KR20210002824A - Camera module and optical instrument including the same - Google Patents

Abstract

The present invention is to prevent an electrical short from occurring between a terminal of a lower elastic member and a sensing coil. According to an embodiment of the present invention, provided is a lens driving device which comprises: a housing; a bobbin disposed in the housing; a coil disposed in the bobbin; a magnet disposed in the housing; a base disposed under the housing; a sensing coil disposed on an outer surface of the base, and generating an inducted voltage by an interaction with the coil; a circuit board disposed on the outer surface of the base; and an elastic member coupled to the bobbin and the housing and disposed on the base. The elastic member includes at least one terminal disposed on the outer surface of the base. The circuit board includes: a first terminal electrically connected to one end of any one of the coil and the sensing coil; and a second terminal electrically connected to the other end of any one of the coil and the sensing coil.

Description

A lens driving device, a camera module, and an optical device including the same.

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

Camera modules for ultra-compact and low power consumption are difficult to apply the technology of a voice coil motor (VCM) used in a conventional camera module, and related studies have been actively conducted.

Demand and production of electronic products such as smart phones and mobile phones equipped with cameras are increasing. Mobile phone cameras are trending toward higher pixel and smaller size, and accordingly, actuators are also becoming smaller, larger, and multifunctional. In order to implement a high-pixel mobile phone camera, additional functions such as improved performance of the mobile phone camera, auto focusing, improved shutter shake, and a zoom function are required.

The embodiment provides a lens driving device, a camera module, and an optical device including the same, capable of preventing an electrical short from occurring between a terminal of a lower elastic member and a sensing coil.

The lens driving apparatus according to the embodiment includes a housing; A bobbin disposed in the housing; A coil disposed on the bobbin; A magnet disposed in the housing; A base disposed under the housing; A sensing coil disposed on an outer surface of the base and generating an induced voltage by an interaction with the coil; A circuit board disposed on the outer surface of the base; And an elastic member coupled to the bobbin and the housing and disposed on the base, wherein the elastic member includes at least one terminal disposed on the outer surface of the base, and the circuit board includes the coil and the And a first terminal electrically connected to one end of the sensing coil, and a second terminal electrically connected to the other end of the coil and the sensing coil.

At least a portion of the circuit board may be disposed between the sensing coil and the at least one terminal of the elastic member.

A groove may be formed on the outer surface of the base, and the sensing coil may be disposed in the groove.

The circuit board includes a first portion disposed on an upper surface of the base; A second portion bent from the first portion of the base to the outer surface of the base; And an extension part extending from the second part and disposed between the sensing coil and the at least one terminal of the elastic member.

At least a portion of the extension part may be disposed in the groove of the base.

The elastic member includes a first elastic member including a first terminal disposed on the outer surface of the base and a second elastic member including a second terminal disposed on the outer surface of the base, and the extension part A first extension part disposed between a part of the sensing coil and the first terminal, and a second extension part disposed between another part of the sensing coil and the second terminal.

The circuit board includes a first pad provided on the first portion and coupled to one end of the coil and the sensing coil, and a second pad coupled to the other end of the coil and the sensing coil, , The first pad may be electrically connected to the first terminal of the circuit board, and the second pad may be electrically connected to the second terminal of the circuit board.

The extension may be formed of an insulating member.

A first region disposed between the sensing coil and the at least one terminal of the elastic member; A second region connecting one side of the first region and the second portion; And a third area extending from the other side of the first area.

The outer surface of the base is a first outer surface, a second outer surface positioned opposite to the first outer surface, and a third outer surface disposed between the first outer surface and the second outer surface and positioned opposite to each other. It includes a side surface and a fourth outer surface, the base includes a groove formed in each of the first to fourth outer surfaces of the base, the sensing coil is disposed in the groove of the base, the elastic member The at least one terminal of the base is disposed on the first outer surface of the base, and the circuit board is disposed on the first outer surface of the base, and a part of the sensing coil disposed on the first outer surface and the elasticity It may include an extension portion disposed between the at least one terminal of the member.

The embodiment may prevent an electrical short from occurring between the terminal of the lower elastic member and the sensing coil.

1 is an exploded perspective view of a lens driving apparatus according to an embodiment.
2 shows an assembly diagram of the lens driving device excluding the cover member.
3A is a perspective view of the bobbin shown in FIG. 1.
3B is a diagram illustrating a combination of a bobbin and a coil.
4A is a perspective view of the housing.
4B shows a coupling diagram of the housing and the magnet.
5 is a perspective view of the base.
6 is a perspective view of a lower elastic member.
7A is an enlarged perspective view of a circuit board.
7B is an enlarged view of a circuit board according to another embodiment.
8 is a plan view of a base and a circuit board.
9 is a perspective view of a base, a lower elastic member, a sensing coil, and a circuit board.
10A is a cross-sectional view in the AB direction of FIG. 2.
10B is a cross-sectional view in the CD direction of FIG. 2.
11A is a cross-sectional view in the EF direction of FIG. 9.
11B is a cross-sectional view in the GH direction of FIG. 9.
12 is a plan view of a base, a sensing coil, and a circuit board.
13 illustrates an arrangement of a base, a sensing coil, and a circuit board according to another exemplary embodiment.
14 is a cross-sectional view in the EF direction of FIG. 9 according to the embodiment of FIG. 13.
15 is a cross-sectional view in the GH direction of FIG. 9 according to the embodiment of FIG. 13.
16 is an exploded view of a camera module according to an embodiment.
17 is a perspective view of a portable terminal according to an embodiment.
18 is a block diagram of the portable terminal illustrated in FIG. 17.

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

However, the technical idea of the present invention is not limited to some embodiments to be described, but may be implemented in various different forms, and within the scope of the technical idea of the present invention, one or more of the constituent elements may be selectively selected between the embodiments. It can be combined with and substituted for use.

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 of ordinary skill in the technical field to which the present invention belongs, unless explicitly defined and described. It can be interpreted as, and generally used terms such as terms defined in a dictionary may be interpreted in consideration of the meaning of the context of the related technology.

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

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

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 the other component, but also the component and The case of being'connected','coupled' or'connected' due to another component between the other components may also be included. In addition, when it is described as being formed or disposed on the “top (top) or bottom (bottom)” of each component, the top (top) or bottom (bottom) is one as well as when the two components are in direct contact with each other. It also includes a case in which the above other component is formed or disposed between the two components. In addition, when expressed as "upper (upper) or lower (lower)", it may include not only an upward direction but also a downward direction based on one component.

“Auto focusing” refers to automatically focusing the image of a subject on the image sensor surface. The lens driving apparatus according to the embodiment may perform an auto focusing operation to move an optical module including at least one lens in a first direction.

Hereinafter, the lens driving device may be referred to as a lens driver, a voice coil motor (VCM), an actuator, or a lens moving device, and the term "coil" is referred to as a coil unit. The term "elastic member" may be replaced with an elastic unit or a spring.

In addition, in the following description, "terminal" may be represented by replacing it with a pad, an electrode, a conductive layer, or a bonding part.

For convenience of description, the lens driving apparatus according to the embodiment is described using a Cartesian coordinate system (x, y, z), but may be described using other coordinate systems, and the embodiment is not limited thereto. In each drawing, the x-axis and y-axis mean a direction 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 a'third direction'.

FIG. 1 is an exploded perspective view of a lens driving apparatus 100 according to an exemplary embodiment, and FIG. 2 is a combined view of the lens driving apparatus 100 excluding the cover member 300.

1 and 2, the lens driving device 100 includes a bobbin 110, a coil 120, a magnet 130, a housing 140, a base 210, and a sensing coil. 170), a lower elastic member 160, and a circuit board 180 may be included.

In addition, the lens driving device 100 may further include at least one of an upper elastic member 150 and a cover member 300.

The bobbin 110 and the housing 140 will be described.

3A is a perspective view of the bobbin 110 shown in FIG. 1, FIG. 3B is a combination view of the bobbin 110 and the coil 120, FIG. 4A is a perspective view of the housing 140, and FIG. 4B is a housing 140 ) Shows the degree of coupling of the magnet 140.

The bobbin 110 is disposed in the housing 140 and may move in a direction parallel to the optical axis OA or parallel to the optical axis by electromagnetic interaction between the coil 120 and the magnet 130.

The bobbin 110 may have an opening or a hollow for mounting a lens or a lens barrel. The shape of the opening (or hollow) of the bobbin 110 may match the shape of the lens or lens barrel to be mounted, and may be, for example, a circle, an ellipse, or a polygon, but is not limited thereto. For example, the opening of the bobbin 110 may be in the form of a hole penetrating the bobbin 110 in the optical axis direction.

A lens or a lens module may be directly coupled to the inner surface of the bobbin 110, but is not limited thereto. For example, the bobbin 110 may include a lens barrel (not shown) in which at least one lens is installed therein, and the lens barrel may be coupled to the inner surface of the bobbin 110 in various ways. For example, a thread for coupling to a lens or a lens module may be formed on the inner surface of the bobbin 110.

At least one first coupling portion 113 for coupling and fixing to the inner frame 151 of the upper elastic member 150 may be provided on an upper surface, an upper portion, or an upper end of the bobbin 110.

At least one second coupling portion 117 for coupling and fixing to the inner frame 161 of the lower elastic member 160 may be provided at a lower surface, a lower portion, or a lower portion of the bobbin 110.

For example, in FIGS. 3A and 3B, each of the first coupling portion 113 and the second coupling portion 117 of the bobbin 110 has a protrusion shape, but is not limited thereto, and in other embodiments, the first coupling portion 113 and the second coupling portion 117 At least one of the first and second coupling portions may have a coupling groove or a flat shape.

A first escape groove 112a may be provided in a region of the upper surface of the bobbin 110 corresponding to or aligned with the first frame connection part 153 of the upper elastic member 150.

In addition, a second escape groove 112b may be provided in a region of the lower surface of the bobbin 110 corresponding to or aligned with the second frame connection portion 163 of the lower elastic member 160.

When the bobbin 110 is moved in the first direction, the first and second frame connection portions 153 and 163 and the bobbin are formed by the first and second escape grooves 112a and 112b of the bobbin 110. Spatial interference with each other of 110 may be avoided, and thus the first and second frame connecting portions 153 and 163 of the upper and lower elastic members 150 and 160 may be elastically deformed more easily.

In another embodiment, the first frame connection portion of the upper elastic member and the bobbin may be designed so as not to interfere with each other, and the bobbin may not have a first escape groove and/or a second escape groove.

At least one groove 105 for arranging the coil 120 may be provided on the outer surface of the bobbin 110.

The coil 120 may be disposed or seated in the groove 105 of the bobbin 110.

For example, the coil 120 may be directly wound or wound in the groove 105 of the bobbin 110 so as to rotate in a clockwise or counterclockwise direction with respect to the optical axis OA.

The shape and number of the grooves 105 of the bobbin 110 may correspond to the shape and number of coils disposed on the outer surface of the bobbin 110. In another embodiment, the bobbin 110 may not have a groove for seating the coil, and the coil 120 may be wound directly on the outer surface of the bobbin 110 without the groove or may be wound and fixed.

At least one groove 106 may be formed at the lower end of the outer surface of the bobbin 110, and at least one end or part of the coil 120 (eg, a gaze area) or the other end or another part (eg, a vertical line area) It can be placed in one groove or passed through.

Next, the coil 120 will be described.

The coil 120 may be disposed on the bobbin 110, coupled to or connected to the bobbin 110, or supported by the bobbin 110.

For example, the coil 120 may be disposed on the outer surface of the bobbin 110 and may interact electromagnetically with the magnet 130 disposed on the housing 140. That is, the coil 120 may function as a coil for AF operation. In addition, power may be provided to the coil 120 or a driving signal may be applied to the coil 120 to generate an electromagnetic force by interaction with the magnet 130.

In order to generate an induced voltage (or induced current) by mutual induction with the sensing coil 170, the driving signal provided to the coil 120 may include an AC signal or an AC signal and a DC signal.

For example, the AC signal provided to the coil 120 may be a sine wave or a pulse signal (eg, a PWM signal). For example, the driving signal may be in the form of current or voltage.

For example, the DC signal of the driving signal provided to the coil 120 may move the AF movable part in the optical axis direction by interaction with the magnet 130, and the AC signal of the driving signal interacts with the sensing coil 170 It may be provided to generate an induced voltage (or induced current) by, but is not limited thereto.

The bobbin 110 elastically supported by the upper and lower elastic members 150 and 160 by the electromagnetic force caused by the electromagnetic interaction between the coil 120 and the magnet 130 may move in the optical axis direction or the first direction. , The coil 120 and the magnet 130 may be a “lens driver” that moves the lens.

By controlling the driving signal provided to the coil 120, it is possible to control the movement of the bobbin 110 in the first direction, whereby the auto focusing function can be performed.

The coil 120 may be disposed to surround the outer surface of the bobbin 110 so as to rotate clockwise or counterclockwise around the optical axis. For example, the coil 120 may be disposed or wound in the groove 105 provided on the outer surface of the bobbin 110.

For example, the coil 120 may have a closed curve or a ring shape.

In another embodiment, the coil 120 may be implemented in the form of a coil ring wound in a clockwise or counterclockwise direction around an axis perpendicular to the optical axis, and the number of coil rings may be the same as the number of magnets 130. , But is not limited thereto.

The coil 120 may be electrically connected to at least one of the upper or lower elastic members 150 and 160. A driving signal may be applied to the coil 120 through at least one of the upper or lower elastic members 150 and 160. For example, a driving signal may be provided to the coil 120 through the two lower elastic members 160-1 and 160-2.

4A and 4B, the housing 140 supports the magnet 130 and accommodates the bobbin 110 inside so that the bobbin 110 can move in the first direction.

The housing 140 may have a hollow column shape as a whole.

The housing 140 may have an opening (or hollow) for accommodating the bobbin 110, and the opening of the housing 140 may be a through hole passing through the housing 140 in the optical axis direction.

The housing 140 may include side portions 141-1 to 141-4, or “first sides”) and corner portions 142-1 to 142-4, or “second sides”).

For example, the housing 140 includes a plurality of side portions 141-1 to 141-4 and corner portions 142-1 to 142-4 forming a polygonal (eg, square or octagonal) or circular opening can do. At this time, the corner portions of the housing 140 may be expressed as “columns”.

For example, the side portions 141-1 to 141-4 of the housing 140 may be disposed at positions corresponding to the side plates 302 of the cover member 300, and the side portions of the housing 140 corresponding to each other Side plates of the cover member 300 may be parallel.

For example, the side portions 141-1 to 141-4 of the housing 140 may be portions corresponding to the sides of the housing 140, and the corner portions 142-1 to 142-4 of the housing 140 are It may be a part corresponding to the corner of the housing 140.

The inner surface of each of the corner portions 142-1 to 142-4 of the housing 140 may be a flat surface, a chamfer, or a curved surface.

A magnet 130 may be disposed or installed on at least one of the side portions 141-1 to 141-4 of the housing 140. For example, the first to fourth side portions 141-1 to 141-4 of the housing 140 are provided with a seating portion 141a on which the magnets 130-1 to 130-4 are seated, arranged, or fixed. Can be.

In FIG. 4A, the seating portion 141a may be in the form of an opening or a through hole penetrating the side portions 141-1 to 141-4 of the housing 140, but is not limited thereto, and in another embodiment, a groove or a groove shape May be.

The housing 140 may include a support portion 18 adjacent to the seating portion 141a to support the edge of the first surface of the magnet 130 facing the coil 120.

The support part 18 may be positioned adjacent to the inner surface of the housing 140 and may protrude in a horizontal direction with respect to the side surface of the seating part 141a. Also, for example, the support 18 may include a tapered portion or an inclined surface. In another embodiment, the housing 140 may not include the support 18.

In addition, a guide groove 148 for inserting, fastening, or coupling the protrusions (eg, 216a to 216d) of the base 210 to the lower portion of the outer surface of the corner portions 142-1 to 142-4 of the housing 140 Can be provided.

In order to prevent the cover member 300 from directly colliding with the inner surface of the upper plate, a stopper 143 may be provided on the upper surface, the upper surface, or the upper surface of the housing 140. Here, the stopper 143 may be represented by replacing it with “boss” or “protrusion”.

For example, the stopper 143 may be formed at the corner portions of the housing 140, but is not limited thereto, and in another embodiment, the stopper 143 is formed at at least one of the side portions and corner portions of the housing 140 Can be.

For example, the upper surface of the stopper 143 of the housing 140 may contact the inner surface of the upper plate 301 of the cover member 300, but is not limited thereto. In other embodiments, both may not be in contact.

In addition, at least one first coupling portion 144 for coupling the outer frame 152 of the upper elastic member 150 may be provided on an upper surface, an upper end, or an upper portion of the housing 140. In addition, at least one second coupling portion 147 for coupling the outer frame 162 of the lower elastic member 160 may be provided at a lower surface, a lower portion, or a lower portion of the housing 140.

4A and 4B, each of the first and second coupling portions 144 and 147 of the housing 140 has a protrusion shape, but is not limited thereto, and in other embodiments, the first and second coupling portions 144 and 147 ) At least one may have a groove or a flat shape.

For example, the guide groove 148 of the housing 140 and the protrusions (eg, 216a to 216d) of the base 210 may be combined with an adhesive (not shown) such as silicone or epoxy, and the housing 140 is a base It can be combined with 210.

Next, the magnet 130 will be described.

At the initial position of the AF movable part (eg, the bobbin 110), the magnet 130 corresponds to or faces the coil 120 in a direction perpendicular to the optical axis OA, so that the sides 141-1 to 141 of the housing 140 Although it may be disposed at -4), it is not limited thereto. In another embodiment, it may be disposed at the corners 142-1 to 142-4 of the housing 140.

Here, the initial position of the AF movable unit (eg, the bobbin 110) is the initial position of the AF movable unit or the upper and lower elastic members 150 and 160 in a state in which no power or driving signal is applied to the coil 120. As the AF movable part is elastically deformed only by the weight of the AF movable part, it may be a position where the AF movable part is placed.

In addition, the initial position of the AF movable unit (eg, bobbin 110) is when gravity acts from the bobbin 110 to the base 210, or vice versa, when the gravity acts from the base 210 to the bobbin 110. It may be a position where the AF movable part of the is placed.

For example, the AF movable unit may include components mounted on the bobbin 110 and the bobbin 110. For example, the AF movable unit may include a bobbin 110 and a coil 120, and when a lens or a lens barrel is mounted, may include this.

According to the embodiment, by the interaction between the coil 120 and the magnet 130, the AF movable unit may perform bidirectional driving in which the AF movable unit can move forward (or upper) and rear (or lower) at the initial position of the AF movable unit. In another embodiment, a unidirectional drive in which the AF movable unit moves forward from the initial position may be performed.

At the initial position of the AF movable part, the magnet 130 may be disposed on the seating part 141a of the housing 140 to overlap the coil 120 in a direction perpendicular to the optical axis direction.

In another embodiment, the mounting portions 141a may not be formed on the side portions 141-1 to 141-4 of the housing 140, and the magnet 130 may be formed on the side portions 141-1 to 141-4 of the housing 140. 141-4) may be disposed on the outer side or the inner side.

In the embodiment, the magnet 130 includes first to fourth magnets 130-1 to 130-4 disposed on the first to fourth side portions 141-1 to 1 141-4 of the housing 140. Including, but not limited to this, the number of magnets 130 may be two or more. For example, another embodiment may include two magnets disposed on two sides of the housing 140 facing each other.

Each of the magnets 130-1 to 130-4 has a shape corresponding to the outer surface of the side portions 141-1 to 141-4 of the housing 140, for example, a polyhedron (eg, a hexahedron, a rectangular parallelepiped). It may have a shape, but is not limited thereto.

Each of the magnets 130-1 to 130-4 may be a single-pole magnetized magnet having two different polarities and an interface naturally formed between the different polarities.

For example, each of the magnets 130-1 to 130-4 may be a single-pole magnetized magnet disposed such that a first surface facing the coil 120 is an N pole, and a second surface opposite to the first surface is an S pole. However, it is not limited thereto, and the N pole and the S pole may be opposite.

In another embodiment, in order to improve the electromagnetic force, each of the magnets 130-1 to 130-4 may be an anode magnetized magnet divided into two in a direction perpendicular to the optical axis. At this time, each of the magnets 130-1 to 130-4 may be implemented with ferrite, alnico, rare earth magnets, etc., but is not limited thereto.

When the magnets 130-1 to 130-4 are positively magnetized, each of the magnets 130-1 to 130-4 is a first magnet part, a second magnet part, and a first magnet part and a second magnet part. It may include a partition wall disposed between.

The first magnet portion may include an N-pole, an S-pole, and a first interface between the N-pole and the S-pole. In this case, the first interface may include a section having almost no polarity as a part that does not substantially have magnetism, and may be a part naturally generated to form a magnet composed of one N pole and one S pole.

The second magnet portion may include an N-pole, a S-pole, and a second interface between the N and S poles. In this case, the second interface may include a section having almost no polarity as a part that does not substantially have magnetism, and may be a part naturally generated to form a magnet composed of one N pole and one S pole.

The partition wall separates or isolates the first magnet part and the second magnet part, and may be a part that does not substantially have magnetism and has almost no polarity. For example, the partition wall may be a non-magnetic material or air. For example, the partition wall may be expressed as a "Neutral Zone" or a "Neutral Zone".

The partition wall is a portion artificially formed when magnetizing the first magnet portion and the second magnet portion, and the width of the partition wall may be greater than the width of each of the first and second boundary surfaces. Here, the width of the partition wall may be a length of the partition wall in a direction from the first magnet part to the second magnet part.

The first surface of each of the magnets 130-1 to 130-2 may be formed as a flat surface, but is not limited thereto, and the first surface of each of the magnets 130-1 to 130-2 is a curved surface or an inclined surface , Or may include a tapered portion. For example, the first surface of each of the magnets 130-1 to 130-4 may be an outer surface of the bobbin 110 or/and a surface facing the coil 120.

Next, the base 210, the upper elastic member 150, the lower elastic member 160, the sensing coil 170, and the circuit board 180 will be described.

5 is a perspective view of the base 210, FIG. 6 is a perspective view of the lower elastic member 160, FIG. 7A is an enlarged perspective view of the circuit board 180, and FIG. 8 is the base 210 and the circuit board 180 9 is a perspective view of the base 210, the lower elastic member 160, the sensing coil 170, and the circuit board 180, FIG. 10A is a cross-section in the AB direction of FIG. 2, and FIG. 10B is 2 is a cross-section in the CD direction, FIG. 11A is a cross-section in the EF direction of FIG. 9, FIG. 11B is a cross-sectional view in the GH direction of FIG. 9, and FIG. 12 is a base 210, a sensing coil 170, and a circuit board. It is a plan view of 180. In FIG. 12, the sensing coil 170 is shown to be visible.

5 to 12, the base 210 is coupled to the housing 140, and together with the cover member 300, a space for accommodating the bobbin 110 and the housing 140 may be formed.

The base 210 may have an opening 21 corresponding to the opening of the bobbin 110 or/and the opening of the housing 140, and has a shape that matches or corresponds to the cover member 300, for example, a square shape. Can be

The base 210 may include a step 211 at the lower end of the outer surface of the base 210 so that the adhesive may be applied when the cover member 300 is adhesively fixed. In this case, the stepped jaw 211 may guide the cover member 300 coupled to the upper side, and may face the lower end of the side plate 302 of the cover member 300. An adhesive member or/and a sealing member may be disposed or applied between the lower end of the side plate 302 of the base 210 and the stepped portion 211 of the base 210.

The base 210 may be disposed under the bobbin 110 and the housing 140.

For example, the base 210 may be disposed under the lower elastic member 160.

The base 210 includes side portions 218a to 218d corresponding to or opposite to the side portions 141-1 to 141-4 of the housing 140 in the direction of the optical axis OA, and corner portions 142- of the housing 140. Corner portions 219a to 219d corresponding to or aligned with 1 to 142-4) may be included.

For example, the side portion 218a of the base 210 may include a flat outer surface, and the corner portion 219a of the base 210 may include a curved outer surface.

The corner portion (eg, 219a) of the base 210 may connect two adjacent sides (eg, 218a and 218c) of the base 210 to each other, and may be located at a corner or corner of the base. have.

At least one protrusion 216a to 216d protruding toward the housing 140 may be formed on the upper surface of the base 210. At least one protrusion may be disposed on at least one of the corner portions of the base 210.

For example, the base 210 may include protrusions 216a to 216d protruding a predetermined height upward from each of the four corners or corner portions 219a to 219d. Here, the protrusions 216a to 216d of the base 210 may be represented by replacing them with “columns” or “guide members”.

For example, the protrusions 216a to 216d of the base 210 may have a shape of a polygonal column protruding from the upper surface 211a of the base 210 so as to be perpendicular to the upper surface 211a of the base 210, but are limited thereto. no.

The protrusions 216a to 216d of the base 210 may be inserted, fastened, or coupled to the guide groove 148 of the housing 140 by an adhesive member such as epoxy or silicone. For example, a groove 16 for applying an adhesive member may be formed on the upper surfaces of the protrusions 216a to 216d, and the groove 16 may be omitted in other embodiments.

In addition, a groove 247 for mounting, inserting, or coupling the second coupling portion 147 of the protruding housing 140 may be provided on the upper surface of the base 210. For example, the groove 247 may correspond to or face the second coupling portion 147 of the housing 140 in the optical axis direction, and may be formed in a corner region of the upper surface of the base 210.

In order to arrange the sensing coil 170, a seating groove 201 or a groove may be formed on the outer surface of the base 210.

The mounting groove 201 of the base 210 may have a structure that is depressed from the outer surface of the base 210. The mounting groove 201 of the base 210 may be formed to be spaced apart from each of the upper and lower surfaces of the base 210. Due to this, the sensing coil 170 disposed or wound in the seating groove 201 of the base 201 can be suppressed from being separated from the base 210.

For example, the depth of the mounting groove 201 of the base 210 may be greater than the length in a direction perpendicular to the optical axis of the sensing coil 170, but is not limited thereto, and in other embodiments, both may be the same. . Accordingly, it is possible to prevent the sensing coil 170 from being separated from the base 210.

For example, the first length in the optical axis direction of the sensing coil 170 disposed in the seating groove 201 of the base 210 is less than the second length in the direction perpendicular to the optical axis from the inner peripheral surface of the base 210 It can be small. Accordingly, the height or length of the lens driving apparatus 100 in the optical axis direction may be reduced. In another embodiment, the first length of the sensing coil may be equal to or greater than the second length of the sensing coil.

The seating groove 201 of the base 210 may be recessed from the outer surface of the side portion 218a and the outer surface of the corner portion 219a, and may have a ring shape.

5, 11A, 11B, and 12, the mounting groove 201 of the base 210 includes a first groove 9A and a base formed in the first outer surface S1 of the base 210. A second groove 9B formed in the second outer surface S2 of 210), a third groove 9C formed in the third outer surface S3 of the base 210, and a fourth groove of the base 210 It may include a fourth groove (9D) formed in the outer surface (S4).

For example, the first groove 9A may be formed on the outer surface of the first side portion 218a of the base 210, and the second groove 9B is the outer surface of the second side portion 218b of the base 210 The third groove 9C may be formed on the outer surface of the third side portion 218c of the base 210, and the fourth groove 9D is the fourth side portion 218d of the base 210. ) May be formed on the outer surface.

In addition, the seating groove 210 may further include a corner groove formed on an outer surface of the corner portions 219a to 219d of the base 210 in order to arrange the corner portions of the sensing coil 170.

For example, the seating groove 201 of the base 210 may extend in a closed curve shape or a ring shape along the outer surfaces S1 to S4 of the base 210.

In addition, the base 210 may include a first portion 210a or a lower portion disposed under the seating groove 201, and a second portion 210b disposed above the seating groove 201.

First and second depressions 52a and 52b for arranging the first and second terminals 81 and 82 may be formed on an outer surface of one of the side portions 218a of the base 210. .

In addition, terminals 164-1 and 164-2 of the first and second elastic members 160-1 and 160-2 are disposed on an outer surface of the one 218a among the side portions of the base 210 Third and fourth depressions 52c and 52d to be formed may be formed. For example, the first to fourth depressions 52a to 52d may be formed in the first portion 210a and the second portion 210b of the base 210.

First to fourth depressions 52a to 52d may be formed in the first outer surface S1 of the base 210. For example, first to fourth depressions 52a to 52d may be formed on an outer surface of the first side portion 218a of the base 210.

For example, at least one of the first to fourth depressions 52a to 52d may include an upper opening open to the upper surface of the base 210 and a lower opening open to the lower surface of the base 210.

2 and 6 to 12, the upper elastic member 150 and the lower elastic member 160 are coupled to the bobbin 110 and the housing 140, and elastically support the bobbin 110.

For example, the upper elastic member 150 may be coupled to the upper (or upper surface, or upper end) of the bobbin 110 and/or the upper (or upper surface, or upper end) of the housing 140.

The lower elastic member 160 may be coupled to a lower (or lower or lower) portion of the bobbin 110 and/or to a lower (or lower or lower) portion of the housing 140.

In FIG. 2, the upper elastic member 150 is not separated into a plurality, but is not limited thereto. In another embodiment, the upper elastic member 150 may include a plurality of elastic members spaced apart from each other.

Referring to FIG. 2, the upper elastic member 150 includes a first inner frame 151 coupled to an upper portion of the bobbin 110, a first outer frame 152 coupled to an upper portion of the housing 140, and a first It may include a first frame connector 153 connecting the inner frame 151 and the second outer frame 152. Hereinafter, the inner frame may be represented by replacing it with "inner part", the outer frame may be represented by replacing it with "outer part", and the frame connection part may be represented by replacing it with "connecting part".

The first inner frame 151 of the upper elastic member 150 may be provided with a hole 151a for coupling with the first coupling portion 113 of the bobbin 110, and the first outer frame 152 has a housing A hole 152a for coupling with the first coupling portion 144 of 140 may be provided.

Referring to FIG. 5, the lower elastic member 160 may include a plurality of elastic members divided or separated into two or more, and may be coupled to the bobbin 110. For example, the elastic member may be represented by replacing it with “elastic unit” or “spring”.

For example, the lower elastic member 160 may include first and second elastic members 160-1 and 160-2 spaced apart from each other, and the first and second elastic members 160-1 and 160- 2) can be electrically separated from each other.

The coil 120 may be electrically connected to the first and second elastic members 160-1 to 160-2. For example, one end (or first end) of the coil 120 may be coupled to the first elastic member 160-1 by soldering or a conductive adhesive, and the other end (or second end) of the second coil 120 May be coupled to the second elastic member 160-2.

Each of the first and second elastic members 160-1 and 160-2 has a second inner frame 161 coupled to the lower portion of the bobbin 110 and a second outer frame coupled to the lower portion of the housing 140 ( 162 ), and a second frame connection part 163 connecting the second inner frame 161 and the second outer frame 162.

The second inner frame 161 of the lower elastic member 160 may be provided with a hole 161a for engaging the second coupling portion 117 of the bobbin 110, and the second outer frame 162 has a housing A hole 162a for coupling with the second coupling portion 147 of 140 may be provided.

For example, at one end of the second inner frame 161 of the first elastic member 160-1, a first bonding portion 15a or “first bonding region” to which one end of the coil 120 is coupled is provided. In addition, a second bonding portion 15b (or “second bonding region”) is provided at one end of the second inner frame 161 of the second elastic member 160-2 to couple the other end of the coil 120 Can be.

For example, by soldering or a conductive adhesive member, one end of the coil 120 may be coupled to the first bonding portion 15a of the inner frame 161 of the first elastic member 160-1, and the coil 120 The other end of may be coupled to the second bonding portion 15b of the inner frame 161 of the second elastic member 160-2.

The reason why the first and second bonding portions 15a and 15b are provided in the second inner frame 161 is because the second inner frame 161 is closer to the bobbin 110 than the second outer frame 163, This is to facilitate bonding with the coil 120.

For example, a guide groove 3a for guiding one end and the other end of the coil 120 may be provided in the first and second bonding portions 15a and 15b.

With respect to the above-described first and second bonding portions 15a and 15b, the term "bonding portion" may be used as a pad portion, a connection terminal portion, a solder portion, or an electrode portion.

The upper elastic member 150 and the lower elastic member 160 may be implemented as a leaf spring, but are not limited thereto, and may be implemented as a coil spring or a suspension wire.

Each of the first and second frame connecting portions 153 and 163 may be formed to be bent or curved (or curved) at least one or more times to form a pattern having a predetermined shape. The bobbin 110 may be elastically (or elastically) supported by an upward and/or downward motion of the bobbin 110 in the first direction through a change in position and fine deformation of the first and second frame connection parts 153 and 163.

For example, in order to prevent oscillation when the bobbin 110 moves, a damper (eg, the first escape groove 112a) between the first frame connection portion 153 of the upper elastic member 150 and the upper surface of the bobbin 110 damper) can be arranged. Alternatively, a damper (not shown) may be disposed between the second frame connecting portion 163 of the lower elastic member 160 and the lower surface of the bobbin 110 (eg, the second escape groove 112b).

Or, for example, a damper may be applied to the coupling portion of the bobbin 110 and the housing 140 and the upper elastic member 150, or the coupling portion of the bobbin 110 and the housing 140 and the lower elastic member 160, respectively. I can. For example, the damper may be a gel-like silicone.

For example, the first and second elastic members 160-1 and 160-2 may be separated or spaced apart from each other at the first side portion 141-1 and the second side portion 141-2 of the housing 140, , But is not limited thereto.

The first elastic member 160-1 is connected to the outer surface of the second outer frame 162 of the first elastic member 160-1, and the second outer frame 163 of the first elastic member 160-1 ) May include a first terminal 164-1 that is bent and extended in a direction toward the base 210.

In addition, the second elastic member 160-2 is connected to the outer surface of the second outer frame 162 of the second elastic member 160-2, and the second outer frame of the second elastic member 160-2 ( A second terminal 164-2 may be bent and extended in a direction from 163 to the base 210.

For example, the first terminal 164-1 of the first elastic member 160-1 is the first outer surface S1 of the base 210 in the second outer frame 162 of the first elastic member 160-1 ) Or the outer surface of the first side portion 218a of the base 210 may be extended or bent.

In addition, the second terminal 164-2 of the second elastic member 160-2 is the first outer surface (S1) of the base 210 in the second outer frame 162 of the second elastic member 160-2 Alternatively, it may be extended or bent to the outer surface of the first side portion 218a of the base 210.

For example, the first and second terminals 164-1 and 164-2 of the first and second elastic members 160-1 and 160-2 have a first outer surface S1 of the base 210 ( Alternatively, they may be disposed to be spaced apart from each other (on the outer surface of the first side portion 218a). The first and second terminals 164-1 and 164-2 of the first and second elastic members 160-1 and 160-2 are spaced apart from the first outer surface S1 of the base 210. However, the present invention is not limited thereto, and may be in contact with the first outer surface S1.

For example, the first terminal 164-1 of the first elastic member 160-1 may be disposed, seated, or inserted in the third recessed portion 52c of the base 210. In addition, the second terminal 164-2 of the second elastic member 160-2 may be disposed, seated, or inserted in the fourth recessed portion 52d of the base 210. Here, the terminal 164-1 or 164-2 is the term "connection terminal", "connection terminal", "expansion part", "pad part", "bonding part", "solder part", or "electrode part" It may be represented by replacing it, and the recessed portion 52c or 52d may be represented by replacing it with "groove".

The first and second terminals 164-1 and 164-2 of the first and second elastic members 160-1 and 160-2 may be exposed from the base 210 and the first and second The terminals 164-1 and 164-2 may be electrically separated from each other.

For example, the inner surface of the first terminal 164-1 of the first elastic member 160-1 disposed in the third depression 52c of the base 210 is one surface of the third depression 52c (for example, , The bottom surface), and the outer surface of the first terminal 164-1 of the first elastic member 160-1 may be exposed from the first outer surface S1 of the base 210 . The outer surface of the first terminal 164-1 of the first elastic member 160-1 may be a surface opposite to the inner surface of the first terminal 164-1.

In addition, the inner surface of the second terminal 164-2 of the second elastic member 160-2 disposed in the fourth depression 52d of the base 210 is one surface of the fourth depression 52d (for example, Bottom surface), and the outer surface of the second terminal 164-2 of the second elastic member 160-2 may be exposed from the first outer surface of the base 210. The outer surface of the second terminal 164-2 of the second elastic member 160-2 may be a surface opposite to the inner surface of the second terminal 164-2.

For example, the lower ends of each of the first and second terminals 164-1 and 164-2 of the lower elastic member 160 may be exposed from the lower surface of the base 210, but the present disclosure is not limited thereto. In the lower elastic member 160, the lower ends of each of the first and second terminals 164-1 and 164-2 may not be exposed to the lower surface of the base 210.

The depth of the third and fourth depressions 52c and 52d may be greater than the thickness of the terminals 164-1 and 164-2 of the lower elastic member 160, and the third and fourth depressions 52c and 52d ), the outer surfaces of the terminals 164-1 and 164-2 of the lower elastic member 160 may not protrude out of the recessed portions 52c and 52d, but are not limited thereto, and in other embodiments The outer surfaces of the terminals 164-1 and 164-2 of the elastic member 160 may protrude out of the recessed portions 52c and 52d.

5 and 9, the first elastic member 160-1 and the second elastic member 160-2 may be disposed to face each other in a first axis direction (eg, an X axis direction).

For example, the first elastic member 160-1 is one side of the first side portion 218a of the base 210, the first corner portion of the base 210, the third side portion 218c of the base 210, and the base It may be disposed on one side of the fourth corner portion 219d of 210 and the second side portion 218b of the base 210.

For example, the second side portion 218b of the base 210 may face the first side portion 218a of the base 210 in the second axis direction (eg, Y axis direction), and the third side portion 218b of the base 210 The side portion 218c may be disposed between the first side portion 218a and the second side portion 218b of the base 210, and the first corner portion 218b1 of the base 210 is the first The side portion 218a and the third side portion 218c may be connected, and the third corner portion 219c of the base 210 has a second side portion 218b of the base 210 and a fourth side portion of the base 210 ( 218d) can be connected. The second axis direction may be perpendicular to the first axis direction.

For example, the second elastic member 160-2 is the other side of the first side portion 218a of the base 210, the second corner portion 219b of the base 210, and the fourth side portion 218d of the base 210 ), the third corner portion 219c of the base 210, and the second side portion 218b of the base 210 may be disposed on the other side.

For example, the fourth side portion 218d of the base 210 may face the third side portion 218c of the base 210 in the first axis (X-axis) direction, and the second corner portion of the base 210 ( 219b) may connect the first side portion 218a of the base 210 and the fourth side portion 218d of the base 210, and the fourth corner portion 219d of the base 210 The second side portion 218b and the third side portion 218c of the base 210 may be connected.

For example, the first and second terminals 164-1 and 164-2 of the lower elastic member 160 and the circuit board 180 may be disposed on the first side portion 218a of the base 210.

For example, the circuit board 180 may include a first outer surface S1 of the base 210 or a portion 8b1 disposed on an outer surface of the first side portion 218a of the base 210.

The circuit board 180 may include a portion 8c1 extending to and disposed of the first corner portion 218b1 of the base 210. In addition, the circuit board 180 may include a portion 8c2 extending and disposed to the second corner portion 219b of the base 210.

The first and second terminals 164-1 and 164-2 of the lower elastic member 160 are external wirings or external elements by a conductive adhesive member (eg, soldering) to supply power or driving signals from the outside. Can be electrically connected to the field.

If the solder bonded to the first and second terminals 164-1 and 164-2 of the lower elastic member 160 protrudes outside the outer surface of the base 210, the lower elastic member 160 Contact or collision between the solder bonded to the first and second terminals 164-1 and 164-2 and the cover member 300 may be prevented, and thus an electrical short or disconnection may occur. The embodiment secures a sufficient depth of the depressions 52c and 52d so that the solder bonded to the terminals 164-1 and 164-2 of the lower elastic member 160 does not protrude out of the outer surface of the base 210, The embodiment can prevent the electrical short circuit or disconnection described above.

In addition, the first and second terminals 164-1 and 164-2 of the lower elastic member 160 are adjacent to the first side part 141-1 or/and the first side part 141-1 of the housing 140. It may be disposed on the second outer frame 162 of the first and second elastic members 160-1 and 160-2 disposed under the corner portions 142-1 and 142-2 of the housing 140.

The first and second terminals 164-1 and 164-2 of the first and second elastic members 160-1 and 160-2 may be electrically connected to the coil 120, and the first and second elastic members Power or a driving signal for driving the coil 120 may be provided to the first and second terminals 164-1 and 164-2 of the members 160-1 and 160-2.

In FIG. 6, the first terminal 164-1 of the lower elastic member 160 is formed integrally with the first elastic member 160-1, and the second terminal 164-2 of the lower elastic member 160 is Although formed integrally with the second elastic member 160-2, it is not limited thereto. In another embodiment, the separate first terminal may be disposed on the first outer surface S1 of the base 210 in a configuration independent from the first elastic member, and the separate second terminal is configured independently from the first elastic member. It may be disposed on the first outer surface S1 of the base 210, and a first elastic member (eg, a second outer frame) and a separate first terminal may be connected by a conductive adhesive (eg, solder), A second elastic member (eg, a second outer frame) and a separate second terminal may be connected by a conductive adhesive (eg, solder).

Next, the circuit board 180 will be described.

7A to 9, the circuit board 180 may be disposed on the base 210, coupled to or connected to the base 210, or supported by the base 210. For example, the circuit board 180 may be disposed on the first side portion 218a of the base 210. Alternatively, for example, the circuit board 180 may be disposed on the first side portion 218a, the first corner portion 219a, and the second corner portion 219b of the base 210.

In addition, the circuit board 180 may include portions 8b1, 9a1, and 9a2 disposed on the first outer surface S1 of the base 210.

The circuit board 180 may be a printed circuit board (PCB) or a flexible printed circuit board (FPCB).

Referring to FIG. 7A, the circuit board 180 may include a body 10A and an extension part 10B. The body 10A includes first and second pads P1 and P2 for electrically connecting the sensing coil 170, and first and second terminals 81 and 82, which are external connection terminals. I can. Each of the first and second pads P1 and P2 may be electrically connected to a corresponding one of the first and second terminals 81 and 82. For example, a circuit pattern or wiring for electrically connecting the first and second pads P1 and P2 and the first and second terminals 81 and 82 is formed on the body 10A of the circuit board 180 Can be.

For example, the circuit board 180 may include a body 10A disposed on the first side portion 218a of the base 210 and an extension portion 10B extending from the body 10A.

A portion 8a1 of the body 10A of the circuit board 180 may be exposed from the upper surface of the base 210 and may include first and pads P1 and P2.

In addition, the other part (8b1) of the body (10A) may be bent from a part of the body (10A) to the first outer surface (S1) of the base 210 or the outer surface of the first side (218a) of the base (210). In addition, at least one area of the other part 8b1 of the body 10A may be exposed as an outer surface or a first outer surface S1 of the first side portion 218a of the base 210. In addition, another portion 8b1 of the body 10A may include first and second pads P1 and P2.

In addition, the extension part 10B may extend from the other part 8b1 of the body 10A of the circuit board 180 toward the corner part 216a or/and 216b of the base 210.

The body 10A of the circuit board 180 may include a first portion 8a1 and a second portion 8b1.

The first portion 8a1 of the body 10A may be exposed from the upper surface of the base 210.

In another embodiment, at least a portion of the first portion 8a1 of the body 10A may not be exposed from the upper surface of the base 210, and may be disposed within the base 210.

The second part 8b1 of the body 10A may be connected to one end of the first part 8a1, and the bottom direction of the base 210 from one end of the first part 8a1 or the first other part of the base 210 It can be bent to the side (S1).

For example, the second portion 8b1 of the body 10A may be bent and extended to the first outer surface S1 of the base 210 or the outer surface of the first side portion 218a of the base 210.

First and second terminals 81 and 82 may be provided on the second portion 8b1 of the body 10A. For example, the first and second terminals 81 and 82 of the circuit board 180 may be disposed on the first outer surface S1 of the base 210 or the outer surface of the first side portion 218a of the base 210. I can.

For example, the body 10A may include a bent portion 8c1 connecting the first portion 8a1 and the second portion 8b1. In FIG. 7A, the bent portion 8c1 may have an angular shape, but is not limited thereto, and may be a rounded shape in another embodiment.

For example, the inner angle between the first portion 8a1 and the second portion 8b1 may be a right angle, but is not limited thereto. In another embodiment, the inner angle may be an acute angle or an obtuse angle.

For example, the second portion 8b1 of the body 10A may be bent downward in a region of the first portion 8a1 to extend.

The body 10A may include an extension portion 8d1 extending in a direction from one side of the first portion 8a1 toward the first corner portion 219a of the base 210, and the first portion 8a1 It may include an extension portion 8d2 extending in a direction from the other side toward the second corner portion 219b of the base 210. For example, the extension portions 8d1 and 8d2 of the first portion 8a1 may extend in opposite directions.

The extended portions 8d1 and 8d2 of the first portion 8a1 may be exposed from the upper surface of the base 210.

For example, the extension portions 8d1 and 8d2 of the first portion 8a1 may be disposed on the upper surface of the first side portion 218a of the base 210, but the present invention is not limited thereto. In another embodiment, the extension portions 8d1 and 8d2 may be disposed on the top surface of the first side portion 218a of the base 210 and the top surface of the first and second corner portions 219a and 219b.

The first and second pads P1 and P2 may be provided on the first portion 8a1 of the body 10A of the circuit board 180. For example, the first and second pads P1 and P2 may be disposed on an upper surface of the first side portion 218a of the base 210.

For example, the first pad P1 may be disposed on any one extension 8d1 of the first portion 8a1 of the body 10A, and the second pad P2 is the first portion of the body 10A. It may be disposed on the other extension portion 8d2 of (8a1).

The sensing coil 170 may be coupled to one end of the sensing coil 170 to the first pad P1 of the circuit board 180 by soldering or a conductive adhesive member, and the sensing coil 170 to the second pad P2 of the circuit board 180. ) Can be connected to the other end.

At least one through hole 37A and 37B for coupling to the base 210 may be formed in the first portion 8a1 of the body 10A of the circuit board 180.

For example, the body 10A may have through-holes 37A and 37B penetrating the extended portions 8d1 and 8d2 of the first portion 8a1. The through holes 37A and 37B may be coupled to the protrusions 22a and 22b formed on the first side portion 218a of the base 210.

In another embodiment, each of the first and second terminals 81 and 82 may have a groove-shaped coupling portion for coupling with the base 210 in place of the first and second through holes 37A and 38B. have.

The extended portions 9a1 and 9a2 of the circuit board 180 extend to the second portion 8b1 of the body 10A, and the first outer surface S1 of the base 210 or the first side of the base 210 It may be disposed on the outer surface of 218a.

Referring to FIG. 9, at least a portion of the extension portions 9a1 and 9a2 of the circuit board 180 are first and second terminals 164-1 and 164-2 and the base 210 of the lower elastic member 160. ) May be disposed between the first portion 170-1 of the sensing coil 170 disposed on the outer surface (or the first outer surface S1) of the first side portion 218a.

A circuit pattern or wiring may not be formed on the extended portions 9a1 and 9a2 of the circuit board 180, and sensing with the first and second terminals 164-1 and 164-2 of the lower elastic member 160 The first portion 170-1 of the coil 170 serves to prevent contact with each other. Accordingly, it is possible to prevent an electrical short from occurring between the first and second terminals 164-1 and 164-2 of the lower elastic member 160 and the sensing coil 170.

That is, the extension parts 9a1 and 9a2 insulate between the first and second terminals 164-1 and 164-2 of the lower elastic member 160 and the first part 170-1 of the sensing coil 170 It may be an insulating part to make. Accordingly, the extension portions 9a1 and 9a2 may be formed of an insulating member.

At least a portion of the extension portions 9a1 and 9a2 of the circuit board 180 may be disposed in the groove 201 of the base 210, which will improve the bonding force between the extension portions 9a1 and 9a2 and the base 210. It can be, there is an effect of suppressing the movement of the extension (9a1, 9a2) due to impact or the like.

In another embodiment, the extension portions 9a1 and 9a2 of the circuit board 180 are not disposed within the groove 201 of the base 210, but a portion of the groove 201 of the base 210 or the first groove 9A ) May be disposed on the first outer surface S1 of the base 210 so as to cover a part of it.

The length (H1, see FIG. 7A) of the extension portions 9a1 and 9a2 of the circuit board 180 in the optical axis direction is equal to the length H2 of the first groove 9A of the base 210 in the optical axis direction, or It may be small (H1≤H2). Alternatively, in another embodiment, the length in the optical axis direction of the extension portions 9a1 and 9a2 of the circuit board 180 may be greater than the length in the optical axis direction of the first groove 9A of the base 210.

For example, the extended portions 9a1 and 9a2 of the circuit board 180 may be disposed in the first groove 9A of the base 210, and outside the first portion 170-1 of the sensing coil 170. Can be placed.

The extended portions 9a1 and 9a2 of the circuit board 180 are the first and second terminals of the sensing coil 170 and the first and second elastic members 160-1 and 160-2 in a direction perpendicular to the optical axis They may overlap with 164-1 and 164-2.

For example, the extended portions 9a1 and 9a2 of the circuit board 180 may be lower than the upper surface of the base 210 and higher than the lower surface of the base 210.

In addition, for example, the extension portions 9a1 and 9a2 of the circuit board 180 may include first and second terminals 164-1 and 164-2 of the first and second elastic members 160-1 and 160-2. ) And may be positioned higher than the lower surfaces of the first and second terminals 164-1 and 164-2. At this time, the upper end of the first and second terminals 164-1 and 164-2 is a portion in contact with the second outer frame 162 of the first and second elastic members 160-1 and 160-2. I can.

The extension parts 9a1 and 9a2 are the first part 170-1 of the sensing coil 170 and the first and second terminals 164 of the first and second elastic members 160-1 and 160-2. -1, 164-2), a first region Q1, a second region connecting one side of the first region Q1 and the second portion 8b1 of the body 10A of the circuit board 180 A third area Q3 extending from the other side of the first area Q1 may be included.

For example, the first region Q1 of the extension parts 9a1 and 9a2 is the first portion 170-1 of the sensing coil 170 and the first and second elastic members 160-1 in a first horizontal direction. 160-2) may overlap with the first and second terminals 164-1 and 164-2.

For example, the first horizontal direction (eg, Y-axis direction) is a direction perpendicular to the optical axis and perpendicular to the first outer surface S1 of the base 210, or perpendicular to the optical axis OA and the first of the base 210 It may be a direction from the outer surface S1 to the second outer surface S2.

In addition, for example, the second region Q2 and the third region Q3 of the extension portions 9a1 and 9a2 are in a first horizontal direction. The first and second elastic members 160-1 and 160-2 are And the second terminals 164-1 and 164-2 may not overlap.

The length of the extension parts 9a1 and 9a2 in the second horizontal direction (eg, the X-axis direction) is the first and second terminals 164 of the first and second elastic members 160-1 and 160-2. -1, 164-2) may be greater than the lengths in the second horizontal direction, but are not limited thereto.

For example, the second horizontal direction is perpendicular to the optical axis and parallel to the first outer surface (S1) of the base 210, or perpendicular to the optical axis (OA) and the third outer surface (S3) of the base 210 4 It may be a direction toward the outer surface S4. Alternatively, the second horizontal direction may be a direction perpendicular to the first horizontal direction.

The circuit board 180 includes a first extension portion 9a1 extending from one side of the second portion 8b1 of the body 10A and a second extension portion 9a1 extending from the other side of the second portion 8b1 of the body 10A. It may include an extension (9a2).

For example, the first extension part 9a1 may extend in a direction from one side of the second part 8b1 of the body 10A toward the first corner part 216a of the base 210, and the second extension part 9a2 may extend in a direction from the other side of the second portion 8b1 of the body 10A toward the second corner portion 216b of the base 210. For example, the first extension portion 9a1 and the second extension portion 9a2 may extend in opposite directions based on the body 10A, but are not limited thereto.

For example, the first and second extensions 9a1 and 9a2 may have symmetrical shapes with respect to the body 10A, but are not limited thereto. In addition, the first extension portion 9a1 and the second extension portion 9a2 may be symmetrically disposed with respect to the body 10A, but are not limited thereto.

The first and second terminals 164-1 and 164-2 of the elastic member 160 may be disposed on both sides of the first side portion 218a of the base 210. The first and second terminals 81 and 82 of the circuit board 180 may be disposed on the outer surface of the first side portion 218a of the base 210, and the first and second terminals of the lower elastic member 160 It may be disposed between the two terminals 164-1 and 164-2.

In addition, the first portion 8a1 of the circuit board 180 and the extended portions 8d1 and 8d2 of the first portion 8a1 may be positioned above the sensing coil 170.

5 and 9, the outer frame 162 of the first and second elastic members 160-1 and 160-2 may be disposed on the first surface 18a of the upper surface of the base 210, The first portion 8a1 of the circuit board 180 and the extension portions 8d1 and 8d2 of the first portion 8a1 may be disposed on the second surface 18b of the upper surface of the base 210.

The first surface 18a and the second surface 18b of the upper surface of the base 210 may have a step DP in the optical axis direction. For example, the first surface 18a of the upper surface of the base 210 may be positioned higher than the second surface 18b. For example, the height of the first surface 18a of the upper surface of the base 210 with respect to the lower surface of the base 210 may be greater than the height of the second surface 18b.

For example, the first portion 8a1 of the circuit board 180 and the extended portions 8d1 and 8d2 of the first portion 8a1 are outer frames 162 of the first and second elastic members 160-1 and 160-2. It can be located lower than the upper surface of ). Accordingly, spatial interference between the two can be avoided, and electrical short between the two due to soldering can be prevented.

In addition, the first part 8a1 and the first and second extension parts 8d1 and 8d2 of the circuit board 180 are in a direction perpendicular to the optical axis, and the sensing coil 170 (or the ring-shaped part of the sensing coil 170) And may not overlap.

In addition, at least one of the first portion 8a1 and the first and second extension portions 8d1 and 8d2 of the circuit board 180 is a sensing coil 170 (or a ring-shaped portion of the sensing coil 170) in the optical axis direction. ), but is not limited thereto. In another embodiment, at least one of the first portion 8a1 and the first and second extension portions 8d1 and 8d2 of the circuit board 180 is sensed in the optical axis direction. It may not overlap with the coil 170 (or the ring-shaped part of the sensing coil 170).

In addition, the first and second terminals 164-1 and 164-2 of the lower elastic member 160 and the first and second terminals 81 and 82 of the circuit board 180 are sensing coils in the optical axis direction. It may not overlap with 170 (or a ring-shaped portion of the sensing coil 170).

For example, the second portion 8b1 of the circuit board 180 and the first and second terminals 164-1 and 164-2 of the lower elastic member 160 may be located outside the sensing coil 170. I can. Here, the outer side of the sensing coil 170 may be an opposite side to the side where the center A1 of the base 210 is positioned with respect to the sensing coil 170.

In addition, in the first and second terminals 81 and 82, the terminal may be used in place of the terms "pad", "pad part", "connection terminal part", "solder part", or "electrode part". .

The first terminal 164-1 of the first elastic member 160-1, the second terminal 164-2 of the second elastic member 160-2, and the second portion 8b1 of the circuit board 180 ) May be disposed on either side of the base 210 (eg, 218a) or on an outer surface (eg, S1) of the base 210. Accordingly, the first and second terminals 164-1 and 164-2 of the lower elastic member 160 and the first and second terminals 81 and 82 of the circuit board 180 and an external device ( For example, when soldering for electrical connection between circuit boards), it is possible to facilitate and simplify the soldering operation.

For example, the first and second terminals 81 and 82 of the circuit board 180 are disposed in the space between the first terminal 164-1 and the second terminal 164-2 of the lower elastic member 160 Or can be arranged.

For example, when the first outer surface S1 of the base 210 is viewed from the front, the first elastic member 160-in the direction from the first corner part 219a of the base 210 to the second corner part 219b 1) of the first terminal 164-1, the first terminal 81 of the circuit board 180, the second terminal 82 of the circuit board 180, and the second elastic member 160-2. The two terminals 82 may be sequentially disposed, but are not limited thereto. In other embodiments, they may be arranged in an order different from the above order.

Next, the cover member 300 will be described.

The cover member 300 includes a bobbin 110, a coil 120, a magnet 130, a housing 140, an upper elastic member 150, and a lower elastic member 160 in an accommodation space formed together with the base 210. , The first and second sensing coils 170A and 170B, and the circuit board 180 are accommodated.

The cover member 300 has an open lower portion and may be in a box shape including an upper plate 301 and side plates 302, and a lower end of the side plates 302 of the cover member 300 is a stepped portion of the base 210 Can be combined with (211). When viewed from the top, the shape of the upper plate 301 of the cover member 300 may be a polygon, for example, a square or an octagon.

The upper plate 301 of the cover member 300 may be provided with an opening (or a hollow) for exposing a lens (not shown) 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, but may be formed of a magnetic material to function as a yoke.

The cover member 300 may include at least one protrusion 303 extending from a region adjacent to the opening formed in the upper plate 301 in the direction of the upper surface of the bobbin 110.

At least one protrusion 303 of the cover member 300 may be disposed or inserted into a groove 119 provided on an upper surface of the bobbin 110. When driving the AF, the protrusion 303 of the cover member 300 can contact the bottom surface of the groove 119 of the bobbin 110, and the protrusion 303 allows the bobbin 110 to move upward. It can also act as a stopper to limit within a set range. Alternatively, in another embodiment in which the magnet is disposed at the corner of the housing, at least one protrusion of the cover member 300 may function as a yoke.

Next, the sensing coil 170 will be described.

The sensing coil 170 may be disposed under the lower elastic member 160 and may be disposed on the base 210.

For example, the sensing coil 170 may be disposed to be wound around the outer surface of the base 210 in a clockwise or counterclockwise direction with respect to the optical axis OA. The sensing coil 170 is for sensing the displacement of the AF movable part, and the coil 120 and the sensing coil 170 may constitute a "sensing part" for sensing the displacement of the AF movable part.

For example, the sensing coil 170 may be disposed in the seating groove 201 provided on the outer surface of the base 210. For example, the sensing coil 170 may be disposed between the upper and lower surfaces of the base 210.

For example, the sensing coil 170 includes the first and second terminals 164-1 and 164-2 of the lower elastic member 160 and the first and second terminals 81 and 82 of the circuit board 180. ) Can be placed away from.

Also, for example, the sensing coil 170 may be spaced apart from the circuit board 180 and may be spaced apart from the cover member 300, but is not limited thereto. In another embodiment, the sensing coil 170 may be in contact with the circuit board 180.

The circuit board 180 may be spaced apart from the cover member 300, but is not limited thereto. In another embodiment, the circuit board 180 and the cover member 300 may contact each other. Alternatively, an adhesive member or a shielding member may be disposed between the circuit board 180 and the cover member 300 or between the circuit board 180 and the sensing coil 170.

The sensing coil 170 may generate an induced voltage due to mutual induction of the coil 120.

For example, the ring portion of the sensing coil 170 in the optical axis direction may at least partially overlap with the ring portion of the coil 120, but is not limited thereto. In another embodiment, the ring portion of the sensing coil in the optical axis direction The (ring) portion may not overlap with the ring portion of the coil 120.

The sensing coil 170 may have a closed curve shape surrounding the outer surface of the base 210, for example, a ring shape. For example, the sensing coil 170 may have a ring shape wound so as to rotate clockwise or counterclockwise with respect to the optical axis OA.

At least a portion of the sensing coil 170 may overlap with the magnet 130 in the optical axis direction, but is not limited thereto, and in another embodiment, both may not overlap with each other in the optical axis direction.

The sensing coil 170 may be an AF movable unit, for example, an induction coil for detecting the position or displacement of the bobbin 110. For example, the sensing coil 170 may be implemented in the form of a wire, but is not limited thereto. In another embodiment, the sensing coil 170 may be implemented in the form of an FPCB or a fine pattern (FP) coil.

For example, when the AF movable part is moved by the interaction between the coil 120 and the magnet 130 provided with the driving signal, the induced voltage (or induced current) by the interaction between the coil 120 and the sensing coil 170 Can occur. The magnitude of the induced voltage (or induced current) may be based on the displacement of the AF movable unit, and the induced voltage (or induced current) of the sensing coil 170 is the first terminal 81 and the second terminal of the circuit board 180 It can be output through the terminal 82.

The controller 410 of the camera module 200 or the controller 780 of the optical device 200A are provided through the first and second terminals 81 and 82 of the circuit board 180 of the lens driving apparatus 100 The displacement of the AF moving part can be detected by using the induced voltage (or induced current).

The coil 120 is manufactured to receive a driving signal or power through the first and second terminals 164-1 and 164-2 of the first and second elastic members 160-1 and 160-2. It may be electrically connected to the first and second elastic members 160-1 and 160-2.

In addition, in order to reduce the output and reduce the effect of noise, the sensing coil 170 may be electrically connected to the first and second pads P1 and P2 of the circuit board 180. An induced voltage (or induced current) may be output through the first and second terminals 81 and 82. This means that the resistance of each of the first and second terminals 81 and 82 of the circuit board 180 may be smaller than the resistance of each of the first and second elastic members 160-1 and 160-2, and an electrical signal This is because the circuit board 180 has a shorter transmission path than the first and second elastic members 160-1 and 160-2.

In another embodiment, the sensing coil 170 may be electrically connected to the first and second elastic members 160-1 and 160-2, and the first and second elastic members 160-1 and 160-2 ), the induced voltage (or induced current) of the sensing coil 170 may be output through the first and second terminals 164-1 and 164-2, and the coil 120 is It may be electrically connected to the first and second pads P1 and P2, and a driving signal or power is provided to the coil 120 through the first and second terminals 81 and 82 of the circuit board 180 It could be.

7B is a perspective view of a circuit board 180A according to another embodiment.

The same reference numerals as in Fig. 7A denote the same configuration, and the description of the same configuration is simplified or omitted.

The circuit board 180A of FIG. 7B may have a structure in which the first and second extension parts 9a1 and 9a2 are omitted from the circuit board 180 of FIG. 7A.

As shown in FIG. 7B, the circuit board 180A is electrically connected to the outside and the first and second pads P1 and P2 coupled to the sensing coil 170 or the coil 120 by soldering or a conductive adhesive member. Except for the first and second terminals 81 and 82 for, since they are coated or coated with an insulating material, it is possible to prevent the risk of an electrical short circuit with the lower elastic member 160. You can get the effect. This effect can be applied equally to the circuit board 180 according to the embodiment of FIG. 7A.

In FIG. 12, the center A1 of the base 210 and the center A2 of the sensing coil 170 disposed on the base 210 are shown.

11A and 12, the center A2 of the ring portion of the sensing coil 170 may be aligned with the center A1 of the base 210, but is not limited thereto.

The first outer surface S1 of the base 210 is from the first corner 7A of the outer surface of the first corner part 216a of the base 210 to the outside of the second corner part 216b of the base 210 It may be an outer surface between the second edge 7B of the side.

The second outer surface S2 of the base 210 is outside of the fourth corner part 216d of the base 210 at the third corner 7C of the outer surface of the third corner part 216c of the base 210. It may be an outer surface between the fourth edge 7D of the side surface.

The third outer surface S3 of the base 210 is outside the fourth corner portion 216d of the base 210 from the first corner 7A of the outer surface of the first corner portion 216a of the base 210 It may be an outer surface between the fourth edge 7D of the side surface.

The fourth outer surface S4 of the base 210 is outside the third corner portion 216c of the base 210 from the second corner 7B of the outer surface of the second corner portion 216b of the base 210 It may be an outer surface between the third edge 7C of the side surface.

For example, the first outer surface S1 of the base 210 may be an outer surface between the first reference line 501 and the second reference line 502, and the second outer surface S2 of the base 210 is It may be an outer surface between the 3 reference line 503 and the fourth reference line 504, and the third outer surface S3 of the base 210 is an outer surface between the first reference line 501 and the fourth reference line 504 The fourth outer surface S4 of the base 210 may be an outer surface between the second reference line 502 and the third reference line 503.

For example, the first reference line 501 may be a straight line passing through the edge 7A of the outer surface of the first corner portion of the base 210 and the center A1 of the base 210, and the second reference line 502 is a base It may be a straight line passing through the edge 7B of the outer surface of the second corner part 219b of 210 and the center A1 of the base 210, and the third reference line 503 is the third of the base 210 It may be a straight line passing through the edge 7C of the outer surface of the corner part 219c and the center A1 of the base 210, and the fourth reference line 504 is the fourth corner part 219d of the base 210. It may be a straight line passing through the edge 7D of the outer surface and the center A1 of the base 210.

The first outer surface (S1) and the second outer surface (S2) of the base 210 may be located opposite to each other, and the third outer surface (S3) and the fourth outer surface (S4) of the base 210 They can be located opposite each other.

For example, the center A1 of the base 210 may be a spatial center of the base 210 in a two-dimensional plane perpendicular to the optical axis OA.

For example, the center A1 of the base 210 may be the center or the spatial center of the base 210 in the direction of the optical axis OA, and side portions 218A to 218d of the base 210 in a direction perpendicular to the optical axis and/ Alternatively, it may overlap with the sensing coil 170.

Alternatively, for example, the center of the base 210 may be a spatial center of the opening 21 of the base 210 in a two-dimensional plane perpendicular to the optical axis OA. Alternatively, the center A1 of the base 210 may be a center or a spatial center of the opening 21 of the base 210 in the direction of the optical axis OA.

The center 210 of the base 210 may be a point where the first center line 401 and the second center line 402 meet.

For example, the first center line 401 may be a straight line that is parallel to the second axis direction (eg, the Y axis direction) and passes through the center A1 of the base 210. For example, the first center line 401 may be a straight line parallel to the outer surface of the third side portion 218c or the fourth side portion 218d of the base 210.

For example, the second center line 402 may be a straight line that is parallel to the first axis direction (eg, the X axis direction) and passes through the center A1 of the base 210. For example, the second center line 402 may be a straight line parallel to the outer surface of the first side portion 218a of the base 210 or the outer surface of the second side portion 218b.

The center A2 of the ring portion of the sensing coil 170 may be a spatial center or a spatial center of the sensing coil 170 in a two-dimensional plane perpendicular to the optical axis OA. Hereinafter, the center of the ring portion of the sensing coil 170 is referred to as "the center of the sensing coil A2".

For example, the center A2 of the sensing coil 170 may be the center or the spatial center of the sensing coil 170 in the direction of the optical axis OA, and the side portion 218A of the base 210 in a direction perpendicular to the optical axis OA. To 218d) and the sensing coil 170 may overlap.

Alternatively, for example, the center A2 of the sensing coil 170 may be the center of a ring made of coil wires (or strands) positioned at the innermost side. Alternatively, the center A2 of the sensing coil 170 may be the center of a ring made of coil wires (or strands) positioned at the outermost side.

The center A of the sensing coil 170 may coincide with the center A1 of the base 210.

Alternatively, for example, the center A of the sensing coil 170 may overlap the center A1 of the base 210 in the optical axis direction.

13 illustrates an arrangement of the base 210, the sensing coil 170, and the circuit board 180 according to another exemplary embodiment, and FIG. 14 is a cross-sectional view in the EF direction of FIG. 9 according to the embodiment of FIG. 13, and FIG. 15 is a cross-sectional view in the GH direction of FIG. 9 according to the embodiment of FIG. 13.

13 to 15, the third center line 403 may be positioned between the first center line 402 and the second side portion 218b of the base 210. The third center line 403 may be a straight line that is parallel to the first axis direction (eg, the X axis direction) and passes through the center A2 of the sensing coil 170. For example, the third center line 403 may be a straight line parallel to the outer surface of the first side portion 218a of the base 210 or the outer surface of the second side portion 218b.

Further, for example, an axis parallel to the optical axis and passing through the center A1 of the base 210 may pass through at least one of the center of the bobbin 110, the center of the housing 140, or the optical axis.

The center A2 of the sensing coil 170 may be spaced apart from the center A1 of the base 210 by a predetermined distance D1 in the second axis direction (Y axis direction).

The center A1 of the base 210 may be located between the center A2 of the sensing coil 170 and the first side portion 218a of the base 210. For example, A1 may be positioned between A2 and an outer surface (or first outer surface S1) of the first side portion 218a of the base 210.

The distance L1 from the outer surface of the first side portion 218a of the base 210 to the center A1 of the base 210 is the first outer surface S1 of the base 210 (or It is smaller than the distance L2 from the outer surface of the first side portion 218a) to the center A2 of the sensing coil 170 (L1<L2).

Alternatively, the center A2 of the sensing coil 170 may be located between the second side portion 218b of the base 210 and the center A1 of the base 210. For example, A2 may be positioned between the second outer surface of the base 210 (or the outer surface of the second side portion 218b of the base 210) and A1.

The distance L3 from the center A2 of the sensing coil 170 to the first outer surface S1 of the base 210 (or the outer surface of the first side 218a of the base 210) is the sensing coil ( It may be greater than the distance L4 from the center A2 of 170) to the second outer surface of the base 210 (or the outer surface of the second side portion 218b of the base 210) (L3>L4).

In addition, the distance from the third outer surface of the base 210 (or the outer surface of the third side portion 218c of the base 210) to the center A1 of the base 210 is the third outer surface of the base 210 ( The distance from the outer surface of the third side portion 218c of the base 210) to the center A2 of the sensing coil 170 may be the same, but is not limited thereto, and in other embodiments, both may be different. have.

In addition, the distance from the fourth outer surface S4 of the base 210 (or the outer surface of the fourth side 218d of the base 210) to the center A1 of the base 210 is the fourth outer surface of the base 210 It may be the same as the distance from the outer surface S4 (or the outer surface of the fourth side portion 218d of the base 210) to the center A2 of the sensing coil, but is not limited thereto, and in other embodiments, both May be different.

Referring to FIG. 14, the depth DT1 of the first groove 9A formed on the first outer surface S1 of the base 210 or the outer surface of the first side portion 218a of the base 210 is the base ( It may be greater than the depth DT2 of the second groove 9B formed on the second outer surface S2 of the base 210 or the outer surface of the second side portion 218b of the base 210 (DT1>DT2).

Hereinafter, the depth DT1 of the first groove is from the first outer surface of the base 210 (or the outer surface of the first side portion 218a of the base 210) to the bottom surface 4A of the first groove 9A. And the depth DT2 of the second groove 9B is from the second outer surface S2 of the base 210 (or the outer surface of the second side 218b of the base 210). It may be the distance to the bottom surface 4B of the groove 9B.

For example, the distance d1 from the center A1 of the base 210 to the first portion 170-1 of the sensing coil 170 (or the bottom surface 4A of the first groove 9A) is the base ( It may be smaller than the distance d2 from the center A1 of 210 to the second portion 170-2 of the sensing coil 170 (or the bottom surface 4B of the second groove 9B) (d1< d2).

For example, d1 (or d2) may be a distance from A1 to the innermost strand of the first portion 170-1 (or second portion 170-2) of the sensing coil 170. For example, the innermost strand may be a strand that contacts the bottom surface 4A or 4B of the first groove 9A or the second groove 9B and is closest to A1.

Referring to FIG. 15, the depth DT3 of the third groove 9C formed on the third outer surface S3 of the base 210 or the outer surface of the third side 218c of the base 210 is the base ( It may be the same as the depth DT4 of the fourth groove 9D formed on the fourth outer surface S4 of 210 or the outer surface of the fourth side portion 218b of the base 210 (DT3 = DT4).

The depth DT3 of the third groove 9C is the bottom of the third groove 9C from the third outer surface S3 of the base 210 (or the outer surface of the third side portion 218c of the base 210). It may be the distance to the surface 4C, and the depth DT4 of the fourth groove 9D is outside the fourth outer surface S4 of the base 210 (or the fourth side portion 218d of the base 210). It may be a distance from the side surface) to the bottom surface 4D of the fourth groove 9D.

Further, each of DT3 and DT4 may be smaller than DT1, but is not limited thereto. In another embodiment, each of the depth of the third groove and the depth of the fourth groove may be greater than or equal to the depth of the first groove.

The number of windings of the first portion 170-1 of the sensing coil 170 disposed in the first groove 9A of the base 210 is the sensing coil 170 disposed in the second groove 9B of the base 210 ) May be the same as the number of windings of the second portion 170-2.

In addition, the number of windings of the third portion 170-3 of the sensing coil 170 disposed in the third groove 9C of the base 210 is the sensing coil disposed in the fourth groove 9D of the base 210 ( It may be the same as the number of turns of the fourth portion 170-4 of 170).

For example, the number of windings of each of the first to fourth portions 170-1 to 170-4 of the sensing coil 170 disposed in each of the first to fourth grooves 9A to 9D may be the same. For example, the optical axis OA of each of the first to fourth portions 170-1 to 170-4 of the sensing coil 170 disposed in the first to fourth grooves 9A to 9D of the base 210 and The number of windings in the vertical direction may be the same, but is not limited thereto. In another embodiment, at least one of the first to fourth parts 170-1 to 170-4 is perpendicular to the optical axis OA. The number of turns in the direction may be different from the others.

Also, for example, the optical axis OA of each of the first to fourth portions 170-1 to 170-4 of the sensing coil 170 disposed in the first to fourth grooves 9A to 9D of the base 210 The number of windings in the direction may be the same, but is not limited thereto. May be different from the rest.

In general, in a structure in which a sensing coil is arranged or wound in a groove formed on the outer surface of the base, and terminals for external connection are arranged on one of the outer surfaces of the base, sensing due to spatial interference between the sensing coil and the external connection terminals The number of turns of the coil may be limited, and thus, an induced voltage generated in the sensing coil may be reduced, and sensing sensitivity and sensing accuracy may be deteriorated.

However, in the embodiment, when comparing the center A2 of the sensing coil 170 disposed in the groove 201 of the base 210 with the center A1 of the base 210, the first and the first and the first 2 The terminals of the circuit board 180 are more biased to the second outer surface S2 located opposite the first outer surface S1 of the base 210 on which the terminals 81 and 82 are disposed. It is possible to prevent the number of turns of the sensing coil 170 from being restricted due to spatial interference with (81, 82).

That is, as described in FIG. 14, the depth DT1 of the first groove 9A formed in the first outer surface S1 of the base 210 is formed in the second outer surface S2 of the base 210. By making the depth of the second groove 9B larger than DT2 (DT1> DT2), the sensing coil 170 is formed by spatial interference with the first and second terminals 81 and 82 of the circuit board 180. It can prevent the number of turns from being restricted.

Meanwhile, the lens driving apparatus according to the above-described embodiment may be used in various fields, for example, a camera module or an optical device.

For example, the lens driving apparatus 100 according to the embodiment forms an image of an object in space by using reflection, refraction, absorption, interference, diffraction, etc., which are characteristics of light, and aims to increase the visual power of the eye, or It may be included in an optical instrument for the purpose of recording and reproducing an image by a lens, or for optical measurement, propagation or transmission of an image, and the like. For example, optical devices according to the embodiment include mobile phones, mobile phones, smart phones, portable smart devices, digital cameras, laptop computers, digital broadcasting terminals, personal digital assistants (PDAs), and portable multimedia players (PMPs). ), navigation, etc., but is not limited thereto, and any device for capturing an image or a photograph may be used.

16 is an exploded perspective view of the camera module 200 according to the embodiment.

Referring to FIG. 16, the camera module includes a lens module 400, a lens driving device 100, an adhesive member 612, a filter 610, a circuit board 800, an image sensor 810, a control unit 410, and It may include a connector 840.

The lens module 400 may include a lens or a lens barrel, and may be mounted or coupled to the bobbin 110 of the lens driving device 100.

For example, the lens module 400 may include one or more lenses and a lens barrel accommodating one or more lenses. However, one configuration of the lens module is not limited to the lens barrel, and any structure may be used as long as it has a holder structure capable of supporting one or more lenses. The lens module may be coupled to the lens driving device 100 and move together with the lens driving device 100.

For example, the lens module 400 may be screwed to the lens driving apparatus 100 as an example. The lens module 400 may be coupled to the lens driving device 100 by an adhesive (not shown) as an example. Meanwhile, light passing through the lens module 400 may pass through the filter 610 and be irradiated onto the image sensor 810.

The adhesive member 612 may couple or attach the base 210 of the lens driving device 100 to the circuit board 800. For example, the adhesive member 612 may be an epoxy, a thermosetting adhesive, or an ultraviolet curable adhesive.

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

In this case, the infrared cut filter may be formed of a film material or a glass material. As an example, the infrared filter may be formed by coating an infrared blocking coating material on a flat optical filter such as a cover glass or cover glass for protecting an imaging surface.

The filter 610 may be disposed under the base 210 of the lens driving device 100.

For example, the base 210 of the lens driving device 100 may have a seating portion for seating the filter 610 on its lower surface. In another embodiment, a separate sensor base for mounting the filter 610 may be provided.

The circuit board 800 may be disposed under the lens driving apparatus 100, and the image sensor 810 may be mounted on the circuit board 800. 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 image sensor 810 may be positioned so that the lens module 400 and the optical axis coincide. Through this, the image sensor may acquire light that has passed through the lens module 400. The image sensor 810 may output irradiated light as an image.

The circuit board 800 may be electrically connected to the coil 120 and the sensing coil 170 of the lens driving device 100.

For example, the circuit board 800 includes first and second terminals 164-1 and 164-2 and first and second terminals 81 and 82 of the lower elastic member 160 of the lens driving apparatus 100. Terminals that are electrically connected may be provided.

The circuit board 800 is shown to include four terminals, but is not limited thereto. In another embodiment, the circuit board 800 includes a plurality of terminals for AF driving, for example, two or more terminals. I can.

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

The connector 840 is electrically connected to the circuit board 800 and may include a port for electrically connecting to an external device.

The control unit 410 controls AF driving of the lens driving apparatus 100.

In addition, the camera module 200 may further include a motion sensor for outputting rotational angular velocity information by the movement of the camera module 200.

17 is a perspective view of a portable terminal 200A according to an embodiment, and FIG. 18 is a configuration diagram of the portable terminal shown in FIG. 17.

17 and 18, 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 output unit 750, a memory unit 760, an interface unit 770, a control unit 780, and a power supply unit 790 may be included.

The body 850 is in the form of a bar, but is not limited thereto, and a slide type, a folder type, a swing type, and a swivel in which two or more sub-bodies are combined to enable relative movement. It can be a variety of structures such as types.

The body 850 may include a case (casing, housing, cover, etc.) forming an 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 embedded in a space formed between the front case 851 and the rear case 852.

The wireless communication unit 710 may include one or more modules that enable wireless communication between the terminal 200A and a wireless communication system or between the terminal 200A and a network in which 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. have.

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

The camera 721 may include the camera module 200 according to the embodiment.

The sensing unit 740 monitors the current state of the terminal 200A, such as the open/closed state of the terminal 200A, the position of the terminal 200A, the presence of user contact, the orientation of the terminal 200A, and acceleration/deceleration of the terminal 200A. By sensing, a sensing signal for controlling the operation of the terminal 200A may be generated. For example, when the terminal 200A is in the form of a slide phone, it is possible to sense whether the slide phone is opened or closed. In addition, it is responsible for a sensing function related to whether the power supply unit 790 supplies power and whether the interface unit 770 is coupled to an external device.

The input/output unit 750 is for generating an input or output related to visual, auditory, or tactile sense. The input/output unit 750 may generate input data for controlling the operation of the terminal 200A, and may also display information processed by the terminal 200A.

The input/output unit 750 may include a keypad unit 730, a display module 751, an audio output module 752, and a touch screen panel 753. The keypad unit 730 may generate input data by inputting a keypad.

The display module 751 may include a plurality of pixels whose color changes according to an electrical signal. For example, the display module 751 includes a liquid crystal display, a thin film transistor-liquid crystal display, an organic light-emitting diode, a flexible display, and a three-dimensional display. It may include at least one of 3D displays.

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

The touch screen panel 753 may convert a change in capacitance caused by a user's touch to a specific area of the touch screen into an electric input signal.

The memory unit 760 may store a program for processing and control of the controller 780, and store input/output data (eg, a phone book, a message, an audio, a still image, a picture, a video, etc.). Can be stored temporarily. For example, the memory unit 760 may store an image captured by the camera 721, for example, a photo or a video.

The interface unit 770 serves as a passage for connecting to external devices connected to the terminal 200A. The interface unit 770 receives data from an external device, receives power, and transmits the data 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 connecting a device equipped with an identification module, and an audio input/output (I/O) port. Output) port, video input/output (I/O) port, and earphone port.

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

The controller 780 may include a multimedia module 781 for playing multimedia. The multimedia module 781 may be implemented in the controller 180 or may be implemented separately from the controller 780.

The controller 780 may perform pattern recognition processing capable of recognizing a handwriting input or a drawing input performed on the touch screen as characters and images, respectively.

The power supply unit 790 may receive external power or internal power under the control of the control unit 780 to supply power required for operation of each component.

Features, structures, effects, and the like 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 may be combined or modified for other embodiments by a person having ordinary knowledge in the field to which the embodiments belong. Accordingly, contents related to such combinations and modifications should be interpreted as being included in the scope of the present invention.

Claims (10)

housing;
A bobbin disposed in the housing;
A coil disposed on the bobbin;
A magnet disposed in the housing;
A base disposed under the housing;
A sensing coil disposed on an outer surface of the base and generating an induced voltage by an interaction with the coil;
A circuit board disposed on the outer surface of the base; And
And an elastic member coupled to the bobbin and the housing and disposed on the base,
The elastic member includes at least one terminal disposed on the outer surface of the base,
The circuit board includes a first terminal electrically connected to one end of the coil and the sensing coil, and a second terminal electrically connected to the other end of the coil and the sensing coil. . The method of claim 1,
At least a portion of the circuit board is disposed between the sensing coil and the at least one terminal of the elastic member. The method of claim 1,
A groove is formed on the outer surface of the base,
The sensing coil is a lens driving device disposed in the groove. The method of claim 3,
The circuit board,
A first portion disposed on the upper surface of the base;
A second portion bent from the first portion of the base to the outer surface of the base; And
And an extension portion extending from the second portion and disposed between the sensing coil and the at least one terminal of the elastic member. The method of claim 4,
At least a portion of the extension part is disposed in the groove of the base. The method of claim 4,
The elastic member includes a first elastic member including a first terminal disposed on the outer surface of the base and a second elastic member including a second terminal disposed on the outer surface of the base,
The lens driving device includes a first extension part disposed between a part of the sensing coil and the first terminal, and a second extension part disposed between the other part of the sensing coil and the second terminal. The method of claim 4,
The circuit board includes a first pad provided on the first portion and coupled to one end of the coil and the sensing coil, and a second pad coupled to the other end of the coil and the sensing coil, ,
The first pad is electrically connected to the first terminal of the circuit board, and the second pad is electrically connected to the second terminal of the circuit board. The method of claim 4,
The lens driving device is formed of an insulating member. The method of claim 4,
The extension part,
A first region disposed between the sensing coil and the at least one terminal of the elastic member;
A second region connecting one side of the first region and the second portion; And
A lens driving device including a third area extending from the other side of the first area. The method of claim 1,
The outer surface of the base is a first outer surface, a second outer surface positioned opposite to the first outer surface, and a third outer surface disposed between the first outer surface and the second outer surface and positioned opposite to each other. Including a side surface and a fourth outer surface,
The base includes a groove formed on each of the first to fourth outer surfaces of the base, and the sensing coil is disposed in the groove of the base,
The at least one terminal of the elastic member is disposed on the first outer surface of the base,
The circuit board is disposed on the first outer surface of the base and includes an extension part disposed between a part of the sensing coil disposed on the first outer surface and the at least one terminal of the elastic member.

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