the first through hole 4132 of the substrate 420 and be coupled to the second coupling portion 820 of the terminal unit 800. That is, the second coupling portion 820 may be located below the first through hole 4132. The first through hole 4132 may overlap the second coupling portion 820 in the vertical direction.

The base 410 is formed by having a portion of the lower surface recessed upward and may include a receiving groove 4133 that accommodates the second coupling portion 820. However, in a modified example, the receiving groove 4133 may be formed as a through hole by another groove recessed downward from the upper surface of the base 410. The terminal receiving portion 413 is formed by having a portion of the lower surface recessed toward the upper side and may include a receiving groove 4133 that accommodates the second coupling portion 820. The receiving groove 4133 may be formed by a portion of the lower surface of the base 410 being depressed upward. The receiving groove 4133 can accommodate at least a portion of the second coupling portion 820 of the terminal unit 800. The upper surface of the second coupling portion 820 of the terminal unit 800 may be in contact with the lower surface of the base 410 forming the receiving groove 4133. An adhesive member (not shown) may be provided between the lower surface of the base 410 forming the receiving groove 4133 and the upper surface of the second coupling portion 820 of the terminal unit 800. The receiving groove 4133 may be formed in a shape corresponding to the second coupling portion 820. The first through hole 4132 and the receiving groove 4133 may be connected. The first through hole 4132 and the receiving groove 4133 can be described as an integral member based on the mentioned features. The receiving groove 4133 may be located below the first through hole 4132. The first through hole 4132 can accommodate the OIS support member 600 through it. The receiving groove 4133 can accommodate the second coupling portion 820 coupled to the OIS support member 600.

The base 410 may include a support portion 414 that supports the housing 310. The support portion 414 may support the housing 310 . The support portion 414 may support four corner portions of the housing 310. The support portion 414 may protrude upward from the upper surface of the base 410. The support portion 414 is formed at each of the four corner portions and can accommodate the housing 310 inside. Through this structure, the support portion 414 can function as a stopper that limits the lateral movement distance of the housing 310.

The base 410 may include a step portion 415 on which the cover member 100 is seated. The lower end of the side plate 120 of the cover member 100 may be seated on the step portion 415. The step portion 415 may directly contact the lower end of the side plate 120 of the cover member 100. Additionally, an adhesive member (not shown) may be provided between the step portion 415 and the side plate 120 of the cover member 100. The step portion 415 may be formed to protrude laterally from the side of the base 410. The step portion 415 may be formed at the bottom of the base 410. However, it is not limited to this.

The substrate 420 may be located on the upper surface of the base 410. The substrate 420 may be located below the housing 310 . An OIS coil 430 may be located on the substrate 420. The OIS coil 430 may be coupled to the substrate 420. The substrate 420 may include a flexible printed circuit board (FPCB). The substrate 420 may be positioned between the base 410 and the housing 310. The substrate 420 may be positioned between the OIS coil 430 and the base 410. The substrate 420 may supply power to the OIS coil 430. The substrate 420 may supply power to the AF coil 220. As an example, the substrate 420 may supply power to the AF coil 220 through the OIS support member 600 and the upper support member 510. Additionally, the substrate 420 may be electrically connected to the sensing coil 710 through the OIS support member 600 and the upper support member 510.

The substrate 420 may include an opening 421 and a terminal portion 422. The substrate 420 may include an opening 421 through which light passing through the lens module passes. The substrate 420 may include a terminal portion 422 that extends from one side of the body portion and is bent downward. The terminal portion 422 may protrude downward from the cover member 100. Through this structure, the terminal portion 422 can be exposed to the outside. The terminal portion 422 can be electrically connected to an external component by soldering, etc. to supply power to the lens driving device of this embodiment. The terminal portion 422 may be accommodated in a terminal receiving portion recessed on the side of the base 410.

The OIS coil 430 may face the driving magnet 320. The OIS coil 430 can move the driving magnet 320 through electromagnetic interaction. The OIS coil 430 may be located on the substrate 420. The OIS coil 430 may be located between the base 410 and the housing 310. The OIS coil 430 may face the driving magnet 320. When power is applied to the OIS coil 430, the driving magnet 320 and the housing 310 to which the driving magnet 320 is fixed can be moved as one due to the interaction between the OIS coil 430 and the driving magnet 320. there is.

The OIS coil 430 may be formed as a pattern coil (FP coil, fine pattern coil) mounted on the substrate 420. In this case, it can be effective in terms of miniaturization of the lens driving device (lowering the height in the z-axis direction, which is the optical axis direction). As an example, the OIS coil 430 may be formed to minimize interference with the OIS sensor 720 located below. The OIS coil 430 may be positioned so as not to overlap the OIS sensor 720 in the vertical direction.

The support members 500 and 600 may connect any two or more of the first movable member 200, the second movable member 300, and the stator 400. The support members 500 and 600 elastically connect any two or more of the first movable member 200, the second movable member 300, and the stator 400 to enable relative movement between each component. I can support it. At least a portion of the support members 500 and 600 may be formed to have elasticity. In this case, the support members 500 and 600 may be referred to as elastic members or springs.

The support members 500 and 600 may include an AF support member 500 and an OIS support member 600. The AF support member 500 may be coupled to the first movable member 200 and the second movable member 300 as a support member for AF driving. The OIS support member 600 may be coupled to the second movable member 300 and the stator 400 as a support member for OIS driving.

The AF support member 500 may include an upper support member 510 and a lower support member 520. The AF support member 500 may be coupled to the bobbin 210 and the housing 310. The AF support member 500 may support the bobbin 210 to move with respect to the housing 310 during AF operation. The AF support member 500 may elastically support the bobbin 210 so that the bobbin 210 moves to its initial position when the AF drive is completed.

The upper support member 510 may be coupled to the housing 310 and the bobbin 210. The upper support member 510 may be coupled to the top of the bobbin 210 and the top of the housing 310. The upper support member 510 may support the bobbin 210 movably with respect to the housing 310 . The inner portion 512 of the upper support member 510 may be coupled to the upper coupling portion 213 of the bobbin 210. The outer portion 511 of the upper support member 510 may be coupled to the upper coupling portion 313 of the housing 310.

The upper support member 510 may include an outer portion 511, an inner portion 512, a connecting portion 513, and a coupling portion 514. The upper support member 510 may include an outer portion 511 coupled to the housing 310. The upper support member 510 may include an inner portion 512 coupled to the bobbin 210. The upper support member 510 may include a connection portion 513 connecting the outer portion 511 and the inner portion 512. The upper support member 510 may include a coupling portion 514 that extends from the outer portion 511 and is coupled to the OIS support member 600.

The upper support member 510 may be divided into two bodies to supply power to the AF coil 220. The upper support member 510 may include a pair of upper support units 5101 and 5102 spaced apart from each other. The upper support member 510 may include a first upper support unit 5101 and a second upper support unit 5102. The second upper support unit 5102 may be spaced apart from the first upper support unit 5101. Each of the first and second upper support units 5101 and 5102 may be electrically connected to the AF coil 220. The first upper support unit 5101 may be combined with the first support unit 610. The second upper support unit 5102 may be combined with the second support unit 610.

The lower support member 520 may be coupled to the bobbin 210 and the housing 310. The lower support member 520 may be coupled to the lower part of the bobbin 210 and the lower part of the housing 310. The lower support member 520 may include an outer portion 521, an inner portion 522, and a connection portion 523. The lower support member 520 includes an outer portion 521 coupled to the housing 310, an inner portion 522 coupled to the bobbin 210, and a connection portion elastically connecting the outer portion 521 and the inner portion 522 ( 523) may be included. As an example, the lower support member 520 may be formed integrally. However, it is not limited to this. As a modified example, the lower support member 520 may be separately provided as a pair to replace the upper support member 510 and used to supply power to the AF coil 220.

The OIS support member 600 can movably support the movers 200 and 300 with respect to the base 410. The OIS support member 600 may be electrically connected to the AF coil 220. The OIS support member 600 may be combined with the upper support member 510.

The OIS support member 600 may be coupled to the upper support member 510 and the terminal unit 800. The OIS support member 600 may be electrically connected to the upper support member 510 and the substrate 420. The OIS support member 600 may be electrically connected to the substrate 420 through the terminal unit 800. The OIS support member 600 can elastically support the housing 310 with respect to the base 410. One side of the OIS support member 600 may be coupled to the terminal unit 800 disposed on the stator 400 and the other side may be coupled to the upper support member 510 and/or the housing 310. Through this structure, the OIS support member 600 elastically supports the second movable member 300 with respect to the stator 400 so that the second movable member 300 can move or tilt in the horizontal direction. I can support it. The upper part of the OIS support member 600 may be coupled to the upper support member 510 by soldering. The lower part of the OIS support member 600 may be coupled to the terminal unit 800 by soldering. The OIS support member 600 may include a plurality of wires, as an example. Alternatively, the OIS support member 600 may include a plurality of leaf springs as a modified example. Meanwhile, the OIS support member 600 may be formed integrally with the upper support member 510.

The OIS support member 600 may include first to fourth support units 510, 620, 630, and 640 that are spaced apart from each other. The first to fourth support units 510, 620, 630, and 640 may be spaced apart from each other. The first and second support units 610 and 620 may be electrically connected to the AF coil 220 through the upper support member 510. The third and fourth support units 630 and 640 may be electrically connected to the sensing coil 710. The first to fourth support units 510, 620, 630, and 640 may be located at each of four corners formed between the four sides of the housing 310. The first to fourth support units 510, 620, 630, and 640 may be arranged symmetrically with respect to the center of the housing 310.

The sensor unit may be provided for one or more of autofocus feedback and handshake correction feedback. The sensor unit may detect the position or movement of one or more of the first movable member 200 and the second movable member 300.

The sensor unit may include, as an example, an AF sensor unit and an OIS sensor unit. The AF sensor unit may sense the relative vertical movement of the bobbin 210 with respect to the housing 310 and provide information for AF feedback. The OIS sensor unit may detect horizontal movement or tilt of the second movable person 300 and provide information for OIS feedback.

The AF sensor unit may include a sensing coil 710, a high-frequency current application unit (not shown), and a voltage detection unit (not shown). The sensing coil 710 is configured for autofocus feedback and may be omitted if the lens driving device is not an autofocus feedback type. That is, the sensing coil 710 may be omitted in this embodiment. Meanwhile, the sensing coil 710 may be replaced with a Hall sensor unit in a modified example. The Hall sensor unit may include a Hall sensor and a sensing magnet. In a modified example, when the Hall sensor is located in one of the housing 310 and the bobbin 210 and the sensing magnet is located in the other, the strength of the magnetic force detected by the Hall sensor changes as the bobbin 210 moves, so the bobbin The position and/or movement of 210 may be detected.

As a modified example, in the embodiment in which the AF sensor unit is not provided, current only needs to be applied to the AF coil 220, so only two wires configured according to an example of the OIS support member 600 are connected through the AF support member 500. It can be connected to the board 420 or receive a signal. In the mentioned variant, two wires may be connected to the board 420 through the terminal unit 800 and externally connected through the terminal portion 422 formed on the board 420. However, in another variant, two wires may be directly connected to the external component of the lens driving device through the terminal unit 800. At this time, a portion of the terminal unit 800 may be directly exposed to the outside of the lens driving device.

The sensing coil 710 may be located in the housing 310. The sensing coil 710 may be located surrounding the upper part of the housing 310. The sensing coil 710 may be located in the sensing coil coupling portion 315 of the housing 310. The sensing coil 710 may be located along the top of the housing 310. The sensing coil 710 may have a closed curve shape as an example, but is not limited thereto. The sensing coil 710 may be positioned spaced apart from the AF coil 220. Through this structure, when power is applied to the AF coil 220, an induced voltage can be generated in the sensing coil 710. A voltage depending on the distance between the sensing coil 710 and the AF coil 220 may be induced in the sensing coil 710. That is, the voltage induced in the sensing coil 710 may vary depending on the distance between the sensing coil 710 and the AF coil 220. In this embodiment, the movement and/or position of the bobbin 210 can be detected simply by measuring the voltage induced in the sensing coil 710 using this feature. The movement and/or position of the bobbin 210 detected in this way may be used for an autofocus feedback function.

The sensing coil 710 may be connected to the substrate 420 by the third support unit 630 and the fourth support unit 640. Through this structure, the induced voltage induced in the sensing coil 710 by the high frequency current supplied to the AF coil 220 can be measured.

The high-frequency current applicator may apply a high-frequency current to the AF coil 220. That is, the high-frequency current applicator may apply a high-frequency current such as an impulse current to the AF coil 220. At this time, the high-frequency current applied to the AF coil 220 may induce a voltage in the sensing coil 710 without affecting the movement of the bobbin 210. That is, the high-frequency current applicator can generate an induced voltage in the sensing coil 710 without affecting the autofocus driving of the bobbin 210 by applying a high-frequency current to the AF coil 220. The high-frequency current applicator may supply high-frequency current to the AF coil 220 at predetermined time intervals.

The voltage detection unit may detect the voltage induced in the sensing coil 710. That is, the voltage detection unit detects the voltage induced in the sensing coil 710 and the sensed value is sent to the control unit, so that the control unit can determine the position of the bobbin 210.

The OIS sensor unit may include an OIS sensor 720. The OIS sensor 720 can detect the movement of the second movable person 300. The OIS sensor 720 may include a Hall sensor. The OIS sensor 720 can detect the driving magnet 320. The OIS sensor 720 may be accommodated in the sensor receiving portion 412 of the base 410. The OIS sensor 720 may be coupled to the lower surface of the substrate 420. The OIS sensor 720 may include a first-axis sensor and a second-axis sensor disposed to detect movement of the housing 310 in both the x-axis and y-axis directions.

The terminal unit 800 may be combined with the substrate 420. The terminal unit 800 may be combined with the OIS support member 600. At least a portion of the terminal unit 800 may be formed of a conductive member. The OIS support member 600 and the substrate 420 coupled to the terminal unit 800 may be electrically conductive.

The terminal unit 800 may include a first coupling portion 810 coupled to the substrate 420. The terminal unit 800 may include a second coupling portion 820 coupled to the OIS support member 600. The terminal unit 800 may include a connection portion 830 connecting the first coupling portion 810 and the second coupling portion 820. The terminal unit 800 may include a bent portion 840 that extends downward from the first coupling portion 810 and is in contact with the inner surface of the base 410 forming the first through hole 4132. Additionally, the terminal unit 800 may include a third coupling portion 850 that extends outward from the bent portion 840 and is at least partially exposed to the side of the base 410.

The first coupling portion 810 may be coupled to the substrate 420 . The first coupling portion 810 may be coupled to the lower surface of the substrate 420 by soldering and/or welding. The first coupling portion 810 may be in surface contact with the lower surface of the substrate 420 at least partially. The first coupling portion 810 may include a through hole in which the solder ball is accommodated. The first coupling portion 810 may have a rectangular shape. However, it is not limited to this.

The second coupling portion 820 may be located lower than the first coupling portion 810. The second coupling portion 820 may be located lower than the first coupling portion 810 coupled to the lower surface of the substrate 420. That is, the second coupling portion 820 may be located lower than the substrate 420. In this embodiment, the movable section of the OIS support member 600 can be additionally secured by the height difference between the second coupling portion 820 and the substrate 420. That is, compared to the case where the OIS support member 600 is coupled to the substrate 420, when the OIS support member 600 is coupled to the second coupling portion 820 of the terminal unit 800, the OIS support member 600 )'s operating length can be increased.

The second coupling portion 820 may include an extension portion 821 extending laterally from the bottom of the connecting portion 830. The second coupling portion 820 may include an inclined portion 822 that obliquely extends from the extension portion 821. The second coupling portion 820 is formed on the inclined portion 822 and may include a coupling hole 823 coupled to the OIS support member 600.

The extension portion 821 may extend laterally from the bottom of the connection portion 830. The extension portion 821 may connect the connection portion 830 and the inclined portion 822. The inclined portion 822 may extend obliquely from the extension portion 821 . The inclined portion 822 may extend horizontally and obliquely from the extension portion 821. The inclined portion 822 may extend obliquely horizontally and/or vertically from the extension portion 821 . The inclined portion 822 may extend from the extension portion 821 with the same width. The coupling hole 823 may be formed in the inclined portion 822. The coupling hole 823 may be coupled to the OIS support member 600. A solder ball coupled to the OIS support member 600 may be coupled to the coupling hole 823. A solder portion or solder ball connecting the OIS support member 600 and the second coupling portion 820 may be located above and/or below the coupling hole 823. That is, soldering may be performed on the upper and/or lower side of the coupling hole 823. At this time, a portion of the soldered portion may move from the upper side to the lower side or from the lower side to the upper side through the coupling hole 823.

The connection portion 830 may connect the first coupling portion 810 and the second coupling portion 820. The connection portion 830 may extend downward from one end of the first coupling portion 810. The connection portion 830 may extend upward from one end of the second coupling portion 820. The connection part 830 may connect the second coupling part 820 and the first coupling part 810 so that the second coupling part 820 is located lower than the first coupling part 810. At least a portion of the connection portion 830 may be formed to be round. The connection portion 830 may be formed by bending. However, it is not limited to this.

The bent portion 840 may extend downward from the first coupling portion 810. The bent portion 840 may contact the inner surface of the base 410 forming the first through hole 4132. The bent portion 840 may be in surface contact with the inner surface of the base 410. The bent portion 840 may be formed in a shape corresponding to the second through hole 4131 of the base 410. Through this structure, the bent portion 840 can guide the terminal unit 800 to be coupled to the correct position of the base 410.

In this embodiment, as shown in FIG. 5, one connection portion 830 and three bent portions 840 may extend from the first coupling portion 810. That is, the connection portion 830 may be formed on one of the four sides of the first coupling portion 810, and the bent portion 840 may be formed on the remaining three sides. However, it is not limited to this, and the number and/or location of the connecting portion 830 and the bent portion 840 may be changed.

The third coupling portion 850 may extend outward from the bent portion 840. At least a portion of the third coupling portion 850 may be exposed to the side of the base 410. The third coupling portion 850 may be electrically connected to an external component.

Below, the operation of the camera module according to this embodiment will be described.

First, the autofocus function of the camera module according to this embodiment will be described. When power is supplied to the AF coil 220, the AF coil 220 moves relative to the driving magnet 320 due to electromagnetic interaction between the AF coil 220 and the driving magnet 320. At this time, the bobbin 210 to which the AF coil 220 is coupled moves integrally with the AF coil 220. That is, the bobbin 210 with the lens module coupled to the inside moves in the vertical direction with respect to the housing 310. This movement of the bobbin 210 results in the lens module moving closer to or farther away from the image sensor, thereby performing focus adjustment on the subject.

Meanwhile, autofocus feedback can be applied to more precisely realize the autofocus function of the camera module according to this embodiment. A voltage is induced in the sensing coil 710 mounted on the housing 310 by a high-frequency current applied to the AF coil 220. Meanwhile, when a driving current is applied to the AF coil 220 and the bobbin 210 moves relative to the housing 310, the value of the voltage induced in the sensing coil 710 may change. At this time, the supply of high-frequency current to the AF coil 220 may be based on a preset time interval. Meanwhile, the voltage detection unit detects the voltage value induced in the sensing coil 710 and transmits it to the control unit. The control unit determines whether to perform additional movement of the bobbin 210 based on the received voltage value. Since this process occurs in real time, the autofocus function of the camera module according to this embodiment can be performed more precisely through autofocus feedback.

The hand shake correction function of the camera module according to this embodiment will be described. When power is supplied to the OIS coil 430, the driving magnet 320 moves relative to the OIS coil 430 due to electromagnetic interaction between the OIS coil 430 and the driving magnet 320. At this time, the housing 310 to which the driving magnet 320 is coupled moves integrally with the driving magnet 320. That is, the housing 310 moves in the horizontal direction with respect to the base 410. Meanwhile, at this time, the housing 310 may be induced to tilt with respect to the base 410. This movement of the housing 310 results in the lens module moving relative to the image sensor in a direction parallel to the direction in which the image sensor is placed (direction perpendicular to the optical axis of the lens module), so the camera shake correction function is performed. .

Meanwhile, hand shake correction feedback may be applied to more precisely realize the hand shake correction function of the camera module according to this embodiment. The OIS sensor 720 mounted on the base 410 detects the magnetic field of the driving magnet 320 fixed to the housing 310. Meanwhile, when the housing 310 moves relative to the base 410, the amount of magnetic field detected by the OIS sensor 720 changes. Meanwhile, the pair of OIS sensors 720 detects the amount of movement or position of the housing 310 in the horizontal direction (x-axis and y-axis directions) in the above-mentioned manner and transmits the detection value to the control unit. The control unit determines whether to perform additional movement of the housing 310 based on the received detection value. Since this process occurs in real time, the camera module's camera module according to this embodiment's camera shake correction function can be performed more precisely through hand shake correction feedback.

Hereinafter, the effect of the lens driving device according to this embodiment will be described with reference to FIGS. 10 and 11.

FIG. 10 is a conceptual diagram illustrating the effect of the lens driving device according to this embodiment, and FIG. 11 is a conceptual diagram illustrating a comparative example for comparison with this embodiment.

Referring to FIG. 10, in the lens driving device according to this embodiment, the OIS support member 600 is coupled to the upper support member 510 and the second coupling portion 820 of the terminal unit 800. In more detail, the upper end of the OIS support member 600 is coupled to the upper support member 510, and the lower end of the OIS support member 600 is coupled to the second coupling portion 820 of the terminal unit 800. At this time, the second coupling portion 820 is located lower than the substrate 420. Meanwhile, in the structure of the present embodiment mentioned above, the movable section of the OIS support member 600 is defined as the distance between the upper support member 510 and the second coupling portion 820 of the terminal unit 800. In this embodiment, when the upper end of the OIS support member 600 (the joint portion of the OIS support member 600 and the upper support member 510) moves by the flow distance d, the first Deflection equal to the angle (θ1) occurs.

Referring to FIG. 11, in the lens driving device according to the comparative example, the OIS support member 600 is coupled to the upper support member 510 and the substrate 420. In more detail, the upper end of the OIS support member 600 is coupled to the upper support member 510, and the lower end of the OIS support member 600 is coupled to the upper surface of the substrate 420. At this time, the height of the substrate 420 in the comparative example (height from the bottom of the base 410) corresponds to the height of the substrate 420 in the present embodiment. That is, the height of the substrate 420 of the comparative example is higher than the height of the second coupling portion 820 of the terminal unit 800 of the present embodiment. Meanwhile, in the structure of the comparative example mentioned above, the movable section of the OIS support member 600 is defined as the distance between the upper support member 510 and the substrate 420. In the comparative example, when the upper end of the OIS support member 600 moves by the moving distance d, the OIS support member 600 is bent by the second angle θ2.

At this time, the second angle (θ2) is greater than the first angle (θ1). That is, the OIS support member 600 according to the comparative example receives greater stress than the OIS support member 600 according to the present embodiment when driven for the same flow distance d. In other words, the OIS support member 600 according to the present embodiment receives less stress than the OIS support member 600 according to the comparative example when driven for the same flow distance d.

In the OIS structure of the comparative example, one end of the OIS support member 600 is fixed to the upper support member 510 by soldering, and the other end is fixed to the substrate 420 by soldering. Accordingly, the length of the movable part of the OIS support member 600 is determined by the distance between the upper support member 510 and the substrate 420. As the structure of the smartphone becomes thinner, the distance between the upper support member 510 and the substrate 420 becomes shorter, and the length of the movable part of the OIS support member 600 also becomes shorter. At this time, the stress increases in the OIS support member 600 due to increased bending occurring for the same repetitive flow distance (d). In this way, when the stress acting on the OIS support member 600 increases, more power is required to drive it, and the time required to drive it also increases, which is a problem. In addition, if the stress acting on the OIS support member 600 continues for a long time in an increased state, the OIS support member 600 may be damaged, which is problematic.

This embodiment proposes an assembly structure that can minimize the shortening of the length of the OIS support member 600 even as the structure of the smartphone becomes thinner. In this embodiment, one end of the OIS support member 600 is fixed to the upper support member 510 by soldering, and the other end is soldered to the terminal unit 800. At this time, the terminal unit 800 is fixed to the base 410, and the soldering position of the terminal unit 800 and the OIS support member 600 is formed lower than the substrate 420, so the OIS support member 600 is attached to the substrate ( The length of the movable part of the OIS support member 600 can be increased compared to the structure soldered to 420).

In the above, just because all the components constituting the embodiment of the present invention have been described as being combined or operated in combination, the present invention is not necessarily limited to this embodiment. That is, as long as it is within the scope of the purpose of the present invention, all of the components may be operated by selectively combining one or more of them. In addition, terms such as “include,” “comprise,” or “have” described above mean that the corresponding component may be present, unless specifically stated to the contrary, and thus do not exclude other components. Rather, it should be interpreted as being able to include other components. All terms, including technical or scientific terms, unless otherwise defined, have the same meaning as generally understood by a person of ordinary skill in the technical field to which the present invention pertains. Commonly used terms, such as terms defined in a dictionary, should be interpreted as consistent with the contextual meaning of the related technology, and should not be interpreted in an idealized or overly formal sense unless explicitly defined in the present invention.

The above description is merely an illustrative explanation of the technical idea of the present invention, and various modifications and variations will be possible to those skilled in the art without departing from the essential characteristics of the present invention. Accordingly, the embodiments disclosed in the present invention are not intended to limit the technical idea of the present invention, but rather to explain it, and the scope of the technical idea of the present invention is not limited by these embodiments. The scope of protection of the present invention should be interpreted in accordance with the claims below, and all technical ideas within the equivalent scope should be construed as being included in the scope of rights of the present invention.

100: cover member 200: first movable member
300: second movable 400: stator
500: AF support member 600: OIS support member
800: terminal unit

Claims (21)

Base;
a mover disposed on the base and including a first coil;
a first support member movably supporting the mover with respect to the base and electrically connected to the first coil;
a second coil disposed on the upper surface of the base; and
Includes a terminal unit disposed on the base,
The terminal unit includes a second coupling portion coupled to the first support member and a connection portion bent and extending from the second coupling portion,
The first support member passes through a first through hole formed in the base,
The second coupling portion is disposed lower than the upper surface of the base,
The second coupling portion of the terminal unit includes a coupling hole formed at a position corresponding to the first through hole of the base. According to paragraph 1,
A lens driving device comprising a substrate disposed on the upper surface of the base and including the second coil. According to paragraph 2,
The terminal unit includes a first coupling portion coupled to the substrate,
The connection part of the terminal unit connects the first coupling part and the second coupling part. According to paragraph 1,
It includes a soldering part that couples the first support member and the second coupling part of the terminal unit,
A lens driving device wherein the soldering part is disposed at a lower portion of the coupling hole of the second coupling part of the terminal unit. According to paragraph 1,
The first support member passes through the coupling hole of the second coupling part and is connected to the terminal unit. According to paragraph 3,
The base is a lens driving device including a second through hole or groove formed at a position corresponding to the first coupling part. According to paragraph 3,
A lens driving device wherein the connection portion extends downward from the first coupling portion and is connected to the second coupling portion. According to clause 6,
The terminal unit is a lens driving device that extends downward from the first coupling portion and includes a bent portion in contact with one surface of the base. According to paragraph 1,
The terminal unit is a lens driving device including a third coupling portion at least partially exposed to a side of the base. According to paragraph 1,
The base is a lens driving device including a receiving groove for accommodating the terminal unit. According to paragraph 1,
The second coupling portion includes an extension portion extending laterally from the connection portion and an inclined portion extending horizontally and obliquely from the extension portion,
A lens driving device wherein the coupling hole is formed in the inclined portion. According to paragraph 1,
The operator is
a housing disposed on the base;
a bobbin disposed within the housing; and
It includes an upper support member coupled to the bobbin and the housing and coupled to the first coil,
A lens driving device wherein the first support member is coupled to the upper support member. According to clause 12,
A lens driving device wherein the mover is disposed in the housing and includes a magnet facing the first coil. According to clause 13,
The first support member includes first to fourth support units spaced apart from each other,
The first and second support units are electrically connected to the first coil through the upper support member,
The first to fourth support units are a lens driving device disposed at each of four corners of the housing. According to clause 14,
It includes a third coil disposed in the housing and spaced apart from the first coil,
The third and fourth support units are electrically connected to the third coil. According to paragraph 1,
The second coupling portion is arranged parallel to the first direction,
The connection portion is a lens driving device including a portion extending in a direction different from the first direction. According to paragraph 1,
The connection part is a lens driving device including a part extending from the second coupling part in the optical axis direction. Base;
a housing disposed on the base;
a bobbin disposed within the housing;
a first coil disposed on the bobbin;
A magnet disposed in the housing;
a second coil disposed on the upper surface of the base;
an upper support member connecting the housing and the bobbin;
a terminal unit coupled to the base; and
It includes a first support member connecting the upper support member and the terminal unit,
The terminal unit includes a second coupling portion coupled to the first support member and a connection portion bent and extending from the second coupling portion,
The first support member passes through a first through hole formed in the base,
The second coupling portion is disposed lower than the upper surface of the base,
The second coupling portion of the terminal unit includes a coupling hole formed at a position corresponding to the first through hole of the base. According to clause 18,
The second coupling portion is arranged parallel to the first direction,
The connection portion is a lens driving device including a portion extending in a direction different from the first direction. printed circuit board;
An image sensor disposed on the printed circuit board;
The lens driving device of any one of claims 1 to 19 disposed on the printed circuit board; and
A camera module including a lens coupled to the lens driving device. main body;
a display unit disposed on the main body; and
An optical device comprising the camera module of claim 20 disposed in the main body.

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