KR20200079056A - A lens moving unit, and camera module and optical instrument including the same - Google Patents

Abstract

According to an embodiment of the present invention, a lens moving unit comprises: a housing; a bobbin disposed in the housing; a magnet disposed on the bobbin; a base disposed under the housing; and a substrate disposed between the housing and the base, and including a coil facing the magnet in the optical axis direction. A driving signal is provided to the coil, and the bobbin is moved in the optical axis direction by the interaction between the coil and the magnet. In the embodiment, since there is no solder for electrical connection between the coil and an elastic member, it is possible to prevent the occurrence of poor soldering reliability, disconnection, and foreign substances between the coil and the elastic member due to poor soldering.

Description

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

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

The camera module for ultra-small and low power consumption is difficult to apply the technology of the voice coil motor (VCM) used in the existing general camera module, and research on this has been actively conducted.

In the case of a camera module mounted on a small electronic product such as a smartphone, the camera module may be frequently shocked during use, and the camera module may be shaken finely according to a user's hand shake during shooting. In view of this, recently, a technique for additionally installing an anti-shake means in the camera module has been developed.

Embodiments provide a lens driving device capable of preventing the occurrence of foreign matters, disconnection, and weakness in reliability of soldering between a coil and an elastic member due to soldering failure, and a camera module and optical device including the same.

The lens driving apparatus according to the embodiment includes a housing; A bobbin disposed in the housing; A magnet disposed on the bobbin; A base disposed under the housing; And a substrate disposed between the housing and the base and including a coil facing the magnet in an optical axis direction, the coil is provided with a driving signal, and the bobbin is provided by interaction between the coil and the magnet. It can be moved in the optical axis direction.

The substrate includes a coil substrate on which the coil is formed; And a circuit board disposed between the coil substrate and the base and including first and second terminals electrically connected to the coil.

The magnet may be a single-pole magnetized magnet including an N-pole and an S-pole divided in the optical axis direction.

The coil may be spaced apart from the housing and the bobbin.

The magnet includes a plurality of magnets, the coil includes a plurality of coil units corresponding to the plurality of magnets, and the plurality of coil units can be connected in series.

The coil substrate includes first and second pads electrically connected to the coil, and the circuit board includes first and second pads electrically connected to the first and second pads of the coil substrate. In addition, the first and second pads of the circuit board may be electrically connected to the first and second terminals of the circuit board.

The lens driving device further includes a position sensor disposed on the substrate, and the position sensor can output an output signal according to a result of sensing the strength of the magnetic field of the magnet disposed on the bobbin moving in the optical axis direction. .

The position sensor may overlap the magnet in the optical axis direction.

The lens driving device includes an upper elastic member coupled with an upper portion of the bobbin and an upper portion of the housing; And a lower elastic member coupled to a lower portion of the bobbin and a lower portion of the housing, and the substrate may be disposed under the lower elastic member.

Each of the coil units is a closed curve having a central hole, and the central hole may be formed to face the optical axis direction.

The substrate is a body disposed on the base; And a terminal portion that is bent from an upper surface of the body to an outer surface of the base and on which the first and second terminals are formed.

In the embodiment, since there is no soldering for electrical connection between the coil and the elastic member, the reliability of soldering between the coil and the elastic member due to poor soldering, disconnection, and generation of foreign matter can be prevented.

1 is a perspective view of a lens driving apparatus according to an embodiment.
FIG. 2 is an exploded view of the lens driving device of FIG. 1.
3 shows a combined view of the lens driving device excluding the cover member.
4A is a perspective view of the bobbin.
4B is a bottom view of the bobbin.
Figure 4c is a combined view of the bobbin and the magnet.
5 is a perspective view of the housing.
6 is a perspective view of the housing, bobbin, and magnet.
Figure 7 shows the bonding of the bobbin, housing, magnet, and lower elastic member.
8 is an exploded perspective view of the magnet, coil, magnet, circuit board, and base.
9 shows a bottom view of the coil.
10 is a cross-sectional view of the lens driving device of FIG. 3 in the AB direction.
11 is a cross-sectional view of the lens driving device of FIG. 3 in the CD direction.
12 shows electromagnetic force due to interaction between the magnet and the first coil unit.
13 shows a circuit board and a base of a lens driving apparatus having a position sensor.
14 shows a coil according to another embodiment.
15 is an exploded perspective view of a camera module according to an embodiment.
16 is a perspective view of a portable terminal according to an embodiment.
17 shows a configuration diagram of the portable terminal illustrated in FIG. 16.

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

However, the technical spirit of the present invention is not limited to some described embodiments, and may be implemented in various different forms, and within the scope of the technical spirit of the present invention, one or more of its components between embodiments may be selectively selected. It can be used by bonding and substitution.

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

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

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

And, when a component is described as being'connected','coupled' or'connected' to another component, the component is not only directly connected, coupled or connected to the other component, but also to the component It may also include a case of'connected','coupled' or'connected' due to another component between the other components. Further, when described as being formed or disposed in 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 another component described above is formed or disposed between two components. In addition, when expressed as "up (up) or down (down)", it may include the meaning of the downward direction as well as the upward direction based on one component.

Hereinafter, a lens driving apparatus according to an exemplary embodiment and a camera module and optical devices including the same will be described with reference to the accompanying drawings. For convenience of explanation, the Cartesian coordinate system (x, y, z) will be used for explanation, but other coordinate systems may be used for explanation, and the embodiment is not limited thereto. In each drawing, the x-axis and the y-axis mean a direction perpendicular to the z-axis in the optical axis direction, the z-axis direction in the optical axis direction is referred to as a'first direction', and the x-axis direction is referred to as a'second direction', y The axial direction can be referred to as a'third direction'.

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

Hereinafter, the lens driving device may be referred to as a lens driving unit, a VCM (Voice Coil Motor), or an actuator, and hereinafter, the term "coil" may be expressed by replacing a coil unit, The term "elastic member" may be expressed by replacing with an elastic unit, or a spring, and the supporting member may be expressed by replacing with a wire, a spring, or the like.

Also, the term "terminal" may be expressed by replacing a pad, an electrode, a conductive layer, or a bonding portion.

1 is a perspective view of a lens driving apparatus 100 according to an embodiment, FIG. 2 is an exploded view of the lens driving apparatus of FIG. 1, and FIG. 3 shows a combined view of the lens driving apparatus 100 excluding the cover member 300 Shows.

1 to 3, the lens driving apparatus 100 may include a bobbin (bobbin, 110), a coil 120, a magnet 130, a housing (housing, 140), and a substrate 190. .

The lens driving apparatus 100 may further include an upper elastic member 150 and a lower elastic member 160. In addition, the lens driving apparatus 100 may further include a cover member 300 and a base 210.

The bobbin 110 will be described.

The bobbin 110 is disposed inside the housing 140 and may be moved in the optical axis direction or in the first direction (eg, Z-axis direction) by electromagnetic interaction between the coil 120 and the magnet 130.

4A is a perspective view of the bobbin 110, FIG. 4B is a bottom view of the bobbin 110, and FIG. 4C is a combined view of the bobbin 110 and the magnet 130.

4A to 4C, the bobbin 110 is disposed in the housing 140, and a lens or a lens barrel may be coupled, disposed, or mounted on the bobbin 110.

The bobbin 110 may have an opening for mounting a lens or a lens barrel, and the shape of the opening may be circular, elliptical, or polygonal, but is not limited thereto.

The bobbin 110 is disposed or formed on the upper surface and coupled to and fixed to the first inner frame 151 of the upper elastic member 150, and the lower elastic member 160 disposed or formed on the lower surface ) May include a second coupling portion 117 that is coupled and fixed to the second inner frame 161.

In FIGS. 4A and 4B, the first and second coupling portions 113 and 117 are in a planar shape, but are not limited thereto, and in other embodiments, a protrusion or a groove planar shape.

The bobbin 110 may include a first escape groove 112a formed in a region of the upper surface corresponding to the first frame connecting portion 153 of the upper elastic member 150 or overlapping in the optical axis direction.

In addition, the bobbin 110 may include a second escape groove 112b formed in a region of a lower surface corresponding to the second frame connecting portion 163 of the lower elastic member 160 or overlapping in the optical axis direction.

When the bobbin 110 moves in the first direction by the first escape groove 112a and the second escape groove 112b of the bobbin 110, the first frame connection portion 153 and the second frame connection portion 163 Spatial interference between the bobbins 110 can be eliminated, whereby the first frame connecting portion 153 and the second frame connecting portion 163 can be easily elastically deformed.

The bobbin 110 may include a plurality of side surfaces. For example, side surfaces of the bobbin 110 may be outer surfaces of the bobbin 110.

For example, the bobbin 110 may include side parts 110b1 to 110b4 and corner parts 110a1 to 110a4. The first to fourth corner portions 110a1 to 110a4 of the bobbin 110 may be disposed between the first to fourth side portions 110b1 to 110b4 of the bobbin 110. The corner portion and the side portion of the bobbin may be alternately arranged.

Sides or outer surfaces of the first to fourth side parts 110b1 to 110b4 of the bobbin 110 are expressed as “first to fourth sides” or “first to fourth outer surfaces” of the bobbin 110 It may be.

For example, an area of each side or outer surface of each of the first to fourth corner portions 110a1 to 110a4 may be smaller than an area of each side or outer surface of each of the first to fourth side portions 110b1 to 110b4, but is not limited thereto. In other embodiments, both may be identical to each other.

For example, the horizontal length of each side or outer surface of each of the first to fourth corner portions 110a1 to 110a4 is greater than the horizontal length of each side or outer surface of each of the first to fourth side portions 110b1 to 110b4. It may be small, but is not limited thereto, and in other embodiments, both may be the same.

For the placement or seating of the magnet 130, grooves 115a may be provided at corner portions of the bobbin 110. For example, the groove 115a may be formed on the lower, lower, or lower surfaces of each of the corner portions 110a1 to 110a4 of the bobbin 110.

For example, the groove 115a may have a shape recessed from the bottom of the second escape groove 112b, but is not limited thereto. The shape of the groove 115a may have a shape identical or identical to that of the magnet 130, but is not limited thereto.

Referring to FIG. 4C, the lower surface of the magnet 130 disposed in the groove 115a in order to avoid spatial interference with the lower elastic member 160 is the lower surface of the bobbin 110 or the second coupling part of the bobbin 110 ( 117), but is not limited thereto.

For example, the magnet 130 disposed in the groove 115a may be spaced from the second frame connecting portion 163 of the lower elastic member 160, and the lower surface of the magnet 130 disposed in the groove 115a may be lower elastic. It may be positioned higher than the second frame connecting portion 163 of the member 160.

Next, the magnet 130 will be described.

The magnet 130 may generate electromagnetic force by interaction with the coil 120, and may be a driving magnet capable of moving the bobbin 110 in the optical axis direction by the electromagnetic force.

The number of magnets 130 may be at least one. For example, the magnet 130 includes four magnets 130-1 to 130-4, but is not limited thereto. In another embodiment, the magnet 130 may include two or more magnets.

The magnet 130 may be disposed on the bobbin 110. For example, the magnet 130 may be disposed on at least one of the corner portions 110a1 to 110a4 of the bobbin 110, but is not limited thereto.

For example, each of the magnets 130-1 to 130-4 may be disposed at a corresponding one of the corner portions 110a1 to 110a4 of the bobbin 110.

For example, the magnets 130-1 to 130-4 may be disposed in the groove 115a of the bobbin 110, but is not limited thereto.

In another embodiment, the magnet 130 may be disposed on the side or outer surface of the bobbin 110. For example, in other embodiments, the magnets 130-1 to 130-4 may be disposed on any one of the side parts 110b1 to 110b4 of the bobbin 110.

The shapes of each of the magnets 130-1 to 130-4 may have the same shape as the shape of a region (eg, a corner portion or a groove 115a) of the bobbin 110 to be disposed.

8 and 11, the length of the horizontal direction L1 decreases as each of the magnets 130-1 to 130-4 goes from the first surface 11a toward the second surface 11b. It may include a first portion (Q1).

For example, each of the magnets 130-1 to 130-4 may further include a second portion Q2 having a constant length in the horizontal direction toward the direction from the first surface 11a toward the second surface 11b. have.

The first portion Q1 of the magnet 130 may include the second surface 11b or may contact the second surface 11b. In addition, the second portion Q2 of the magnet 130 may include the first surface 11a or may contact the first surface 11a.

The first side 11a of the magnet 130 may be any side (or side) facing the side (or side) of the bobbin 110, and the second side 11b of the first side 11a It can be the opposite side.

The reason why the length L1 in the horizontal direction of the first portion Q1 of the magnet 130 decreases is that the magnet 130 is disposed in the corner portions 142-1 to 142-4 of the housing 140. .

For example, the horizontal direction of the first surface 11a of the magnet 130 may be a direction perpendicular to the direction from the lower surface of the magnet 130 to the upper surface of the first surface 11a. Alternatively, the horizontal direction of the first surface 11a may be a direction perpendicular to the optical axis direction in the first surface 11a.

For example, each of the magnets 130-1 to 130-4 may include an N pole and an S pole divided in the optical axis (OA) direction. For example, each of the magnets 130-1 to 130-4 may be a single-pole magnetized magnet including an N-pole and an S-pole divided in the optical axis (OA) direction.

For example, each of the magnets 130-1 to 130-4 may include an N pole and an S pole located under the N pole. Alternatively, in another embodiment, the N pole may be disposed below the S pole.

For example, each of the magnets 130-1 to 130-4 in the optical axis OA direction may overlap with any one of the coil units 120-1 to 120-4, and the coil units 120-1 to 120-4) may face the N pole or the S pole of the magnet 130.

Next, the housing 140 will be described.

The housing 140 accommodates the bobbin 110 on which the magnet 130 is disposed.

5 is a perspective view of the housing 140, and FIG. 6 is a perspective view of the housing 140, the bobbin 110, and the magnet 130.

5 to 6, the housing 140 accommodates the bobbin 110 inside so that the AF movable unit, for example, the bobbin 110 can move in the optical axis OA direction.

The AF movable unit may include bobbins 110 elastically supported by the upper elastic member 150 and the lower elastic member 160, and components mounted on the bobbin 110 and moved together with the bobbin 110. For example, the AF movable unit may include a bobbin 110 and a magnet 130. Or, for example, the AF movable unit may further include a lens (not shown) mounted on the bobbin 110.

The housing 140 may have a pillar shape having an opening, and the opening may be a through hole penetrating the housing 140. The housing 140 may include a plurality of side parts (eg, 141-1 to 141-4) and a plurality of corner parts (eg, 142-1 to 142-4).

For example, the housing 140 may have polygonal (eg, square or octagonal) or side portions (eg, 141-1 to 141-4) and corners (eg, 142-1 to 142-4) forming a circular opening. It may include.

For example, the housing 140 is located between the first to fourth side portions 141-1 to 141-4 spaced apart from each other, the first side portion 141-1 and the second side portion 141-2 positioned between the first Corner part 142-1, second corner part 142-2, third side part 141-3 and fourth part located between second side part 141-2 and third side part 141-3 The third corner portion 142-3 positioned between the side portions 141-4, and the fourth corner portion 142-4 positioned between the fourth side portion 141-4 and the first side portion 141-1. ).

The housing 140 is provided on a first side (or first outer side) corresponding to a first side (or first outer side) of the bobbin 110, and on a second side (or second outer side) of the bobbin 110. A corresponding second side (or second outer side), a third side (or third outer side) corresponding to a third side (or third outer side) of the bobbin 110, and a fourth side of the bobbin 110 It may include a fourth side (or fourth outer surface) corresponding to the side (or the fourth outer surface). The third and fourth sides (or third and fourth outer surfaces) of the housing 140 are disposed between the first and second sides (or first and second outer surfaces) of the housing 140. Can be.

For example, each of the first to fourth side surfaces (or the first to fourth outer surfaces) of the housing 140 may be one of the first to fourth side parts 141-1 to 141-4 of the housing 140. It may be either a corresponding side or an outer side.

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

Each of the first to fourth side portions 141-1 to 141-4 of the housing 140 may correspond to any one of the first to fourth side portions 110b1 to 110b4 of the bobbin 110, and the housing Each of the first to fourth corner portions 142-1 to 142-4 of 140 may correspond to any one of the first to fourth corner portions 110a1 to 110a4 of the bobbin 110.

The housing 140 may include a stopper 143 formed on the top, top, or top of the housing 140. For example, the stopper 143 may protrude from the upper surface of the housing 140 in the optical axis direction.

For example, the stopper 143 may be disposed on at least one of the first to fourth corner portions 142-1 to 142-4 of the housing 140, but is not limited thereto.

The housing 140 may include at least one first coupling portion 144 provided on the upper, upper, or upper side of the housing 140 for coupling with the first outer frame 152 of the upper elastic member 150. have. For example, the at least one first coupling portion 144 may be disposed on at least one of the first to fourth corner portions 142-1 to 142-4, but is not limited thereto.

In addition, the housing 140 includes at least one second coupling portion 147 provided on the lower, lower, or lower side of the housing 140 for coupling with the second outer frame 162 of the lower elastic member 160. can do.

In FIGS. 5 and 6, the first and second coupling parts 144 and 147 of the housing 140 are respectively implemented in a plane, but are not limited thereto, and in other embodiments, the first and second housings 140 Each of the engaging portions may be in the form of a projection or groove.

In order to prevent the bottom or bottom of the housing 140 from colliding with the base 210 to be described later, the housing 140 may include at least one stopper (not shown) protruding from the bottom, bottom, or bottom.

For example, the lower end of the corner portions 142-1 to 1242-4 of the housing 140 and the protrusion 216 of the base 210 may be coupled by the adhesive member, and the housing 140 is coupled to the base 210. Can be combined.

The housing 140 has first to fourth sides 141-to avoid spatial interference between the first frame connecting portion 153 of the upper elastic member 150 and the portion where the first outer frame 151 is connected. 1 to 141-4) may have an upper escape groove 41 provided at an upper portion, an upper surface, or an upper portion.

In addition, the housing 140 in order to avoid spatial interference between the second frame connecting portion 163 of the lower elastic member 160 and the portion where the second outer frame 161 is connected, the first to fourth side portions 141 -1 to 141-4) may be provided with at least one lower, lower, or lower escape groove provided at the lower end.

Next, the upper elastic member 150 and the lower elastic member 160 will be described.

7 shows a bonding diagram of the bobbin 110, the housing 140, the magnet 130, and the lower elastic member 160.

3 and 7, the upper elastic member 150 and the lower elastic member 160 may be coupled to the bobbin 110. The upper elastic member 150 and the lower elastic member 160 may elastically support the bobbin 110 with respect to the housing 140.

For example, the upper elastic member 150 and the lower elastic member 160 may be coupled to the bobbin 110 and the housing 140, and may support the bobbin 110.

For example, the upper elastic member 150 may be combined with the upper, upper, or upper end of the bobbin 110 and the upper, upper, or upper end of the housing 140, and the lower elastic member 160 of the bobbin 110 It can be combined with the lower, lower, or lower and lower, lower, or lower sides of the housing 140.

3 and 7, the number of upper elastic members 150 is one, and the number of lower elastic members 160 is one, but is not limited thereto. In another embodiment, at least one of the upper elastic member 150 or the lower elastic member 160 may be divided or separated into two or more.

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, suspension wire, or the like.

The upper elastic member 150 includes a first inner frame 151 coupled to an upper, upper, or upper end of the bobbin 110, and a first outer frame 152 coupled to an upper, upper, or upper end of the housing 140. , And a first frame connection part 153 connecting the first inner frame 151 and the first outer frame 152.

The first inner frame 151 of the upper elastic member 150 may be coupled to the first coupling portion 113 of the bobbin 110 by an adhesive member or heat fusion. In an embodiment in which the first coupling portion of the bobbin 110 is in the form of a projection or a groove, a hole for coupling with the first coupling portion of the bobbin 110 may be provided in the first inner frame 151.

The first outer frame 152 of the upper elastic member 150 may be coupled to the first coupling portion 144 of the housing 140 by an adhesive member or heat fusion. In an embodiment in which the first coupling portion of the housing 140 is in the form of a projection or a groove, a hole for coupling with the first coupling portion of the housing 140 may be provided in the first outer frame 152.

For example, the upper elastic member 150 may include four first frame connecting portions 153, and the four first frame connecting portions 153 may include first to fourth corner portions 142 of the housing 140. -1 to 142-4), but the number and location are not limited thereto.

The lower elastic member 160 may be disposed between the bobbin 110 and the base 210.

The lower elastic member 160 includes a second inner frame 161 coupled to a lower, lower, or lower portion of the bobbin 110, and a second outer frame 162 coupled to a lower, lower, or lower portion of the housing 140. , And a second frame connection part 163 connecting the second inner frame 161 and the second outer frame 162.

In addition, the first inner frame 161 of the lower elastic member 160 may be coupled to the second coupling portion 117 of the bobbin 110 by an adhesive member or heat fusion. In an embodiment in which the second coupling portion of the bobbin 110 is in the form of a projection or a groove, a hole for coupling with the second coupling portion of the bobbin 110 may be provided in the second inner frame 161.

In addition, the first outer frame 162 of the lower elastic member 160 may be coupled to the second coupling portion 147 of the housing 140 by an adhesive member or heat fusion. In an embodiment in which the second coupling portion of the housing 140 is in the form of a projection or a groove, a hole for coupling with the second coupling portion of the housing 140 may be provided in the second outer frame 162.

Each of the first frame connecting portion 153 and the second frame connecting portion 163 of the upper elastic member 150 and the lower elastic member 160 is formed to be bent or curved (or curved) at least once, thereby forming a pattern of a predetermined shape. Can form. The bobbin 110 may be elastically (or elastically) supported in the first direction and/or the downward movement through the position change and micro-deformation of the first and second frame connection parts 153 and 163.

In order to absorb and cushion the vibration of the bobbin 110, the lens driving device 100 is provided between the upper elastic member 150 and the bobbin 110, and/or the upper elastic member 150. A damper (not shown) disposed between the housings 140 may be provided.

For example, a damper (not shown) may be disposed in a space between the first frame connecting portion 153 and the bobbin 110 of the upper elastic member 150, and/or the space between the first frame connecting portion 153 and the housing 140. Can.

In addition, for example, the lens driving device 100 is disposed between the second frame connecting portion 163 and the bobbin 110 of the lower elastic member 160, and/or between the second frame connecting portion 163 and the housing 140. A damper (not shown) may be further provided.

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

Referring to FIG. 7, the magnet 130 may overlap with at least a portion of the second frame connecting portion 163 of the lower elastic member 160 in the optical axis (OA) direction, but is not limited thereto.

As illustrated in FIG. 3, the coil 120 and the magnet 130 may not be disposed in the housing 140. For example, the magnet 130 may be spaced from the housing 140, and the coil 120 may be spaced from the housing 140.

Next, the coil 120, the circuit board 190, and the base 210 will be described.

The coil 120 may be disposed under the magnet 130 disposed on the bobbin 110.

8 is an exploded perspective view of the magnet 130, the coil 120, the magnet 130, the circuit board 190, and the base 210, FIG. 9 shows a bottom view of the coil 120, and FIG. 3 is a sectional view in the AB direction of the lens driving apparatus 100 of FIG. 3, and FIG. 11 is a sectional view in the CD direction of the lens driving apparatus 100 of FIG. 3.

8 to 11, the coil 120 may be disposed under the bobbin 110 and/or the housing 140 and may be disposed on the circuit board 190. The coil 120 may face or overlap the magnet 130 in the optical axis direction.

The coil 120 may include a plurality of coil units 120-1 to 120-4.

Each of the plurality of coil units 120-1 to 120-4 may correspond to any one of the magnets 130-1 to 130-4. In addition, each of the plurality of coil units 120-1 to 120-4 may face one of the magnets 130-1 to 130-4 in the optical axis direction or may overlap in the optical axis direction.

For example, the number of coil units may be the same as the number of magnets.

The coil units 120-1 to 120-4 may be electrically connected in series.

For example, referring to FIG. 9, one end of the first coil unit 120-1 may be connected to one end of the fourth coil unit 120-4, and the other end of the fourth coil unit 120-2 may be third. One end of the coil unit 120-3 may be connected, and the other end of the third coil unit 120-3 may be connected to one end of the second coil unit 120-2. Therefore, both ends of the coil 120 may be the other end of the first coil unit 120-1 and the other end of the second coil unit 120-2. 9 is an example of both ends of the coil 120, and both ends of the coil 120 may be implemented in various forms.

For example, the coil 120 includes a coil substrate 121 and coil units 120-1 to 120-4 provided on the coil substrate 121 and corresponding to the magnets 130-1 to 130-4. can do. The coil substrate 121 may be expressed by replacing it with a “circuit member” or a “substrate”.

The coil substrate 121 may have a polygonal (eg, square) shape. For example, the coil substrate 121 may include four sides and four corners, an opening of the housing 140, an opening 31 of the circuit board 190, and/or an opening 215 of the base 210 ) May include an opening 21 (or hollow). The opening 21 may be a through hole penetrating the coil substrate 121.

The corner of the coil substrate 121 shown in FIG. 8 is implemented in a chamfered shape, but is not limited thereto, and in other embodiments, the corner may be provided without a chamfer.

Each of the first to fourth coil units 120-1 to 120-4 may have a closed curve having a central hole, for example, a ring shape, and the central hole may be formed to face the optical axis direction.

In addition, the central hole of each of the first to fourth coil units 120-1 to 120-4 may overlap with any one of the magnets 130-1 to 130-4 in the optical axis direction.

Each of the first to fourth coil units 120-1 to 120-4 may include straight portions K1 and K2 facing each other and curved portions K3 and K4 facing each other.

For example, the straight portions K1 and K2 may overlap with any one of the magnets 130-1 to 130-4. For example, the curved parts K3 and K4 may overlap with any one of the magnets 130-1 to 130-4.

Each of the first to fourth coil units 120-1 to 120-4 may be formed in a pattern having a continuous spiral, oval, and/or track shape on the coil substrate 121.

For example, each of the first to fourth coil units 120-1 to 120-4 may be made of a conductor, such as copper, gold, aluminum, silver, which is a metal, or an alloy including at least one of them. .

For example, the first to fourth coil units 120-1 to 120-4 may be formed adjacent to corners of the coil substrate 121, but are not limited thereto, and in other embodiments, the coil substrate 121 It may be formed adjacent to the sides of the.

Referring to FIG. 9, a wire 35a or a circuit pattern for connecting the coil units 120-1 to 120-4 in series may be formed on the coil substrate 121.

A first pad P1 and a second pad P2 electrically connected to both ends of the coil 120 may be formed on the coil substrate 121. For example, the first pad P1 may be connected to the other end of the first coil unit 120-1, which is one end of the coil 120, and the second pad P2 may be a second coil unit that is the other end of the coil 120. It may be connected to the other end of (120-2).

A wire 35 for connecting both ends of the coil 120 and the first and second pads P1 and P2 may be formed on the coil substrate 121.

Each of the coil units 120-1 to 120-4 may have a shape identical or identical to that of any one of the magnets 130-1 to 130-4, but is not limited thereto.

The coil units 120-1 to 120-4 move the bobbin 110 in the optical axis direction through electromagnetic interaction with the magnets 130-1 to 130-4 to adjust the focus of the lens ( Auto Focus) may be a driving coil.

In other embodiments, the coil units 120-1 to 120-4 are not formed on the coil substrate 121, but may include coil units separate from the coil substrate 121. At this time, the coil units may be electrically connected to the coil substrate 121 by soldering or the like.

Alternatively, in another embodiment, the coil substrate 121 is omitted, and the coil 120 may include coil units connected in series. At this time, both ends of the coil units connected in series may be electrically connected to the first and second terminals 9A and 9B of the circuit board 190.

A driving signal (eg, a driving current or voltage) may be applied to the coil 120 to generate electromagnetic force by interacting with the magnets 130-1 to 130-2.

For example, the driving signal applied to the first to fourth coil units 120-1 to 120-4 may be a DC signal. Or, for example, in another embodiment, the driving signals applied to the first to fourth coil units 120-1 to 120-4 may include an AC signal and a DC signal.

The AF movable unit may be unidirectionally driven or bidirectionally driven by electromagnetic force caused by interaction between the coil units 120-1 to 120-4 and the magnets 130-1 to 130-2. Here, the unidirectional driving refers to moving in the unidirectional direction, for example, an upward direction (eg, an upward direction (+Z axis direction)) based on the initial position of the AF movable unit, and the bidirectional driving is AF operation based on the initial position of the AF movable unit It refers to moving in an additional two-way direction (for example, upward direction or downward direction).

For example, the initial position of the bobbin 110 may be the initial position of the AF movable unit (eg, bobbin) without applying power or driving signals to the first to fourth coil units 120-1 to 120-4. It may be, and the upper elastic member 150 and the lower elastic member 160 may be a position where the AF moving part is elastically deformed only by the weight of the AF moving part.

In addition, the initial position of the bobbin 110 is a position where the AF moving part is placed when gravity acts from the bobbin 110 to the base 210, or vice versa, when gravity acts from the base 210 to the bobbin 110. Can be

Since the first to fourth coil units 120-1 to 120-4 are connected in series, one and the same driving signal is provided to the first to fourth coil units 120-1 to 120-4. Can.

12 shows electromagnetic force caused by interaction between the magnet 130-1 and the first coil unit 120-1. The description in FIG. 12 can be equally applied to electromagnetic force caused by the mutual action between the magnets 130-2 to 130-4 and the second to fourth coil units 120-2 to 120-4.

Since the N pole and the S pole of the magnet 130-1 are arranged in the vertical direction, the magnetic force B received by the first coil unit 120-1 is as shown in FIG. 12. Therefore, when the driving signal (or the driving current I) applied to the first coil unit 120-1 flows counterclockwise, the interaction between the first coil unit 120-1 and the magnet 130-1. By this, the electromagnetic force F in the upward direction may be applied or generated, and thereby the AF movable unit (for example, the bobbin 110 including the magnet 130) may be moved in the upward direction.

The first to fourth coil units are controlled by controlling the intensity or/and the polarity (eg, a direction in which a current flows) of the driving signal I applied to the first to fourth coil units 120-1 to 120-4. The strength or/and the direction of the electromagnetic force can be adjusted by the interaction between (120-1 to 120-4) and the magnets (130-1 to 130-4), thereby controlling the movement of the AF moving part, , The auto focusing function can be performed.

Each of the first to fourth coil units 120-1 to 120-4 may be formed to have a closed loop shape. For example, it may be a ring shape wound in a clockwise or counterclockwise direction based on the optical axis OA.

Next, the circuit board 190 will be described.

The circuit board 190 may be disposed under the coil 120. For example, the circuit board 190 may be disposed between the coil substrate 231 and the base 210.

The circuit board 190 is a body 191 disposed on the upper surface of the base 210, and a plurality of terminals bent from the upper surface of the body 191 to the outer surface of the base 210 and receiving electrical signals from the outside ( terminals.9A, 9B), or at least one terminal portion 192 on which pins are provided.

For example, the circuit board 190 may include one terminal portion 192, and one terminal portion 192 may be bent to either side of the base 210.

In addition, a groove 91 adjacent to both ends of the terminal portion 192 may be provided on one side of the body 191 on which the terminal portion 192 is formed. The groove 91 may be formed in one region of one side of the body 191 adjacent to the top of one side of the terminal portion 192, and another region of one side of the body 191 adjacent to the other top of the terminal portion 192. Can be formed on. The groove 91 may be formed to facilitate bending of the terminal portion 192, but in other embodiments, the groove 91 may be omitted.

The body 191 of the circuit board 190 corresponds to the opening of the bobbin 110, the opening of the housing 140, the opening 21 of the coil 120, and/or the opening 215 of the base 210. An opening 31 may be provided.

The shape of the body 191 of the circuit board 190 may be a shape that matches or corresponds to the shape of the outer circumferential surface of the base 210 or the outer circumferential surface of the coil substrate 121, for example, a polygonal shape (eg, a square or octagon). .

A driving signal to be provided to the coil 120 may be input to the terminals 9A and 9B formed in the terminal portion 192 of the circuit board 190.

For example, the circuit board 100 may be provided as an FPCB.

In another embodiment, instead of the terminals of the circuit board 190, terminals are directly formed on the base 210 by using a surface electrode method or the like on the surface of the base 210, or terminals are assembled or combined on the base 210. It may be.

Referring to FIG. 8, the circuit board 190 may include first and second pads Q1 and Q2 corresponding to the first and second pads P1 and P2 of the coil substrate 121. .

The first pad Q1 of the circuit board 190 and the first pad P1 of the coil substrate 121 may be combined by a conductive adhesive member or solder, and both may be electrically connected.

In addition, the second pad Q2 of the circuit board 190 and the second pad P2 of the coil substrate 121 may be combined by a conductive adhesive member or solder, and both may be electrically connected.

For example, the first pad Q1 of the circuit board 190 may at least overlap with the first pad P1 of the coil substrate 121 in the optical axis direction, and the second pad Q2 of the circuit board 190 may In the optical axis direction, the second pad P2 of the coil substrate 121 may overlap.

Each of the first and second pads Q1 and Q2 of the circuit board 190 may be electrically connected to a corresponding one of the first and second terminals 9A and 9B of the circuit board 190. Accordingly, the driving signals provided through the first and second terminals 9A and 9B of the circuit board 190 are the first and second pads Q1 and Q2 of the circuit board 190 and the coil board 121. The first and second pads P1 and P2 may be provided to the coil 120 by electrical connection.

In another embodiment, the circuit board 190 is omitted, electrically connected to both ends of the coil units 120-1 to 120-4 connected in series, and two terminals for electrical connection with the outside are formed on the coil board It may be.

Next, the base 210 will be described.

Referring to FIG. 8, the base 210 may have an opening corresponding to an opening of the bobbin 110, and/or an opening of the housing 140, and a shape that matches or corresponds to the cover member 300, such as , It may be a rectangular shape.

A stepped portion 212 may be formed at a lower end of the side surface of the base 210, and when the cover member 300 is adhesively fixed to the stepped portion 212 of the base 210, an adhesive may be applied. At this time, the stepped 211 of the base 210 may guide the lower end of the side plate of the cover member 300 coupled to the upper side, and may face the lower end of the side plate of the cover member 300. An adhesive member or a sealing member may be disposed or applied between the lower end of the side plate of the base 210 and the stepped 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. In addition, the base 210 may be disposed under the circuit board 190.

A protrusion 216 corresponding to a lower end of the corner portions 142-1 to 142-4 of the housing 140 may be provided at an edge of the upper surface of the base 210. For example, the protruding portion 216 of the base 210 may be a polygonal pillar shape protruding from the upper surface of the base 210 to be perpendicular to the upper surface of the base 210, but is not limited thereto.

The protruding portion 216 of the base 210 is the lower or/and lower elastic member 160 of the corner portions 142-1 to 142-4 of the housing 140 by an adhesive member (not shown) such as epoxy or silicone. It can be fastened or combined with the second outer frame 162 of.

The base 210 may include a seating groove 205 for seating a lower end of the circuit board 190 on one side corresponding to the terminal portion 192 of the circuit board 190.

For example, the seating groove 205 may be provided on one side of the base 210 corresponding to the first side 141-1 of the housing 140. For example, the terminals 9A and 9B of the circuit board 190 may be disposed in the seating groove 205 of the base 210.

The cover member 300 will be described.

The cover member 300 accommodates other components 110, 120, 130, 140, 150, 160, 170, 190 in an accommodation space formed with the base 210.

The cover member 300 may be in the form of a box in which a lower portion is opened, and includes a top plate 301 and side plates 302, and a lower end of the side plates 302 of the cover member 300 has a base 210 ) And some (eg, 212). The shape of the top plate 301 of the cover member 300 may be a polygon, for example, a square or an octagon, and an opening for exposing a lens (not shown) to external light may be provided on the top plate 301.

The material of the cover member 300 may be a non-magnetic material such as SUS or plastic to prevent the phenomenon of sticking with the magnet 130, but is not limited thereto. In another embodiment, a yoke function is formed by forming a magnetic material. You can also do

Generally, for AF driving, application of a driving signal, for example, current, to the AF coil is required, and an electrical connection structure for electrically connecting the AF coil and an external terminal (eg, a terminal of a circuit board) is required.

In general, an elastic member (for example, an upper elastic member or a lower elastic member) can be used to electrically connect the AF coil and an external terminal, and for this, a lead between the AF coil and the elastic member is required.

However, due to soldering failure, reliability of soldering between the AF coil and the elastic member may be weak, and disconnection of electrical connection with the AF coil may occur. In addition, the reliability of the lens driving device is deteriorated due to foreign substances generated during soldering, which may degrade the performance of the camera module.

In an embodiment, the coil 120 is not disposed in the bobbin 110 or the housing 140, but is spaced apart from the bobbin 110 and the housing 140 and disposed under the housing 140. Due to this, since a separate structure for mounting the coil to the bobbin 110 or the housing 140, for example, a mounting protrusion or a mounting groove is not required, design freedom of the bobbin and the housing can be improved.

In addition, since there is no soldering for electrical connection between the coil 120 and the elastic member 150, or 160, the embodiment is weak in reliability of soldering between the AF coil and the elastic member due to the above-described soldering failure, disconnection, and foreign matter. Can be prevented.

13 shows a circuit board 190A and a base 210A of the lens driving apparatus 100 having the position sensor 170. The same reference numerals as in FIG. 8 denote the same configuration, and the description of the same configuration is simplified or omitted.

Referring to FIG. 13, the lens driving apparatus 100 may further include a position sensor 170 electrically connected to the circuit board 190.

The position sensor 170 may be mounted, mounted, or disposed on the circuit board 190. For example, the position sensor 170 may be mounted, mounted, or disposed on the lower surface of the circuit board 190.

In addition, the position sensor 170 mounted on the circuit board 190 may be disposed in the seating groove 215-1 of the base 210 located under the circuit board 190.

The position sensor 170 may detect the displacement of the AF movable unit (eg, bobbin 110) in the optical axis direction.

For example, the position sensor 170 may detect the strength or magnetic force of the magnetic field of the magnet 130 disposed or mounted on the bobbin 110 moving in the optical axis direction, and an output signal (eg, output voltage) according to the detected result ).

For example, the intensity of the magnetic field of the magnet 130 sensed by the position sensor 170 may change according to the displacement of the bobbin 110 in the optical axis direction, and is proportional to the intensity of the magnetic field sensed by the position sensor 170. Output signal can be output.

The control unit 830 or 780 of the camera module or the optical device, which will be described later, can detect the displacement of the bobbin 110 in the optical axis direction using the output signal of the position sensor 170, and the detected displacement of the bobbin 110 Based on this, it is possible to control the driving signal provided to the coil 120, thereby performing AF feedback driving.

The position sensor 170 may overlap any one of the magnets 130-1 to 130-4 in the optical axis direction, but is not limited thereto. In another embodiment, the position sensor 170 may not overlap with the magnets 130-1 to 130-4 in the optical axis direction.

In addition, the position sensor 170 may overlap with any one of the coil units 120-1 to 120-4 of the coil 120 in the optical axis direction. For example, the coil unit (eg, 120-2) overlapped with the position sensor 170 in the optical axis direction may overlap with the magnet (eg, 130-2) overlapped with the position sensor 170 in the optical axis direction in the optical axis direction. .

In another embodiment, the position sensor 170 may not overlap with the coil units 120-1 to 120-4 of the coil 120 in the optical axis direction.

The position sensor 170 may be a hall sensor, and any sensor capable of detecting magnetic field strength may be used.

For example, the position sensor 170 may be implemented in the form of a driver including a Hall sensor or a position detection sensor alone such as a Hall sensor.

For example, in the first case where the position sensor 170 is implemented as a hall sensor alone, the circuit board 190A may include first to sixth terminals B1 to B6.

For example, in the first case, the first and second terminals B1 and B2 of the circuit board 190A may be electrically connected to the first and second pads Q1 and Q2 of the circuit board 190A, Driving signals for providing to the coil 120 may be input to the first and second terminals B1 and B2 of the circuit board 190A.

Also, for example, in the first case, the third to sixth terminals B3 to B6 of the circuit board 190A may be electrically connected to the position sensor 170, and the four terminals B3 of the circuit board 190A To B6), a driving signal for driving the position sensor 170 may be provided, and the remaining two of the four terminals B3 to B6 of the circuit board 190A may be provided with the driving signal. Output can be output.

In addition, for example, in the second case where the position sensor 170 is implemented in the form of a driver including a Hall sensor, the circuit board 190A includes four terminals electrically connected to the position sensor 170. can do.

In the second case, a power signal may be provided to the position sensor 170 through two of the four terminals of the circuit board 190A. In the second case, between the position sensor 170 and an external device, a clock signal for data communication using a protocol, for example, I2C communication, through the remaining two of the four terminals of the circuit board 190A. (SCL) and a data signal (SDA) may be transmitted and received.

In the second case, the position sensor 170 may be electrically connected to the first and second pads Q1 and Q2 of the circuit board 190A, and the position sensor 170 may include the first and second pads ( The driving signal can be directly provided to the coil 120 through Q1 and Q2).

In another embodiment, a sensing magnet disposed on the bobbin 110 separately from the magnet 130 may be further provided. At this time, the sensing magnet may be disposed between any two neighboring magnets, and the position sensor 170 may overlap the sensing magnet in the optical axis direction and may not overlap the magnet 130 in the optical axis direction. Also, the position sensor 170 may not overlap with the coil units 120-1 to 120-4 of the coil 120 in the optical axis direction.

14 shows coils 120-1A to 120-4A according to another embodiment.

14, in the lens driving apparatus according to another embodiment, the coil substrate 121 and the circuit board 190 shown in FIG. 8 may be integrally formed. That is, the coil 120 of FIG. 8 is omitted, and the coil units 120-1A to 120-4A may be formed on the circuit board 190B.

The circuit board 190B may include a body 191A and a terminal portion 192A.

The coil units 120-1A to 120-4A may be formed adjacent to the corners of the body 191A, but is not limited thereto, and in other embodiments, the coil units 120-1A to 120-4A may be formed adjacent to sides of the circuit board 190B. It might be. That is, the coil units 120-1A to 120-4-A may be formed on the circuit board 190B to correspond to the position of the magnet in the housing 140.

The coil units 120-1A to 120-4A may be connected in series, and both ends of the coil units 120-1A to 120-4A connected in series may include first and second terminals 9A of the circuit board 190B. ,9B) can be electrically connected.

For example, a wiring pattern 36a or a circuit pattern for connecting the coil units 120-1A to 120-4A in series may be formed on the circuit board 190B.

In addition, for example, a wiring for connecting both ends of the coil units 120-1A to 120-4A connected in series to the circuit board 190B and the first and second terminals 9A and 9B of the circuit board 190B ( 36) can be formed.

The shapes, arrangements, and arrangement relations with the magnets 130 of the coil units 120-1A to 120-4A are the same as those described with respect to the coil units 120-1 to 120-4 in FIGS. 1 to 12 or Analogy can be applied.

In the embodiment of FIG. 13, the coil 120 may be omitted, and as described in FIG. 14, coil units may be formed on the circuit board 190A of FIG. 13. In this case, the first and second pads Q1 and Q2 of the circuit board 190A may be omitted, and the coil units formed on the circuit board 190A may be formed by wiring or circuit patterns formed on the circuit board 190A. The terminals (eg, B1 and B2) of the circuit board 190A may be electrically connected.

1 to 14, the magnet 130 is disposed in the housing 140, but is not limited thereto. In other embodiments, the housing 140 may be omitted, and the magnet 130 may include a cover member 300 or It may be arranged or mounted on the base 210.

For example, the magnet 130 may be disposed or fixed to the inner surface of the cover member 300. In this case, the upper elastic member 150 may be coupled to the bobbin 110 and the cover member 300. For example, the outer frame 151 of the upper elastic member 150 may be coupled to the inner surface (or inner surface of the top plate) of the cover member 300. In addition, the lower elastic member 160 may be coupled to the base 210 or the cover member 300.

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.

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

15, the camera module 200 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, and a connector (connector, 840).

The lens module 400 may include a lens or/and a lens barrel, and may be mounted on 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 holder structure capable of supporting one or more lenses may be used. The lens module is coupled to the lens driving device 100 and can move together with the lens driving device 100.

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

The adhesive member 612 may attach 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, an ultraviolet curable adhesive, or the like.

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

At this time, 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 ray blocking coating material on a plate-shaped optical filter such as a cover glass for protecting an imaging surface and a cover glass.

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

For example, the base 210 may be provided on the lower surface of the seating portion for the filter 610 to be seated. In another embodiment, a separate sensor base for seating the filter 610 may be provided.

The circuit board 800 may be disposed under the lens driving apparatus 100, and an 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 apparatus 100 and convert the received image into an electrical signal.

The image sensor 810 may be positioned such that the lens module 400 and the optical axis coincide. Through this, the image sensor may acquire light passing through the lens module 400. The image sensor 810 may output the irradiated light as an image. The image sensor 810 may be, for example, a charge coupled device (CCD), a metal oxide semi-conductor (MOS), a CPD, or a CID. However, the type of the image sensor is not limited thereto.

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

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

In addition, 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 acuity of the eye, or the lens It may be included in an optical instrument for the purpose of recording and reproducing images by, or for optical measurement, propagation or transmission of images. For example, the optical device according to the embodiment includes a mobile phone, a mobile phone, a smart phone, a portable smart device, a digital camera, a laptop computer, a digital broadcasting terminal, PDA (Personal Digital Assistants), PMP (Portable Multimedia Player) ), navigation, and the like, but is not limited thereto, and any device for taking an image or picture is possible.

16 shows a perspective view of a portable terminal 200A according to an embodiment, and FIG. 17 shows a configuration diagram of the portable terminal 200A shown in FIG. 16.

16 and 17, the portable terminal (200A, hereinafter referred to as "terminal") is a body 850, a wireless communication unit 710, A/V input unit 720, sensing unit 740, input / It may include an output unit 750, a memory unit 760, an interface unit 770, a control unit 780, and a power supply unit 790.

The body 850 shown in FIG. 16 is a bar shape, but is not limited thereto, and two or more sub-bodies are slide-type, folder-type, and swing-type that are movably coupled. , It can be of various structures such as swivel type.

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 the wireless communication system or between the terminal 200A and the network where the terminal 200A is located. For example, the wireless communication unit 710 may 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 shown in FIG. 15.

The sensing unit 740 displays the current state of the terminal 200A, such as an open/closed state of the terminal 200A, a location of the terminal 200A, presence or absence of user contact, orientation of the terminal 200A, acceleration/deceleration of the terminal 200A, and the like. Sensing may be generated to sense and control the operation of the terminal 200A. For example, when the terminal 200A is in the form of a slide phone, it can sense whether the slide phone is opened or closed. In addition, it is responsible for sensing functions related to whether the power supply unit 790 is powered or not, and whether the interface unit 770 is coupled to an external device.

The input/output unit 750 is for generating input or output related to vision, hearing, 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 key pad 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 the 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 the display (3D display).

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

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

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

The interface unit 770 serves as a passage connecting to an external device connected to the terminal 200A. The interface unit 770 receives data from an external device, receives power, transfers it to each component inside the terminal 200A, or allows data inside the terminal 200A to be transmitted to the 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 audio I/O (Input/ Output) port, a video input/output (I/O) port, and an earphone port.

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

The control unit 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 to recognize handwriting input or picture drawing input performed on a touch screen as text 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 the operation of each component.

Features, structures, effects, and the like described in the above embodiments are included in at least one embodiment of the present invention, and are not necessarily limited to only one embodiment. Furthermore, features, structures, effects, and the like exemplified 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. Therefore, it should be interpreted that contents related to such combinations and modifications are included in the scope of the present invention.

Claims (11)

housing;
A bobbin disposed in the housing;
A magnet disposed on the bobbin;
A base disposed under the housing; And
It is disposed between the housing and the base, and includes a substrate including a coil facing the magnet in the optical axis direction,
The coil is provided with a driving signal,
A lens driving device in which the bobbin is moved in the optical axis direction by interaction between the coil and the magnet. According to claim 1,
The substrate,
A coil substrate on which the coil is formed; And
And a circuit board disposed between the coil substrate and the base and including first and second terminals electrically connected to the coil. According to claim 1,
The magnet is a single-pole magnetized magnet including an N-pole and an S-pole divided in the optical axis direction. According to claim 1,
The coil is a lens driving device spaced apart from the housing and the bobbin. According to claim 1,
The magnet includes a plurality of magnets,
The coil includes a plurality of coil units corresponding to the plurality of magnets,
The plurality of coil units is a lens driving device connected in series. According to claim 2,
The coil substrate includes first and second pads electrically connected to the coil,
The circuit board includes first and second pads electrically connected to the first and second pads of the coil substrate,
The first and second pads of the circuit board are a lens driving device that is electrically connected to the first and second terminals of the circuit board. According to claim 1,
Further comprising a position sensor disposed on the substrate,
The position sensor is a lens driving device for outputting an output signal according to the result of sensing the intensity of the magnetic field of the magnet disposed on the bobbin moving in the optical axis direction. The method of claim 7,
The position sensor is a lens driving device that overlaps the magnet in the optical axis direction. According to claim 1,
An upper elastic member coupled with an upper portion of the bobbin and an upper portion of the housing; And
Further comprising a lower elastic member coupled to the lower portion of the bobbin and the lower portion of the housing,
The substrate is a lens driving device disposed under the lower elastic member. The method of claim 5,
Each of the coil units is a closed curve having a central hole, and the central hole is formed to face the optical axis direction. According to claim 1,
The substrate is a body disposed on the base; And
A lens driving device that is bent from the upper surface of the body to the outer surface of the base, and includes a terminal portion on which the first and second terminals are formed.

Images