Lens driving device, camera module and optical apparatus

Abstract

The present embodiment comprises: a base; a movable member located on the upper side of the base and including a first coil; a first support member that supports the movable member movably 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 connecting part connecting the first coupling part and the second coupling part, wherein the second coupling part may be located lower than the first coupling part.

Description

Technology Field

[0001] The present embodiment relates to a lens driving device, a camera module, and an optical device. Background Technology

[0002] The following description provides background information regarding the present embodiment and does not describe prior art.

[0003] As smartphones have become widely adopted and wireless internet services have been commercialized, consumer demands related to smartphones are diversifying, leading to the installation of various types of accessory devices.

[0004] A representative example among these is the camera module, which captures subjects as photos or videos. Recently, there has been a demand for Optical Image Stabilization (OIS) functions in camera modules that automatically correct user hand shake.

[0005] Meanwhile, in the camera module equipped with the aforementioned image stabilization function, an elastic member is provided to elastically support a movable member on which a lens module is mounted relative to a stator so that the lens module can move in a direction parallel to the image sensor.

[0006] However, as the structure of smartphones has recently become thinner and the length of the camera module in the z-axis direction has been reduced, the length of the elastic member is not sufficiently secured, which is a problem.

[0007] (Patent Document 1) US 2013-0016427 A1 The problem to be solved

[0008] In order to solve the above-mentioned problem, the present embodiment aims to provide a lens driving device that secures the operating length of an elastic member for shake correction function even inside a thin smartphone.

[0009] In addition, the present invention aims to provide a camera module and an optical device including a lens driving device according to the present embodiment. means of solving the problem

[0010] A lens driving device according to the present embodiment comprises: a base; a movable member located on the upper side of the base and including a first coil; a first support member that supports the movable member movably 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 part coupled to the substrate, a second coupling part coupled to the first support member, and a connecting part connecting the first coupling part and the second coupling part, 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.

[0011] The second coupling part may include a coupling hole formed at a position corresponding to the first through hole.

[0012] The first support member can be connected to the terminal unit by passing through the coupling hole formed in the second coupling part.

[0013] The above base may include a second through hole or groove formed at a position corresponding to the first coupling part.

[0014] The above connecting portion may extend downward from the first connecting portion and be connected to the second connecting portion.

[0015] The terminal unit may further include a bent portion that extends downward from the first coupling portion and contacts one surface of the base.

[0016] 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 exposed to the side of the base.

[0017] The above base may include a receiving groove that accommodates the terminal unit, formed by a portion of the lower surface being sunken upward.

[0018] The second coupling portion further includes an extension portion extending laterally from the connecting portion and an inclined portion extending horizontally at an angle from the extension portion, and the coupling hole may be formed in the inclined portion.

[0019] The above-described actuator comprises 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.

[0020] The above-described actuator comprises: a bobbin to which the first coil is located and to which the lens module is coupled; a housing spaced apart from the bobbin; and a magnet located in the housing and facing the first coil, wherein a second coil facing the magnet is located on the substrate, and a second support member may be coupled to the bobbin and the housing to support the bobbin movably with respect to the housing.

[0021] The apparatus further includes a third coil located in the housing and spaced apart from the first coil, wherein 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 second support member, and the third and fourth support units can be electrically connected to the third coil.

[0022] The first to fourth support units may be located at each of the four corner portions formed between the four sides of the housing.

[0024] A camera module according to the present embodiment comprises: a printed circuit board; an image sensor mounted on the printed circuit board; a base located on the printed circuit board; a movable member located on the upper side of the base and including a first coil; a first support member that supports the movable member movably 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 part coupled to the substrate, a second coupling part coupled to the first support member, and a connecting part connecting the first coupling part and the second coupling part, 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.

[0026] An optical device according to an embodiment comprises a main body, a display unit located on the outside of the main body, and a camera module that is partially accommodated in the main body, wherein the camera module comprises: a printed circuit board; an image sensor mounted on the printed circuit board; a base located on the printed circuit board; a movable member located on the upper side of the base and including a first coil; a first support member that supports the movable member movably 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 comprises a first coupling part coupled to the substrate, a second coupling part coupled to the first support member, and a connecting part connecting the first coupling part and the second coupling part, 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. Effects of the invention

[0027] Through this embodiment, the operating length of the elastic member for the hand tremor correction function can be secured. Accordingly, the phenomenon of excessive stress acting on the elastic member can be prevented. Brief explanation of the drawing

[0028] FIG. 1 is a perspective view of a lens driving device according to the present embodiment. FIG. 2 is an exploded view of a lens driving device according to the present embodiment. FIG. 3 is a perspective view of the lens driving device according to the present embodiment with the cover member removed. FIG. 4 is an exploded perspective view illustrating a part of the configuration of a lens driving device according to the present embodiment. FIG. 5 is a perspective view illustrating the OIS support member and terminal unit of a lens driving device according to the present embodiment. FIG. 6 is a perspective view showing the combined state of the lens driving device illustrated in FIG. 4. FIG. 7 is a plan view illustrating the lens driving device shown in FIG. 6. Figure 8 is a cross-sectional view of Figure 7 viewed in the XY direction. FIG. 9 is a bottom view of a lens driving device according to the present embodiment. FIG. 10 is a conceptual diagram illustrating the effect of a lens driving device according to the present embodiment. FIG. 11 is a conceptual diagram illustrating a comparative example for comparison with the present embodiment. Specific details for implementing the invention

[0029] Hereinafter, some embodiments of the present invention will be described with reference to exemplary drawings. In writing reference numerals for the components of each drawing, the same components are indicated by the same reference numeral whenever possible, even if they are shown in different drawings.

[0030] In addition, terms such as first, second, A, B, (a), (b), etc., may be used when describing the components of the embodiments of the present invention. These terms are intended merely to distinguish the components from other components, and the essence, order, or sequence of the components is not limited by these terms. Where it is stated that a component is "connected," "combined," or "connected" to another component, it should be understood that the component may be directly connected, combined, or connected to the other component, but that another component may also be "connected," "combined," or "connected" between the component and the other component.

[0031] As used below, "optical axis direction" 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 the up-down direction, z-axis direction, etc.

[0032] As used below, the "auto focus function" is defined as a function that focuses on a subject by adjusting the distance to the image sensor through moving the lens module along the optical axis according to the distance to the subject, so that a clear image of the subject can be obtained on the image sensor. Meanwhile, "auto focus" may be used interchangeably with "AF (Auto Focus)."

[0033] In the following, any one of the AF coil (220), the driving magnet (320), and the OIS coil (430) may be referred to as the "first driving unit," another as the "second driving unit," and the remaining one as the "third driving unit."

[0034] In the following, any one of the AF coil (220), OIS coil (430), and sensing coil (710) may be referred to as the "first coil," another as the "second coil," and the remaining one as the "third coil."

[0035] In the following, either one of the AF support member (500) and the OIS support member (600) may be referred to as the "first support member" and the other as the "second support member".

[0036] In the following description, the AF support member (500) is described separately from the movable part (200, 300), but since the AF support member (500) is also a member that moves integrally with the movable part (200, 300) when OIS is driven, the AF support member (500) can be described as a component of the movable part (200, 300).

[0038] Hereinafter, the configuration of the optical device according to the present embodiment will be described.

[0039] The optical device according to the present embodiment may be a mobile phone, smartphone, portable smart device, digital camera, laptop computer, digital broadcasting terminal, PDA (Personal Digital Assistants), PMP (Portable Multimedia Player), navigation device, etc., but is not limited thereto, and any device for capturing images or photographs is possible.

[0040] An optical device according to the present embodiment may include a main body (not shown), a display unit (not shown) disposed on one surface of the main body for displaying information, and a camera (not shown) installed on the main body for capturing images or photographs and having a camera module (not shown).

[0041] Hereinafter, the configuration of the camera module according to the present embodiment is described.

[0042] 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).

[0043] 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, one component of the lens module is not limited to a lens barrel, and any holder structure capable of supporting one or more lenses is possible. The lens module may be coupled to a lens driving device and may move together with a part of the lens driving device. The lens module may be coupled to the inside of the lens driving device. The lens module may be screw-coupled to the lens driving device. The lens module may be coupled to the lens driving device by an adhesive (not shown). Meanwhile, light passing through the lens module may be irradiated onto an image sensor.

[0044] An infrared filter may be located in the opening (411) of the base (410). Alternatively, the infrared filter may be located in a holder member (not shown) provided separately from the base (410). The infrared filter may 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 formed from a film material or a glass material. The infrared filter may be formed by coating an infrared blocking coating material onto a flat optical filter, such as a cover glass for protecting the imaging surface or a cover glass. However, it is not limited thereto.

[0045] The printed circuit board can support a lens driving device. An image sensor may be mounted on the printed circuit board. For example, an image sensor may be located on the inner side of the upper surface of the printed circuit board, and a sensor holder (not shown) may be located on the outer side of the upper surface of the printed circuit board. A lens driving device may be located on the upper side of the sensor holder. Alternatively, a lens driving device may be located on the outer side of the upper surface of the printed circuit board, and an image sensor may be located on the inner side of the upper surface of the printed circuit board. Through such a structure, light passing through a lens module housed inside the lens driving device can be irradiated onto an image sensor mounted on the printed circuit board. The printed circuit board can 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.

[0046] The image sensor can be mounted on a printed circuit board. The image sensor can be positioned so that its optical axis aligns with that of the lens module. Through this, the image sensor can acquire light that has passed through the lens module. The image sensor can output the incident light as an image. The image sensor may be, for example, a CCD (charge coupled device), a MOS (metal oxide semiconductor), a CPD, and a CID. However, the types of image sensors are not limited to these.

[0047] 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 forming the lens driving device. The control unit can 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 can control the lens driving device to move the lens module in the direction of the optical axis, move it in a direction perpendicular to the direction of the optical axis, or tilt it. Furthermore, the control unit can perform feedback control of the autofocus function and the image stabilization function. More specifically, 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 controls the voltage or current applied to the AF coil (220) and / or OIS coil (430) to provide a more precise autofocus function and / or image stabilization function.

[0048] Hereinafter, the configuration of the lens driving device according to the present embodiment will be described with reference to the drawings.

[0049] FIG. 1 is a perspective view of a lens driving device according to the present embodiment, FIG. 2 is an exploded perspective view of a lens driving device according to the present embodiment, FIG. 3 is a perspective view of a lens driving device according to the present embodiment with the cover member removed, FIG. 4 is an exploded perspective view showing a part of the configuration of a lens driving device according to the present embodiment, FIG. 5 is a perspective view showing an OIS support member and a terminal unit of a lens driving device according to the present embodiment, FIG. 6 is a perspective view showing a combined state of the lens driving device shown in FIG. 4, FIG. 7 is a plan view showing the lens driving device shown in FIG. 6, FIG. 8 is a cross-sectional view of FIG. 7 viewed in the XY direction, and FIG. 9 is a bottom view of a lens driving device according to the present embodiment.

[0050] The lens driving device according to the present embodiment may include a cover member (100), a movable member (200, 300), a stator (400), a support member (500, 600), a sensor unit, and a terminal unit (800). However, in the lens driving device according to the present embodiment, one or more of the cover member (100), the movable member (200, 300), the stator (400), the support member (500, 600), the sensor unit, and the terminal unit (800) may be omitted. In particular, the sensor unit may be omitted as a configuration for an autofocus feedback function and / or a hand image correction feedback function.

[0051] The cover member (100) can accommodate a housing (310) and a bobbin (210) in its inner space. The cover member (100) can be coupled to a base (410). The cover member (100) can form the exterior of a lens driving device. The cover member (100) may have a cuboid shape with an open bottom. However, it is not limited thereto. The cover member (100) may be formed from a metal material, for example. More specifically, the cover member (100) may be provided as a metal plate. In this case, the cover member (100) can block electromagnetic interference (EMI). Due to this feature 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 entering the inside of 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 thereto.

[0052] The cover member (100) may include a top 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 on a stepped portion (415) of the base (410). The cover member (100) may be mounted on the base (410) such that its inner surface is in close contact with part or all of the side of the base (410). In the internal space formed by the cover member (100) and the base (410), a movable member (200, 300), a fixed member (400), and a supporting member (500, 600) may be located. Through such a structure, the cover member (100) can protect internal components from external impacts while simultaneously preventing the penetration of external contaminants. However, it is not limited thereto, and the lower end of the side plate (120) of the cover member (100) may be directly connected to a printed circuit board located on the lower side of the base (410).

[0053] The cover member (100) may include an opening (101) formed on the top plate (110) to expose a lens module. The opening (101) may be provided with a shape corresponding to the lens module. The size of the opening (101) may be formed 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 may be acquired as an image by an image sensor.

[0054] The movable member (200, 300) can move relative to the stator (400). The movable member (200, 300) can be located on the upper side of the base (410). The movable member (200, 300) may include a bobbin (210) to which a lens module is coupled. The movable member (200, 300) may include a bobbin (210) to which a lens module is coupled and to which an AF coil (220) is located. The movable member (200, 300) may include an AF coil (220). The movable member (200, 300) may include a housing (310) spaced apart from the bobbin (210). The movable member (200, 300) may include a driving magnet (320) located in the housing (310) and facing the AF coil (220). The actuator (200, 300) may include an upper support member (510) that is coupled to the bobbin (210) and the housing (310) and coupled to the AF coil (220). The AF support member (500) may be described as a component of the actuator (200, 300) as a configuration that moves integrally with the bobbin (210) and the housing (310) when driving the OIS. However, the AF support member (500) may be described as a configuration separate from the actuator (200, 300).

[0055] The operator (200, 300) may include a first operator (200) and a second operator (300).

[0056] The first actuator (200) can move to drive autofocus. The first actuator (200) may include a bobbin (210) and an AF coil (220). The first actuator (200) may include a bobbin (210) that is coupled to a lens module. The first actuator (200) may include an AF coil (220) that is located on the bobbin (210) and moves by electromagnetic interaction with a driving magnet part (320).

[0057] The bobbin (210) can be accommodated in the internal space of the cover member (100). The bobbin (210) can be coupled with a lens module. More specifically, the outer surface of the lens module can be coupled to the inner surface of the bobbin (210). An AF coil (220) can be located on the bobbin (210). An AF coil (220) can be coupled to the bobbin (210). An upper support member (600) can be coupled to the upper part of the bobbin (210). The bobbin (210) can be located inside the housing (310). The bobbin (210) can be moved relative to the housing (310) in the direction of the optical axis.

[0058] The bobbin (210) may include a lens receiving portion (211), a first driving portion coupling portion (212), an upper coupling portion (213), and a lower coupling portion (not shown).

[0059] The bobbin (210) may include an upper and lower open lens receiving portion (211) on the inner side. The bobbin (210) may include a lens receiving portion (211) formed on the inner side. A lens module may be coupled to the lens receiving portion (211). On the inner surface of the lens receiving portion (211), screw threads with a shape corresponding to the screw threads formed on the outer surface of the lens module may be formed. That is, the lens receiving portion (211) may be screw-coupled 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 (UV) light or heat. That is, the lens module and the bobbin (210) may be bonded by UV-curing epoxy and / or heat-curing epoxy.

[0060] The bobbin (210) may include a first drive unit coupling part (212) on which an AF coil (220) is disposed. The first drive unit coupling part (212) may be formed integrally with the outer surface of the bobbin (210). Additionally, the first drive unit coupling part (212) may be formed continuously along the outer surface of the bobbin (210) or spaced apart at predetermined intervals. As an example, the first drive unit coupling part (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). In this case, the AF coil (220) may be wound linearly in the first drive unit coupling part (212). As a variation, the first drive unit coupling part (212) may be formed as an upper or lower open type. At this time, the AF coil (220) can be inserted and coupled to the first driving unit coupling part (212) through the open part in a pre-wound state.

[0061] The bobbin (210) may include an upper coupling portion (213) that is coupled to an upper support member (510). The upper coupling portion (213) may be coupled to an inner portion (512) of the upper support member (510). As an example, a projection of the upper coupling portion (213) may be inserted into a groove or hole of the inner portion (512) of the upper support member (510) to be coupled. At this time, the projection of the upper coupling portion (213) may be heat-fused while inserted into the hole of the inner portion (512) to fix the upper support member (510).

[0062] The bobbin (210) may include a lower connecting portion that is coupled to a lower support member (520). The lower connecting portion may be coupled to an inner portion (522) of the lower support member (520). As an example, a projection of the lower connecting portion may be inserted into a groove or hole of the inner portion (522) of the lower support member (520) to be coupled. At this time, the projection of the lower connecting portion may be heat-fused while inserted into the hole of the inner portion (522) to fix the lower support member (520).

[0063] The AF coil (220) may be positioned 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 driving unit coupling part (212) and wound on the outer surface of the bobbin (210). In addition, as another embodiment, the AF coil (220) may be arranged on the outer surface of the bobbin (210) such that four coils are independently provided and two adjacent coils form a 90° angle with each other. The AF coil (220) may be positioned opposite the driving magnet (320). The AF coil (220) may be positioned to have electromagnetic interaction with the driving magnet (320). The AF coil (220) may move the bobbin (210) relative to the housing (310) through electromagnetic interaction with the driving magnet (320).

[0064] The AF coil (220) may include a pair of lead wires for power supply. At this time, the pair of lead wires 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) may receive power through the upper support member (510). Power may be supplied from the substrate (420) to the AF coil (220) through the first support unit (610) coupled to the first upper support unit (5101) and the second support unit (620) coupled to the second upper support unit (5102). More specifically, the current supplied to the terminal portion (412) of the substrate (420) can be sequentially transmitted to the first support unit (610), the first upper support unit (5101), the AF coil (220), the second upper support unit (5102), the second 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).

[0065] The second movable member (300) can move to drive the hand tremor correction. When driving the hand tremor correction, the first movable member (200) can move integrally with the second movable member (300). The second movable member (300) can be positioned on the outside of the first movable member (200) and facing the first movable member (200). The second movable member (300) can move the first movable member (200) or move together with the first movable member (200). The second movable member (300) can be movably supported by a stator (400) located on the lower side. The second movable member (300) can be located in the inner space of the cover member (100).

[0066] The second actuator (300) may include a housing (310) and a driving magnet (320). The second actuator (300) may include a housing (310) located on the outside of the bobbin (210). Additionally, the second actuator (300) may include a driving magnet (320) located opposite the AF coil (220) and fixed to the housing (310).

[0067] 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 be, for example, a cuboid shape including four sides. However, the shape of the housing (310) may be provided in any shape that can be placed inside the cover member (100). The housing (310) may be formed of an insulating material and may be made as an injection molded product for productivity.

[0068] The housing (310) may be located on the outside of the bobbin (210). The housing (310) may be spaced apart from the bobbin (210). However, in this case, a part of the bobbin (210) and a part of the housing (310) may come into contact as the bobbin (210) moves. The housing (310) may be located on the upper side of the base (410). The housing (310) may be positioned at a certain distance from the cover member (100) as a moving part for OIS driving. 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 attached to the upper side of the housing (310). A lower support member (520) can be attached to the lower part of the housing (310).

[0069] The housing (310) may include an inner space (311), a second driving unit coupling part (312), an upper coupling part (313), a lower coupling part (not shown), and a sensing coil coupling part (315).

[0070] The housing (310) is open at the top and bottom sides to accommodate the first movable member (200) so that it can move up and down. The housing (310) may include an inner space (311) that is open at the top and bottom. A bobbin (210) may be movably placed 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 surface of the housing (310) forming the inner space (311) may be positioned spaced apart from the outer surface of the bobbin (210).

[0071] The housing (310) may include a second drive unit coupling part (312) formed on the side in a shape corresponding to the drive magnet (320) and accommodating the drive magnet (320). The second drive unit coupling part (312) can accommodate and fix the drive magnet (320). The drive magnet (320) may be fixed to the second drive unit coupling part (312) by an adhesive (not shown). Meanwhile, the second drive unit coupling part (312) may be located on the inner circumference of the housing (310). In this case, there is an advantage in electromagnetic interaction with the AF coil (220) located inside the drive magnet (320). Additionally, the second drive unit coupling part (312) may be in a form with an open bottom, as an example. In this case, there is an advantage in the electromagnetic interaction between the OIS coil (430) located below the driving magnet (320) and the driving magnet (320). The second driving member coupling part (312) may be provided in four parts, for example. A driving magnet (320) may be coupled to each of the four second driving member coupling parts (312).

[0072] The housing (310) may include an upper coupling portion (313) that is coupled to an upper support member (510). The upper coupling portion (313) may be coupled to an outer portion (511) of the upper support member (510). As an example, a projection of the upper coupling portion (313) may be inserted into a groove or hole of the outer portion (511) of the upper support member (510) to be coupled. At this time, the projection of the upper coupling portion (313) may be heat-fused while inserted into the hole of the outer portion (511) to fix the upper support member (510).

[0073] The housing (310) may include a lower coupling portion that is coupled to a lower support member (520). The lower coupling portion may be coupled to an outer portion (521) of the lower support member (520). As an example, a projection of the lower coupling portion may be inserted into a groove or hole of the outer portion (521) of the lower support member (520) to be coupled. At this time, the projection of the lower coupling portion may be heat-fused while inserted into the hole of the outer portion (521) to fix the lower support member (520).

[0074] The housing (310) may include a sensing coil coupling portion (315) to which a sensing coil (710) is coupled. A sensing coil (710) may be coupled to the sensing coil coupling portion (315). The sensing coil coupling portion (315) may be located on the upper part of the housing (310). The sensing coil coupling portion (315) may be located on the top of the housing (310). The sensing coil coupling portion (315) may be formed as a receiving groove in which a part of the outer surface of the housing (310) is recessed inward.

[0075] The driving magnet (320) can be accommodated in the internal space of the cover member (100). The driving magnet (320) can be positioned opposite the AF coil (220). The driving magnet (320) can move the AF coil (220) through electromagnetic interaction with the AF coil (220). The driving magnet (320) can be located in the housing (310). The driving magnet (320) can be fixed to the second driving member coupling part (312) of the housing (310). The driving magnet (320) can be arranged in the housing (310) such that four magnets are independently provided and two adjacent magnets form a 90° angle with each other. That is, the driving magnet (320) can promote efficient use of the internal volume through magnets mounted at equal intervals on four sides of the housing (310). Additionally, the driving magnet (320) may be attached to the housing (310) by an adhesive. However, it is not limited thereto.

[0076] The stator (400) can movably support the movable member (200, 300). The stator (400) can movably support the second movable member (300). 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).

[0077] The base (410) can be placed on a printed circuit board. The base (410) can be fixed to the printed circuit board by an adhesive for active alignment. The base (410) can be located on the lower side of the bobbin (210). The base (410) can be located on the lower side of the housing (310). The base (410) can support the second movable member (300). A printed circuit board can be located on the lower side of the base (410). The base (410) can perform the function of a sensor holder that protects an image sensor mounted on the printed circuit board.

[0078] The base (410) may include an opening (411), a sensor receiving portion (412), a foreign matter collecting portion (not shown), a terminal receiving portion (413), a support portion (414), and a stepped portion (415).

[0079] 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 attached to the opening (411) of the base (410). However, the infrared filter may also be attached to a separate sensor holder positioned at the bottom of the base (410).

[0080] The base (410) may include a sensor receiving portion (412) to which an OIS sensor (720) is coupled. That is, the OIS sensor (720) may be received in the sensor receiving portion (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 portions (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 both x-axis and y-axis movements of the housing (310).

[0081] The base (410) may include a foreign substance collecting part for collecting foreign substances that have entered the interior of the cover member (100). The foreign substance collecting part is located on the upper surface of the base (410) and may collect foreign substances in the inner space formed by the cover member (100) and the base (410) by including an adhesive material.

[0082] The base (410) may include a terminal receiving portion (413) that accommodates at least a portion of the terminal unit (800). The terminal receiving portion (413) may accommodate at least a portion of the terminal unit (800). Accordingly, the terminal receiving portion (413) may be formed in a shape corresponding to the terminal unit (800) in at least a portion.

[0083] The base (410) may include a second through hole (4131) in which the first coupling part (810) is located. The second through hole (4131) may be formed as a first groove as a variation. The base (410) may include a second through hole (4131) or a first groove in which the first coupling part (810) is located. The terminal receiving part (413) may include a second through hole (4131) in which the first coupling part (810) of the terminal unit (800) is located. The second through hole (4131) may be formed to penetrate the base (410) in an up-down direction (optical axis direction). The first coupling part (810) placed in the second through hole (4131) may be exposed to the upper side. In such a structure, the first coupling part (810) may 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 part (810).

[0084] 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 variation. 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 an up-and-down 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) can be coupled to the second coupling part (820) of the terminal unit (800) by passing through the through hole of the substrate (420) and the first through hole (4132). That is, the second coupling part (820) can be located on the lower side of the first through hole (4132). The first through hole (4132) can overlap with the second coupling part (820) in the vertical direction.

[0085] The base (410) may include a receiving groove (4133) that accommodates the second coupling part (820) and is formed by a portion of the lower surface being recessed upward. However, in a modified example, the receiving groove (4133) may be formed as a through hole by another groove that is recessed downward from the upper surface of the base (410). The terminal receiving part (413) may include a receiving groove (4133) that accommodates the second coupling part (820) and is formed by a portion of the lower surface being recessed upward. The receiving groove (4133) may be formed by a portion of the lower surface of the base (410) being recessed upward. The receiving groove (4133) may accommodate at least a portion of the second coupling part (820) of the terminal unit (800). The upper surface of the second coupling part (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 part (820) of the terminal unit (800). The receiving groove (4133) may be formed in a shape corresponding to the second coupling part (820). The first through hole (4132) and the receiving groove (4133) may be connected. The first through hole (4132) and the receiving groove (4133) may be described as a single member by the aforementioned features. The receiving groove (4133) may be located below the first through hole (4132). The first through hole (4132) may be received so that the OIS support member (600) passes through it. The receiving groove (4133) may be received by the second coupling part (820) that is coupled to the OIS support member (600).

[0086] The base (410) may include a support member (414) that supports the housing (310). The support member (414) may support the housing (310). The support member (414) may support four corner portions of the housing (310). The support member (414) may protrude upward from the upper surface of the base (410). The support member (414) may be formed at each of the four corner portions to accommodate the housing (310) inside. Through such a structure, the support member (414) may function as a stopper that limits the distance of movement of the housing (310) to the side.

[0087] The base (410) may include a stepped 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 stepped portion (415). The stepped portion (415) may be in direct contact with the lower end of the side plate (120) of the cover member (100). Additionally, an adhesive member (not shown) may be provided between the stepped portion (415) and the side plate (120) of the cover member (100). The stepped portion (415) may be formed to protrude laterally from the side of the base (410). The stepped portion (415) may be formed at the lower end of the base (410). However, it is not limited thereto.

[0088] The substrate (420) may be located on the upper surface of the base (410). The substrate (420) may be located on the lower side of the housing (310). An OIS coil (430) may be located on the substrate (420). An 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 located between the base (410) and the housing (310). The substrate (420) may be located 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). For example, the substrate (420) can supply power to the AF coil (220) through the OIS support member (600) and the upper support member (510). Additionally, the substrate (420) can be energized with the sensing coil (710) through the OIS support member (600) and the upper support member (510).

[0089] The substrate (420) may include an opening (421) and a terminal portion (422). The substrate (420) may include an opening (421) that allows light passing through the lens module to pass through. 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 such a structure, the terminal portion (422) may be exposed to the outside. The terminal portion (422) may be electrically connected to an external configuration by soldering, etc., to supply power to the lens driving device of the present embodiment. The terminal portion (422) may be received in a terminal receiving portion formed by a recess on the side of the base (410).

[0090] The OIS coil (430) can be positioned opposite the driving magnet (320). The OIS coil (430) can move the driving magnet (320) through electromagnetic interaction. The OIS coil (430) can be positioned on the substrate (420). The OIS coil (430) can be positioned between the base (410) and the housing (310). The OIS coil (430) can be positioned opposite 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 move as a single unit through the interaction between the OIS coil (430) and the driving magnet (320).

[0091] The OIS coil (430) can 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 miniaturizing the lens driving device (reducing the height in the z-axis direction, which is the optical axis direction). The OIS coil (430) can be formed to minimize interference with the OIS sensor (720) located on the lower side, for example. The OIS coil (430) can be positioned so as not to overlap with the OIS sensor (720) in the vertical direction.

[0092] The support member (500, 600) can connect two or more of the first movable member (200), the second movable member (300), and the stator (400). The support member (500, 600) can elastically connect two or more of the first movable member (200), the second movable member (300), and the stator (400) to support relative movement between each component. The support member (500, 600) may be formed to have at least a portion of elasticity. In this case, the support member (500, 600) may be referred to as an elastic member or a spring.

[0093] The support member (500, 600) may include an AF support member (500) and an OIS support member (600). The AF support member (500) may be coupled to a first movable member (200) and a second movable member (300) as a support member for AF driving. The OIS support member (600) may be coupled to a second movable member (300) and a stator (400) as a support member for OIS driving.

[0094] 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 a bobbin (210) and a housing (310). The AF support member (500) may support the bobbin (210) so that it can move relative to the housing (310) during AF operation. The AF support member (500) may elastically support the bobbin (210) so that it moves to an initial position when AF operation is completed.

[0095] The upper support member (510) can be coupled to the housing (310) and the bobbin (210). The upper support member (510) can be coupled to the upper part of the bobbin (210) and the upper part of the housing (310). The upper support member (510) can movably support the bobbin (210) relative to the housing (310). The inner part (512) of the upper support member (510) can be coupled to the upper coupling part (213) of the bobbin (210). The outer part (511) of the upper support member (510) can be coupled to the upper coupling part (313) of the housing (310).

[0096] The upper support member (510) may include an outer part (511), an inner part (512), a connecting part (513), and a coupling part (514). The upper support member (510) may include an outer part (511) that is coupled to the housing (310). The upper support member (510) may include an inner part (512) that is coupled to the bobbin (210). The upper support member (510) may include a connecting part (513) that connects the outer part (511) and the inner part (512). The upper support member (510) may include a coupling part (514) that extends from the outer part (511) and is coupled to the OIS support member (600).

[0097] The upper support member (510) may be provided with two separate bodies to supply power to the AF coil (220). The upper support member (510) may include a pair of upper support units (5101, 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, 5102) may be electrically connected to the AF coil (220). The first upper support unit (5101) may be coupled with the first support unit (610). The second upper support unit (5102) can be combined with the second support unit (610).

[0098] 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 part (521), an inner part (522), and a connecting part (523). The lower support member (520) may include an outer part (521) coupled to the housing (310), an inner part (522) coupled to the bobbin (210), and a connecting part (523) elastically connecting the outer part (521) and the inner part (522). The lower support member (520) may be formed integrally as an example. However, it is not limited thereto. As a variation, the lower support member (520) may be provided as a pair to replace the upper support member (510) and used to supply power to the AF coil (220).

[0099] The OIS support member (600) can movably support the movable member (200, 300) with respect to the base (410). The OIS support member (600) can be electrically connected to the AF coil (220). The OIS support member (600) can be combined with the upper support member (510).

[0100] The OIS support member (600) can be coupled to the upper support member (510) and the terminal unit (800). The OIS support member (600) can be electrically connected to the upper support member (510) and the substrate (420). The OIS support member (600) can 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) can be coupled to the terminal unit (800) disposed on the stator (400), and the other side can be coupled to the upper support member (510) and / or the housing (310). Through this structure, the OIS support member (600) can elastically support the second movable member (300) against the stator (400) so that the second movable member (300) can move horizontally or tilt. The upper part of the OIS support member (600) can be joined to the upper support member (510) by soldering. The lower part of the OIS support member (600) can be joined 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 variation. Meanwhile, the OIS support member (600) may be formed integrally with the upper support member (510).

[0101] The OIS support member (600) may include first to fourth support units (510, 620, 630, 640) spaced apart from each other. The first to fourth support units (510, 620, 630, 640) may be spaced apart from each other. The first and second support units (610, 620) may be electrically connected to the AF coil (220) through the upper support member (510). The third and fourth support units (630, 640) may be electrically connected to the sensing coil (710). The first to fourth support units (510, 620, 630, 640) may be located at each of the four corner portions formed between the four sides of the housing (310). The first to fourth support units (510, 620, 630, 640) can be arranged symmetrically with respect to the center of the housing (310).

[0102] The sensor unit may be provided for one or more of autofocus feedback and hand shake correction feedback. The sensor unit may detect the position or movement of one or more of the first movable (200) and the second movable (300).

[0103] The sensor unit may include, for 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) to provide information for AF feedback. The OIS sensor unit may detect the horizontal movement or tilt of the second actuator (300) to provide information for OIS feedback.

[0104] 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) may be omitted if it is not an autofocus feedback type lens driving device configured for autofocus feedback. 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, if a Hall sensor is located on either the housing (310) or the bobbin (210) and a sensing magnet is located on the other, the strength of the magnetic force detected by the Hall sensor changes according to the movement of the bobbin (210), so the position and / or movement of the bobbin (210) can be detected.

[0105] As a variation, in an embodiment where the AF sensor unit is not provided, current only needs to be applied to the AF coil (220), so only two wires, which are configured according to an example of the OIS support member (600) through the AF support member (500), can be connected to the substrate (420) or receive a signal. In the aforementioned variation, the two wires can be connected to the substrate (420) through the terminal unit (800) and connected to the outside through the terminal part (422) formed on the substrate (420). However, in another variation, the two wires can be directly connected to an external component of the lens driving device through the terminal unit (800). At this time, a part of the terminal unit (800) can be directly exposed to the outside of the lens driving device.

[0106] The sensing coil (710) may be located in the housing (310). The sensing coil (710) may be located around the upper part of the housing (310). The sensing coil (710) may be located at the sensing coil coupling part (315) of the housing (310). The sensing coil (710) may be located along the top of the housing (310). The sensing coil (710) may be in the form of a closed curve, for example, but is not limited thereto. The sensing coil (710) may be located spaced apart from the AF coil (220). Through such a structure, when power is applied to the AF coil (220), an induced voltage may be generated in the sensing coil (710). A voltage may be induced in the sensing coil (710) according to the distance between the sensing coil (710) and the AF coil (220). That is, the voltage induced in the sensing coil (710) can be varied 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 can be used for an autofocus feedback function.

[0107] The sensing coil (710) can be energized with 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.

[0108] The high-frequency current application unit can apply a high-frequency current to the AF coil (220). That is, the high-frequency current application unit can 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) can induce a voltage in the sensing coil (710) without affecting the movement of the bobbin (210). That is, by applying a high-frequency current to the AF coil (220), the high-frequency current application unit can generate an induced voltage in the sensing coil (710) without affecting the autofocus drive of the bobbin (210). The high-frequency current application unit can supply a high-frequency current to the AF coil (220) according to a predetermined time interval.

[0109] The voltage sensing unit can detect the voltage induced in the sensing coil (710). That is, the voltage sensing unit detects the voltage induced in the sensing coil (710), and the detected value is transmitted to the control unit, so that the control unit can determine the position of the bobbin (210).

[0110] The OIS sensor section may include an OIS sensor (720). The OIS sensor (720) may detect the movement of the second actuator (300). The OIS sensor (720) may include a Hall sensor. The OIS sensor (720) may detect the driving magnet (320). The OIS sensor (720) may be received in the sensor receiving section (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 positioned to detect both x-axis and y-axis movements of the housing (310).

[0111] The terminal unit (800) can be coupled with the substrate (420). The terminal unit (800) can be coupled with the OIS support member (600). At least a portion of the terminal unit (800) can be formed of a conductive member. The OIS support member (600) coupled to the terminal unit (800) and the substrate (420) can be electrically conductive.

[0112] The terminal unit (800) may include a first coupling portion (810) coupled to a substrate (420). The terminal unit (800) may include a second coupling portion (820) coupled to an OIS support member (600). The terminal unit (800) may include a connecting portion (830) connecting the first coupling portion (810) and the second coupling portion (820). The terminal unit (800) may include a bending portion (840) that extends downward from the first coupling portion (810) and contacts the inner surface of the base (410) forming a first through hole (4132). Additionally, the terminal unit (800) may include a third coupling portion (850) that extends outward from the bending portion (840) and is exposed to the side of the base (410) at least partially.

[0113] 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 in part. The first coupling portion (810) may include a through hole into which a solder ball is received. The first coupling portion (810) may have a rectangular shape. However, it is not limited thereto.

[0114] The second coupling part (820) may be located lower than the first coupling part (810). The second coupling part (820) may be located lower than the first coupling part (810) which is coupled to the lower surface of the substrate (420). That is, the second coupling part (820) may be located lower than the substrate (420). In this embodiment, the operating section of the OIS support member (600) may be additionally secured by the height difference between the second coupling part (820) and the substrate (420). That is, compared to the case where the OIS support member (600) is coupled to the substrate (420), the operating length of the OIS support member (600) may be increased when the OIS support member (600) is coupled to the second coupling part (820) of the terminal unit (800).

[0115] 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) extending obliquely from the extension portion (821). The second coupling portion (820) may include a coupling hole (823) formed in the inclined portion (822) and coupled with the OIS support member (600).

[0116] The extension portion (821) may extend laterally from the bottom of the connecting portion (830). The extension portion (821) may connect the connecting 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 obliquely from the extension portion (821). The inclined portion (822) may extend horizontally and / or vertically obliquely from the extension portion (821). The inclined portion (822) may extend from the extension portion (821) with the same width. A coupling hole (823) may be formed in the inclined portion (822). The coupling hole (823) may be coupled with the OIS support member (600). A solder ball coupled with the OIS support member (600) may be coupled to the coupling hole (823). A soldering portion or solder ball that joins the OIS support member (600) and the second joining portion (820) may be located at the upper and / or lower part of the joining hole (823). That is, soldering may be performed at the upper and / or lower side of the joining hole (823). At this time, a portion of the soldering portion may move from the upper side to the lower side or from the lower side to the upper side through the joining hole (823).

[0117] The connecting portion (830) can connect the first connecting portion (810) and the second connecting portion (820). The connecting portion (830) can extend downward from one end of the first connecting portion (810). The connecting portion (830) can extend upward from one end of the second connecting portion (820). The connecting portion (830) can connect the second connecting portion (820) and the first connecting portion (810) such that the second connecting portion (820) is located lower than the first connecting portion (810). At least a portion of the connecting portion (830) can be formed in a rounded shape. The connecting portion (830) can be formed by bending. However, it is not limited thereto.

[0118] The bend portion (840) may extend downward from the first coupling portion (810). The bend portion (840) may come into contact with the inner surface of the base (410) forming the first through hole (4132). The bend portion (840) may come into surface contact with the inner surface of the base (410). The bend portion (840) may be formed in a shape corresponding to the second through hole (4131) of the base (410). Through such a structure, the bend portion (840) can guide the terminal unit (800) to be coupled to the correct position of the base (410).

[0119] In this embodiment, as shown in FIG. 5, one connecting part (830) and three bending parts (840) may be extended from the first connecting part (810). That is, the connecting part (830) may be formed on one of the four sides of the first connecting part (810), and the bending parts (840) may be formed on the remaining three sides. However, this is not limited thereto, and the number and / or location of the connecting part (830) and the bending parts (840) may be changed.

[0120] The third connecting portion (850) may extend outward from the bent portion (840). At least a portion of the third connecting portion (850) may be exposed to the side of the base (410). The third connecting portion (850) may be electrically connected to an external component.

[0122] The operation of the camera module according to the present embodiment is described below.

[0123] First, the autofocus function of the camera module according to the present embodiment will be explained. When power is supplied to the AF coil (220), the AF coil (220) moves relative to the driving magnet (320) due to the 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 together with the AF coil (220). That is, the bobbin (210) to which the lens module is coupled on the inside moves up and down relative to the housing (310). This movement of the bobbin (210) results in the lens module moving closer to or further away from the image sensor, thereby performing focus adjustment on the subject.

[0124] Meanwhile, to achieve a more precise realization of the autofocus function of the camera module according to the present embodiment, autofocus feedback may be applied. A voltage is induced in the sensing coil (710) mounted on the housing (310) by the 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) performs relative movement with respect to the housing (310), the value of the voltage induced in the sensing coil (710) may change. At this time, the supply of the 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 the present embodiment can be performed more precisely through autofocus feedback.

[0125] The image stabilization function of the camera module according to the present embodiment is described. When power is supplied to the OIS coil (430), the driving magnet (320) moves relative to the OIS coil (430) due to the 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 attached moves integrally with the driving magnet (320). That is, the housing (310) moves in a horizontal direction relative to the base (410). Meanwhile, the housing (310) may be induced to tilt relative to the base (410) at this time. 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 (a direction perpendicular to the optical axis of the lens module) relative to the image sensor, thereby performing the image stabilization function.

[0126] Meanwhile, to more precisely realize the image stabilization function of the camera module according to the present embodiment, image stabilization feedback may be applied. An OIS sensor (720) mounted on the base (410) detects the magnetic field of a driving magnet (320) fixed to the housing (310). Meanwhile, when the housing (310) moves relative to the base (410), the amount of the magnetic field detected by the OIS sensor (720) changes. Meanwhile, a pair of OIS sensors (720) detect the amount of movement or position of the housing (310) in the horizontal direction (x-axis and y-axis direction) in the aforementioned manner and transmit the detected value to the control unit. The control unit determines whether to perform additional movement of the housing (310) based on the received detected value. Since this process occurs in real time, the image stabilization function of the camera module according to the present embodiment can be performed more precisely through image stabilization feedback.

[0128] Hereinafter, the effects of the lens driving device according to the present embodiment will be explained with reference to FIGS. 10 and FIGS. 11.

[0129] FIG. 10 is a conceptual diagram illustrating the effect of a lens driving device according to the present embodiment, and FIG. 11 is a conceptual diagram illustrating a comparative example for comparison with the present embodiment.

[0130] Referring to FIG. 10, in a lens driving device according to the present embodiment, the OIS support member (600) is coupled to the upper support member (510) and the second coupling part (820) of the terminal unit (800). More specifically, 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 part (820) of the terminal unit (800). At this time, the second coupling part (820) is positioned lower than the substrate (420). Meanwhile, in the structure of the aforementioned embodiment, the operating range of the OIS support member (600) is defined as the distance between the upper support member (510) and the second coupling part (820) of the terminal unit (800). In this embodiment, when the upper part of the OIS support member (600) (the combined part of the OIS support member (600) and the upper support member (510)) moves by a distance (d), a deflection of a first angle (θ1) occurs in the OIS support member (600).

[0131] Referring to FIG. 11, in a lens driving device according to a comparative example, the OIS support member (600) is coupled to an upper support member (510) and a substrate (420). More specifically, 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) of the comparative example (height from the bottom surface of the base (410)) corresponds to the height of the substrate (420) of the present embodiment. That is, the height of the substrate (420) of the comparative example is higher than the height of the second coupling part (820) of the terminal unit (800) of the present embodiment. Meanwhile, in the structure of the aforementioned comparative example, the operating range 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 part of the OIS support member (600) moves by a range of distance (d), bending of the second angle (θ2) occurs in the OIS support member (600).

[0132] 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 when driving the same flow distance (d) than the OIS support member (600) according to the present embodiment. In other words, the OIS support member (600) according to the present embodiment receives less stress when driving the same flow distance (d) than the OIS support member (600) according to the comparative example.

[0133] 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 movable length 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 movable length of the OIS support member (600) also becomes shorter. At this time, the stress increases in the OIS support member (600) due to the increased bending that occurs for the same repeated movement distance (d). When the stress acting on the OIS support member (600) increases in this way, more power is required to drive it, and the time required to drive it also increases, which becomes a problem. In addition, if the stress acting on the OIS support member (600) remains in an increased state for a long time, the OIS support member (600) may be damaged, which is a problem.

[0134] The present embodiment proposes an assembly structure that minimizes the shortening of the length of the OIS support member (600) even as the structure of the smartphone becomes thinner. In the present 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 since the soldering position of the terminal unit (800) and the OIS support member (600) is formed below the substrate (420), the length of the movable part of the OIS support member (600) can be increased compared to a structure in which the OIS support member (600) is soldered to the substrate (420).

[0136] In the foregoing, although all components constituting an embodiment of the present invention have been described as being combined or operating in combination, the present invention is not necessarily limited to such embodiments. That is, within the scope of the purpose of the present invention, all components may be selectively combined in one or more ways to operate. Furthermore, terms such as "include," "constitute," or "have" described above, unless specifically stated otherwise, mean that the relevant component may be inherent; thus, they should be interpreted as allowing for the inclusion of additional components rather than excluding other components. All terms, including technical or scientific terms, have the same meaning as generally understood by those skilled in the art to which the present invention pertains, unless otherwise defined. Terms commonly used, such as those defined in advance, should be interpreted in accordance with their meaning in the context of the relevant technology and, unless explicitly defined in the present invention, should not be interpreted in an ideal or overly formal sense.

[0137] The foregoing description is merely an illustrative explanation of the technical concept of the present invention, and those skilled in the art to which the present invention pertains will be able to make various modifications and variations within the scope of the essential characteristics of the present invention. Accordingly, the embodiments disclosed in the present invention are intended to explain, not limit, the technical concept of the present invention, and the scope of the technical concept of the present invention is not limited by such embodiments. The scope of protection of the present invention shall be interpreted by the claims below, and all technical concepts within an equivalent scope shall be interpreted as being included within the scope of rights of the present invention. Explanation of the symbols

[0138] 100: Cover member 200: First movable 300: Second mover 400: Stator 500: AF support member 600: OIS support member 800: Terminal Unit

Claims

Claim 1 A lens driving device comprising: a base; a housing disposed on the base; a bobbin disposed within the housing; a magnet disposed in the housing; a first coil disposed in the bobbin; a second coil disposed on the base; a first support member coupled to the upper surface of the housing and the bobbin; a terminal unit disposed on the base; and a second support member coupled to the first support member and the terminal unit, wherein the terminal unit comprises a second coupling portion coupled to the second support member and a connecting portion extending from the second coupling portion, the connecting portion includes a portion extending in the direction of the optical axis, and the second coupling portion of the terminal unit is disposed lower than the upper surface of the base. Claim 2 A lens driving device according to claim 1, wherein the second support member passes through a first through hole formed in the base, and the second coupling part of the terminal unit includes a coupling hole formed at a position corresponding to the first through hole of the base. Claim 3 A lens driving device according to paragraph 2, comprising a soldering portion that combines the second supporting member and the second coupling portion of the terminal unit, wherein the soldering portion is positioned below the coupling hole of the second coupling portion of the terminal unit. Claim 4 In paragraph 2, the second support member is a lens driving device connected to the terminal unit by passing through the coupling hole of the second coupling part. Claim 5 In paragraph 2, the second coupling part includes an extension part extending laterally from the connecting part and an inclined part extending horizontally at an angle from the extension part, and the coupling hole is formed in the inclined part, forming a lens driving device. Claim 6 A lens driving device according to claim 1, comprising a substrate disposed on the upper surface of the base and including the second coil. Claim 7 In claim 6, the terminal unit includes a first coupling portion coupled to the substrate, and the connecting portion of the terminal unit is a lens driving device connecting the first coupling portion and the second coupling portion. Claim 8 In claim 7, the terminal unit is a lens driving device comprising a bent portion that extends downward from the first coupling portion and contacts one surface of the base. Claim 9 In claim 1, the terminal unit is a lens driving device comprising a third coupling portion that is exposed to the side of the base, at least a portion thereof. Claim 10 In claim 1, the base is a lens driving device comprising a receiving groove that accommodates the terminal unit. Claim 11 A lens driving device according to claim 1, wherein the second support member comprises 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 first support member, and the first to fourth support units are disposed at each of the four corner portions of the housing. Claim 12 A lens driving device according to claim 11, comprising a third coil disposed in the housing and spaced apart from the first coil, wherein the third and fourth support units are electrically connected to the third coil. Claim 13 A lens driving device comprising: a base; a housing disposed on the base; a bobbin disposed within the housing; a magnet disposed in the housing; a first coil disposed in the bobbin; a second coil disposed on the base; a first support member coupled to the upper surface of the housing and the bobbin; a terminal unit disposed on the base; and a second support member coupled to the first support member and the terminal unit, wherein the terminal unit comprises a second coupling portion coupled to the second support member and a connecting portion extending from the second coupling portion, wherein the connecting portion includes a portion extending in the direction of the optical axis, wherein the second support member passes through a first through hole formed in the base, and the second coupling portion of the terminal unit comprises a coupling hole formed at a position corresponding to the first through hole of the base. Claim 14 A lens driving device according to claim 13, comprising a soldering portion that combines the second supporting member and the second coupling portion of the terminal unit, wherein the soldering portion is positioned below the coupling hole of the second coupling portion of the terminal unit. Claim 15 In paragraph 13, the second support member is a lens driving device connected to the terminal unit by passing through the coupling hole of the second coupling part. Claim 16 In claim 13, the second coupling part includes an extension part extending laterally from the connecting part and an inclined part extending horizontally at an angle from the extension part, and the coupling hole is formed in the inclined part, forming a lens driving device. Claim 17 A camera module comprising: a printed circuit board; an image sensor disposed on the printed circuit board; a lens driving device according to any one of claims 1 to 16 disposed on the printed circuit board; and a lens coupled to the lens driving device. Claim 18 An optical device comprising: a main body; a display unit disposed on the main body; and a camera module of claim 17 disposed on the main body.

Images