KR20220035671A - Lens moving apparatus, camera module and optical instrument including the same - Google Patents

Abstract

The embodiment includes a base, a circuit board disposed on the base, a housing disposed on the circuit board, a bobbin disposed in the housing, a support member coupled to the upper portion of the bobbin and the upper portion of the housing, and a first coil that moves the bobbin in the optical axis direction. It includes a magnet, a second coil opposing the magnet in the optical axis direction, and a support member coupled to the upper elastic member, wherein the second coil is a bundle of coils that has a hollow structure and is coupled to the circuit board at both ends by solder, and supports The member includes a first wire and a second wire disposed at one corner of the housing.

Description

Lens driving device, and camera module and optical device including the same {LENS MOVING APPARATUS, CAMERA MODULE AND OPTICAL INSTRUMENT INCLUDING THE SAME}

The embodiment relates to a lens driving device, a camera module including the same, and an optical device.

Since it is difficult to apply the voice coil motor (VCM) technology used in existing general camera modules to camera modules for ultra-small size and low power consumption, related research has been actively conducted.

Demand and production of electronic products such as smartphones and cell phones equipped with cameras are increasing. Cameras for mobile phones are trending toward higher resolution and miniaturization, and actuators are also becoming smaller, larger in diameter, and multi-functional accordingly. In order to implement a high-resolution mobile phone camera, additional functions such as improved mobile phone camera performance and auto focusing, improved shutter shake, and zoom function are required.

The embodiment provides a lens driving device that can improve electromagnetic force, reduce magnetic field interference, prevent damage to the OIS coil, and reduce power consumption, and a camera module and optical device including the same. .

A lens driving device according to an embodiment includes a base; a circuit board disposed on the base; a housing disposed on the circuit board; a bobbin disposed within the housing; a support member coupled to the upper part of the bobbin and the upper part of the housing; a first coil and a magnet that move the bobbin in the optical axis direction; a second coil facing the magnet in the optical axis direction; and a support member coupled to the upper elastic member, wherein the second coil is a coil bundle having a hollow structure and both ends of which are coupled to the circuit board by solder, and the support member is disposed at one corner of the housing. It includes a first wire and a second wire.

The second coil may be disposed between the circuit board and the base.

The hollow portion of the second coil may be coupled to at least a portion of the base.

The base may include a groove recessed from the upper surface, and the second coil may be disposed within the groove.

The upper surface of the base includes a first surface in contact with the lower surface of the circuit board; and a second surface that has a step difference from the first surface and is located lower than the first surface, and the second coil may be disposed on the second surface.

The upper surface of the second coil may be located lower than or at the same height as the first surface.

A protrusion may be formed on the second surface that is coupled to the middle curve of the second coil.

The upper surface of the protrusion may be lower in height or the same as the first surface.

The circuit board may include a pad electrically connected to the second coil.

The pad may be disposed on the lower surface of the circuit board. Alternatively, the pad may be disposed on the top surface of the circuit board.

The second coil may have a number of turns of 40 to 80 turns and may be in the form of a strand covered with a conductive wire.

The magnet may include a plurality of magnets disposed in the housing, and the second coil may include a plurality of coil units corresponding to the plurality of magnets.

The base may include seating parts for disposing the plurality of coil units. The magnet may be placed in the housing, and the first coil may be placed in the bobbin. The first wire and the second wire may be electrically connected to the circuit board.

The lens driving device includes a sensing magnet disposed on the bobbin; And it may include a first position sensor facing the sensing magnet. The first position sensor may be disposed on the base. The first wire and the second wire may be coupled to the circuit board.

The lens driving device may be disposed on the base and include a terminal portion electrically connected to the circuit board, and the first and second wires may be coupled to the terminal portion and electrically connected to the terminal portion.

The lens driving device includes a first sensor disposed on the base and facing one of the plurality of magnets in the optical axis direction; and a second sensor disposed on the base and facing another one of the plurality of magnets in the optical axis direction.

A driving signal is supplied to the second coil through the circuit board, and the housing can move in a direction perpendicular to the optical axis direction due to interaction between the second coil and the magnet.

A lens driving device according to another embodiment includes a base; a circuit board disposed on the base; a housing disposed on the circuit board; a bobbin disposed within the housing; a first coil and a magnet that move the bobbin in the optical axis direction; an upper elastic member coupled to the upper part of the bobbin and the upper part of the housing; a support member whose one end is coupled to the upper elastic member and whose other end is electrically connected to the circuit board; and a second coil that faces the magnet in the optical axis direction and is disposed under a lower surface of the circuit board, and the base may include a receiving portion for accommodating the second coil.

In the embodiment, by placing the OIS coil between the circuit board and the base, damage to the OIS coil and generation of foreign matter due to collision with the housing or magnet can be prevented.

The embodiment can improve electromagnetic force by providing an OIS coil in the form of a winding coil.

The embodiment can prevent disconnection of the support member due to an increase in the size of the lens module by arranging two support members at one corner of the housing.

The embodiment can reduce magnetic field interference between magnets included in adjacent lens driving devices when applying a dual camera module by applying three driving magnets.

In the embodiment, power consumption can be reduced by coupling the lower end of the support member to the terminal disposed on the base.

1 is an exploded perspective view of a lens driving device according to an embodiment.
Figure 2 is a perspective view of the lens driving device excluding the cover member.
Figure 3a is a diagram showing the separation of the bobbin, the first coil, and the sensing magnet.
Figure 3b is a perspective view of a bobbin, a first coil, and a sensing magnet combined.
Figure 4a is a perspective view of the housing.
Figure 4b is an exploded perspective view of the housing and magnet.
Figure 4c is a perspective view of the housing and magnet combined.
Figure 5a is a perspective view of the upper elastic member.
Figure 5b is a perspective view of the lower elastic member.
Figure 6 is a diagram for explaining the electrical connection relationship between the upper elastic member, the coil, and the support member.
Figure 7 is an exploded perspective view of the circuit board, the second coil, the first and second position sensors, the terminal portion, and the base.
Figure 8 is a perspective view of a circuit board.
Figure 9 is a perspective view of the base.
Figure 10 is a perspective view of the terminal portion.
FIG. 11A is a partially enlarged view of the lens driving device of FIG. 2.
FIG. 11B shows solder joining the first terminal shown in FIG. 11A to the first pad of the circuit board.
Figure 12a is a perspective view of the first terminal and the first support member combined.
Figure 12b is a perspective view of the first terminal, the first support member, and the solder combined.
Figure 13 is a perspective view of the combination of the second coil, the first position sensor, the second position sensor, the terminal portion, and the base.
Figure 14a is a perspective view of the base, terminal portion, second coil, and circuit board combined.
Figure 14B is a bottom view of the circuit board, second coil, first position sensor, and second position sensor.
Figure 15a shows a bottom view of a circuit board according to another embodiment.
Figure 15b is a perspective view of a circuit board according to another embodiment.
FIG. 16A is a cross-sectional view of the lens driving device in the AB direction of FIG. 2.
FIG. 16B is a cross-sectional view of the lens driving device in the CD direction of FIG. 2.
FIG. 16C is a cross-sectional view of the lens driving device in the EF direction of FIG. 2.
FIG. 16D is a cross-sectional view of the lens driving device in the GH direction of FIG. 2.
Figure 17 is a perspective view of first to fourth magnets and first to fourth coil units.
Figure 18 is a plan view of the first to fourth magnets and first to fourth coil units of Figure 17.
FIG. 19 is a diagram illustrating the relationship between the stroke range in a direction perpendicular to the optical axis of the OIS moving unit, the size of the sensing magnet, and the arrangement of the first position sensor according to an embodiment.
Figure 20 shows a terminal unit according to another embodiment.
Figure 21a shows the arrangement of a magnet placed in a housing, a coil unit placed in a base, and a circuit board.
Figure 21b shows a protrusion of a base according to another embodiment.
Figure 21C shows a protrusion of a base according to another embodiment.
Figure 22 shows the connection between the first support member and the first terminal by solder and the step between the circuit board and the body of the first terminal.
23A shows a first support member according to another embodiment.
Figure 23b is a perspective view of the 1-2 support member according to another embodiment.
Figure 23c is a perspective view of the 1-2 support member according to another embodiment.
Figure 24 is a perspective view of a first support member according to another embodiment.
Figure 25 is a perspective view of a first support member according to another embodiment.
Figure 26 is a perspective view of a first support member according to another embodiment.
Figure 27 is a perspective view of a first support member according to another embodiment.
Figure 28a shows the displacement and tilt characteristics of the AF moving part of the first case and the second case.
Figure 28b shows the displacement and tilt characteristics of the OIS moving part of the first case and the second case.
Figure 29 shows the frequency response characteristics for OIS driving in the first and second cases.
30 shows a portion of a base according to another embodiment.
FIG. 31 shows a first terminal disposed on the base of FIG. 30 according to another embodiment.
Figure 32 shows an exploded perspective view of a camera module according to an embodiment.
Figure 33 shows a perspective view of a portable terminal according to an embodiment.
FIG. 34 shows a configuration diagram of the portable terminal shown in FIG. 33.

Hereinafter, embodiments of the present invention will be described in detail with reference to the attached drawings.

However, the technical idea of the present invention is not limited to some of the described embodiments, but may be implemented in various different forms, and as long as it is within the scope of the technical idea of the present invention, one or more of the components may be optionally used between the embodiments. It can be used by combining and replacing.

In addition, terms (including technical and scientific terms) used in the embodiments of the present invention have meanings that can be generally understood by those skilled in the art to which the present invention pertains, unless specifically defined and described. It can be interpreted as, and the meaning of commonly used terms, such as terms defined in a dictionary, can be interpreted by considering the contextual meaning of the related technology.

Additionally, the terms used in the embodiments of the present invention are for describing the embodiments and are not intended to limit the present invention. In this specification, the singular may also include the plural unless specifically stated in the phrase, and when described as “at least one (or more than one) of A, B, and C,” it can be combined with A, B, and C. It may contain one or more of all possible combinations.

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 are not limited to the essence, order, or order of the component.

And, when a component is described as being 'connected', 'coupled' or 'connected' to another component, the component is not only directly connected, coupled or connected to that other component, but also is connected to that component. It may also include cases where other components are 'connected', 'coupled', or 'connected' by another component between them. In addition, when described as being formed or disposed "on top or bottom" of each component, top or bottom means not only when two components are in direct contact with each other, but also when two components are in direct contact with each other. This also includes cases where another component described above is formed or placed between two components. In addition, when expressed as "top (above) or bottom (bottom)", it can include not only the upward direction but also the downward direction based on one component.

Hereinafter, the lens driving device may be referred to as a lens driving unit, VCM (Voice Coil Motor), actuator, or lens moving device, and the term "coil" hereinafter refers to a coil unit. The term “elastic member” may be expressed as an elastic unit, or as a spring.

Additionally, in the following description, “terminal” may be replaced with a pad, an electrode, a conductive layer, or a bonding portion.

For convenience of explanation, the camera module according to the embodiment is described using a Cartesian coordinate system (x, y, z), but it can also be described using another coordinate system, and the embodiment is not limited to this. In each drawing, the x-axis and y-axis refer to directions perpendicular to the z-axis, which is the optical axis direction. The z-axis direction, which is the optical axis (OA) direction, is called the 'first direction', and the x-axis direction is called the 'second direction.' and the y-axis direction may be referred to as the 'third direction'.

The lens driving device according to the embodiment may perform an 'auto focusing function'. Here, the auto focusing function refers to automatically focusing the image of the subject onto the image sensor surface.

Additionally, the lens driving device according to the embodiment may perform an 'image shake correction function'. Here, the hand shake correction function refers to a feature that prevents the outline of the captured image from being clearly formed due to vibration caused by the user's hand shake when shooting a still image.

FIG. 1 is an exploded perspective view of the lens driving device 100 according to an embodiment, FIG. 2 is a perspective view of the lens driving device 100 excluding the cover member 300, and FIG. 3A shows the bobbin 110 and the sensing magnet 180. ), Figure 3b is a perspective view of the bobbin 110, the first coil 120, and the sensing magnet 180 combined, Figure 4a is a perspective view of the housing 140, and Figure 4b is a perspective view of the housing 140. ), and an separated perspective view of the magnet 130, Figure 4c is a combined perspective view of the housing 140 and the magnet 130, Figure 5a is a perspective view of the upper elastic member 150, and Figure 5b is a lower elastic member 160 ) is a perspective view, and Figure 6 is a diagram for explaining the electrical connection relationship between the upper elastic member 150, the coil 120, and the support member 220, and Figure 7 is a diagram showing the circuit board 250 and the second coil ( 230), an separated perspective view of the first position sensor 170 and the second position sensor 240, the terminal portion 27, and the base 210, Figure 8 is a perspective view of the circuit board 250, and Figure 9 is a base It is a perspective view of 210, FIG. 10 is a perspective view of the terminal portion 27, FIG. 11A is a partial enlarged view of the lens driving device 100 of FIG. 2, and FIG. 11B is the first terminal 27A1 shown in FIG. 11A. and the solder connecting the first pad 27A1 of the circuit board 250, Figure 12a is a perspective view of the first terminal 27A1 and the first support member 220-1, and Figure 12b is a first terminal 27A1. (27A1), the first support member 220-1, and the solder 902 are combined in a perspective view, and FIG. 13 shows the second coil 230, the first position sensor 170, the second position sensor 240, 14A is a combined perspective view of the terminal unit 27 and the base 210, and FIG. 14A is a combined perspective view of the base 210, the terminal unit 27, the second coil 230, and the circuit board 250, and FIG. 14B is a circuit diagram. It is a bottom view of the substrate 250, the second coil 230, the first position sensor 170, and the second position sensor 240, and Figure 15A is a bottom view of the circuit board 250-1 according to another embodiment. 15B is a perspective view of a circuit board 250-2 according to another embodiment, FIG. 16A is a cross-sectional view of the lens driving device 100 in the AB direction of FIG. 2, and FIG. 16B is a perspective view of the circuit board 250-2 according to another embodiment. FIG. 16C is a cross-sectional view of the lens driving device 100 in the CD direction, FIG. 16C is a cross-sectional view of the lens driving device 100 in the EF direction of FIG. 2, and FIG. 16D is a cross-sectional view of the lens driving device 100 in the GH direction of FIG. 2. is a cross-sectional view, Figure 17 is a perspective view of the first to fourth magnets 130-1 to 130-4 and the first to fourth coil units 230-1 to 230-4, and Figure 18 is a This is a top view of 17 first to fourth magnets 130-1 to 130-4 and first to fourth coil units 230-1 to 230-4.

1 to 18, the lens driving device 100 includes a bobbin 110, a first coil 120, a magnet 130, a housing 140, a circuit board 250, and a second coil 230. , and base 210.

The lens driving device 100 may further include an elastic member, and the elastic member may include at least one of an upper elastic member 150 and a lower elastic member 160. Additionally, the lens driving device 100 may further include a support member 220.

The lens driving device 100 may further include a terminal portion 27.

The lens driving device 100 may further include a first position sensor 170 and a sensing magnet 180 for AF feedback driving.

The lens driving device may further include a balancing magnet (185) to cancel out the magnetic field influence of the sensing magnet (180) and balance the weight of the sensing magnet (180). In other embodiments, the balancing magnet 185 may be omitted.

The lens driving device 100 may further include a second position sensor 240 for OIS (Optical Image Stabilizer) feedback driving.

Additionally, the lens driving device 100 may further include a cover member 300.

Referring to FIGS. 3A and 3B, the bobbin 110 is disposed inside the housing 140, and is moved in the direction of the optical axis (OA) or in the first direction by electromagnetic interaction between the first coil 120 and the magnet 130. It may be moved in a direction (eg, Z-axis direction).

The bobbin 110 may have an opening 25A for mounting the lens module 400. For example, the lens module 400 may include at least one of at least one lens and a lens barrel.

For example, the opening 25A of the bobbin 110 may be in the form of a through hole penetrating the bobbin 110, and the shape of the opening 25A of the bobbin 110 may be circular, oval, or polygonal, but is limited thereto. It doesn't work.

The bobbin 110 may include first and second sides that are spaced apart from each other. Each of the second sides may connect two adjacent first sides to each other.

For example, the first sides of the bobbin 110 may be expressed as “sides,” and the second sides of the bobbin 110 may be alternatively expressed as “corners” or “corners.”

The first sides of the bobbin 110 may correspond to or oppose the first sides 141-1 to 141-4 of the housing 140, and the second sides of the bobbin 110 may correspond to the first sides 141-1 to 141-4 of the housing 140. It may correspond to or oppose the two sides (142-1 to 142-4).

The bobbin 110 may include a seating portion 105 for seating, placing, or mounting the first coil 120.

For example, the seating portion 105 may be formed on the outer surface of the bobbin 110. For example, the seating portion 105 may be formed on the sides of the bobbin 110. The seating portion 105 may be in the form of a groove recessed from the outer surface of the bobbin 110.

For example, the seating portion 105 may be formed to correspond to the shape and number of the first coils 120 disposed on the outer surface of the bobbin 110. For example, the seating portion 105 may have a ring shape, but is not limited thereto. In another embodiment, the bobbin 110 may not be provided with the seating portion 105, and the first coil 120 may be wound and fixed directly on the outer surface of the bobbin 110. For example, in another embodiment, the bobbin 110 may include a protrusion for winding the first coil 120.

The bobbin 110 may include a groove 18A or a hole for mounting or arranging the sensing magnet 180. Additionally, the bobbin 110 may include a groove 18B or a hole for mounting or arranging the balancing magnet 185.

For example, grooves 18A and 18B may be formed on opposite sides of the bobbin 110.

For example, the groove 18A may be formed in one of the second sides (corners) of the bobbin 110, and may be recessed from the lower surface of one of the second sides of the bobbin 110. It is not limited.

Also, for example, the groove 18B may be formed in one of the second sides (corners) of the bobbin 110, and may be recessed from the lower surface of the other second side of the bobbin 110. It may be possible, but it is not limited. In another embodiment, grooves may be formed on first sides of the bobbin 110 located on opposite sides.

The bobbin 110 may have protrusions 111 provided on second sides (or corners). The protrusion 111 may pass through the optical axis OA and protrude in a direction parallel to a straight line perpendicular to the optical axis direction, but is not limited thereto.

The protrusion 111 of the bobbin 110 corresponds to the groove 145 of the housing 140, and may be inserted or placed within the groove 145 of the housing 140, and the bobbin 110 may be fixed at a constant position around the optical axis. It can suppress or prevent movement or rotation beyond the range.

An escape groove 112a may be provided on the upper surface of the bobbin 110 to avoid spatial interference with the first frame connection portion 153 of the upper elastic member 150. A second escape groove 112b may be provided on the lower surface of the bobbin 110 to avoid spatial interference with the second frame connection portion 163 of the lower elastic member 160.

For example, the first and second escape grooves 112a and 112b may be disposed at the corners of the bobbin 110, but are not limited thereto, and may be formed on at least one of the sides and corners of the bobbin 110. It can be.

The bobbin 110 may include a first stopper 115 protruding from the upper surface. Although not shown in FIG. 3B, the bobbin 110 may include a second stopper protruding from the lower surface.

When the bobbin 110 moves in the first direction for the auto-focusing function, the first stopper 115 and the second stopper of the bobbin 110 are operated even if the bobbin 110 moves beyond a specified range due to an external impact, etc. It is possible to prevent the upper surface of the bobbin 110 from directly colliding with the inside of the upper plate 301 of the cover member 300, and to prevent the lower surface of the bobbin 110 from directly colliding with the circuit board 250. .

A guide protrusion 114 may be formed on the upper surface of the bobbin 110 to guide the installation position of the first frame connection portion 153 of the upper elastic member 150. The guide protrusion 114 may protrude from the upper surface of the bobbin 110. For example, a damper may be disposed between the guide protrusion 114 and the first frame connection portion 153.

A first coupling portion 113 may be provided on the upper surface of the bobbin 110 to be coupled to and fixed to the upper elastic member 150, and a first coupling portion 113 may be provided on the lower surface of the bobbin 110 to be coupled to and fixed to the lower elastic member 160. A second coupling portion 117 may be provided for.

For example, in FIGS. 3A and 3B, the first and second coupling portions 113 and 117 of the bobbin 110 may have a protrusion shape, but this is not limited to this, and in another embodiment, the first and second coupling portions 113 and 117 of the bobbin 110 may have a protrusion shape. The second engaging portions may have a groove or planar shape.

Next, the first coil 120 will be described.

The first coil 120 may be disposed on the bobbin 110 or may be combined with the bobbin 110.

For example, the first coil 120 may be disposed on the outer surface of the bobbin 110. In the first coil 120, “coil” may be replaced with “coil unit,” “coil block,” or “coil ring.”

For example, the first coil 120 may be disposed outside the sensing magnet 180 and the balancing magnet 185.

For example, at least a portion of the first coil 120 may overlap the sensing magnet 180 and/or the balancing magnet 185 in a direction perpendicular to the optical axis OA, but is not limited thereto. In another embodiment, the first coil may not overlap the sensing magnet and/or balancing magnet in a direction perpendicular to the optical axis.

For example, the first coil 120 may be placed or seated within the seating portion 105 of the bobbin 110.

The first coil 120 disposed on the bobbin 110 may be spaced apart from the sensing magnet 180 and/or the balancing magnet 185. For example, at least a portion of the bobbin 110 may be disposed between the first coil 120 and the sensing magnet 180 (or the balancing magnet 185).

In another embodiment, at least a portion of the first coil 120 may be in contact with the sensing magnet 180 and/or the balancing magnet 185.

For example, the first coil 120 may be arranged to surround the outer surface of the bobbin 110 in a direction of rotation around the optical axis OA. For example, the first coil 120 may have a closed curve, for example, a ring shape, wound around the outer surface of the bobbin 110.

For example, the first coil 120 may be wound directly on the outer surface of the bobbin 110, but is not limited to this.

According to another embodiment, the first coil may include at least one coil ring or coil block. For example, the first coil may include two or more coil rings or coil blocks, and the two or more coil rings or coil blocks may be connected to each other in series. In other embodiments, two or more coil rings or coil blocks may be driven individually or independently without being connected to each other. At this time, the coil rings may be arranged on the bobbin so that they rotate or are wound around an axis perpendicular to the optical axis.

Power or a driving signal may be provided to the first coil 120. The power or driving signal provided to the first coil 120 may be a direct current signal or an alternating current signal, or may include a direct current signal and an alternating current signal, and may be in the form of voltage or current.

When a driving signal (e.g., driving current) is supplied, the first coil 120 can form electromagnetic force through electromagnetic interaction with the first magnet 130, and the bobbin ( 110) can be moved.

In the initial position of the AF moving unit (or “AF moving unit”), the bobbin 110 can be moved in an upward or downward direction (eg, Z-axis direction), which is referred to as bidirectional driving of the AF moving unit. Alternatively, in the initial position of the AF moving unit, the bobbin 110 may be moved in an upward direction, which is referred to as unidirectional driving of the AF moving unit.

At the initial position of the AF moving unit, the first coil 120 may correspond to, oppose, or overlap the magnet 130 in the horizontal direction. For example, the horizontal direction may be a direction perpendicular to the optical axis OA, or a direction perpendicular to the optical axis OA and parallel to a straight line passing through the optical axis OA.

For example, the AF moving unit may include the bobbin 110 and components coupled to the bobbin 110. For example, the AF moving unit may include a bobbin 110, a first coil 120, and a sensing magnet 180. For example, the AF moving unit may include a balancing magnet 185. Additionally, the AF moving unit may further include a lens module 400 mounted on the bobbin 110.

And the initial position of the AF moving unit is the initial position of the AF moving unit without power being applied to the first coil 120, or the upper and lower elastic members 150 and 160 are elastically deformed only by the weight of the AF moving unit. This may be the location where the AF moving unit is placed.

In addition, the initial position of the bobbin 110 is the position at which the AF moving part is placed when gravity acts in the direction from the bobbin 110 to the base 210, or, conversely, when gravity acts in the direction from the base 210 to the bobbin 110. It can be.

The sensing magnet 180 provides a magnetic field for the first position sensor 170 to sense. The balancing magnet 185 may serve to cancel out the influence of the magnetic field of the sensing magnet 180 and balance the weight of the sensing magnet 180.

The sensing magnet 180 may be placed on the bobbin 110. Additionally, the balancing magnet 185 may be placed on the bobbin 110.

For example, the sensing magnet 180 may be placed or seated in the first groove 18A of the bobbin 110, and may be coupled to the first groove 18A using an adhesive or the like. The sensing magnet 180 may be arranged to correspond to or face the first position sensor 170 in the direction of the optical axis (OA).

The balancing magnet 185 may be placed or seated in the second groove 18B of the bobbin 110 and may be coupled to the second groove 18B using an adhesive or the like. The balancing magnet 185 may be located on the opposite side of the sensing magnet 180. For example, the sensing magnet 180 and the balancing magnet 185 may be disposed on two corner portions (or sides) of the bobbin 110 located on opposite sides.

At least a portion of the sensing magnet 180 (or the balancing magnet 185) may be exposed or opened from the bobbin 110.

At least a portion of one side (e.g., lower surface) of the sensing magnet 180 corresponding to the first position sensor 170 may be exposed outside the groove 18A of the bobbin 110, but is not limited to this, and is not limited to this. In an embodiment, one side of the sensing magnet 180 facing the first position sensor 170 may not be exposed from the bobbin 110.

At least a portion of the balancing magnet 185 may be exposed outside the second groove 18B of the bobbin 110, but is not limited thereto. In another embodiment, the lower portion of the balancing magnet 185 is exposed from the bobbin 110. It may not work.

For example, at least a portion (eg, lower part) of the sensing magnet 180 (or balancing magnet 185) may protrude downward from the lower surface of the bobbin 110. This is to improve the sensitivity of the first position sensor 170 that senses the strength of the magnetic field of the sensing magnet 180 by reducing the separation distance between the sensing magnet 180 and the first position sensor 170 in the optical axis direction. In another embodiment, at least a portion (eg, lower portion) of the sensing magnet 180 (or balancing magnet 185) may not protrude from the lower surface of the bobbin 110.

For example, the sensing magnet 180 may be a unipolar magnetized magnet having one N pole and one S pole. For example, the interface between the N and S poles of the sensing magnet 180 may be parallel to a direction perpendicular to the optical axis OA. For example, the N and S poles of the sensing magnet 180 may face each other in the optical axis direction, but are not limited to this. In another embodiment, the sensing magnet may be arranged so that the N pole and the S pole face each other in a direction perpendicular to the optical axis. For example, in another embodiment, the boundary surface between the N pole and the S pole of the sensing magnet 180 disposed on the bobbin 110 may be parallel to the optical axis OA.

In another embodiment, the sensing magnet 180 may be a “bipolar magnetization magnet” or a “four-pole magnet” including two N poles and two S poles. For example, the sensing magnet 180 may include a first magnet unit, a second magnet unit, and a partition wall disposed between the first magnet unit and the second magnet unit.

The first magnet portion may include an N pole, an S pole, and a first boundary portion between the N pole and the S pole.

The second magnet portion may include an N pole, an S pole, and a second boundary portion between the N pole and the S pole. The partition wall separates or isolates the first magnet portion from the second magnet portion, and may be a portion that does not substantially have magnetism and has little polarity. For example, the partition wall may be a non-magnetic material, air, etc. The partition may be expressed as a “non-magnetic partition”, a “neutral zone”, or a “neutral zone”.

Each of the first boundary portion and the second boundary portion may be a naturally occurring part to form a magnet consisting of one N pole and one S pole, and the partition wall may be artificially generated when magnetizing the first magnet portion and the second magnet portion. The width of the partition wall may be larger than the width of the first boundary portion (or the width of the second boundary portion).

For example, the first magnet portion and the second magnet portion may be arranged to face each other in the optical axis direction. For example, the partition wall may be perpendicular to the optical axis and parallel to a straight line passing through the optical axis.

The shape of the sensing magnet 180 may be a cylinder, a cylindrical shape, a semi-circular pillar, or a polyhedron shape (eg, a hexahedron), but is not limited thereto.

For example, the sensing magnet 180 may have a cylindrical shape in which the length in the optical axis direction (S1, see FIG. 3A) is longer than the length in the direction perpendicular to the optical axis (S2), which causes the hole (S1) of the bobbin 110. 18A), it can be easily inserted or coupled, and the separation distance from the first position sensor 170 in the optical axis direction can be reduced. In another embodiment, the length of the sensing magnet 180 in the direction of the optical axis may be equal to or smaller than the length in the direction perpendicular to the optical axis.

When the sensing magnet 180 has a cylindrical or cylindrical shape, the magnetic field distribution of the sensing magnet 180 detected by the first position sensor 170 may be uniform, and this improves the sensitivity of the first position sensor 170. It can be.

For example, the cross-sectional shape of the sensing magnet 180 cut in a direction perpendicular to the optical axis may be circular, oval, or polygonal (eg, triangular, square, or pentagonal), but is not limited thereto.

The description of the polarity and shape of the sensing magnet 180 described above may be equally applied or inferred to the balancing magnet 185. For example, the balancing magnet 185 may be the same as the sensing magnet 180.

Referring to FIGS. 16A to 16D, for example, the lower surface, lower surface, or lower end of the sensing magnet 180 (or balancing magnet 185) may be located lower than the lower surface, lower, or lower end of the first coil 120. And in other embodiments, the former may be located higher than the latter or may be of the same height.

Or, for example, the upper surface, top, or top of the sensing magnet 180 (or balancing magnet 185) may be positioned lower than the top, top, or top of the first coil 120, and in another embodiment, the former or the latter. It may be higher or the same height.

In another embodiment, the sensing magnet may be placed on the circuit board 250 or the base 210, and the first position sensor may be placed on the bobbin 110.

In another embodiment, the first position sensor may be placed on the bobbin 110, and the sensing magnet may be placed on the housing 140 to face the first position sensor in a direction perpendicular to the optical axis.

In another embodiment, the first position sensor may be placed in the housing 140, and the sensing magnet may be placed in the bobbin 110 to face the first position sensor in a direction perpendicular to the optical axis.

The sensing magnet 180 may move in the optical axis direction together with the bobbin 110, and the separation distance between the sensing magnet 180 and the first position sensor 170 may vary depending on the movement of the sensing magnet 180. The first position sensor 170 can detect the strength of the magnetic field or magnetic force of the sensing magnet 180 moving in the optical axis direction and output an output signal according to the detected result.

For example, the intensity of the magnetic field or magnetic force detected by the first position sensor 170 may change based on the displacement of the bobbin 110 in the optical axis direction or the separation distance between the first position sensor 170 and the sensing magnet 180. The first position sensor 170 can output an output signal proportional to the strength of the detected magnetic field, and the displacement of the bobbin 110 in the optical axis direction can be determined by using the output signal of the first position sensor 170. can be detected.

Referring to FIGS. 4A to 4C , the housing 140 accommodates at least a portion of the bobbin 110 inside and supports the magnet 130. The housing 140 may be included in the ‘OIS moving part (or movable part)’. The OIS moving unit may be moved in a direction perpendicular to the optical axis by driving the OIS through interaction between the magnet 130 and the second coil 230.

The housing 140 may be placed inside the cover member 300 and between the cover member 300 and the bobbin 110.

The outer surface of the housing 140 may be spaced apart from the inner surface of the side plate of the cover member 300, and the housing 140 may be moved by OIS driving due to the space between the housing 140 and the cover member 300. You can.

Housing 140 may be shaped like a hollow pillar including an opening or hollow 26A.

For example, the housing 140 may have a polygonal (eg, square or octagonal) or circular opening 26A, and the opening 26A may be a through hole that penetrates the housing 140 in the optical axis direction.

Housing 140 may include side and corner portions. For example, the housing 140 may include a plurality of side portions 141-1 to 141-4 and a plurality of corner portions 142-1 to 142-4.

For example, the housing 140 may include first to fourth side portions 141-1 to 141-4 and first to fourth corner portions 142-1 to 142-4.

The first to fourth side portions 141-1 to 141-4 may be spaced apart from each other. Each of the corner portions 142-1 to 142-4 of the housing 140 may be disposed or located between two adjacent sides, and the side portions 141-1 to 141-4 may be connected to each other. .

For example, the corner portions 142-1 to 142-4 may be located at a corner or edge of the housing 140. For example, the number of side portions of the housing 140 is four and the number of corner portions is four, but the number is not limited thereto.

Each of the side portions 141 - 1 to 141 - 4 of the housing 140 may be arranged parallel to a corresponding one of the side plates 302 of the cover member 300 .

The horizontal length of each of the side portions 141-1 to 141-4 of the housing 140 may be greater than the horizontal length of each of the corner portions 142-1 to 142-4, but is not limited thereto. .

The first side 141-2 and the second side 141-2 of the housing 140 may be located on opposite sides of each other, and the third side 141-3 and the fourth side 141-4 may be located on opposite sides of each other. It can be located on the opposite side. Each of the third side 141-3 and the fourth side 141-4 of the housing 140 may be located between the first side 141-2 and the second side 141-2.

In order to prevent the cover member 300 from colliding directly with the inner surface of the top plate 301, a stopper 144 may be provided on the top, top, or upper surface of the housing 140. For example, the stopper 144 may be placed or arranged on at least one of the side and corner portions of the housing 140.

Additionally, the upper, upper, or upper surface of the corner portions 142-1 to 142-4 of the housing 140 may include a guide protrusion 146 for guiding the damper applied to the support member 220.

At least one first coupling portion 143 coupled to the first outer frame 152 of the upper elastic member 150 may be provided on the top, top, or upper surface of the housing 140. Additionally, at least one second coupling portion 146 coupled to and fixed to the second outer frame 162 of the lower elastic member 160 may be provided on the lower, bottom, or lower surface of the housing 140.

Each of the first coupling portion 143 and the second coupling portion 146 of the housing 140 may be a protrusion, but is not limited thereto, and may be a groove or a flat surface in other embodiments.

The first coupling portion 143 of the housing 140 and the hole 152a of the first outer frame 152 of the upper elastic member 150 may be coupled using heat fusion or adhesive, and the housing 140 The second coupling portion 146 and the hole 162a of the second outer frame 162 of the lower elastic member 160 may be coupled.

The housing 140 may include a seating portion 141 (or “receiving portion”) for accommodating the magnet 130. For example, the seating portion 141 may be formed on at least one of the side portions 141-1 to 141-4 of the housing 140. For example, the seating portion 141 may be formed below or at the bottom of at least one of the side portions 141-1 to 141-4 of the housing 140.

For example, the seating portion 141 may be provided on the inner surface of each of the side portions 141-1 to 141-4 of the housing 140, but is not limited thereto, and in another embodiment, may be provided on the outer surface. there is. In an embodiment in which the magnet is disposed at the corners of the housing 140, the seating portion may be formed at the corners of the housing 140.

For example, the seating portion 141 of the housing 140 may correspond to the magnet 130 or may be formed as a groove having a shape that matches, but is not limited to this.

For example, the seating portion 141 may include a first opening facing the first coil 120. Additionally, the seating portion 141 may include a second opening exposing the lower portion or lower end of the magnet 130.

For example, one side of the magnet 130 fixed to or placed on the seating portion 141 of the housing 140 may be exposed through the first opening of the seating portion 141. Additionally, the lower surface of the magnet 130 fixed or placed on the seating portion 141 of the housing 140 may be exposed through the second opening of the seating portion 141.

For example, the bottom or bottom of the magnet 130 may protrude from the bottom of the housing 140 toward the circuit board 250. For example, the magnet 130 may be fixed to the seating portion 141 with an adhesive. The housing 140 may include an injection hole 141A for injecting adhesive. The injection hole 141A may be in communication with the seating portion 141.

Support members 220-1 to 220-4 may be disposed in the corner portions 142-1 to 142-4 of the housing 140. The corner portions 142-1 to 142-4 of the housing 140 may be provided with a hole 147 through which the support members 220-1 to 220-4 pass.

For example, the housing 140 may include a hole 147 penetrating the upper portions of the corner portions 142-1 to 142-4.

At least one support member 220-1 to 220-4 may be disposed on at least one of the corner portions 142-1 to 142-4 of the housing 140. For example, two support members 20A and 20B may be disposed at each corner portion 142-1 to 142-4 of the housing 140, and two holes 147a may be formed at each corner portion of the housing 140. , 147b) can be formed.

The hole 147 may be a through hole penetrating the housing 140 in the optical axis direction, but is not limited thereto. In another embodiment, the housing may include grooves or escape grooves to avoid spatial interference with the support member instead of the hole 147. In this case, the number of grooves may be the same as the number of support members, for example, other In an embodiment, the hole may have a structure that is recessed from the outer surface of the corner portion of the housing 140, and at least a portion of the hole may be open to the outer surface of the corner portion.

One end of the support member 220 may pass through the hole 147 and be connected or bonded to the upper elastic member 150.

For example, a damper may be disposed in the hole 147. In order to easily apply the damper, the diameter of the hole 147 may gradually increase from the top to the bottom of the housing 140, but is limited to this. This is not the case, and in other embodiments, the diameter of the hole 147 may be constant.

The housing 140 may be provided with at least one stopper 149 protruding from the outer surface of the side portions 141-1 to 141-4, and the at least one stopper 149 may be positioned so that the housing 140 is positioned in the optical axis direction. It is possible to prevent the outer surface of the housing 140 from directly colliding with the cover member 300 when moving in a direction perpendicular to the.

Corner portions 142- are used not only to form a path along which the support member 220 passes, but also to avoid spatial interference between the support member 220 and the corner portions 142-1 to 142-4 of the housing 140. An escape groove 148 or a groove may be provided on the outer surface of 1 to 142-4). The escape groove 148 may be connected to the hole 147 of the housing 140.

Referring to FIG. 4A, the upper surface 60B of the corner portions 142-1 to 142-4 of the housing 140 may include two or more surfaces having a step in the optical axis direction. The height of the two or more surfaces may become lower as they approach the corners of the housing 140. The hole 147 has a lower height among the two or more surfaces and may be formed on the surface closest to the corner of the housing 140.

For example, the upper surface 60B of the corner portions 142-1 to 142-4 of the housing 140 has a first surface 61, a second surface 62 having a step from the first surface 61, and a second surface 60B. It may include a second side 62 and a third side 63 having a step.

For example, the second surface 62 may be lower than the first surface 61, and the third surface 63 may be lower than the second surface 62. In addition, the first side 61 is located closest to the center of the housing 140, the third side 63 is located farthest from the center of the housing 140, and the second side 62 is located closest to the center of the housing 140. It may be located in the middle of the third side 63.

For example, the first surface 61 of the corner portions 142-1 to 142-4 of the housing 140 may be lower than the upper surface 60A of the side portions 141-1 to 141-4 of the housing 140. , but is not limited to this, and in other embodiments, the former may be equal to or higher than the latter.

For example, the first coupling portion 143 may be formed on the first surface 61 of the corner portions 142-1 to 142-4 of the housing 140, and the hole 147 may be formed at the corner of the housing 140. It may be formed on the third surface 63 of the portions 142-1 to 142-4.

At the edges of the second surface 62 and the third surface 63 of the corner portions 142-1 to 142-4 of the housing 140, there are grooves protruding from the second surface 62 and the third surface 63. Guide protrusions 146 may be formed. For example, dampers may be disposed on the second and third surfaces 62 and 63 of the corner portions 142-1 to 142-4 of the housing 140, and the guide protrusion 146 is such that the damper is disposed on the housing ( 140) It can play a role in preventing overflow. Additionally, the damper may be disposed in the hole 147, and at least a portion of the damper may be in contact with the support member 220.

The housing 140 may include a groove 145 formed at a position corresponding to the protrusion 111 of the bobbin 110. For example, the groove 145 may be formed on the inner surface of at least one of the corner portions 142-1 to 142-4 of the housing 140. In another embodiment, the groove may be formed in at least one of the sides of the housing 140.

For example, the groove portion 145 may be open at the top, and the groove portion 145 may have an opening on a side facing the outer surface of the corner portion of the bobbin 110.

The magnet 130 may be placed in the housing 140. For example, the magnet 130 may be disposed between the side plate 302 and the bobbin 110 of the cover member 300. For example, the magnet 130 may be disposed within the seating portion 141 of the housing 140.

For example, the magnet 130 may be disposed on the side portions 141-1 to 141-4 of the housing 140.

At the initial position of the AF moving unit, the magnet 130 is perpendicular to the optical axis OA and is disposed in the housing 140 so that at least a portion overlaps the first coil 120 in a direction parallel to a straight line passing through the optical axis OA. You can.

The magnet 140 may include at least one magnet (magnet unit).

For example, the magnet 140 may include a plurality of magnets.

For example, at least two magnets 130 may be placed on the sides 141-1 to 141-4 of the housing 140 facing each other.

For example, the magnet 130 may include four magnets 130-1 to 130-4 (or magnet units). For example, each of the magnets 130-1 to 130-4 may be disposed on a corresponding one of the sides 141-1 to 141-4 of the housing 140.

The shape of each of the magnets 130-1 to 130-4 corresponds to the side portions 141-1 to 141-4 of the housing 140 and may be polyhedral (eg, hexahedron).

For example, the cross-sectional shape of each of the first to fourth magnets 130-1 to 130-4 in the direction perpendicular to the optical axis may be polygonal, for example, triangle, square, pentagon, diamond, or trapezoid. It is not limited.

For example, each of the magnets 130-1 to 130-4 may be a unipolar magnetization magnet, but is not limited thereto. In another embodiment, each of the magnets 130-1 to 130-4 may be a bipolar magnetization magnet or a four-pole magnet including two N poles and two S poles.

For example, each of the sensing magnet 180 and the balancing magnet 185 may not overlap the first coil 120 in the optical axis (OA) direction, but the present invention is not limited thereto. In another embodiment, the sensing magnet and the balancing magnet may overlap the first coil in the optical axis direction.

In another embodiment, the magnet may be placed in the corner portions 142-1 to 142-4 of the housing 140. In this case, the magnet may have a polyhedral shape that makes it easy to be seated or placed in the corner portions of the housing 140. . For example, in this case, the magnet may include a portion where the length of the magnet in the transverse direction decreases in the direction from the first surface of the magnet to the second surface of the magnet. Here, the first side of the magnet may be a side facing the first coil 120, and the second side of the magnet may be a side opposite to the first side.

In another embodiment, the magnet may be placed on the bobbin 110, and the first coil may be placed on the housing 140.

The first magnet 130-1 may be disposed between the first corner CA1 and the second corner CA2 of the housing 140, and the second magnet 130-2 may be disposed between the third corner CA1 and the second corner CA2 of the housing 140. It may be placed between the corner CA3 and the fourth corner CA4, and the third magnet 130-3 may be placed between the second corner CA2 and the third corner CA3 of the housing 140. And, the fourth magnet 130-4 may be disposed between the fourth corner CA4 and the first corner CA1 of the housing 140.

For example, each of the first to fourth corners CA1 to CA4 may be a corresponding corner among the first to fourth corner portions 142-1 to 142-4.

The two magnets 130-1 and 130-4 may be arranged adjacent to one corner (eg, CA1) of the housing 140. Additionally, the remaining two magnets 130-2 and 130-3 may be disposed adjacent to another corner (eg, CA3) of the housing 140.

For example, the magnets 130-1 to 130-4 may be disposed to be biased toward two corners CA1 and CA2 of the housing 140 facing each other.

For example, the magnets 130-1 to 130-4 are positioned closer to each other in the second diagonal direction than the two corners (e.g., CA2, CA4) of the housing 140 that face each other in the first diagonal direction. ) can be placed closer to the two corners (eg, CA1, CA3). The first diagonal direction may be perpendicular to the optical axis and may be a direction from the second corner to the fourth corner. The second diagonal direction may be perpendicular to the optical axis and may be a direction from the first corner to the third corner. The first diagonal direction and the second diagonal direction may be perpendicular to each other.

Referring to FIGS. 5A and 5B , the elastic member may be coupled to the bobbin 110 and the housing 140. The elastic member may elastically support the bobbin 110 with respect to the housing 140. For example, the elastic member may include at least one of the upper elastic member 150 and the lower elastic member 160.

For example, the upper elastic member 150 may be coupled to the top, upper surface, or upper end of the bobbin 110 and the upper, upper surface, or upper end of the housing 140. For example, the lower elastic member 160 may be coupled to the lower, lower, or lower end of the bobbin 110 and the lower, lower, or lower end of the housing 140.

The upper elastic member 150 may include a plurality of upper elastic members 150-1 and 150-2 that are electrically separated from each other. For example, the plurality of upper elastic members 150-1 and 150-2 may be arranged to be spaced apart from each other.

Figure 5a shows two electrically separated upper elastic members, but the number is not limited thereto, and in other embodiments, there may be one or three or more.

At least one of the first and second upper elastic members 150-1 and 150-2 is a first inner frame 151 coupled to the bobbin 110 and a first outer frame 152 coupled to the housing 140. ), and may include a first frame connection portion 153 connecting the first inner frame 151 and the first outer frame 152. The elastic member may be expressed as a “spring” or an “elastic unit,” the inner frame may be expressed as an “inside part,” and the outer frame may be expressed as an “outside part.”

For example, a hole 151a may be provided in the first inner frame 151 of the upper elastic member 150 for coupling to the first coupling portion 113 of the bobbin 110, but is not limited thereto. For example, the hole 152a of the first inner frame 151 may have at least one cut portion for the adhesive to penetrate between the first coupling portion 113 of the bobbin 110 and the hole 151a.

The first outer frame 152 of the upper elastic member 150 may be provided with a hole 152a for coupling to the first coupling portion 143 of the housing 140.

The first outer frame 152 includes a first coupling portion 71 coupled to the housing 140, a second coupling portion 72 coupled to the support member 220, and a first coupling portion 71 and a second coupling portion. It may include a connecting portion 73 connecting the coupling portion 72.

The first coupling portion 71 may include at least one coupling region coupled to the housing 140 (eg, corner portions 142-1 to 142-4). For example, the coupling area of the first coupling part 71 may include at least one hole 152a coupled to the first coupling part 143 of the housing 140.

For example, the coupling area may have one or more holes, and one or more first coupling parts may be provided in the corner portions 142-1 to 142-4 of the housing 140 correspondingly. In the embodiment of FIG. 5A, the coupling area of the first coupling part 71 is implemented to include the hole 152a, but is not limited thereto. In other embodiments, the coupling area has various shapes sufficient to couple with the housing 140. , For example, it may be implemented in the form of a groove, etc.

The second coupling portion 72 may have a hole 52 through which the support member 220 passes. One end of the support member 220 that passes through the hole 52 may be directly coupled to the second coupling portion 72 by a conductive adhesive member or solder 901, and the second coupling portion 72 and the support member ( 220) may be electrically connected.

For example, the second coupling portion 72 is an area where the solder 901 is disposed for coupling to the support member 220, and may include the hole 52 and an area around the hole 52.

In an embodiment in which two support members are disposed at one corner of the housing 140, the first outer frame 151 may include two second coupling portions 72A and 72B corresponding to one corner of the housing 140. You can. For example, the second coupling portion 72 is a 2-1 coupling portion 72A coupled to one of the two support members 20A and 20B, and the other of the two support members 20A and 20B. It may include a 2-2 coupling portion 72B coupled to one.

The connecting portion 73 may connect the first coupling portion 71 and the second coupling portion 72 to each other. For example, the connection part 73 may connect the coupling area of the second coupling part 72 and the first coupling part 71.

For example, the connection portion 73 includes a first connection portion 73A connecting the first coupling portion 71 of the upper elastic member 150 and the 2-1 coupling portion 72A, and a first coupling portion 73A of the upper elastic member 150. It may include a second connection part 73B connecting the first coupling part 71 and the second-second coupling part 72B.

Each of the first and second connection parts 73A and 73B may include a bent part that is bent at least once or a curved part that is bent at least once, but is not limited thereto, and may have a straight shape in another embodiment.

For example, the first coupling portion 71 may contact the upper surface of the corner portions 142-1 to 142-4 of the housing 140, and the corner portions 142-1 to 142-4 of the housing 140. It can be supported by . For example, the second coupling portion 72 is not supported by the upper surface of the housing 140 and may be spaced apart from the housing 140.

Additionally, a damper (not shown) may be placed in the empty space between the connection portion 73 and the housing 140 to prevent oscillation due to vibration.

For example, the first upper elastic member 150-1 may include two first outer frames 152 coupled to two corner portions (e.g., 142-1M 142-2) of the housing 140, The second upper elastic member 150-2 may include two first outer frames 152 coupled to the other two corner portions (eg, 142-3 and 142-4) of the housing 140.

In FIG. 5A, there is one first outer frame disposed at one corner of the housing 140, but it is not limited to this. In another embodiment, two first outer frames spaced apart from each other may be disposed at one corner of the housing 140, and each of the two first outer frames includes one first coupling part, one second coupling part, And it may include one connecting part connecting the first coupling part and the second coupling part.

A first bonding portion 41 to which one end of the first coil 120 is coupled may be provided at one end of the first inner frame of the first upper elastic member 150-1.

A second bonding portion 42 to which the other end of the first coil 120 is coupled may be provided at the other end of the first inner frame of the second upper elastic member 150-2.

The first coil 120 may be electrically connected to the upper elastic member 150. For example, one end of the first coil 120 may be electrically connected to the first upper elastic member 150-1, and the other end of the first coil 120 may be electrically connected to the second upper elastic member 150-2. It can be connected to .

In another embodiment, the first coil may be electrically connected to at least one of the upper elastic member and the lower elastic member.

With respect to the first and second bonding parts 41 and 42, the term “bonding part” may be used instead of a pad part, a connection terminal, a solder part, or an electrode part.

The lower elastic member 160 may include one spring or elastic unit, but is not limited thereto. In another embodiment, it may include a plurality of springs or a plurality of elastic units spaced apart from each other.

The lower elastic member 160 is a second inner frame 161 coupled or fixed to the lower, lower, or lower end of the bobbin 110, and a second outer frame 161 coupled or fixed to the lower, lower, or lower end of the housing 140. It may include a frame 162 and a second frame connection portion 163 that connects the second inner frame 161 and the second outer frame 162 to each other.

Each of the first frame connection portion 153 of the upper elastic member 150 and the second frame connection portion 163 of the lower elastic member 160 is formed to be bent or curved (or curved) at least once to form a pattern of a certain shape. can be formed. Through the change in position and slight deformation of the connection portion 72 and the first and second frame connection portions 153 and 163, the bobbin 110 moves upward and/or downward in the first direction elastically (or elastically). It can be supported.

The second inner frame 161 may be provided with a hole 161a for coupling with the second coupling portion 117 of the bobbin 110, and the second outer frame 162 may be provided with a second coupling portion of the housing 140. A hole 162a may be provided for coupling to the portion 146.

The upper elastic member 150 and the lower elastic member 160 may be formed of leaf springs, but are not limited thereto and may also be implemented as coil springs, etc. Additionally, the upper elastic member 150 and the lower elastic member 160 may be formed of a conductive material, for example, a metal material.

In order to absorb and buffer the vibration of the bobbin 110, the lens driving device 100 is a second device disposed between the upper elastic members 150-1 and 150-2 and the bobbin 110 (or housing 140). 1 Additional dampers (not shown) may be provided.

For example, the first damper is disposed between the first frame connection portion 153 and the bobbin 110 of each of the upper elastic members 150-1 and 150-2 and is coupled to both or the first frame connection portion 153. It may be placed on the bobbin 110 and coupled to both.

Also, for example, the lens driving device 100 is disposed between the second frame connection portion 163 of the lower elastic member 160 and the bobbin 110 (or housing 140) and includes a second damper (not shown) coupled to both. ) may be further provided.

Also, for example, the lens driving device 100 may further include a third damper (not shown) disposed between the support member 220 and the hole 147 of the housing 140 and coupled to both.

Also, for example, the lens driving device 100 may further include a fourth damper (not shown) disposed at one end of the second coupling portion 72 and the support member 220 and coupled to both. Additionally, the lens driving device 100 may further include a fifth damper (not shown) disposed at the other end of the support member 220 and the terminal 27.

Also, for example, in another embodiment, a damper (not shown) may be further disposed between the inner surface of the housing 140 and the outer peripheral surface of the bobbin 110.

The support member 220 may support the housing 140 to be movable in a direction perpendicular to the optical axis OA with respect to the base 210. The support member 220 may electrically connect at least one of the upper or lower elastic members 150 and 160 to the circuit board 250.

Referring to FIG. 6 , for example, the support member 220 may be coupled to the upper elastic member 150. For example, the support member 220 may include a plurality of support members 220-1 to 220-4.

For example, the support member 220 may include first to fourth support members 220-1 to 220-4 corresponding to the corner portions 142-1 to 142-4 of the housing 140.

For example, the support member 200 may be disposed at each corner of the housing 140.

For example, two support members 20A and 20B may be disposed at each corner of the housing 140. For example, the lens driving device 100 may include a total of eight support members, but is not limited thereto.

In another embodiment, one support member may be disposed at each corner of the housing 140. In another embodiment, two support members may be disposed on at least one of the corner portions of the housing 140, and one support member may be disposed on at least another one of the corner portions of the housing 140.

In another embodiment, for example, two support members may be disposed at each of two corner portions of the housing 140, and one support member may be disposed at each of the two corner portions of the housing 140.

For example, each of the first to fourth support members 220-1 to 220-4 may be disposed on a corresponding one of the first to fourth corner portions 142-1 to 142-4 of the housing 140. You can.

For example, each of the first to fourth support members 220-1 to 220-4 may include two spaced apart support members 20A and 20B (or wires).

One end of the support member 220 may be connected or coupled to the upper elastic member 150.

The first to fourth support members 220-1 to 220-4 may be connected or combined with the upper elastic member 150.

For example, the first support member 220-1 may be connected or coupled to the second coupling portion 72 of the first outer frame of any one of the first upper elastic members 150-1, and the second support member 220-1 (220-2) may be connected or coupled to the second coupling portion 72 of any other first outer frame of the first upper elastic member 150-1.

For example, the third support member 220-3 may be connected or coupled to the second coupling portion 72 of the first outer frame of any one of the second upper elastic members 150-2, and the fourth support member (220-4) may be connected or coupled to the second coupling portion 72 of any other first outer frame of the second upper elastic member 150-2.

For example, the first support member 220-1 and the second support member 220-1 may be electrically connected to the first upper elastic member 150-1, and the third support member 220-1 and the second support member 220-1 may be electrically connected to the first upper elastic member 150-1. 4 The support member 220-4 may be electrically connected to the second upper elastic member 150-2.

For example, one end of the 1-1st support member 20A of each of the first to fourth support members 220-1 to 220-4 is connected to two second coupling portions 72A of the first outer frame 151. 72B) may be coupled to any one (72A), and one end of the 1-2 support member 20B is connected to the other of the two second coupling portions 72A and 72B of the first outer frame 151 ( 72B) can be combined.

In another embodiment, the upper elastic member may include four separate or spaced upper elastic members, and the support members 220-1 to 220-4 may be one of the four upper elastic members. It may be coupled to two coupling parts.

Two of the support members 220-1 to 220-4 (220-1, 220-3) may be electrically connected to the first coil 120. For example, two support members 220-1 and 220-3 may be disposed at two corner portions of the housing 140 that face each other diagonally.

In another embodiment, two support members electrically connected to the first coil 120 may be disposed at two selected corners among the four corners of the housing 140. For example, two support members electrically connected to the first coil 120 may be disposed at two corners adjacent to one side of the housing or may be disposed at two corners of the housing diagonally opposite each other. .

The other end of the support member 220 may be connected or coupled to the terminal portion.

For example, the other end of each of the support members 220-1 to 220-4 may be connected or coupled to a corresponding one of the terminals 27A1 to 27A4.

Each of the support members 220-1 to 220-4 may be electrically connected to a corresponding one of the terminal portions 27A1 to 27A4. For example, the support members 220-1 to 220-4 may electrically connect the upper elastic members 150-1 to 1540-3 and the terminals 27A1 to 27A4.

For example, the first support member 220-1 may electrically connect the first upper elastic member 150-1 and the first terminal 27A1, and the second support member 220-2 may electrically connect the first upper elastic member 150-1 to the first terminal 27A1. The member 150-2 and the second terminal 27A2 may be electrically connected.

For example, the third support member 220-3 may electrically connect the second upper elastic member 150-2 and the third terminal 27A3, and the fourth support member 220-4 may electrically connect the second upper elastic member 150-2 to the third terminal 27A3. The member 150-2 and the fourth terminal 27A4 may be electrically connected.

In an embodiment in which the upper elastic member includes four separated or spaced upper elastic members, each of the first to fourth support members 220-1 to 220-4 corresponds to one of the four upper elastic members. and the corresponding one of the first to fourth terminals 27A1 to 27A4 may be electrically connected.

The first to fourth support members 220-1 to 220-4 may be spaced apart from the housing 140, and may not be fixed to the housing 140, but may be connected to the first to fourth support members 220-1 to 220-4 through solder or a conductive adhesive member. One end of each of the four support members 220-1 to 220-4 may be directly connected or coupled to the second coupling portion 72 of the first and second upper elastic members 150-1 and 150-2. there is.

In another embodiment, the terminal portion 27 may be omitted, and the other end of each of the first to fourth support members 220-1 to 220-4 may be directly connected or coupled to the circuit board 250. For example, the other ends of each of the first to fourth support members 220 - 1 to 220 - 4 may be directly connected or coupled to the lower surface of the circuit board 250 . For example, the other ends of each of the first to fourth support members 220 - 1 to 220 - 4 may be directly electrically connected to the circuit board 250 .

For example, at least one of the 1-1st support member 20A and the 1-2nd support member 20B disposed at one corner of the housing 140 may be electrically connected to the circuit board 250.

In another embodiment, the other end of each of the support members 220-1 to 220-4 may be coupled to the base 210, and the other end of the support members 220-1 to 220-4 may be attached to the base 210. A wiring or circuit pattern may be formed to electrically connect the terminal and the circuit board 250.

The first coil 120 may be electrically connected to the circuit board 250 through the upper elastic member 150 and the terminal portion 27.

For example, one end of the first coil 120 may be electrically connected to the first upper elastic member 150-1 and the first support member 220-1, and the first support member 220-1 and the first support member 220-1 It may be electrically connected to the first pad A1 of the circuit board 250 through the terminal 27A1.

Additionally, the other end of the first coil 120 may be connected to the second upper elastic member 150-2 and the third support member 220-3, and the third support member 220-3 and the third terminal 27A3 ) may be electrically connected to the second pad A2 of the circuit board 250.

In another embodiment, the first coil 120 may be electrically connected to at least one of the upper elastic member 150 and the lower elastic member. For example, the lower elastic member may include two lower elastic members spaced apart from each other, and the first coil 120 may be electrically connected to the two lower elastic members. In another embodiment, the first coil 120 may be electrically connected to the upper elastic member and the lower elastic member.

For example, one driving signal may be provided to the first coil 120 through the first and second pads A1 and A2 of the circuit board 250.

For example, one end of the first coil 120 may be electrically connected to the first support member 220-1 and electrically connected to the first pad A1 of the circuit board 250 through the first terminal 27A1. can be connected Additionally, the other end of the second coil 120 may be electrically connected to the third support member 220-3 and may be electrically connected to the second pad A2 of the circuit board 250 through the third terminal 27A3. You can.

The support member 220 may be implemented as a member capable of supporting elasticity, for example, a suspension wire, a leaf spring, or a coil spring. The support member 220 may be formed of conductive material and/or non-conductive material. For example, the support member 220 may be formed of metal and/or a non-conductive material.

Additionally, in another embodiment, the support member 220 may be formed integrally with the upper elastic member 150.

7 and 8, the circuit board 250 is disposed under the housing 140 and/or bobbin 110. Or, for example, the circuit board 250 may be disposed below the lower elastic member 160. Additionally, the circuit board 250 may be placed on the upper surface of the base 210.

For example, the circuit board 250 may include a body 252 disposed on the upper surface of the base 210, and an opening 24A formed in the body 252.

The opening 24A of the circuit board 250 corresponds to or faces at least one of the opening 25A of the bobbin 110, the opening 26A of the housing 140, and/or the opening 28A of the base 210. can do. For example, the opening 24A may be a through hole that penetrates the body 252 in the optical axis direction.

When viewed from above, the shape of the body 252 of the circuit board 250 may coincide with or correspond to the upper surface of the base 210, for example, a square shape, but is not limited thereto.

The circuit board 250 may include a terminal portion 253 extending from the body 252. The terminal portion 253 may be bent and extended from the body 252 to the side of the base 210.

The terminal portion 253 of the circuit board 250 may include a plurality of terminals 251 for receiving electrical signals from the outside or outputting electrical signals to the outside.

For example, the circuit board 250 may include two terminal portions disposed on two sides of the body 252 that face each other, but the present invention is not limited thereto, and the number of terminal portions may be one or more.

A driving signal may be provided to each of the first coil 120 and the second coil 230 through a plurality of terminals 251 provided on the terminal portion 253 of the circuit board 250.

For example, a driving signal or power may be supplied to the second coil 230 through the circuit board 250. The power or driving signal provided to the second coil 230 may be a direct current signal or an alternating current signal, or may include a direct current signal and an alternating current signal, and may be in the form of a current or voltage.

By interaction between the magnets 130-1 to 130-4 and the second coil units 230-1 to 230-4 to which the driving signal is provided, the housing 140 moves in a direction perpendicular to the optical axis direction, for example, the second coil unit 230-1 to 230-4. It may move in two directions (eg, X-axis direction) and/or a third direction (eg, Y-axis direction), whereby hand shake correction may be performed.

For example, the first and second pads A1 and A2 of the circuit board 250 may be electrically connected to any two corresponding terminals 251 of the circuit board 250.

Additionally, a driving signal may be provided to the first position sensor 170 through the terminals 251 of the circuit board 250, an output signal of the first position sensor 170 may be received, and the received first position sensor 170 may be provided. The output signal of the position sensor 170 can be output to the outside. For example, the first position sensor 170 may be electrically connected to corresponding terminals among the terminals 251 of the circuit board 250.

The circuit board 250 may be made of an FPCB, but this is not limited. It is also possible to form terminals of the circuit board 250 directly on the surface of the base 210 using a surface electrode method, etc.

The circuit board 250 may be provided with an escape portion 23 through which the support members 220-1 to 220-4 pass to avoid spatial interference with the support members 220-1 to 220-4. .

For example, in FIG. 7, the relief portion 23 may be formed at a corner of the body 252 and may be in the form of a groove, but it is not limited thereto. In other embodiments, the relief portion 23 may be in the form of a hole or through hole. The support member may pass through a hole or through hole.

In another embodiment, the circuit board 250 may not have an escape portion, and the support members 220-1 to 220-4 may be formed by applying solder to a circuit pattern or pad formed on the upper surface of the circuit board 250. They can also be electrically connected through.

Referring to FIG. 8 , the circuit board 250 may include first and second pads A1 and A2 coupled or connected to two terminals 27A1 and 27A3. For example, the first and second pads A1 and A2 may be formed on the upper surface of the body 252 of the circuit board 250, but this is not limited to this. In another embodiment, the first and second pads A1 and A2 may be formed on the lower surface of the body 252. may be formed. At this time, the upper surface of the body 252 may be the surface facing the housing 140. Additionally, the lower surface of the body 252 may be a surface facing the upper surface of the base 210, or may be a surface opposite to the upper surface of the body 252.

For example, the first pad (A1) may be disposed adjacent to the first escape portion formed at one corner of the body 252, and the second pad (A2) may be disposed at another corner of the body 252. It can be placed adjacent to the second escape section.

For example, the first escape portion and the second escape portion may face each other diagonally. For example, the first escape portion may be adjacent to the first support member 220-1, and the second escape portion may be adjacent to the third support member 220-3. In another embodiment, for example, the first escape portion and the second escape portion may be disposed adjacent to one side of the circuit board 250.

The circuit board 250 may include at least one protrusion 48 protruding from the side, and the protrusion 48 may protrude in a direction perpendicular to the optical axis. The protrusion 48 may be placed, seated, or inserted into the groove 49 of the base 210. The protrusion 48 can serve as an installation guide for correctly placing the circuit board 250 on the base, and the protrusion 48 and the groove 49 allow the circuit board 250 to rotate on the upper surface of the base 210. This can prevent it from becoming distorted or distorted.

The circuit board 250 has at least one through hole formed at a position corresponding to the curved portions 56C and 56D of at least one coil unit (e.g., 230-1 to 230-4) of the second coil 230. 29A) may be included.

When coupling the coil unit (e.g., 230-1) to the pads (R1 to R8) of the circuit board 230, a jig or tweezers is inserted through the through hole (e.g., 230-1) to fix or support the coil unit (e.g., 230-1). 29A). In other embodiments, the through hole 29A may be omitted.

Referring to FIG. 14B , the circuit board 250 may include pads R1 to R6 that are electrically connected to the second coil 230.

For example, the circuit board 250 includes first and second pads R1 to R2 electrically connected to the first coil unit 230-1, and third pads electrically connected to the second coil unit 230-2. and fourth pads (R3 to R4), and fifth and sixth pads (R5, R6) electrically connected to the third coil unit 230-3, and the fourth coil unit 230-4. It may include seventh and eighth pads R7 and R8 that are electrically connected.

Eight pads R1 to R6 electrically connected to the second coil 230 may be disposed on the lower surface of the circuit board 250.

For example, the pads R1 to R8 of the circuit board 250 may be disposed in an area of the lower surface of the circuit board 250 located outside the coil units 230-1 to 230-4.

For example, two pads (eg, R1, R2) may be disposed adjacent to one of the two curved portions (56C, 56D) of the corresponding coil unit (eg, 230-1).

In another embodiment, one of the two pads corresponding to one coil unit (e.g., 230-1) is located in the first area of the lower surface of the circuit board 250 located inside the coil unit (e.g., 230-1). and the other of the two pads may be disposed in the second area of the lower surface of the circuit board 250 located outside the coil unit (eg, 230-1). This is to facilitate bonding between the pad and the coil unit. This may be equally applied to pads corresponding to the second to fourth coil units 230-2 to 230-4.

In another embodiment, both pads may be located inside the coil unit (eg, 230-1) of the second coil 230.

The circuit board 250-1 shown in FIG. 15A is a modified example of FIG. 14B. In FIG. 15A, the first and second pads A11 and A12 may be disposed on the lower surface of the circuit board 250-1. . For example, the first pad A11 may be coupled to the extension portion 50B1 of the first terminal 27A1 using solder and a conductive adhesive member, and the two may be electrically connected. Additionally, for example, the second pad A12 may be coupled to the extension portion 50B1 of the third terminal 27A3 using solder and a conductive adhesive member, and the two may be electrically connected.

Additionally, the circuit board 250-2 shown in FIG. 15B is another modified example of FIG. 14B, and in FIG. 15B, pads R11 to R18 are electrically connected to the coil units 230-1 to 230-4. may be placed on the upper surface of the circuit board 250-2.

The circuit board 250-2 may include a hole 45A for passing at least a portion of the coil units 230-1 to 230-4. For example, since the coil units 230-1 to 230-4 are disposed on the lower surface of the circuit board 250, both ends of the coil units 230-1 to 230-4 are connected to the hole (230-2) of the circuit board 250-2. 45A) can be drawn out to the upper surface of the circuit board 250-2, and both ends of the drawn out coil units 230-1 to 230-4 are pads disposed on the upper surface of the circuit board 250-2. It may be combined or connected to (R11 to R18).

For example, the hole 45A may include an opening that opens to the side of the circuit board 250-2. In another embodiment, it may include an opening that opens to the side of the circuit board 250-2. In another embodiment, the hole 45A may be in the form of a through hole that does not open to the side of the circuit board 250-2.

7 and 9, the base 210 is disposed below the circuit board 250. Additionally, the base 210 may be disposed below the housing 140 and/or the bobbin 110.

The base 210 may have an opening 28A corresponding to the opening 25A of the bobbin 110 or/and the opening 26A of the housing 140, and may have a shape that matches or corresponds to the cover member 300. , for example, may have a square shape. For example, the opening 28A may be a through hole that penetrates the base 210 in the optical axis direction.

A receiving groove 255 or a support portion may be provided in an area of the base 210 facing the terminal 251 of the circuit board 250. The receiving groove 255 of the base 210 may accommodate or support the terminal portion 253 of the circuit board 250 on which the terminal 251 is formed. The receiving groove 255 may be recessed from the outer surface of the base 210.

The base 210 may have an escape portion 212A formed at a corner or corner area to avoid spatial interference with the other end of the support members 220-1 to 220-4. For example, the escape portion 212A may be in the form of a groove or groove.

Also, for example, a groove 38 may be formed on the upper surface of the base 210 adjacent to the opening 28A to avoid spatial interference with the lower elastic member 160, the bobbin 110, or/and the lens module 400. You can.

The upper surface 30 of the base 210 has a first step in the optical axis direction with the first surface 30A and the first surface 30A that contacts or supports the body 252 of the circuit board 250. It may include a second surface (30B) having.

The base 210 may further include a surface 31A (or a first step surface, or a first side surface) connecting the first surface 30A and the second surface 30B. For example, the first step surface 31A may be perpendicular to the first surface 30A, but is not limited thereto. In another embodiment, the first step surface 31A may be an inclined surface, and the first surface 30A may be perpendicular to the first surface 30A. ) and the first step surface 31A may be an obtuse angle or an acute angle. In another embodiment, the first step surface 31A may have a step shape, a curved shape, or a bent shape.

For example, the second surface 30B may be located below the first surface 30A. The second surface 30B may be closer to the lower surface of the base 210 than the first surface 30A.

For example, the second surface 30B may be located between the opening 28A of the base 210 and the side of the upper surface 30 of the base 210.

The base 210 may include a first area where the second coil 230 is placed and a second area where the second coil 230 is not placed.

For example, the first area of the base 210 may be alternatively expressed as a “receiving part,” “receiving groove,” or “receiving area.” For example, the first area of the base 210 may be a recess. At this time, the recess may include an area open in two directions perpendicular to each other.

For example, the first area of the base 210 may include a bottom surface located lower than the top surface of the base 210. Additionally, the first area of the base 210 may include a protrusion, a protruding area, or a protrusion disposed on the bottom surface.

At least a portion of the second coil 230 may be disposed in the first area of the base 210. At least a portion of the circuit board 250 may be disposed on the first area of the base 210, and a lower surface of the circuit board 250 may be spaced apart from a bottom surface of the first area of the base 210.

The first area of the base 210 may include a protrusion, a protruding area, or a protrusion that protrudes higher than the bottom surface.

For example, the protrusion, protruding area, or protrusion of the first area of the base 210 may be disposed in the hollow (or central hole 58) of the coil units 230-1 to 230-3 of the second coil 230. You can.

For example, the base 210 may include seating portions 213A1 to 213A4 for placing, seating, or inserting the second coil 230. The seating portion 213A may be formed on the upper surface 30 of the base 210.

For example, the seating portions 213A1 to 213A4 may be grooves recessed from the upper surface 30 of the base 210. The seating portions 213A1 to 213A4 may be alternatively expressed as “groove” or “seating groove.” For example, the seating portions 213A1 to 213A4 may include a first opening (or a first open area) that opens to the upper surface of the base 210. The seating portions 213A1 to 213A4 shown in FIG. 9 do not include an opening open to the outer surface of the base 210, but in another embodiment, the seating portion has a second opening (or It may also include a second open area). This is to easily insert, place, or wind the second coil 230 in the seating portion.

The base 210 may include a plurality of seating parts corresponding to a plurality of coil units. For example, the base 210 may include four seating portions 213A1 to 213A4 corresponding to the four coil units 230-1 to 230-4. For example, the seating portions 213A1 to 213A4 may be disposed adjacent to each of the first to fourth sides of the upper surface 30 of the base 210.

At least one protrusion 15 for winding or fixing the coil unit of the second coil 230 may be formed on the bottom surface of the seating portions 213A1 to 213A4. For example, the protrusion 15 may be expressed as a “protrusion” instead. The number of protrusions disposed on the bottom surfaces of the seating portions 213A1 to 213A4 may be one or more.

For example, the bottom surface of the seating portions 213A1 to 213A4 may be the second surface 30B of the upper surface 30 of the base 210.

The coil units 230-1 to 230-4 of the second coil 230 are disposed on the second surface 30B of the upper surface 30 of the base 210 or the bottom surface of the seating portions 213A1 to 213A4. You can.

For example, the top, top, or upper surface of the second coil 230 may be located lower than or at the same height as the first surface 30A of the upper surface 30 of the base 210.

For example, a first protrusion 15-1 including two protrusions 16A and 16B spaced apart from each other may be formed in the first seating portion 213A1 where the first coil unit 230-1 is disposed. , a second protrusion 15-2 including one protrusion may be formed in the second seating portion 213A2 where the second coil unit 230-2 is disposed, and the third coil unit 230-3 A third protrusion 15-3 including two protrusions 16A and 16B spaced apart from each other may be formed on the third seating portion 213A3, and a fourth coil unit 230-4 may be formed. A fourth protrusion 15-4 including one protrusion may be formed on the fourth seating portion 213A4. In another embodiment, each of the first to fourth protrusions may include one protrusion or two or more protrusions.

The lengths of the two protrusions 16A and 16B in a direction parallel to the side of the upper surface of the base 210 or in the longitudinal direction of the coil units 230-1 to 230-4 may be different from each other. For example, the length of the first protrusion 16A may be greater than the length of the second protrusion 16B, but the length is not limited thereto. In other embodiments, the length of the first protrusion 16A may be the same or the former may be smaller than the latter.

The depth of the seating portions 213A1 to 213A4 may be greater than the length of the coil units 230-1 to 230-4 of the second coil 230 in the optical axis direction. This prevents the circuit board 250 to which the coil units 230-1 to 230-4 are coupled from being lifted or separated from the upper surface 30 (e.g., the first surface 30A) of the base 210, thereby maintaining the circuit. This is to prevent the bonding force between the substrate 250 and the base 210 from weakening.

In another embodiment, the depth of the seating portions 213A1 to 213A4 may be equal to the length of the coil units 230-1 to 230-4 of the second coil 230 in the optical axis direction.

In another embodiment, the depth of the seating portions 213A1 to 213A4 may be smaller than the length of the coil units 230-1 to 230-4 of the second coil 230 in the optical axis direction.

For example, the depth of the seating portions 213A1 to 213A4 is from the first surface 30A of the upper surface 30 of the base 210 to the bottom surface (or the second surface 30B) of the seating portions 213A1 to 213A4. It could be distance. Alternatively, the depth of the seating portions 213A1 to 213A4 may be the first step between the first surface 30A and the second surface 30B.

The base 210 may include a first surface 30A and a third surface 30C having a second step in the optical axis direction. The third surface 30C may be disposed at a corner of the upper surface 30 of the base 210.

The third surface 30C may be disposed adjacent to the escape portion 212A of the base 210. For example, the second step may be the distance in the optical axis direction between the first surface 30A and the third surface 30C of the upper surface 30 of the base 210. For example, the second step may be smaller than the first step, but is not limited to this. In another embodiment, the second step may be equal to or larger than the first step.

The base 210 may further include a surface 31B (or a second step surface or a second side surface) connecting the third surface 30C and the first surface 30A.

For example, the second step surface 31B may be perpendicular to the first surface 30A, but is not limited thereto. In another embodiment, the second step surface 31B may be an inclined surface, and the first surface 30A ) and the second step surface 31B may be an obtuse angle or an acute angle. In another embodiment, the second step surface 31B may have a step shape, a curved shape, or a bent shape.

For example, each of the first surface 30A, the second surface 30B, and the third surface 30C may be a plane perpendicular to the optical axis. Also, for example, the first surface 30A, the second surface 30B, and the third surface 30C may be parallel to each other, but are not limited thereto. In another embodiment, at least one of the first to third surfaces may not be parallel to the other surfaces.

The base 210 may include a seating portion 214C on which the first position sensor is placed. The seating portion 214C may be a groove recessed from the upper surface 30 (eg, first surface 30A) of the base 210. For example, the seating portion 214C may be formed adjacent to one corner of the upper surface 30 of the base 210.

For example, the seating portion 214C may be formed on the upper surface of the base 210 located between the opening 28A of the base 210 and one escape portion 212A of the base 210.

For example, the seating portion 214C may be disposed between the seating portion 213A2 where the second coil unit 230-2 is disposed and the seating portion 213A4 where the fourth coil unit 230-4 is disposed. This is by separating the first position sensor 170 from the second coil units 230-1 to 230-4 as much as possible, so that the magnetic field generated from the second coil units 230-1 to 230-4 is moved to the first position. The influence on the sensor 170 can be reduced, thereby preventing the reliability of the first position sensor 170 from deteriorating.

The base 210 may be provided with a step 211 on which adhesive can be applied when fixing the cover member 300 by adhesive. At this time, the step 211 may be formed on the outer surface of the base 210, guides the side plate 302 of the cover member 300, and faces the lower end of the side plate 302 of the cover member 300. can see.

Additionally, a seating portion (not shown) where the filter 610 of the camera device 200 is installed may be formed on the lower surface of the base 210.

A guide protrusion 217 may be formed at the edge of the upper surface 30 of the base 210, protruding from the upper surface 30 of the base 210 (eg, first surface 30A). The guide protrusion 217 may guide the body 252 of the circuit board 250 and support the side surface of the body 252 to prevent the body 252 from coming out of the base 210.

Additionally, the base 210 may have a groove 49 to be coupled to the protrusion 48 of the circuit board 250. The groove 49 may be formed at a position corresponding to the protrusion 48 of the circuit board 250. For example, the groove 49 may be formed on the outer surface of the base 210. For example, the groove 49 may be formed on the guide protrusion 217 of the base 210.

The second coil 230 may be disposed below the circuit board 250. The second coil 230 may be disposed between the circuit board 250 and the base 210.

For example, the second coil 230 may be disposed between the lower surface of the circuit board 250 and the upper surface 30 of the base 210 (eg, second surface 30B).

The second coil 230 may correspond to, oppose, or overlap the magnet 130 disposed in the housing 140 in the optical axis direction.

The second coil 230 may include as many coil units as the number of magnets included in the magnet 130.

For example, the second coil 230 may include a plurality of coil units corresponding to a plurality of magnets.

When the magnet 130 includes four coil units, the second coil 230 may include four corresponding coil units. Alternatively, when the magnet 130 includes two coil units, the second coil 230 may include two corresponding coil units.

For example, the second coil 230 is connected to the first coil unit 230-1 that corresponds to, opposes, or overlaps the first magnet 130-1 in the optical axis direction, and to the second magnet 130-2 in the optical axis direction. A second coil unit 230-2 corresponding to, opposing, or overlapping the third magnet 130-3 in the optical axis direction, and a third coil unit 230-3 corresponding to, opposing, or overlapping the third magnet 130-3 in the optical axis direction. It may include a fourth coil unit 230-4 that corresponds to, faces, or overlaps the fourth magnet 130-4.

For example, four magnets 130-1 to 130-4 may be disposed on four sides of the housing 140, and the first to fourth coil units 230-1 to 230-3 are located along the optical axis. It may be disposed on four sides or four sides of the base 210 to correspond to or face the four magnets 130-1 to 130-4 in a direction.

In another embodiment, the four magnets may be disposed at four corner portions of the housing 140, and the first to fourth coil units may be located on the four magnets of the base 210 to correspond to or face the four magnets in the optical axis direction. It can also be placed in corners.

Each of the first to fourth coil units 230-1 to 230-5 may have a hollow or closed curve, for example, a ring shape, with a central hole 58 (see FIG. 14B), and the central hole 58 is located along the optical axis. It can be formed to face a direction.

Also, for example, each of the first to fourth coil units 230-1 to 230-4 may be in the form of a winding coil, coil bundle, coil body, or coil block rather than a fine pattern (FP) coil. For example, each of the first to fourth coil units 230-1 to 230-4 may be in the form of a strand in which a coating (insulator) is wrapped around a conductive wire.

FP coils require increasing the number of layers in which patterns are formed in order to increase the number of coil turns, but increasing the number of layers is costly. Additionally, because there are process limitations in increasing the size of the pattern coil, the resistance of the pattern coil increases even if the number of layers is increased. This makes it difficult for FP coils to secure a sufficient number of coil turns, which limits the number of coil turns. . Ultimately, the electromagnetic force of the FP coil due to interaction between the FP coil and the magnet 130 may be reduced or weakened due to limitations in the number of coil turns.

In a structure in which two support members are arranged at each corner of the housing 140 as in the embodiment, sufficient electromagnetic force is required to overcome the restoring force of the support members, but when using an FP coil, such sufficient electromagnetic force cannot be secured.

On the other hand, the winding coil has no restrictions on the number of coil turns and can have a number of turns 1.5 times or more than the number of turns of the FP coil. For example, under conditions of the same resistance, the winding coil can secure 1.5 times more turns than the FP coil.

For example, the number of turns of each of the first to fourth coil units 230-1 to 230-4 may be 40 or more. For example, the number of turns of each of the first to fourth coil units 230-1 to 230-4 may be 40 to 80. Or, for example, the number of turns of each of the first to fourth coil units 230-1 to 230-4 may be 45 to 60. Or, for example, the number of turns of each of the first to fourth coil units 230-1 to 230-4 may be 45 to 55.

For example, the number of turns of each of the first to fourth coil units 230-1 to 230-4 may be the same, but the number of turns is not limited thereto. In another embodiment, at least one of the first to fourth coil units 230-1 to 230-4 may have a different number of turns than at least one of the remaining coil units.

For example, the sum of the number of turns of the first coil unit (230-1) and the number of turns of the second coil unit (230-2) is the number of turns of the third coil unit (230-3) and the number of turns of the fourth coil unit (230-2). It may be equal to the sum of the number of turns in 4).

As described above, each of the first to fourth coil units 230-1 to 230-4 is implemented in the form of a winding coil, so the embodiment can secure a sufficient number of turns of the second coil 230 and OIS driving. Sufficient electromagnetic force to overcome the restoring force of the support members 220-1 to 220-4 can be secured.

Also, for example, the line width of each of the first to fourth coil units 230-1 to 230-4 may be 55 micrometers to 70 micrometers. Alternatively, the line width of each of the first to fourth coil units 230-1 to 230-4 may be 60 micrometers to 65 micrometers. Or, for example, the line width of each of the first to fourth coil units 230-1 to 230-4 may be 60 micrometers to 63 micrometers.

For example, the first coil unit 230-1 and the second coil unit 230-2 may be arranged to face each other in the direction from the first magnet 130-1 to the second magnet 130-2. .

Additionally, the third coil unit 230-3 and the fourth coil unit 230-4 may be arranged to face each other in the direction from the third magnet 130-3 to the fourth magnet 130-4.

Also, for example, in the direction from the first magnet 130-1 to the second magnet 130-2, the first coil unit 230-1 and the second coil unit 230-2 each have third and fourth magnets. It may not overlap with the coil units 230-3 and 230-4.

For example, the first coil unit 230-1 may be placed, seated, or coupled to the first seating portion 213A1 of the base 210, and the second coil unit 230-2 may be attached to the first seating portion 213A1 of the base 210. It may be placed, seated, or coupled to the second seating portion 213A2, and the third coil unit 230-3 may be placed, seated, or coupled to the third seating portion 213A3 of the base 210. , the fourth coil unit 230-4 may be placed, seated, or coupled to the fourth seating portion 213A4 of the base 210.

For example, at least a portion of the second coil 230 may be disposed between the protruding portions 15-1 to 15-4B and the seating portions 213A1 to 213A4.

The first protrusion 15-1 may be coupled to, inserted into, or disposed in the hollow (or central hole) of the first coil unit 230-1. The second protrusion 15-2 may be coupled to, inserted into, or disposed in the hollow (or central hole) of the second coil unit 230-2. The third protrusion 15-3 may be coupled to, inserted into, or disposed in the hollow (or central hole) of the third coil unit 230-3. The fourth protrusion 15-4 may be coupled to, inserted into, or disposed in the hollow (or central hole) of the fourth coil unit 230-4.

For example, the height of the protrusions 15-1 to 15-4 may be lower than or equal to the height of the upper surface or top of the second coil 230 (or coil units 230-1 to 230-4).

For example, the height of the protrusions 15-1 to 15-4 may be less than or equal to the length of the coil units 230-1 to 230-4 in the optical axis direction. For example, the height of the protrusions 15-1 to 215-4 may be the length of the protrusions 15-1 to 15-4 in the optical axis direction.

For example, the upper surfaces of the protrusions 15-1 to 15-4 may be lower than or equal to the first surface 30A of the upper surface 30 of the base 210. This means that if the height of the protrusions 15-1 to 15-3 is higher than the first surface 30A of the upper surface 30 of the base 210, the lower surface of the circuit board 250 and the upper surface 30 of the base 210 This is because the first surface 30A may be lifted or separated.

The first to fourth coil units 230-1 to 230-4 may be fixed or attached to the lower surface of the circuit board 250.

Referring to FIG. 15A , for example, the first coil unit 230-1 may be disposed adjacent to the first side of the lower surface of the circuit board 250 or the first side of the circuit board 250. The second coil unit 230-2 may be disposed adjacent to the second side of the lower surface of the circuit board 250 or the second side of the circuit board 250. The third coil unit 230-3 may be disposed adjacent to the third side of the lower surface of the circuit board 250 or the third side of the circuit board 250. The fourth coil unit 230-4 may be disposed adjacent to the fourth side of the lower surface of the circuit board 250 or the fourth side of the circuit board 250.

For example, the first side (or first side) and the second side (or second side) of the bottom of the circuit board 250 may be located on opposite sides, and the third side of the bottom of the circuit board 250 ( Alternatively, the third side) and the fourth side (or fourth side) may be located between the first side (or first side) and the second side (or second side), and may be located on opposite sides of each other.

For example, the first coil unit 230-1 may be disposed in the first area between the first side (or first side) of the lower surface of the circuit board 250 and the opening 24A of the circuit board 250, , the second coil unit 230-2 may be disposed in the second area between the second side (or second side) of the lower surface of the circuit board 250 and the opening 24A of the circuit board 250, The third coil unit 230-3 may be disposed in a third area between the third side (or third side) of the lower surface of the circuit board 250 and the opening 24A of the circuit board 250. The four coil units 230 - 4 may be disposed in the fourth area between the fourth side (or fourth side) of the lower surface of the circuit board 250 and the opening 24A of the circuit board 250 .

For example, the first coil unit 230-1 may be arranged parallel to the first side (or first side) of the lower surface of the circuit board 250, and the second coil unit 230-2 may be disposed on the circuit board ( It may be disposed parallel to the second side (or second side) of the lower surface of the circuit board 250, and the third coil unit 230-3 is connected to the third side (or third side) of the lower surface of the circuit board 250. They may be arranged in parallel, and the fourth coil unit 230-4 may be arranged in parallel with the fourth side (or fourth side) of the lower surface of the circuit board 250.

The circuit board 250 may include pads R1 to R8 to be electrically connected to the first to fourth coil units 230-1 to 230-4. In FIG. 15A , the pads R1 to R8 may be disposed on the lower surface of the circuit board 250 , and in FIG. 15B the pads R11 to R18 may be disposed on the upper surface of the circuit board 250 - 2 .

The lens driving device 100 may further include a second position sensor 240 for OIS feedback driving. The second position sensor 240 may include a first sensor 240A and a second sensor 240B.

The first sensor 240A and the second sensor 240B may be disposed between the circuit board 250 and the base 210. For example, the first sensor 240A and the second sensor 240B may be disposed between the lower surface of the circuit board 250 and the upper surface 30 of the base 210. Each of the first sensor 240A and the second sensor 240B may be electrically connected to the circuit board 250.

Each of the first sensor 240A and the second sensor 240B may include a Hall sensor, and any sensor that can detect the magnetic field strength can be used. For example, each of the first and second sensors 240A and 240B may be implemented as a position detection sensor such as a Hall sensor or may be implemented as a driver IC including a Hall sensor.

For example, the first sensor 240A may be placed in the first seating part 213A1 of the base 210, and the second sensor 240A may be placed in the third seating part 213A3 of the base 210. there is.

For example, a separation space 214A may be formed between the first protrusion 16A and the second protrusion 16B located in the first seating portion 213A1, and the first sensor 240A may be formed in the first seating portion (213A1). It may be disposed between the first protrusion 16A and the second protrusion 16B located within 213A1).

Also, for example, a separation space 214B may be formed between the first protrusion 16A and the second protrusion 16B located within the third seating portion 213A3, and the second sensor 240B may be formed on the third seating portion 213A3. It may be disposed between the first protrusion 16A and the second protrusion 16B located within 213A3.

In another embodiment, the first sensor 240A may be placed in a groove separately formed in the base 210 and spaced apart from the first seating part, and the second sensor may be spaced apart from the second seating part and placed separately in the base 210. It may also be placed in the formed groove.

For example, the first sensor 240A may be placed in the central hole 58 of the first coil unit 230-1, and the second sensor 240B may be disposed in the central hole 58 of the third coil unit 230-3 ( 58).

Referring to FIG. 14B, each of the first to fourth coil units 230-1 to 230-4 includes two straight sections 56A to 59A, 56B to 59B, and two straight sections 56A to 59A and 56B. It may include a first curved portion (56C to 59C) connecting one end of 59B), and a second curved portion (56D to 59D) connecting other ends of the two straight portions (56A to 59A, 56B to 59B). You can.

For example, the first sensor 240A may be disposed adjacent to one of the first and second curved parts 56C and 56D (eg, 56C) of the first coil unit 230-1. For example, the first sensor 240A may be disposed closer to the first curved portion 57C than to the second curved portion 57D.

For example, the second sensor 240B may be disposed adjacent to one of the first and second curved parts 58C and 58D (eg, 58C) of the third coil unit 230-3. For example, the second sensor 240B may be disposed closer to the first curved portion 58C than to the second curved portion 58D.

For example, the first curved portion 56C of the first coil unit 230-1 is larger than the second curved portion 58D of the third coil unit 230-3. It may be located closer to the curved portion 58C.

In addition, the first curved portion 58C of the third coil unit 230-3 is larger than the second curved portion 56D of the first coil unit 230-1. It may be located closer to section 56C. In addition, the first curved portion 57C of the second coil unit 230-2 is larger than the first curved portion 58C of the third coil unit 230-3. It may be located closer to section 58D. Additionally, the second curved portion 57D of the second coil unit 230-2 is larger than the first curved portion 59C of the fourth coil unit 230-4. It may be located closer to section 59D. In addition, the first curved portion 59C of the fourth coil unit 230-4 is more curved than the first curved portion 56C of the first coil unit 230-1. It may be located closer to section 56D.

The first separation distance d1 between the first coil unit 230-1 and the third coil unit 230-3 is the distance between the first coil unit 230-1 and the fourth coil unit 230-4. It may be different from the second separation distance (d2).

The first separation distance d1 between the two adjacent curved parts of the first coil unit 230-1 and the third coil unit 230-3 is the first coil unit 230-1 and the fourth coil unit It may be different from the second separation distance d2 between two adjacent curved parts of (230-4). In another embodiment, the first separation distance and the second separation distance may be the same.

The third separation distance d3 between the two adjacent curved parts of the second coil unit 230-2 and the third coil unit 230-3 is the second coil unit 230-2 and the fourth coil unit It may be different from the fourth separation distance d4 between two adjacent curved parts of (230-4). In another embodiment, the third separation distance and the fourth separation distance may be the same. For example, each of the first to fourth distances d1 to d4 may be the shortest distance.

For example, the second distance d2 may be smaller than the first distance d1, and the third distance d3 may be smaller than the fourth distance d4.

Also, for example, the first distance d1 may be the same as the fourth distance d4, and the second distance d2 and the third distance d3 may be the same.

17 and 18, when viewed from above, the first magnet 130-1 may be located inside the area of the first coil unit 230-1, and the first coil unit 230 in the optical axis direction. -1) may overlap.

When viewed from above, the second magnet 130-2 may be located inside the area of the second coil unit 230-2 and may overlap the second coil unit 230-2 in the optical axis direction. When viewed from above, the third magnet 130-3 may be located inside the area of the third coil unit 230-3 and may overlap the third coil unit 230-3 in the optical axis direction. When viewed from above, the fourth magnet 130-4 may be located inside the area of the fourth coil unit 230-4 and may overlap the fourth coil unit 230-4 in the optical axis direction.

The first to fourth magnets 130-1 to 130-4 may have the same length L1, but are not limited thereto. In another embodiment, the first to fourth magnets 130-1 to 130-4 may have the same length L1. 130-4), at least two of them may have different lengths.

The first to fourth magnets 130-1 to 130-4 may have the same width W1, but are not limited thereto. In another embodiment, the first to fourth magnets 130-1 to 130-4 may have the same width W1. 130-4), at least two of them may have different widths.

The first to fourth magnets 130-1 to 130-4 may have the same height H1, but are not limited thereto. In another embodiment, the first to fourth magnets 130-1 to 130-4 may have the same height H1. 130-4), at least two of them may have different heights.

The length L1 of each of the first to fourth magnets 130-1 to 130-4 may be the length of each of the magnets 130-1 to 130-4 in the longitudinal direction. Additionally, the width W1 of each of the first to fourth magnets 130-1 to 130-4 may be the length of each of the magnets 130-1 to 130-4 in the width direction. Here, the width direction may be perpendicular to the length direction, and in each configuration (130-1 to 130-4), the width may be shorter than the length. Additionally, the width of each component (130-1 to 130-4) may be expressed by replacing it with the “thickness” of each component (130-1 to 130-4).

For example, the length L1 of each of the first to fourth magnets 130-1 to 130-4 is the length of each of the first to fourth magnets 130-1 to 130-4 facing the bobbin 110. It may be the horizontal length of the first side. Also, for example, the width W1 of each of the first to fourth magnets 130-1 to 130-4 is the width W1 on the first side of each component 130-1 to 130-4 facing the bobbin 110. It may be the distance to the second side, which is the opposite side of the first side. Also, for example, the height H1 of each of the first to fourth magnets 130-1 to 130-4 may be the length of each configuration in the optical axis direction.

The first to fourth coil units 230-1 to 230-4 may have the same length M1, but are not limited thereto. In another embodiment, the first to fourth coil units 230-4 may have the same length M1. At least two of 1 to 230-4) may have different lengths.

The first to fourth coil units 230-1 to 230-4 may have the same width K1, but are not limited thereto. In another embodiment, the first to fourth coil units 230-4 may have the same width K1. At least two of 1 to 230-4) may have different widths.

The first to fourth coil units 230-1 to 230-4 may have the same height T1, but are not limited thereto. In another embodiment, the first to fourth coil units 230-4 may have the same height T1. At least two of 1 to 230-4) may have different heights.

The length M1 of each of the first to fourth coil units 230-1 to 230-4 is in the corresponding longitudinal direction or one of the first to fourth magnets 130-1 to 130-4. It may be a length in a parallel direction. In addition, the width K1 of each of the first to fourth coil units 230-1 to 230-4 is in the corresponding width direction or It may be a length in a direction parallel to this. The height T1 of each of the first to fourth coil units 230-1 to 230-4 may be a length in the optical axis direction.

The length L1 in the longitudinal direction of each of the first to fourth magnets 130-1 to 130-4 is the corresponding length of any one of the first to fourth coil units 230-1 to 230-4. It may be smaller than the direction length (M1) (L1<M1).

The length W1 in the width direction of each of the first to fourth magnets 130-1 to 130-4 is the width of any one of the first to fourth coil units 230-1 to 230-4. It may be smaller than the direction length (K1) (W1<K1).

For example, each of the first to fourth magnets 130-1 to 130-4 may include a portion whose length decreases from the second surface to the first surface. Also, for example, each of the first to fourth magnets 130-1 to 130-4 may include a portion whose width decreases from one end to the other end. For example, the magnets 130-1 to 130-4 may include a tapered portion.

In addition, the separation distances in the optical axis direction between the magnets 130-1 to 130-4 and the coil units 230-1 to 230-4 may be the same, but are not limited thereto, and in another embodiment, the At least two of the separation distances may be different.

The first sensor 240A may be arranged to face or overlap the first magnet 130-1 in the optical axis direction. For example, the first sensor 240A may not overlap the second coil 230, for example, the first coil unit 230-1, in the optical axis direction.

The second sensor 240B may be arranged to face or overlap the third magnet 130-3 in the optical axis direction. For example, the second sensor 240B may not overlap the second coil 230, for example, the third coil unit 230-3.

The first sensor 240A and the second sensor 240B may be coupled or attached to the lower surface of the circuit board 250 using solder or a conductive adhesive member. For example, the first sensor 240A and the second sensor 240Bb may be electrically connected to the circuit board 250. For example, the first sensor 240A and the second sensor 240B may be electrically connected to terminals 251 of the circuit board 250.

For example, a driving signal may be provided to each of the first sensor 240A and the second sensor 240A through the terminals 251 of the circuit board 250, and the terminals 251 of the circuit board 250 may be provided. Through this, the first output of the first sensor 240A and the second output of the second sensor 240B may be output.

The control unit 830 of the camera device 200 or the control unit 780 of the portable terminal 200A uses the first output of the first sensor 240A and the second output of the second sensor 240B to change the displacement of the OIS moving unit. can be sensed or detected.

For example, the first sensor 240A may detect the strength of the magnetic field of the first magnet 130-1 and output a first output, and the second sensor 240B may detect the magnetic field of the third magnet 130-3. The intensity of can be detected and a second output can be output.

The first sensor 240A and the second sensor 240B may detect the displacement of the OIS moving unit in a direction perpendicular to the optical axis OA. For example, the OIS moving unit may include a housing 140. Or, for example, the OIS moving unit may include the AF moving unit and components mounted on the housing 140.

For example, the “OIS moving unit” may include an AF moving unit and the housing 140, and may further include first to fourth magnets 130-1 to 130-4 depending on the embodiment.

OIS moving unit (e.g., housing 140) by interaction between the first to fourth magnets 130-1 to 130-4 and the first to fourth coil units 230-1 to 230-4. It may move in a direction perpendicular to the optical axis, for example, in the x-axis and/or y-axis direction, and thereby camera shake correction may be performed.

Base 210 may include sides and corners (or corners). For example, base 210 may include four sides and four corners. The four seating portions 213A1 to 213A4 described above may be provided on the four sides of the base 210.

The corner portions of the base 210 may correspond to or oppose the corner portions 142-1 to 142-4 of the housing 140 in the optical axis direction.

The above-described escape portion 212A may be formed at the corners of the base 210, and the third surface 30C may be formed. For example, the third surface 30C and the second step surface 31B of the base 210 may form a “step portion” on which the terminal portion 27 is disposed.

For example, in order to avoid spatial interference with the coupling or bonded portion between the support members 220-1 to 220-4 and the terminal portion 27, the escape portion 212A may be in the form of a groove or groove. The width and diameter of the groove of the escape portion 212A or the distance between opposing inner surfaces of the groove may increase in a direction from the center of the base 210 toward the corner of the base 210, but are not limited thereto.

The groove of the escape portion 212A may penetrate the third surface 30C of the base 210, and the groove may have an opening that opens to the outer surface of the base 210.

The terminal portion 27 may be disposed on the third surface 30C of the base 210.

For example, the groove of the escape portion 212A may expose the solder 902 that joins the lower surface of the terminal portion 27 and the support member 220 from the lower surface of the base 210.

In order to avoid spatial interference between the solder 902 (see FIG. 22) and the base 210, the groove of the escape portion 212A is aligned with the coupling portions 81 and 82 of the terminal portion 27 and the solder 902 in the optical axis direction. may overlap with .

The first position sensor 170 may be disposed between the base 210 and the circuit board 250. For example, the first position sensor 170 may be disposed between the upper surface of the base 210 and the lower surface of the circuit board 250. For example, the first position sensor 170 may be disposed between the first surface 30A of the upper surface 30 of the base 210 and the lower surface of the circuit board 250.

The first position sensor 170 may be mounted, connected, or coupled to the bottom of the circuit board 250. For example, the first position sensor 170 may be disposed within the seating portion 214C of the base 210.

The first position sensor 170 may be electrically connected to the circuit board 250. For example, the first position sensor 170 may be electrically connected to the terminals 251 of the circuit board 250.

For example, at least a portion of the first position sensor 170 may correspond to, face, or overlap the sensing magnet 180 in the optical axis direction, and may not overlap the magnet 130. Also, for example, the first position sensor 170 may not overlap the second coil 230 in the optical axis direction.

Referring to FIG. 13 , for example, the first position sensor 170 may be disposed on the upper surface of the base 210 located between the second coil unit 230 and the fourth coil unit 230-4. This is because the fourth separation distance d4 between the second coil unit 230-2 and the fourth coil unit 230-4 is greater than the second separation distance and the third separation distance, the first position sensor 170 This is because it is less affected by the magnetic field generated by the second coil unit 230 and the magnetic field generated by the fourth coil unit 230-4.

For example, the separation distance between the first position sensor 170 and the second coil unit 230-2 may be the same as the separation distance between the first position sensor 170 and the fourth coil unit 230-4. The separation distance at this time may be the shortest separation distance. For example, the separation distance between the first position sensor 170 and the second curved portion 57D of the second coil unit 230-2 is the distance between the first position sensor 170 and the fourth coil unit 230-4. It may be the same as the separation distance between the two curved portions (59D). The separation distance at this time may be the shortest separation distance.

This is to reduce the influence of the magnetic field generated by the first position sensor 170 from the second coil unit 230-2 and the fourth coil unit 230-4. In other embodiments, the two may be different.

By the interaction between the first coil 120 and the magnet 130, the bobbin 110 and the sensing magnet 180 can be moved in the optical axis direction, and the first position sensor 170 can detect the magnetic field of the sensing magnet 180. The intensity can be detected, and an output signal can be output according to the detected result. That is, the first position sensor 170 may serve to detect the displacement of the AF moving unit (eg, bobbin 110) in the optical axis direction.

The first position sensor 170 may be implemented solely as a position detection sensor such as a Hall sensor, or may be implemented in the form of a driver IC (Integrated Circuit) including a Hall sensor.

When the first position sensor 170 is implemented as a Hall sensor alone, the first position sensor 170 may include two input terminals and two output terminals that are electrically connected to the circuit board 250. The first position sensor 170 may receive a driving signal from the circuit board 250, and the output of the first position sensor 170 may be transmitted to the circuit board 250.

When the first position sensor 170 is a driver IC including a Hall sensor, one terminal for a clock signal, one terminal for a data signal, two terminals for a power signal, and the first coil 120 It may include two terminals for providing a driving signal, and these six terminals may be electrically connected to the circuit board 250. When each of the first sensor 240A and the second sensor 240B is a driver IC including a Hall sensor, the description of the first position sensor 170 implemented in the form of a driver IC described above may be applied or applied mutatis mutandis.

FIG. 19 is a diagram illustrating the relationship between the stroke range in a direction perpendicular to the optical axis of the OIS moving unit, the size of the sensing magnet 180, and the arrangement of the first position sensor 170 according to an embodiment.

310 may be a sensing element or sensing area of the first position sensor 170 that senses the strength of the magnetic field of the sensing magnet 180. 320 may be the stroke range of the OIS moving part. 330 may be an area where the sensing magnet 180 is placed and is shown as a square in FIG. 19, but is not limited thereto and may be shown as a circle, polygon, or oval depending on the shape of the sensing magnet 180.

Referring to FIG. 19, in order to improve the sensitivity of the first position sensor 170, the sensing element 310 of the first position sensor 170 may overlap with the sensing magnet 180 in the optical axis direction. . For example, FIG. 19 may be an arrangement of the sensing magnet 180 and the first position sensor 170 at the initial position of the OIS moving unit.

At the initial position of the OIS moving unit, the sensing element 310 of the first position sensor 170 may overlap with the sensing magnet 180 in the optical axis direction.

For example, at the initial position of the OIS moving unit, the sensing element 310 of the first position sensor 170 overlaps the center 301 or the central area of the sensing magnet 180 in the optical axis direction, or overlaps the center 301 of the sensing magnet 180. ), but is not limited to this.

The first position sensor 170 is placed on the fixed part (e.g., the circuit board 250 and the base 210), and the sensing magnet 180 is placed on the OIS moving part, so that the OIS moving part is aligned with the optical axis with respect to the fixed part. When moving in a vertical direction, the alignment or relative positional relationship in the optical axis direction between the sensing magnet 180 and the first position sensor 170 may change, which may result in a decrease in the sensitivity of the first position sensor 170 or a change in the first position sensor 170. This may affect the sensitivity of the position sensor 170.

The stroke range 320 of the OIS moving part in the direction perpendicular to the optical axis may overlap with the sensing magnet 180 in the optical axis direction, and as a result, the first position sensor ( 170) can prevent the sensitivity from decreasing.

For example, the stroke range 320 of the OIS moving part may be a circle with the maximum stroke of the OIS moving part as its radius. The maximum stroke of the OIS moving part may be the maximum stroke of the OIS moving part in any direction perpendicular to the optical axis (eg, +X-axis direction or +Y-axis direction) from the initial position of the OIS moving part.

That is, even if the OIS moving unit moves in a direction perpendicular to the optical axis, the first position sensor 170 and the sensing magnet 180 can maintain at least a portion of the overlap in the optical axis direction. For example, within the movement range or total displacement in the direction perpendicular to the optical axis of the OIS moving unit, the sensing element of the first position sensor 170 and the sensing magnet 180 may maintain an overlap in the optical axis direction.

Additionally, the sensing magnet 180 may have a size that can cover the stroke range 320 of the OIS moving part.

For example, the cross-sectional area of the sensing magnet 180 in a direction perpendicular to the optical axis may be larger than the area of the stroke range 320 of the OIS moving part. In another embodiment, the cross-sectional area of the sensing magnet 180 in a direction perpendicular to the optical axis may be the same as the stroke range of the OIS moving part.

Due to the influence of gravity, the OIS moving part may deflect (or move) in the direction of gravity, and the resolution of the camera module may deteriorate due to this deflection (or movement). As the weight of the OIS moving part increases due to an increase in the size of the lens, the deflection of the OIS moving part in the direction of gravity due to the influence of gravity may increase, and the resulting reduction in resolution may become worse.

In the embodiment, since the first position sensor 170 is disposed on the fixed part, the movement (or deflection) of the AF moving part due to the movement (or deflection) of the OIS moving part due to the influence of gravity can be automatically compensated or corrected. there is.

In another embodiment, the first position sensor 170 may not be placed on the base 210 but may be placed on the housing 140 in response to the sensing magnet 180.

In another embodiment, the sensing magnet may be placed in the housing, and the first position sensor may be placed in the bobbin 110.

A magnetic field may be generated in the second coil 230 to which a driving signal is provided for OIS driving. In order to increase the accuracy of the first position sensor 170, it is better to space the first position sensor 170 away from the second coil 230 so as to be less affected by the magnetic field of the second coil 230.

In the embodiment, in order to reduce the influence of the magnetic field of the second coil 230, the first position sensor 170 is located in the base 210 where the first to fourth coil units 230-1 to 230-4 are not disposed. It may be placed in one area of the upper surface, and the first position sensor 170 may not overlap the second coil 230 in the optical axis direction.

The terminal unit 27 may be placed on the base 210. The terminal portion 27 may be coupled or connected to the other end of the support member 220. The terminal portion 27 may be electrically connected to the support member 220 and the circuit board 250. The terminal portion 27 may electrically connect the support member 220 and the circuit board 250.

In another embodiment, the terminal portion 27 may be omitted, and the support member 220 may be directly coupled or connected to the circuit board 250. For example, in another embodiment, the support member 220 may be coupled to the lower or upper surface of the circuit board 250 using solder or a conductive adhesive member, and may be electrically connected to the circuit board 250.

The terminal unit 27 may be arranged to be spaced apart from the first surface 30A of the upper surface 30 of the base 210 on which the circuit board 250 is disposed. For example, the area of the terminal portion 27 coupled to the support member 220 may be located below the upper surface 30 of the base 210.

The terminal portion 27 may be located between the first surface 30A and the third surface 30C of the upper surface of the base 210.

For example, the upper surface of the terminal portion 27 coupled to the support member 220 may be higher than the lower surface of the base 210 and lower than the first surface 30A of the upper surface 30 of the base 210. For example, the upper surface of the terminal unit 27 may be located higher than the third surface 30C of the upper surface of the base 210 and lower than the first surface 30A of the upper surface 30 of the base 210.

For example, the lower surface of the terminal portion 27 may be located higher than the lower surface of the base 210 and lower than the first surface 30A of the upper surface 30 of the base 210. For example, the lower surface of the terminal portion 27 may be located higher than the third surface 30C of the upper surface of the base 210 and lower than the first surface 30A of the upper surface 30 of the base 210.

Referring to FIG. 16D, for example, the lower surface of the body 50A of the terminal portion 27 may be positioned lower than the lower surface of the coil unit (eg, 230-1) of the second coil 230. For example, the upper surface of the body 50A of the terminal portion 27 may be located lower than the lower surface of the coil unit (eg, 230-1) of the second coil 230. For example, the lower surfaces of each of the coil units 230-1 to 230-4 may be positioned at the same height.

In another embodiment, for example, the lower surface (or upper surface) of the body 50A of the terminal portion 27 may be located on the same plane as the lower surface of the coil unit (eg, 230-1) of the second coil 230.

In another embodiment, for example, the lower surface (or upper surface) of the body 50A of the terminal portion 27 may be positioned higher than the lower surface of the coil unit (eg, 230-2) of the second coil 230.

The terminal portion 27 may include at least one terminal coupled to a support member (eg, 220-1 to 220-4). For example, the terminal portion 27 may include a plurality of terminals 27A1 to 27A4.

Referring to FIG. 10, the terminal portion 27 may include support members 220-1 to 220-4 and corresponding terminals 27A1 to 27A4.

The terminal portion 27 of the embodiment of FIG. 10 may include four terminals 27A1 to 27A4. Two terminals (27A1, 27A2) of the four terminals (27A1 to 27A4) may be connected to each other, and the other two terminals (27A3, 27A4) of the four terminals (27A1 to 27A4) may be connected to each other. . In other embodiments, at least two terminals selected from among four terminals may be connected.

For example, the terminal portion 27 includes a first connection portion 7A connecting the first and second terminals 27A1 and 27A2 and a second connection portion 7B connecting the third and fourth terminals 27A3 and 27A4. may include. Also, for example, the first and second terminals 27A1 and 27A2 may be spaced apart from the third and fourth terminals 27A3 and 27A4 and may be electrically independent or separated from each other.

In the embodiment of Figure 10, since the terminal portion 27 serves to electrically connect the first coil 120 and the circuit board 250, the terminal portion 27 is divided into two, but is not limited to this. In another embodiment, the terminal portion 27 may be an integrated type in which four terminals 27A1 to 27A4 are connected to each other. In another embodiment, the terminal portion 27 may be divided into three or more pieces.

Hereinafter, the description of the first terminal 27A1 may be applied or applied mutatis mutandis to the second to third terminals 27A2 to 27A3. Referring to FIG. 10, the first terminal 27A may include a body 50A1 coupled to the support member 220-1 and an extension portion 50B1 extending from the body 50A1. One end of the extension portion 50B1 may be electrically connected to the circuit board 250.

In Figure 10, the first terminal 27A1 and the third terminal 27A3 include the extension portion 50B1, and the second terminal 27A2 and the fourth terminal 27A4 do not include the extension portion 50B1. It is not limited to this. In another embodiment, at least one of the terminals of the terminal portion 27 may include an extension portion electrically connected to the circuit board 250.

For example, one end of the extension portion 50B1 of the first terminal 27A1 may be electrically connected to the first pad A1 of the circuit board 250 by solder or a conductive adhesive member. Additionally, for example, the extension portion 50B1 of the third terminal 27A3 may be electrically connected to the second pad A2 of the circuit board 250 using solder or a conductive adhesive member.

The body 50A1 may be disposed on the third surface 30C of the base 210. The body 50A1 may be positioned lower than the circuit board 250. For example, the upper surface of the body 50A1 may be located lower than the lower surface of the circuit board 250.

Figure 22 shows the coupling of the first support member 220-1 and the first terminal 27A1 by solder 902 and the step between the circuit board 250 and the body 50A1 of the first terminal 27A1. The description of FIG. 22 may also be applied or applied to the second to fourth support members 220-2 to 220-4 and the second to fourth terminals 27A2 to 27A4.

Referring to FIG. 22 , the upper surface of the body 50A1 coupled to the support member 220-1 may be positioned below the lower surface of the circuit board 250. Because of this, for example, a step H2 may exist in the optical axis direction between the lower surface of the circuit board 250 and the upper surface of the body 50A1 of the first terminal 27A. The step H2 may be a height difference between the lower surface of the circuit board 250 and the upper surface of the body 50A1 in the optical axis direction.

Compared to other embodiments in which the support member is directly coupled to the circuit board by solder, etc., in the embodiment of FIG. 22, the length of the first support member 220-1 in the optical axis direction can be increased due to the step H2. there is. As the length of the first support member 220-1 increases, the resistance of the first support member 220-1 may increase, and the intensity of the current flowing through the first support member 220-1 may decrease. there is. As a result, the embodiment can reduce power consumption and prevent a decrease in OIS drive reliability due to a decrease in OIS wire diameter to reduce power consumption.

The body 50A1 may include coupling regions 81A and 82A for being coupled to the support member 220-1, and first holes 81B and 82B formed in the coupling regions 81A and 82A. The joining areas 81A and 82A may be an area of the body 50A1 where the support member 220-1 and the solder 902 are connected.

The first holes 81B and 82B may be through holes. The other end of the support member 220-1 passes through the first holes 81B and 82B, and the other end of the support member 220-1 passing through the first holes 81B and 82B is solder 902 or a conductive adhesive. It may be coupled to the lower or lower surfaces of the coupling areas 81A and 82A.

The diameter R11 of the first holes 81B and 82B may be larger than the diameter of the support member 220-1.

For example, the diameter (or thickness) of the 1-1 support member 20A may be 40 micrometers to 100 micrometers. Or, for example, the diameter (or thickness) of the 1-1 support member 20A may be 50 micrometers to 70 micrometers. Or, for example, the diameter (or thickness) of the 1-1 support member 20A may be 50 micrometers to 60 micrometers.

The diameter R11 of the first holes 81B and 82B may be 0.15 [mm] to 0.3 [mm]. Or, for example, the diameter R11 of the first holes 81B and 82B may be 0.2 [mm] to 0.25 [mm]. Or, for example, the diameter R11 of the first holes 81B and 82B may be 0.15 [mm] to 0.2 [mm].

In FIG. 10, the shape of the coupling areas 81A and 81B may be circular, but is not limited thereto, and may be elliptical or polygonal (eg, triangle or square) in other embodiments.

The diameter R12 of the coupling areas 81A and 81B may be larger than the diameter R11 of the first holes 81B and 82B. For example, the bonding regions 81A and 81B may have an area or diameter sufficient to ensure good bonding between the solder 902 and the support member 220-1.

Additionally, the body 50A1 may include at least one second hole 81D or 82D formed around the coupling area 81A or 82A. For example, the body 50A1 may include at least one second hole 81D and 82D formed to surround the coupling areas 81A and 82A.

For example, the body 50A1 may include a plurality of second holes 81D and 82D formed to surround the coupling areas 81A and 82A, and the plurality of second holes 81D and 82D may be spaced apart from each other. .

Additionally, the plurality of second holes 81D and 82D may be spaced apart from the first holes 81B and 82B.

At least one second hole (81D, 82D) serves to ensure that the solder is mainly formed only in the joining areas (81A, 82A) due to interfacial tension (e.g., surface tension) at the edges of the joining areas (81A, 82A) during soldering. can do.

In addition, for soldering, the joining areas (81A, 82A) must be heated, and the heat of the joining areas (81A, 82A) is transferred to other areas of the body (50A1) by at least one second hole (81D, 82D). It can be suppressed or blocked, thereby preventing solder from being formed in other areas of the body 50A1. Ultimately, at least one second hole (81D, 82D) can improve the solderability of the solder (902; 64A, 64B).

Additionally, the body 50A1 is located between the plurality of second holes 81D and 82D and may include support portions 81C and 82C that support the coupling regions 81A and 81B. The support portions 81C and 82C may alternatively be expressed as a “connection portion” or a “bridge.”

For example, the supports 81C and 82C may include a plurality of supports spaced apart from each other.

For example, the coupling portion of the first terminal 27A1 is a first coupling portion 81 coupled to the 1-1 support member 20A of the first support member 220-1, and the 1-2 support member 20B. ) may include a second coupling portion 82 coupled to the.

Each of the first and second coupling portions 81 and 82 may include the aforementioned coupling regions 81A and 82A and the first holes 81B and 82B. Additionally, each of the first and second coupling portions 81 and 82 may include the plurality of second holes 81D and 82D and the support portions 81C and 82C described above.

For example, the extension portion 50B1 may protrude from the upper surface of the body 50A1 toward the circuit board 250. For example, the extension portion 50B1 may protrude from the upper surface of the body 50A1 in the optical axis direction or upward.

One end of the extension part 50B1 may be connected to the body 50A1, and the other end of the extension part 50B1 may be connected to the pad A1 of the circuit board 250.

Referring to FIGS. 11A and 11B , the circuit board 250 may include at least one pad (eg, A1 or A2), and the at least one pad (A1 or A2) may be disposed on the top surface of the circuit board 250. can be placed. For example, the pad A1 or A2 may be disposed on the upper surface of the body 252 of the circuit board 250 adjacent to the terminal portion 253 of the circuit board 250.

The extension portion 50B1 of the terminal 27A1 or 27A3 and the pad A1 or A3 of the circuit board 250 may be coupled to each other using solder 904 or a conductive adhesive and may be electrically connected.

The extension portion 50B1 may include at least one bent or curved portion.

For example, the extension portion 50B1 may include a first portion disposed on the second step surface 31B of the base 210. The extension portion 50B1 may include a portion that is bent or curved from the body 50A1 toward the circuit board 250, and may be connected or coupled to the pad A1 or A2 of the circuit board 250.

For example, the terminal (eg, 27A1) may be provided with a groove (11A) adjacent to the bent portion to facilitate bending of the extension portion (50B1).

In another embodiment, the extension may further include a second part connected to the first part of the extension and disposed on the upper surface of the circuit board 250, and the second part is connected to the pad (A1 or A2) and solder or conductive adhesive. It can be combined or connected. For example, the extension according to another embodiment may further include a bent portion formed between the first part and the second part.

Additionally, as shown in FIGS. 11A and 11B, a step may be formed between the outer surface of the side portion of the housing 140 and the outer surface of the corner portion. The reason for forming the step is to prevent it from being damaged by external impact by forming the step because the corner portion of the housing 140 is thin.

The first terminal 27A1 may be coupled or attached to the base 210 using an adhesive. For example, the body 50A1 may be coupled or attached to the third surface 30C of the upper surface 30 of the base 210 by an adhesive, and the extension portion 50B1 may be attached to the upper surface 30 of the base 210. It may be coupled or attached to the third surface 30C and the second step surface 31B.

In another embodiment, at least a portion of the terminal portion 27 may be inserted into or coupled to the base 210 using an insert injection method. For example, the terminal portion 27 may be insert-molded with the base 210, and at least a portion of the terminal portion 27 may be inserted into the base 210 or disposed inside the base 210.

For example, the third terminal 27A3 may have the same or similar structure as the first terminal 27A, and the description of the first terminal 27A1 may be applied or analogously applied to the third terminal 27A3. Additionally, each of the second and fourth terminals 27A2 and 27A4 may have a structure in which the extension portion 50B1 of the first terminal 27A is omitted, but the structure is not limited thereto.

In another embodiment, it may have the same shape or structure as the first terminal 27A1. That is, the second and fourth terminals 27A2 and 27A4 may also include an extension portion 50B1 of the first terminal 27A1, and in this case, the circuit board 250 may include the second and fourth terminals 27A2 and 27A4. ) may be provided with a pad that is coupled or electrically connected to each of the extension parts.

Figure 20 shows a terminal portion 27B according to another embodiment.

Referring to FIG. 20, the terminal portion 27B may include four terminals 27B1 to 27B4 spaced apart from each other. The terminal portion 27B is a modified example of the terminal portion 27 of FIG. 10, and the first and second connection portions 7A and 7B of FIG. 10 may be omitted in the terminal portion 27B.

The cover member 300 includes an OIS moving part, an upper elastic member 150, a lower elastic member 160, a second coil 230, a base 210, and a terminal portion 27 in a receiving space formed together with the base 210. ), the circuit board 250, the support member 220, and the second position sensor 240.

The cover member 300 may be in the form of a box with an open bottom and including a top plate 301 and side plates 302, and the lower part of the side plate 302 of the cover member 300 is a step of the base 210 ( 211) can be combined. The shape of the upper plate 301 of the cover member 300 may be polygonal, for example, square or octagonal.

An opening 303 may be formed in the upper plate 301 of the cover member 300 to expose the lens module 400 coupled to the bobbin 110 to external light. The material of the cover member 300 may be a non-magnetic material such as SUS to prevent sticking to the magnet 130. The cover member 300 may be formed of a metal plate, but is not limited thereto, and may be formed of a plastic or resin material. Additionally, the cover member 300 may be connected to the ground terminal of the circuit board 250 of the lens driving device 100 or/and the ground of the circuit board 800 of the camera device 200. The cover member 300 can block electromagnetic interference (EMI).

In the embodiment of FIGS. 12A and 12B, each of the two support members 20A and 20B of the first support member 220-1 may be implemented as a single wire, but the present invention is not limited thereto. For example, each of the two support members 20A and 20B of the first support member 220-1 may be a wire made of a conductive material.

Figure 23a shows a first support member 220-1A according to another embodiment. The description of the first support member 220-1A below also applies to the remaining second to fourth support members 220-2 to 220-4 and the corresponding terminals and upper elastic members of the terminal portion 27. Or it may be applied mutatis mutandis.

Referring to FIG. 23A, the first support member 220-1A includes a 1-1 support member 20A-1 made of a single wire and a 1-2 support member 20B1 made of a non-conductive material. may include.

The first support member 220-1A and the 1-2 support member 20B1 may be disposed in at least one of the corner portions 142-1 to 142-4 of the housing 140. For example, the first support member 220-1A and the 1-2 support member 20B1 may be disposed at each of the corner portions 142-1 to 142-4 of the housing 140.

For example, the 1-1 support member 20A-1 may have a different rigidity (or spring constant) from the 1-1 support member 20A (or the 1-2 support member 20B) of FIG. 12A. .

For example, the stiffness (or spring constant) of the 1-1 support member 20A-1 is the stiffness (or spring constant) of the 1-1 support member 20A (or 1-2 support member 20B) of FIG. 12A. constant).

For example, the diameter of the 1-1 support member 20A-1 may be smaller than or equal to the diameter of the 1-1 support member 20A (or the 1-2 support member 20B) of FIG. 12A. For example, the diameter range of the 1-1 support member 20A-1 may be the diameter range of the 1-1 support member 20A of FIG. 12A.

On the other hand, the 1-2 support member 20B1 formed of a non-conductive material has a different rigidity (or spring constant) from the 1-1 support member 20A (or 1-2 support member 20B) of FIG. 12A. ) can have.

For example, the stiffness (or spring constant) of the 1-2 support member 20B1 formed of a non-conductive material is the stiffness of the 1-1 support member 20A (or 1-2 support member 20B) of FIG. 12A. (or spring constant).

For example, the bobbin 110, the housing 140, and/or the base 210 may include an injection molded product, and in this case, the injection product may include at least one of resin, rubber, urethane, or plastic. .

The 1-2 support member 20B1 may also be made of an injection molded product and may be elastically deformed. For example, the first-second support member 20B1 may include at least one of resin, rubber, urethane, plastic, or thermoplastic elastomer.

The cross-section of the first-second support member 20B1 in the direction perpendicular to the optical axis may be circular, but is not limited thereto. In another embodiment, the cross-section of the first-second support member 20B1 in a direction perpendicular to the optical axis may be polygonal.

The 1-2 support member 20B1 is formed of the above-described injection-molded material and can function as a damper providing a buffering effect.

One end of the 1-2 support member 20B1 may be coupled or connected to the second coupling portion 72B of the first outer frame 152 of the first upper elastic member 150-1. For example, one end of the 1-2 support member 20B1 may be coupled to the second coupling portion 72B of the first outer frame 152 by adhesive.

The adhesive 350 is applied to the first end (A2, or “first fixing part”) of the 1-2 support member 20B1 and the first outer frame 152 of the first upper elastic member 150-1 corresponding thereto. ) can be placed between the second coupling portions 72B, and the two can be combined or attached.

For example, at least a portion of the adhesive 350 may be applied to the first end A2 (or “first fixing portion”) of the first-2 support member 20B1 and the first outer frame of the first upper elastic member 150-1. It can be placed on the second coupling portion 72B of 152, and the two can be coupled.

For example, the adhesive 350 may be resin (eg, epoxy) or silicone, but is not limited thereto.

The other end of the 1-2 support member 20B1 may be coupled to the first terminal 27A1.

The first terminal 27C1 is a modified example of the first terminal 27A1 of FIG. 12A, and the body 50A2 of the first terminal 27C1 has a third hole connected to or in communication with the second coupling portion 82. 53A) may further be included. For example, a portion of the third hole 53A may be formed in the coupling area 82A of the second coupling portion 82 and may be connected or communicated with the first hole 82B of the body 50A1. Another part of the third hole 53A may be formed to extend from the first hole 82B to the outer surface of the body 50A2, and may include an opening 53A1 open to the outer surface of the body 50A2. there is.

For example, the first hole 82B and the third hole 53A may be formed as one hole. That is, the first hole 82B may be formed to extend to the outer surface of the body 50A2, and may include an opening 53A1 open to the outer surface of the body 50A2.

For example, the other end of the 1-2 support member 20B1 may be inserted or fitted into the third hole 53A of the first terminal 27A1 through the opening 53A1 of the hole 53A, and the 1-2 The other end of the support member 20B1 may be inserted or disposed within the first hole 82B. Additionally, for example, the other end of the 1-2 support member 20B1 may be coupled to the first hole 82B of the second coupling portion 82 of the first terminal 27C1 using an adhesive such as epoxy or silicone.

The 1-2 support member 20B1 includes a body A1, a first end A2 (or first fixing part) disposed between one side of the body A1 and the first upper elastic member 150-1, and It may include a second end (A3, or second fixing part) disposed between the other side of the body (A1) and the first terminal (27A1).

The body A1 may have a pillar shape. For example, the body A1 may have a pillar shape with a convex center. For example, the body A1 may have the shape of a ventral column or an entasis, but is not limited thereto. For example, the cross-section of the body A1 in a direction perpendicular to the optical axis may be circular, oval, or polygonal (eg, square).

For example, the body A1 may include at least a portion whose diameter B1 decreases from the center of the body A1 to the first end A2. Additionally, the body A1 may include at least a portion whose diameter B1 decreases from the center of the body A1 to the second end A3. The diameter of the body A1 may be the length of the body A1 in a direction perpendicular to the optical axis.

For example, the diameter B1 of the body A1 may decrease as it moves from the center of the body A1 to the first end A2, and the diameter B1 may decrease as it moves from the center of the body A1 to the second end A3. ) diameter (B1) can be reduced. The diameter of the body A1 may be the length of the body A1 in a direction perpendicular to the optical axis.

For example, the diameter of the body A1 may increase or decrease in the direction from the first end A1 (or the second end A2) to the second end A2 (or the first end A1).

In another embodiment, the diameter of the body (A1) may increase as it moves from the center of the body (A1) to the first end (A2), and as it moves from the center of the body (A1) to the second end (A3), the diameter of the body (A1) may increase. The diameter may be increased.

In another embodiment, the diameter of the body A1 may decrease from the first end A2 to the second end A3. In another embodiment, the diameter of the body A1 may increase from the first end A2 to the second end A3.

In another embodiment, the diameter of the body A1 may be uniform from the first end A1 (or the first connection portion A4) to the second end A3 (the second connection portion A5).

The first end A2 may be connected or coupled to the first upper elastic member 150-1. The first end A2 may be disposed below the second coupling portion 72B of the first outer frame 152 of the first upper elastic member 150-1.

The shape of the first end A2 may be cylindrical, but is not limited to this, and may be a polyhedron (e.g., hexahedron), and the cross-sectional shape in the direction perpendicular to the optical axis may be circular, elliptical, or polygonal (e.g., square). ) can be.

In another embodiment, the first end A2 may be smaller in size (e.g., diameter) than the hole 152a of the first outer frame 152, and the first outer frame of the first upper elastic member 150-1 It may be disposed within the hole 152a of 152 or may pass through the hole 152a.

The second end A3 may be connected or combined with the first terminal 27AC. For example, the second end A3 may be coupled or attached to the first terminal 27AC using an adhesive.

The second end A3 may be disposed below the first hole 82B of the body 50A1 of the first terminal 27AC.

The shape of the second end A3 may be cylindrical, but is not limited to this, and may be a polyhedron (e.g., hexahedron), and the cross-sectional shape in the direction perpendicular to the optical axis may be circular, elliptical, or polygonal (e.g., square). ) can be.

The 1-2 support member 20B1 may further include a first connection portion A4 (or first deformation portion) disposed between the body A1 and the first end A2. The first connection portion (A4) may connect the body (A1) and the first end (A2).

The 1-2 support member 20B1 may further include a second connection portion A5 (or a second deformation portion) disposed between the body A1 and the second end A3. The second connection portion (A5) may connect the body (A1) and the second end (A3). At least a portion of the second connection portion A5 may be disposed in the first hole 82B of the first terminal 27C1. For example, at least a portion of the second connection portion A4 may pass through the first hole 82B.

The length L31 of the body A1 in the optical axis direction may be greater than the lengths T1 and T2 of the first and second ends A2 and A3, respectively.

The length L31 in the optical axis direction of the body A1 may be greater than the lengths L21 and L22 in the optical axis direction of each of the first and second connection parts A4 and A5. In another embodiment, the length of the body A1 in the optical axis direction may be less than or equal to the length of the first and second connection parts A4 and A5 in the optical axis direction.

For example, the length L31 in the optical axis direction of the body A1 may be 30% to 90% of the length L11 in the optical axis direction of the first-second support member 20B1. For example, the length L31 in the optical axis direction of the body A1 may be 65% to 80% of the length L11 in the optical axis direction of the first-second support member 20B1. Or, for example, the length L31 in the optical axis direction of the body A1 may be 68% to 75% of the length L11 in the optical axis direction of the first-second support member 20B1.

The length T1 of the first end A2 in the optical axis direction may be greater than the length T2 of the second end A3 in the optical axis direction. In another embodiment, the length T1 of the first end A2 in the optical axis direction may be equal to or smaller than the length T2 of the second end A3 in the optical axis direction.

The length L21 of the first connection part A4 in the optical axis direction may be equal to the length L22 of the second connection part A5 in the optical axis direction. In another embodiment, the length of the first connection part A4 in the optical axis direction may be different from the length of the second connection part A5 in the optical axis direction. For example, the length of the first connection part A4 in the optical axis direction may be larger or smaller than the length of the second connection part A5 in the optical axis direction.

The diameter B1 of the body A1 may be smaller than or equal to the diameter B2 of the first end A2 (or the diameter B3 of the second end A3). In another embodiment, the diameter B1 of the body A1 may be larger than the diameter B2 of the first end A2 (or the diameter B3 of the second end A3). The diameter B2 (or B3) may be the length of the first end A2 (or the second end A3) in a direction perpendicular to the optical axis.

The diameter B4 of the first connection portion A4 may be smaller than the diameter B2 of the first end A2. Additionally, the diameter B5 of the second connection portion A5 may be smaller than the diameter B3 of the second end portion A3. The diameter B4 (or diameter B5) may be the length of the first connection portion A4 (or the second connection portion A5) in a direction perpendicular to the optical axis.

For example, the diameter B4 of the first connection part A4 and the diameter B5 of the second connection part A5 may each be 150 micrometers to 200 micrometers. Or, for example, the diameter B4 of the first connection portion A4 and the diameter B5 of the second connection portion A5 may each be 160 micrometers to 185 micrometers.

For example, the ratio of the diameter of the 1-1 support member 20A-1 and the diameters B4 and B5 of the first connection portion A4 (or the second connection portion A5) may be 2.14 to 4. Or, for example, The ratio of the diameter of the 1-1 support member 20A-1 and the diameters B4 and B5 of the first connection portion A4 (or the second connection portion A5) may be 2.5 to 3.5. Or, for example, the first connection portion A4 -1 The ratio of the diameter of the support member 20A-1 and the diameters B4 and B5 of the first connection portion A4 (or the second connection portion A5) may be 2.5 to 3.

If the ratio is less than 2.14, the first support member 220-1 cannot stably support the OIS moving part when OIS is driven, and the first-2 support member 20B1 may be disconnected.

On the other hand, if the ratio is greater than 4, it is not easy to deform the first-second support member 20B1 during OIS operation, and as a result, more electromagnetic force is required for normal OIS operation, which may increase power consumption. there is.

For example, the diameter B4 of the first connection portion A4 (or the diameter B5 of the second connection portion A5) is the diameter B2 of the first end A2 (or the diameter of the second end A3 ( It may be 15% to 80% of B3)).

Or, for example, B4 (or B5) may be 20% to 50% of B2 (or B3). Or, for example, B4 (or B5) may be 20% to 30% of B2 (or B3).

The diameters (B4, B5) of each of the first and second connecting portions (A4, A5) are the diameters (B2, B3) of each of the first and second ends (A2, A3) and the diameter (B1) of the body (A1). ), so deformation can easily occur during OIS operation.

If B4 (or B5) is less than 15% of B2 (or B3), the first support member (220-1A) cannot stably support the OIS moving part when OIS is driven, and the first support member (20B1) cannot support the OIS moving part stably. may be disconnected.

On the other hand, if B4 (or B5) is greater than 80% of B2 (or B3), it is not easy to deform the 1-2 support member 20B1 during OIS driving, which results in more electromagnetic force for normal OIS driving. As this becomes necessary, power consumption may increase.

For example, the diameters B4 and B5 of the first and second connecting portions A4 and A5 may be smaller than or equal to the diameter B1 of the body A1. For example, the diameters B4 and B5 of the first and second connecting portions A4 and A5 may be smaller than the diameter of the central portion of the body A1.

In order for at least a portion of the second connection portion (A5) to be disposed within the first hole (82B) of the first terminal (27C1), the diameter of the first hole (82B) of the first terminal (27A1) is that of the second connection portion (A5). It may be larger than the diameter (B5).

Each of the first and second connecting portions A4 and A5 may be in the form of a concave portion formed between the first end A2 and the body A1 and between the second end A3 and the body A1.

The above-described body A1 can be replaced by the “first part”, the first end A2 can be replaced by the “second part”, and the second end A3 can be replaced by the “third part”. The first connection part A4 can be replaced with a “fourth part” or a “first deformation part”, and the second connection part A5 can be replaced with a “fifth part” or a “second deformation part”. can do.

Each of the first connection portion (A4) and the second connection portion (A5) is based on a circle, but may have a different shape of curve, and the number of connection portions may be configured to suit the characteristics of the product. The shape of the connection part may be implemented in a form such as some bending or clamping.

In another embodiment, the first connection part and the second connection part of FIG. 23A may be omitted, one side of the body may be connected to the first end, and the other side of the body may be connected to the second end.

Figure 23b is a perspective view of the 1-2 support member 20B2 according to another embodiment.

Referring to FIG. 23B, the 1-2 support member 20B2 is a modified example of the 1-2 support member 20B1, and is oriented in a direction perpendicular to the optical axis of the body A11 of the 1-2 support member 20B2. The length of may be uniform.

For example, the body A11 may have a line or straight shape with a uniform diameter from one end to the other.

The 1-2 support member 20B2 may include a body A11, a first end A12, and a second end A13. Additionally, the 1-2 support member 20B2 may include a first connection portion A14 connecting the first end A12 and one side of the body A11. Additionally, the 1-2 support member 20B2 may include a second connection portion A15 connecting the second end A12 and the other side of the body A11.

The diameter of the body A11 may be uniform from the first connection portion A14 to the second connection portion A15. The description of the length of each part in the optical axis direction of FIG. 23A may be applied or mutatis mutandis to the length of each part in FIG. 23B in the optical axis direction.

Each of the diameters of the first end A12 and the second end A13 may be equal to the diameter B11 of the body A11. In another embodiment, the diameter of the first end A12 and the diameter of the second end A13 may each be different from the diameter B11 of the body A11.

The diameter of each of the first and second connecting portions A14 and A15 may be smaller than the diameter of the first end A12, the diameter of the second end A13, and the diameter B11 of the body A11.

The ratio relationship between the diameters of the first and second connecting portions A14 and A15 and the diameters of the first and second end portions A12 and A13 may be described in FIG. 23A or applied mutatis mutandis.

Figure 23c is a perspective view of the 1-2 support member 20B3 according to another embodiment.

Referring to FIG. 23C, the 1-2 support member 20B3 may be another modified example of the 1-2 support member 20B1. For example, the length T21' of the body A1 in the optical axis direction is the length T22 of the fourth part A4 (or the fifth part A5) of the 1-2 support member 20B3 in the optical axis direction. It may be greater than or equal to '(or T23')).

For example, the length T21' of the body A1 in the optical axis direction may be 1 [mm] to 1.5 [mm]. For example, T21' may be 1.15 [mm] to 1.3 [mm].

Also, for example, the length T22' of the fourth part A4 in the optical axis direction may be equal to the length T23' of the fifth part A5 in the optical axis direction. For example, T22' and T23' may be 0.8 [mm] to 1.4 [mm]. For example, T22' and T23' may be 1 [mm] to 1.2 [mm].

In another embodiment, the length T22' of the fourth part A4 in the optical axis direction may be different from the length T23' of the fifth part A5 in the optical axis direction. For example, the former may be larger or smaller than the latter.

Also, for example, the length T1' of the first end A2 of the 1-2 support member 20B3 in the optical axis direction and the length T1' of the second end A3 of the 1-2 support member 20B3 in the optical axis direction. Each of the lengths T2' may be smaller than the length T22' of the fourth part A4 in the optical axis direction and/or the length T23' of the fifth part A5 in the optical axis direction.

For example, T1' and T2' may each be 0.1 [mm] to 0.2 [mm]. For example, T1' and T2' may each be 0.1 [mm] to 0.15 [mm].

In addition, the length T1' of the first end A2 in the optical axis direction and the length T2' of the second end A3 in the optical axis direction may be the same, but are not limited thereto and may be used in other embodiments. The two may be different from each other. For example, T1'>T2' or vice versa.

Also, for example, the diameter B2' of the first end A2 of the 1-2 support member 20B3 may be smaller than the diameter B3' of the second end A3 of the 1-2 support member 20B3. You can.

Also, for example, the diameters B4' and B5' of each of the fourth portion A4 and the fifth portion A5 are the diameter B2' of the first end A2 (or the diameter of the second end A3 ( It may be smaller than B3')).

For example, the diameter B2' of the first end A2 may be 0.3 [mm] to 0.5 [mm]. For example, the diameter B2' of the first end A2 may be 0.4 [mm] to 0.44 [mm].

For example, the diameter B3' of the second end A3 may be 0.55 [mm] to 0.7 [mm]. For example, the diameter B3' of the second end A3 may be 0.6 [mm] to 0.65 [mm].

For example, the diameters B4' and B5' of each of the fourth portion A4 and the fifth portion A5 may be 0.15 [mm] to 0.2 [mm]. The diameters (B4', B5') of each of the fourth portion (A4) and the fifth portion (A5) may be 0.16 [mm] to 0.185 [mm].

For example, the diameters B4' and B5' of the fourth portion A4 and the fifth portion A5 may be larger than the diameter (or thickness) of the 1-1 support member 20A. In another embodiment, both may be identical to each other. In another embodiment, the former may be smaller than the latter.

For example, the diameters B4' and B5' of each of the fourth portion A4 and the fifth portion A5 may be 1.5 to 5 times the diameter (or thickness) of the 1-1 support member 20A. For example, the diameters B4' and B5' of each of the fourth portion A4 and the fifth portion A5 may be 1.5 to 3 times the diameter (or thickness) of the 1-1 support member 20A. Or, for example, the diameters (B4', B5') of each of the fourth portion (A4) and the fifth portion (A5) are 2 to 3 times the diameter (or thickness) of the 1-1 support member 20A. You can.

The body A1 of the 1-2 support member 20B3 is a part in contact with the injection part of the mold into which the injection product is injected and has a shape similar to the body A1 of the 1-2 support member 20B1 in FIG. 23A, It can have at least one plane. At this time, the plane may be formed at a position corresponding to the injection portion of the mold.

The 1-2 support member 20B3 may include a protrusion AP protruding from the upper surface of the first end A2. The protrusion AP may be coupled to the second coupling portion 72 of the first upper elastic member 150-1 by the adhesive member.

For example, the second coupling portion 72 of the first upper elastic member 150-1 may have a coupling hole coupled to the protrusion AP of the first-2 support member 20B3, and the protrusion AP At least a portion of may be disposed in the coupling hole, and the adhesive member may be disposed in the protrusion AP and the coupling hole, and may couple both.

For example, the diameter of the protrusion AP may be the same as the diameters B4' and B5' of the fourth portion A4 (or/and the fifth portion A5). In another embodiment, the diameter of the protrusion AP may be smaller or larger than the diameters B4' and B5' of the fourth portion A4 (or/and the fifth portion A5). For example, the diameter of the protrusion AP may be smaller than or equal to the diameter of the coupling hole of the second coupling portion 72 of the first upper elastic member 150-1.

Figure 24 is a perspective view of the first support member 220-1B according to another embodiment.

Referring to FIG. 24, the first support member 220-1B includes two support members, each of which is a first-second support member 20B1 formed of the non-conductive material described in FIG. 23A. You can.

A fourth hole (53B) may be formed in the body (50A3) of the first terminal (27D1) corresponding to the first support member (220-1B), and the fourth hole (54B) is formed on the outer surface of the body (50A2). may include an opening 53B1 that opens, and the description of the third hole 53A and the opening 53A1 of FIG. 23A may be applied or applied mutatis mutandis to the embodiment of FIG. 24.

Figure 25 is a perspective view of the first support member 220-1C according to another embodiment.

Referring to FIG. 25, the first support member 220-1C may include a 1-1 support member 20C11 and a 1-2 support member 20C12.

The 1-1 support member 20A of FIG. 12A is implemented as a single wire, but each of the two support members 20C11 and 20C12 of FIG. 25 may be implemented as two or more wires twisted together.

For example, each of the 1-1st support member 20C11 and the 1-2nd support member 20C12 may have a form in which four strands of wire are twisted.

For example, the diameter (or thickness) of each of the four strand wires may be 20 micrometers to 30 micrometers. For example, the diameter (or thickness) of each of the four strand wires may be 24 micrometers to 28 micrometers. Or, for example, the diameter (or thickness) of each of the four wires may be 26 micrometers to 28 micrometers.

Figure 26 is a perspective view of the first support member 220-1D according to another embodiment.

Referring to FIG. 26, the first support member 220-1D may include a 1-1 support member 20A-2 and a 1-2 support member 20C2. For example, the 1-2 support member 20C2 may be the same as the 1-2 support member 20C12 (or the 1-1 support member 20C11) of FIG. 25.

For example, the 1-1 support member 20A-2 may have a different rigidity (or spring constant) from the 1-1 support member 20A (or the 1-2 support member 20B) of FIG. 12A. . For example, the stiffness (or spring constant) of the 1-1 support member 20A-2 is the stiffness (or spring constant) of the 1-1 support member 20A (or 1-2 support member 20B) of FIG. 12A. constant).

For example, the diameter of the 1-1 support member 20A-2 may be smaller than or equal to the diameter of the 1-1 support member 20A (or the 1-2 support member 20B) of FIG. 12A. For example, the diameter range of the 1-1 support member 20A-2 may be applied or mutatis mutandis to the diameter range of the 1-1 support member 20A of FIG. 12A.

For example, the diameter (or thickness) of the 1-2 support member 20C2 of FIG. 26 may be larger than the diameter (or thickness) of the 1-1 support member 20A-2 of FIG. 26. For example, the ratio of the diameter of the 1-1 support member 20A-2 to the diameter of the 1-2 support member 20C2 may be 1:1.15 to 1:2.4. In another embodiment, the diameter (or thickness) of the 1-2 support member 20C2 of FIG. 26 may be the same as the diameter (or thickness) of the 1-1 support member 20A-2 of FIG. 26A.

On the other hand, the 1-2 support member 20C2 may have a different rigidity (or spring constant) from the 1-1 support member 20A (or the 1-2 support member 20B) of FIG. 12A. For example, the stiffness (or spring constant) of the -2nd support member 20C2 is greater than the stiffness (or spring constant) of the 1-1st support member 20A (or 1-2 support member 20B) of FIG. 12A. It can be big.

Figure 27 is a perspective view of the first support member 220-1E according to another embodiment.

Referring to FIG. 27, the first support member 220-1E may include a 1-1 support member 20C3 and a 1-2 support member 20B1. The description of the 1-1 support member 20C11 of FIG. 25 can be applied or inferred to the first support member 20C3 of FIG. 27, and the description of the 1-2 support member 20B1 of FIG. 23A can be applied to the first support member 20C3 of FIG. 27. It may be applied or applied mutatis mutandis to the 1-2 support member 20B1 of FIG. 27.

For example, the diameter of the 1-1 support member 20C3 may be larger than the diameter B4 or B5 of the first connection portion A4 (or second connection portion A5) of the 1-2 support member 20B1. there is.

For example, the ratio of the diameter of the 1-1 support member 20C3 and the diameter B4 or B5 of the first connection portion A4 (or A5) of the 1-2 support member 20B1 is 1:1.25 to 1: It could be 2.5.

The lens driving device according to the embodiment includes at least one of the first support members 220-1, 220-1A, 220-1B, 220-1C, 220-1D, and 220-1E described in FIGS. 12A, 23A to 27. It can be implemented to include one.

For the same performance, the first support members 200-1 to 220-1E described in FIGS. 12A and 23A to 27 may be designed to have the same rigidity or spring constant. At this time, the spring constant may be a spring constant in the X-axis direction or the Y-axis direction.

The first support member 220-1, 220-1B, or 220-1C in FIGS. 12A, 24, and 25 includes two support members with the same rigidity.

The injection material support member 20B1 shown in FIG. 24 has a longer lifespan than the wire-shaped support members 20A and 20B shown in FIG. 12A. Additionally, the support members 20C11 and 20C12 of FIG. 25 have a longer lifespan than the wire-shaped support members 20A and 20B of FIG. 12A.

Comparing the embodiment of FIG. 23A with the embodiment of FIG. 12A is as follows.

In order to show the same performance, the rigidity (or spring constant) of the first support member 220-1A of Figure 23a is the same or similar to the rigidity (or spring constant) of the first support member 220-1 of Figure 12a. It must be designed.

To this end, in the embodiment of FIG. 23A, the 1-1 support member 20A-1 may be designed to have a rigidity smaller than that of the 1-1 support member 20A of FIG. 12A, and the 1-1 support member 20A-1 of FIG. 12A may be The first-second support member 20B1 may be designed to be greater than the rigidity of the first support member 20A.

Compared to the 1-1 support member 20A of FIG. 12A, the 1-1 support member 20A-1 of FIG. 23A can be better bent, thereby suppressing or preventing disconnection due to external impact. there is.

In addition, since the 1-2 support member 20B1 is formed of an injection material, the lifespan is longer compared to the 1-1 support member 20A of FIG. 12A, so that the support member 220-1A of FIG. 23A The lifespan may be longer than that of the support member 220-1 in FIG. 12A.

For the same reason, in the embodiment of FIG. 26, disconnection of the 1-1 support member 20A-2 can be suppressed or prevented, and the lifespan of the first support member 220-1D can be extended.

In order to implement high-quality images, the size (eg, weight) of the lens module mounted on the lens driving device may be increased. In an OIS VCM in which a lens module of high weight (for example, a weight of 0.4 grams (g) or more) is mounted, disconnection of a support member having a wire shape may occur. In particular, breakage may occur at the portion where the upper end of the support member (eg, wire) is soldered and the portion where the lower end of the support member is soldered.

In order to prevent or suppress disconnection of such support members, as shown in FIGS. 12A to 27, two support members may be disposed at one corner of the housing 140 in the embodiment.

Compared to a lens driving device according to another embodiment (hereinafter referred to as “another embodiment”) having a structure in which only one wire is disposed in one corner of the housing, in the embodiment, two wires are located in at least one corner of the housing 140. Since two wires are disposed, the number of wires increases, and thus the elastic force (or restoring force) of the support member can be increased.

Compared to the other embodiments in which only one wire is disposed at one corner of the housing, in the embodiments shown in FIGS. 12A to 27, the elastic force (restoring force) of the support member is increased, so for smooth and normal OIS operation, the OIS coil is required. An increase in electromagnetic force is required due to the interaction between magnets and magnets.

To increase the electromagnetic force, the second coil 230 according to the embodiment may be in the form of a winding coil, coil bundle, coil body, or coil block, thereby improving the electromagnetic force.

However, when the second coil in the form of a winding coil is placed on the circuit board (hereinafter referred to as a “comparative example”), the separation distance between the second coil and the magnet (or the lower stopper of the housing) becomes too small and the second coil and the magnet (or the lower stopper of the housing) become too small. A collision between magnets (or a stopper on the lower side of the housing) may cause damage to the second coil or create foreign substances due to the collision.

In order to prevent damage and the generation of foreign substances due to such collisions, the second coil 230 may be placed under the circuit board 250 in the embodiment. That is, the second coil 230 may be located between the lower surface of the circuit board 250 and the upper surface of the base 210, and may be disposed within the seating portions 213A1 to 213A4 formed on the upper surface of the base 210. .

FIG. 21A shows the arrangement of a magnet (eg, 130-1) placed in the housing 140, a coil unit (eg, 230-1) placed in the base 210, and the circuit board 250. The description of FIG. 21A may also be applied or applied to other magnets 130-2 to 130-4 and other coil units 230-2 to 230-4.

Referring to FIG. 21A, the lower surface 66A of the magnet (eg, 130-1) may protrude from the lower end 140A or the lower surface of the housing 140 toward the circuit board 250. For example, the lower end 140A of the housing 140 may be the lowest part of the housing 140 or the part closest to the top of the circuit board 250.

Since the coil unit (eg, 230-1) is located below the circuit board 250, the magnet (eg, 230-1) and the coil unit (eg, 230-1) may not collide with each other. The upper surface of the magnet (for example, 130-1) and the circuit board 250 may collide due to an external impact, etc., and in Figure 21a, the circuit board 250 can absorb the impact of the magnet (130-1).

Additionally, compared to the comparative example, in the embodiment of FIG. 21A, the area of the collision point 48A or area on the upper surface of the magnet 130-1 and the circuit board 250 can be increased, so the impact can be dispersed, Because of this, it is possible to have a structure with strong resistance to impact.

As shown in FIG. 21A, the height of the upper surface of the protrusions 16A and 16B of the protrusion 15-1 may be lower than or equal to the height of the upper surface of the coil unit (eg, 230-1). Additionally, the protrusions 16A and 16B of the protrusion 15-1 and the magnet (eg, 130-1) may overlap in the optical axis direction. For example, the width W1 of the magnet (eg, 130-1) may be larger than the width of the protrusions 16A and 16B.

For example, in FIG. 21A, a circuit pattern or wiring may be formed in an area of the circuit board 250 corresponding to the protrusions 15-1 and 15-1A in the optical axis direction, but the present invention is not limited thereto. In another embodiment, a circuit pattern or wiring may not be formed in an area of the circuit board 250 corresponding to the protrusions 15-1 and 15-1A in the optical axis direction.

Figure 21b shows the protrusion 15-1A of the base 210 according to another embodiment.

Referring to FIG. 21B, the height of the top surface of the protrusion 15-1A (or protrusion) may be higher than the height of the top surface or top of the second coil 230 (eg, 230-1). For example, the protrusion 15-1A (or protrusion) and the magnet (e.g., 130-1) may overlap in the direction of the optical axis, and the width W1 of the magnet (e.g., 130-1) is the same as that of the protrusion (15-1A). It may be larger than the width of the (or protrusion).

Also, for example, at least a portion of the protrusion 15-1A (or protrusion) may be exposed to the upper surface of the circuit board 250. For example, at least a portion of the upper surface of the protrusion 15-1A may be exposed to the upper surface of the circuit board 250.

For example, the circuit board 250 may include an opening 33A for exposing at least a portion of the upper surface of the protrusion 15-1A (or protrusion). For example, the opening 33A may be a hole or a groove. For example, the opening 33A may be a through hole that penetrates the circuit board 250 in the optical axis direction.

At least a portion of the protrusion 15A-1 (or protrusion) may be disposed within the hole 33A of the circuit board 250. For example, the top surface of the protrusion 15-1A (or protrusion) may be flush with the top surface of the circuit board 250, but is not limited thereto. In another embodiment, the upper surface of the protrusion may be lower than the upper surface of the circuit board 250 and higher than the upper surface of the coil unit (eg, 230-1).

In FIG. 21B, the protrusion 15-1A (or protrusion) exposed from the opening 33A of the circuit board 250 and the upper surface of the circuit board 250 absorb the shock caused by collision with the magnet (e.g., 130-1). It can act as a stopper.

Figure 21c shows the protrusion 15-1B of the base 210 according to another embodiment.

Referring to FIG. 21C, at least a portion of the protrusion 15-1B (or protrusion) may protrude from the upper surface of the circuit board 250 toward the magnet 130-1. For example, at least a portion of the protrusion 15-1B (or protrusion) may pass through the circuit board 250.

For example, the height of the top surface of the protrusion 15-1B (or protrusion) may be higher than the height of the top surface of the circuit board 250. For example, the separation distance in the optical axis direction between the protrusion 15-1B (or protrusion) and the magnet (e.g., 130-1) is the distance in the optical axis direction between the upper surface of the circuit board 250 and the magnet (e.g., 130-1). It can be smaller than the distance.

For example, the circuit board 250 may include an opening 33A through which at least a portion of the protrusion 15-1B (or protrusion) passes. At least a portion of the protrusion 15-1B (or protrusion) may be disposed within the hole 33A of the circuit board 250.

In FIG. 21C, the protrusion 15-1B (or protrusion) protruding from the opening 33A of the circuit board 250 may serve as a stopper to absorb shock caused by collision with the magnet 130-1.

For example, in FIGS. 21B and 21C, a circuit pattern or wiring may not be formed in an area of the circuit board 250 corresponding to the protrusion 215A2 in the optical axis direction.

23A and 27, the support member disposed at one corner of the housing 140 includes wire-shaped support members 20A-1 and 20C3 made of a conductive material and a support member 20B1 made of a non-conductive material. can do. As a result, compared to the embodiment of FIG. 12A having two wires, the embodiments of FIGS. 23A and 27 exhibit AF and OIS driving characteristics similar to those of FIG. 12A, while at the same time reinforcing the elastic force and reducing the lifespan of the support member. can be increased, and stable OIS operation can be performed.

Figure 28a shows the displacement and tilt characteristics of the AF moving part of the first case (CASE 1) and the second case (CASE 2).

The first case (CASE 1) relates to an embodiment of providing the two wires (20A, 20B) of FIG. 12A at one corner of the housing 140, and the second case (CASE2) is located at one corner of the housing 140. This relates to an embodiment having two support members 20A-1 and 20B1 of FIG. 23A at the corners.

The X-axis of the graph of FIG. 28A may be the current value of the driving signal provided to the first coil 120, and the unit of the current value may be milliampere [mA]. The Y-axis may be the displacement of the AF moving unit, and the unit may be micrometer [㎛]. For example, the origin may be the initial position of the AF moving unit. Additionally, each of 501A and 501B may be a displacement of the AF moving unit, and 502A and 502B may be a tilt of the AF moving unit in the Z-axis direction.

Referring to FIG. 28A, the displacement and tilt characteristics of the AF moving parts of the first case (CASE1) and the second case (CASE2) may be similar.

Figure 28b shows the displacement and tilt characteristics of the OIS moving part of the first case (CASE 1) and the second case (CASE 2).

The The Y-axis may be the displacement of the OIS moving part (eg, displacement in the X-axis direction), and the unit may be micrometer [㎛]. Each of 503A and 503B may be a displacement of the OIS moving part, and 504A and 504B may be a tilt of the OIS moving part in the Z-axis direction.

Referring to FIG. 28B, the displacement and tilt characteristics of the OIS moving part of the first case (CASE1) and the second case (CASE2) may be similar.

Figure 29 shows the frequency response characteristics for OIS driving in the first case (CASE 1) and the second case (CASE 2). The X-axis in Figure 29 represents frequency, and the Y-axis represents gain and phase. Frequency response characteristics can be measured using a Frequency Response Analyzer (FRA).

f1 may be a frequency response characteristic related to the gain of the first case (CASE1), and f2 may be a frequency response characteristic related to the gain of the second case (CASE2). g1 may be a frequency response characteristic related to the phase of the first case (CASE1), and g2 may be a frequency response characteristic related to the phase of the second case (CASE 2).

The frequency response characteristics regarding the gain of the first case (CASE1) may be similar to the frequency response characteristics regarding the gain of the second case (CASE2), and the frequency response characteristics regarding the phase of the first case (CASE1) may be similar to those of the second case (CASE2). It may be similar to the frequency response characteristics regarding phase in (CASE2).

For example, the first resonance frequency f11 of the first case CASE1 and the first resonance frequency f12 of the second case CASE2 may be similar. Also, for example, the second resonance frequency f21 of the first case (CASE1) and the second resonance frequency (f22) of the second case (CASE2) may be similar. For example, the first resonance frequency f12 of the second case CASE2 may be greater than the first resonance frequency f11 of the first case CASE1, and the second resonance frequency f11 of the second case CASE2 may be greater than the first resonance frequency f11 of the first case CASE1. (f22, 250Hz) may be smaller than the second resonance frequency (f21, 270Hz) of the first case (CASE1).

For example, the first resonance frequency f11 of the first case (CASE1) and the first resonance frequency (f12) of the second case (CASE2) may each be 40 [Hz] to 70 [Hz]. Also, for example, the secondary resonance frequency f21 of the first case (CASE1) and the secondary resonance frequency (f22) of the second case (CASE2) may each be 240 [Hz] to 300 [Hz].

FIG. 30 shows a portion of the base 210-1 according to another embodiment, and FIG. 31 shows the first terminal 27A11 disposed on the base 210-1 of FIG. 30 according to another embodiment.

30 and 31, the third surface 30C of the base 210-1 has at least one protrusion or coupling protrusion 19 protruding from the lower surface of the base 210-1 in the direction toward the upper surface. can be formed.

In FIG. 30, two coupling protrusions 19A and 19B spaced apart from each other are formed on the third surface 30C, but the present invention is not limited thereto, and in other embodiments, the number of coupling protrusions may be one or more.

The terminal 27A11 is a modified example of the terminal 27A1 of FIG. 10, and the body 50A2 of the terminal 27A11 has at least one coupling hole 51A, 51B for coupling with the coupling protrusion 19 of the base 210. ) or may include a hole. For example, the coupling holes 51A and 51B may be through holes. The number of coupling holes may be the same as the number of coupling protrusions 19, and may be one or more. The coupling protrusions (91A, 91B) may be inserted into the coupling holes (51A, 51B) or may penetrate the coupling holes (51A, 51B).

In order for the coupling protrusion 19 of the base 210-1 and the coupling holes 51A and 51B of the terminal 27A11 to be stably coupled to each other, the height of the coupling protrusion 19 is the length in the optical axis direction of the terminal 27A11. Or it may be greater than the thickness. In another embodiment, the height of the coupling protrusion 19 may be equal to or smaller than the length or thickness of the terminal 27A11 in the optical axis direction.

Additionally, the height of the coupling protrusion 19 of the base 210-1 may be smaller than the second step (or the distance in the optical axis direction) between the first surface 30A and the third surface 30C. In another embodiment, the height of the coupling protrusion 19 may be equal to the second step (or the distance in the optical axis direction) between the first surface 30A and the third surface 30C.

The coupling protrusion 19 of the base 210-1 may be located between the coupling portions 81 and 82 of the terminal 27A11 and the second step surface 31B, but is not limited thereto.

Meanwhile, the lens driving device according to the above-described embodiment may be used in various fields, for example, camera modules, cameras, camera devices, or optical devices.

In addition, the lens driving device 100 according to the embodiment forms an image of an object in space by using the characteristics of light, such as reflection, refraction, absorption, interference, and diffraction, and aims to increase the visual power of the eye or uses a lens. It may be included in an optical instrument for the purpose of recording and reproducing images, or for optical measurement, propagation or transmission of images, etc. For example, optical devices according to embodiments 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.

Figure 32 shows an exploded perspective view of the camera device 200 according to an embodiment.

Referring to FIG. 32, the camera device 200 may include a lens barrel 400, a lens driving device 100, and an image sensor 810.

For example, the camera device 200 may further include a filter 610 and a second holder 800. Or, for example, the camera device 200 may further include a first holder 600. Additionally, the camera device 200 may further include a control unit 830. Also, for example, the camera device 200 may further include at least one of an adhesive member 612, a motion sensor 820, and a connector 840.

A lens barrel 400 may be mounted on the bobbin 110 of the lens driving device 100.

The first holder 600 may be placed below the base 210 of the lens driving device 100. The filter 610 is mounted on the first holder 600, and the first holder 600 may have a protrusion 500 on which the filter 610 is seated.

The adhesive member 612 may couple or attach the base 210 of the lens driving device 100 to the first holder 600. In addition to the above-described adhesive role, the adhesive member 710 may also serve to prevent foreign substances from entering the lens driving device 100.

For example, the adhesive member 612 may be epoxy, thermosetting adhesive, ultraviolet curing adhesive, etc.

The filter 610 may serve to block light of a specific frequency band from light passing through the lens barrel 400 from entering the image sensor 810. The filter 610 may be an infrared blocking filter, but is not limited thereto. At this time, the filter 610 may be arranged parallel to the x-y plane.

An opening may be formed in a portion of the first holder 600 where the filter 610 is mounted to allow light passing through the filter 610 to enter the image sensor 810.

The second holder 800 is disposed below the first holder 600, and the image sensor 810 may be mounted on the second holder 600. The image sensor 810 is a site where light passing through the filter 610 is incident and an image included in the light is formed.

The second holder 800 may be equipped with various circuits, elements, and control units to convert the image formed on the image sensor 810 into an electrical signal and transmit it to an external device.

The second holder 800 can be implemented as a circuit board on which an image sensor can be mounted, a circuit pattern can be formed, and various elements can be combined.

The first holder 600 may be expressed as “holder” or “sensor base,” and the second holder 800 may be expressed as “substrate” or “circuit board.”

The image sensor 810 may receive an image included in light incident through the lens driving device 100 and convert the received image into an electrical signal.

The filter 610 and the image sensor 810 may be arranged to be spaced apart from each other in the first direction.

The motion sensor 820 is mounted on the second holder 800 and can be electrically connected to the control unit 830 through a circuit pattern provided on the second holder 800.

The motion sensor 820 outputs rotational angular velocity information resulting from the movement of the camera device 200. The motion sensor 820 may be implemented as a 2-axis or 3-axis gyro sensor, or an angular velocity sensor.

The control unit 830 is mounted on the second holder 800 and may be electrically connected to the first position sensor 170 and the second position sensor 240 of the lens driving device 100. Additionally, the control unit 830 may be electrically connected to the first coil 170 and the second coil 230.

For example, the second holder 800 may be electrically connected to the circuit board 250 of the lens driving device 100, and the control unit 830 mounted on the second holder 800 may be connected to the circuit board 250 through the circuit board 250. It may be electrically connected to the first position sensor 170 and the second position sensor 240. Additionally, the control unit 830 may be electrically connected to the first coil 120 and the second coil 230 through the circuit boards 250 and 800.

The control unit 830 may provide a driving signal to each of the first position sensor 170, the first sensor 240A, and the second sensor 240B.

For example, in another embodiment, the control unit 830 may provide a power signal to at least one of the first position sensor 170, the first sensor 240A, and the second sensor 240A, and may provide a clock signal for I2C communication. Signals and data signals may be transmitted and received to at least one of the first position sensor 170, the first sensor 240A, and the second sensor 240B.

Additionally, the control unit 830 may perform a feedback auto-focusing operation on the AF moving unit of the lens driving device based on the output provided from the first position sensor 170.

Additionally, the control unit 830 may perform an image stabilization operation on the OIS moving unit of the lens driving device 100 based on the output of the first sensor 240A and the output of the second sensor 240B.

The connector 840 is electrically connected to the second holder 800 and may have a port for electrical connection to an external device.

FIG. 33 shows a perspective view of a portable terminal 200A according to an embodiment, and FIG. 34 shows a configuration diagram of the portable terminal shown in FIG. 33.

33 and 34, the portable terminal (200A, hereinafter referred to as “terminal”) includes a body 850, a wireless communication unit 710, an A/V input unit 720, a sensing unit 740, and an input/output unit 720. It may include an output unit 750, a memory unit 760, an interface unit 770, a control unit 780, and a power supply unit 790.

The body 850 shown in FIG. 33 has a bar shape, but is not limited to this, and is a slide type, folder type, or swing type in which two or more sub-bodies are coupled to enable relative movement. It may have various structures such as , swirl type, etc.

The body 850 may include a case (casing, housing, cover, etc.) that forms the exterior. For example, the body 850 may be divided into a front case 851 and a rear case 852. Various electronic components of the terminal may be built into the space formed between the front case 851 and the rear case 852.

The wireless communication unit 710 may be configured to include one or more modules that enable wireless communication between the terminal 200A and a wireless communication system or between the terminal 200A and the network where the terminal 200A is located. For example, the wireless communication unit 710 may be configured to include a broadcast reception module 711, a mobile communication module 712, a wireless Internet module 713, a short-range communication module 714, and a location information module 715. there is.

The A/V (Audio/Video) input unit 720 is for inputting audio or video signals and may include a camera 721 and a microphone 722.

The camera 721 may be a camera including the camera device 200 according to an embodiment.

The sensing unit 740 monitors the current state of the terminal 200A, such as the open/closed state of the terminal 200A, the location of the terminal 200A, presence or absence of user contact, the direction of the terminal 200A, acceleration/deceleration of the terminal 200A, etc. It is possible to detect and generate a sensing signal to control the operation of the terminal 200A. For example, if the terminal 200A is in the form of a slide phone, it can sense whether the slide phone is opened or closed. In addition, it is responsible for sensing functions related to whether the power supply unit 790 supplies power and whether the interface unit 770 is connected to an external device.

The input/output unit 750 is for generating input or output related to vision, hearing, or tactile sensation. The input/output unit 750 can generate input data for controlling the operation of the terminal 200A and can also display information processed by the terminal 200A.

The input/output unit 750 may include a key pad unit 730, a display module 751, a sound output module 752, and a touch screen panel 753. The key pad unit 730 can generate input data through key pad input.

The display module 751 may include a plurality of pixels whose colors change according to electrical signals. For example, the display module 751 may be a liquid crystal display, a thin film transistor-liquid crystal display, an organic light-emitting diode, a flexible display, or a three-dimensional display. It may include at least one display (3D display).

The audio output module 752 outputs audio data received from the wireless communication unit 710 in call signal reception, call mode, recording mode, voice recognition mode, or broadcast reception mode, or stored in the memory unit 760. Audio data can be output.

The touch screen panel 753 can convert the change in capacitance that occurs due to the user's touch to a specific area of the touch screen into an electrical input signal.

The memory unit 760 may store programs for processing and controlling the control unit 780, and stores input/output data (e.g., phone book, messages, audio, still images, photos, videos, etc.). It can be stored temporarily. For example, the memory unit 760 may store images captured by the camera 721, such as photos or videos.

The interface unit 770 serves as a passage connecting external devices connected to the terminal 200A. The interface unit 770 receives data from an external device, receives power and transmits it to each component inside the terminal 200A, or transmits data inside the terminal 200A to an external device. For example, the interface unit 770 includes a wired/wireless headset port, an external charger port, a wired/wireless data port, a memory card port, a port for connecting a device equipped with an identification module, and audio I/O (Input/ Output) port, video I/O (Input/Output) port, and earphone port.

The controller 780 can control the overall operation of the terminal 200A. For example, the control unit 780 may perform related control and processing for voice calls, data communications, video calls, etc.

The control unit 780 may be equipped with a multimedia module 781 for multimedia playback. The multimedia module 781 may be implemented within the control unit 180 or may be implemented separately from the control unit 780.

The control unit 780 can perform pattern recognition processing to recognize handwriting or drawing input on the touch screen as text and images, respectively.

The features, structures, effects, etc. described in the embodiments above are included in at least one embodiment of the present invention and are not necessarily limited to only one embodiment. Furthermore, the features, structures, effects, etc. illustrated in each embodiment can be combined or modified and implemented in other embodiments by a person with ordinary knowledge in the field to which the embodiments belong. Therefore, contents related to such combinations and modifications should be construed as being included in the scope of the present invention.

Claims (23)

Base;
a circuit board disposed on the base;
a housing disposed on the circuit board;
a bobbin disposed within the housing;
a support member coupled to the upper part of the bobbin and the upper part of the housing;
a first coil and a magnet that move the bobbin in the optical axis direction;
a second coil facing the magnet in the optical axis direction; and
It includes a support member coupled to the upper elastic member,
The second coil is a coil bundle that has a hollow body and is joined to the circuit board at both ends by solder,
The support member is a lens driving device including a first wire and a second wire disposed at one corner of the housing. According to paragraph 1,
The second coil is a lens driving device disposed between the circuit board and the base. According to paragraph 2,
A lens driving device wherein the hollow portion of the second coil is coupled to at least a portion of the base. According to paragraph 1,
The base includes a groove recessed from the upper surface,
A lens driving device wherein the second coil is disposed in the groove. According to paragraph 1,
The upper surface of the base is,
a first surface in contact with the lower surface of the circuit board; and
It includes a second surface that has a step difference from the first surface and is located lower than the first surface,
The second coil is a lens driving device disposed on the second surface. According to clause 5,
A lens driving device wherein the second coil has an upper surface lower than or at the same height as the first surface. According to clause 5,
A protrusion is formed on the second surface,
The second coil is a lens driving device having a central hole coupled to the protrusion. In clause 7,
A lens driving device wherein the upper surface of the protrusion has a height lower than or equal to that of the first surface. According to paragraph 1,
The circuit board is a lens driving device including a pad electrically connected to the second coil. According to clause 9,
A lens driving device wherein the pad is disposed on a lower surface of the circuit board. According to clause 9,
The pad is a lens driving device disposed on the upper surface of the circuit board. According to paragraph 1,
The second coil has a number of turns of 40 to 80 turns and is in the form of a strand covered with a conductive wire. According to paragraph 1,
The magnet includes a plurality of magnets disposed in the housing,
The second coil is a lens driving device including a plurality of coil units corresponding to the plurality of magnets. According to clause 13,
The base is a lens driving device including seating parts for disposing the plurality of coil units. According to paragraph 1,
A lens driving device wherein the magnet is disposed on the housing, and the first coil is disposed on the bobbin. According to paragraph 1,
The first wire and the second wire are electrically connected to the circuit board. According to paragraph 1,
A sensing magnet disposed on the bobbin; and
A lens driving device including a first position sensor facing the sensing magnet. According to clause 17,
The first position sensor is a lens driving device disposed on the base. According to clause 16,
The first wire and the second wire are coupled to the circuit board. According to clause 16,
A terminal portion disposed on the base and electrically connected to the circuit board,
The first and second wires are coupled to the terminal portion and electrically connected to the terminal portion. According to clause 13,
a first sensor opposed to one of the plurality of magnets in the optical axis direction and disposed on the base; and
A lens driving device including a second sensor disposed on the base and facing another one of the plurality of magnets in the optical axis direction. According to paragraph 1,
A driving signal is supplied to the second coil through the circuit board, and the housing moves in a direction perpendicular to the optical axis due to interaction between the second coil and the magnet. Base;
a circuit board disposed on the base;
a housing disposed on the circuit board;
a bobbin disposed within the housing;
a first coil and a magnet that move the bobbin in the optical axis direction;
an upper elastic member coupled to the upper part of the bobbin and the upper part of the housing;
a support member whose one end is coupled to the upper elastic member and whose other end is electrically connected to the circuit board; and
A second coil faces the magnet in the optical axis direction and is disposed under the lower surface of the circuit board,
The base is a lens driving device including an accommodating portion for accommodating the second coil.

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