KR20190085307A - 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 driving apparatus comprises: a housing including a first corner and a second corner neighboring the first corner; a bobbin disposed in the housing; a coil disposed in the bobbin; a first magnet disposed at the first corner of the housing; a second magnet disposed at a third corner of the housing facing the first corner of the housing; a position sensor disposed in the housing; and a sensing magnet corresponding to the position sensor and placed in the bobbin. A first area of a first portion of the coil disposed on one side of the bobbin corresponding to the first corner of the housing is greater than a second area of a second portion of the coil disposed on the other side of the bobbin corresponding to the second corner of the housing.

Description

TECHNICAL FIELD [0001] The present invention relates to a lens driving device, a camera module including the lens driving device,

Embodiments relate to a lens driving apparatus, a camera module including the lens driving apparatus, and an optical apparatus.

It is difficult to apply the technology of a voice coil motor (VCM) used in a conventional camera module to a camera module for ultra small size and low power consumption, and related research has been actively conducted.

Demand and production of electronic products such as smart phones and mobile phones equipped with cameras are increasing. The camera for mobile phones is becoming more compact and smaller, and accordingly, the actuator is also becoming smaller, larger diameter, and multi-functional. In order to realize a high-resolution cellular phone camera, additional functions such as performance improvement of the cellular phone camera, autofocusing, shutter shake improvement, and zoom function are required.

Embodiments provide a lens driving device capable of suppressing spatial interference between a position sensor and a bobbin, realizing a large diameter, and realizing a thin shape, a camera module including the lens driving device, and an optical device.

A lens driving apparatus according to an embodiment includes: a housing including a first corner and a second corner adjacent to the first corner; A bobbin disposed within the housing; A coil disposed in the bobbin; A first magnet disposed at the first corner of the housing; A second magnet disposed at a third corner of the housing facing the first corner of the housing; A position sensor disposed in the housing; And a sensing magnet disposed on the bobbin, the first area corresponding to the position sensor, the first area of the first portion of the coil disposed on one side of the bobbin corresponding to the first corner of the housing, Is greater than a second area of the second portion of the coil disposed on the other side of the bobbin corresponding to the second corner of the bobbin.

The second area may be smaller than the third area of the third portion of the coil connecting the first portion of the coil and the second portion of the coil.

The ratio of the second area to the first area may be 1: 2 to 1: 4.

The third corner facing the first corner in a first diagonal direction, the housing having a fourth corner facing the second corner in a second diagonal direction, and a third corner positioned between the first corner and the fourth corner A first side, a second side disposed between the second corner and the third corner, a third side disposed between the first corner and the second corner, and a third side disposed between the third corner and the fourth corner, Wherein the first diagonal direction is a direction passing through the center of the housing and toward the third corner portion from the first corner, the second diagonal direction passing through the center of the housing, A direction from the second corner toward the fourth corner, and a magnet may not be disposed at the second corner and the fourth corner of the housing.

The sides of the bobbin may be symmetrical with respect to a first diagonal line that is a straight line in the first diagonal direction and may be symmetrical with respect to a second diagonal line that is a straight line in the second diagonal direction.

Wherein the side of the bobbin is asymmetrical with respect to the first center line and asymmetrical with respect to the second center line when viewed from the top, the first center line passing through the center of the housing, The second centerline may be a straight line passing through the center of the housing and in a direction from the third side of the housing toward the fourth side of the housing.

A circuit board disposed on the first side of the housing and electrically connected to the position sensor; And a balancing magnet disposed on the bobbin.

The lens driving device includes: a base disposed below the bobbin; And a first spring and a second spring disposed between the bobbin and the base and spaced apart from each other, wherein the first spring has a first bonding part to which one end of the coil is connected, and a second bonding part electrically connected to the circuit board And the second spring may include a third bonding portion to which the other end of the coil is connected and a fourth bonding portion that is electrically connected to the circuit board.

Wherein one end of the first magnet is disposed at the first side of the housing, the other end of the first magnet is disposed at the third side of the housing, and one end of the second magnet is connected to the second side of the housing Wherein at least a portion of the position sensor in a direction from the first side of the housing to the second side of the housing is disposed in the second side of the housing, It can be overlapped with the magnet.

A Hall sensor for generating an output according to a result of sensing the intensity of the magnetic force of the sensing magnet; And a driver for outputting a first drive signal for driving the Hall sensor and a second drive signal for driving the coil.

The embodiment can suppress the spatial interference between the position sensor and the bobbin, and at the same time, the large diameter can be realized, and a thin shape can be realized.

1 is a perspective view of a lens driving apparatus according to an embodiment.
2 is an exploded view of the lens driving apparatus of FIG.
Fig. 3 shows a coupling diagram of the lens driving apparatus excluding the cover member.
4 is a perspective view of the bobbin shown in Fig.
5 is a perspective view of the bobbin and the coil.
6 is a perspective view of the housing shown in Fig.
Fig. 7 is a perspective view of the housing, the position sensor, and the circuit board shown in Fig. 2;
8 is a cross-sectional view of the lens driving device in the AB direction shown in Fig.
9 is a sectional view of the lens driving device in the CD direction shown in Fig.
10 shows a bottom view of the lower elastic member and the circuit board coupled to the housing.
11 shows a lower elastic member, a base, and a circuit board.
Figure 12 shows a top view of the bobbin and housing shown in Figure 3;
13 shows the arrangement of a coil, a first magnet, a second magnet, a circuit board, and a position sensor, a sensing magnet and a balancing magnet.
14 shows the arrangement of the bobbin, the first magnet, the second magnet, the circuit board, and the position sensor.
Fig. 15 shows an embodiment of the position sensor shown in Fig.
16 is an exploded perspective view of the camera module according to the embodiment.
17 is a perspective view of a portable terminal according to an embodiment.
Fig. 18 shows a configuration diagram of the portable terminal shown in Fig.

BRIEF DESCRIPTION OF THE DRAWINGS The above and other objects, features and advantages of the present invention will be more apparent from the following detailed description taken in conjunction with the accompanying drawings, in which: FIG.

In describing an embodiment, when it is described as being formed "on or under" of each element, an upper or lower (on or under) Wherein both elements are in direct contact with each other or one or more other elements are indirectly formed between the two elements. Also, when expressed as "on or under", it may include not only an upward direction but also a downward direction with respect to one element.

Also, the terms "first" and "second", "upper / upper / upper" and "lower / lower / lower" used in the following description are intended to mean any physical or logical relationship or order May be used solely to distinguish one entity or element from another entity or element, without necessarily requiring or implying that such entity or element is a separate entity or element. The same reference numerals denote the same elements throughout the description of the drawings.

It is also to be understood that the terms "comprises", "comprising", or "having" as used herein are meant to imply that a component can be implied unless specifically stated to the contrary, But should be construed to include other elements.

Hereinafter, a lens driving apparatus according to an embodiment will be described with reference to the accompanying drawings. For convenience of explanation, the lens driving apparatus according to the embodiment is described using the Cartesian coordinate system (x, y, z), but may be described using another coordinate system, and the embodiment is not limited to this. In the drawings, the x-axis and the y-axis indicate directions perpendicular to the z-axis, which is the optical axis direction, the z-axis direction as the optical axis direction is referred to as a first direction, the x-axis direction is referred to as a second direction, The axial direction can be referred to as a 'third direction'.

The lens driving apparatus according to the embodiment can perform "auto focusing function ".

'Auto focusing' refers to automatically focusing the image of the subject on the image sensor surface.

1 is an exploded view of the lens driving apparatus 100 of FIG. 1, and FIG. 3 is a perspective view of the lens driving apparatus 100 excluding the cover member 300. FIG. Lt; / RTI >

The lens driving apparatus 100 includes a bobbin 110, a coil 120, a first magnet 130-1, a second magnet 130-2, a housing 140, an upper elastic member 150, , And a lower elastic member (160).

The lens driving apparatus 100 may further include a position sensor 170, a circuit board 190, and a sensing magnet 180 for AF feedback driving. Further, the lens driving apparatus 100 may further include a balancing magnet 185. Further, the lens driving apparatus 100 may further include a cover member 300, and a base 210.

Next, the bobbin 110 will be described.

The bobbin 110 is disposed inside the housing 140 and moves in the optical axis direction or in the first direction 130 by electromagnetic interaction between the coil 120 and the first and second magnets 130-1 and 130-2 For example, the Z-axis direction).

FIG. 4 is a perspective view of the bobbin 110 shown in FIG. 1, and FIG. 5 is a perspective view of the bobbin 110 and the coil 120.

4 and 5, the bobbin 110 may be mounted with a lens or a lens barrel, and may be disposed within the housing 140. The bobbin 110 may have an opening for mounting a lens or lens barrel, and the shape of the opening may be circular, elliptical, or polygonal, but is not limited thereto.

The bobbin 110 includes a first engaging portion 115 disposed on the upper surface and engaged with and fixed to the first inner frame 151 of the upper elastic member 150 and a second engaging portion 115 disposed on the lower surface of the lower elastic member 160, And second engaging portions 32a and 32b which are engaged with and fixed to the inner frame 161. [

The bobbin 110 may have a first stopper 113 protruding upward from the upper surface thereof and a second stopper 117 protruding downward from the lower surface thereof. The first stopper 113 and the second stopper 117 of the bobbin 110 move when the bobbin 110 moves in the first direction for autofocusing by an external impact or the like, It is possible to prevent the upper surface or the lower surface of the bobbin 110 from directly colliding with the inner wall of the cover member 300 or the upper surface of the base 210.

In FIGS. 4 and 5, the first and second engaging portions 115, 32a, and 32b may be planar, but not limited thereto, and in other embodiments, they may be protrusions or grooves.

The bobbin 110 may have a first escape groove 112a provided in one region of the upper surface corresponding to or aligned with the first frame connecting portion 153 of the upper elastic member 150. [

The bobbin 110 may have a second escape groove 112b in one area of the lower surface corresponding to or aligned with the second frame connecting portion 163 of the lower elastic member 160. [

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

The bobbin 110 may include a plurality of sides. For example, the sides of the bobbin 110 may be lateral or outer sides of the bobbin 110.

For example, the bobbin 110 may include sides or sides 110b-1 through 110b-4, 110c-1 through 110c-4.

The bobbin 110 may include a groove 105 provided in the side or side portions 110b-1 to 110b-4, 110c-1 to 110c-4 for the seating of the coil 120. [

The holes 105 may be recessed from the side portions 110b-1 to 110b-4, 110c-1 to 110c-4 of the bobbin 110 and may be in the shape of a closed curve, for example, a ring.

The bobbin 110 also includes a first seating groove for seating the sensing magnet 180 on any one of the side portions 110b-1 to 110b-4, 110c-1 to 110c-4 And the bobbin 110 may include a balancing magnet 185 at any other one of the side portions 110b-1 through 110b-4, 110c-1 through 110c-4 (e.g., 110b-3) And a second seating groove 185a for seating.

At least one of the upper side and the lower side of the first and second seating grooves 180a and 185 may be opened for convenience of mounting the sensing magnet 180 and the balancing magnet 185. [

For example, for the positioning of the sensing magnet 180 and the balancing magnet 185, the bobbin 110 may be provided on the side or outer surface of two other opposite sides (e.g., 110b-1, 110b-3) And may have seating grooves 180a and 185a.

The first and second seating grooves 180a and 185a are formed in the side surface or the outer side surface of the side portion 110b-3 of the bobbin 110 in the side or outer side direction of the side portion 110b-4 of the bobbin 110, However, the present invention is not limited thereto, and in other embodiments, the first and second seating grooves 180a and 185a may be arranged to overlap with each other.

The shape of each of the first and second seating grooves 180a and 185a may correspond to any one of the shapes of the sensing magnet 180 and the balancing magnet 185.

One end or the other end of the coil 120 is connected to the first bonding portion 61a of the first lower spring 160a and the third bonding portion 61b of the second lower spring on the lower, A groove 33 may be provided for facilitating connection.

Referring to FIGS. 4 and 14, the bobbin 110 may include at least one opening 106 for exposing a portion of the mounted coil 120 to the upper surface of the bobbin 110. The formation of the opening 106 for exposing a part of the coil 120 in this manner can reduce the mass (or weight) of the bobbin 110 and reduce the vibration of the moving part (for example, the bobbin 110) It is possible to increase the first resonance frequency and the second resonance frequency with respect to the resonance frequency, thereby suppressing oscillation of the vibration of the movable portion.

The minimum thickness P1 of the side portion 110c-1 of the bobbin 110 may be 0.35 [mm] to 0.5 [mm]. The minimum thickness for forming the side portion of the bobbin 110 by the injection process may be 0.15 mm and the thickness of the coil 120 (for example, 0.2 mm) is taken into consideration.

Next, the coil 120 will be described.

The coil 120 is disposed on the side surface of the bobbin 110 or on the outer surface of the side portions 110b-1 to 110b-4, 110c-1 to 110c-4.

For example, the coil 120 may be disposed in the groove 105 of the bobbin 110.

For example, the coil 120 may have a closed curve, for example, a ring shape, surrounding the side surface of the bobbin 110, or the outer surface of the side portions 110b-1 to 110b-4, 110c-1 to 110c-4.

For example, the coil 120 may have an octagonal shape, but is not limited thereto.

The coil 120 may wrap the outer surface of the bobbin 110 in a direction rotating about the optical axis OA.

The coil 120 may be directly wound on the outer surface of the bobbin 110 but is not limited thereto and according to another embodiment the coil 120 may be disposed on the bobbin 110 in the form of a coil ring or a coil block It is possible.

The coil 120 is provided with a drive signal for AF operation.

An electromagnetic force can be formed through an electromagnetic interaction between the coil 120 and the magnet 130 when a drive signal (e.g., a drive current) is supplied to the coil 120. An electromagnetic force is generated in the direction of the optical axis OA The bobbin 110 can be moved.

At the initial position of the AF moving part, the bobbin 110 can be moved upward or downward (e.g., in the Z axis direction), which is referred to as bidirectional driving of the AF moving part. Alternatively, at the initial position of the AF moving part, the bobbin 110 can be moved upward, which is referred to as unidirectional driving of the AF moving part.

In the initial position of the AF moving part, the coil 120 is perpendicular to the optical axis OA and parallel to the straight line passing the optical axis, the first and second magnets 130-1, 130-2, 2, respectively, or overlap each other.

For example, the AF moving part may include a bobbin 110, and configurations (e.g., coil 120, sensing magnet 180, and balancing magnet 185) coupled to the bobbin 110.

The initial position of the AF moving part is the initial position of the AF moving part without applying power to the coil 1120 or the AF moving part is positioned as the upper and lower elastic members 150 and 160 are elastically deformed only by the weight of the AF moving part Position.

The initial position of the bobbin 110 is determined such that the gravitational force acts in the direction of the base 210 from the bobbin 110 or vice versa and the gravitational force acts on the base 210 in the bobbin 110 direction Lt; / RTI >

Next, the sensing magnet 180 and the balancing magnet 185 will be described.

The position sensor 180 can detect a change in the intensity of the magnetic field of the sensing magnet 180 as the bobbin 110 moves.

The balancing magnet 185 may be a balancing magnet for balancing the weight with the sensing magnet 180. The weight of the AF moving part can be balanced by the balancing magnet 185, so that an accurate AF operation can be performed. In another embodiment balancing magnet 185 may be omitted.

The sensing magnet 180 may be disposed on one of two opposing sides of the bobbin 110 and the balancing magnet 185 may be disposed on the other of the two opposing sides of the bobbin 110 .

For example, the sensing magnet 180 may be disposed in the first seating groove 180a of the bobbin 110, and the balancing magnet 185 may be disposed in the second seating groove 185a of the bobbin 110.

A portion of one surface of the sensing magnet 180 mounted on the first seating groove 180a of the bobbin 110 and / or a portion of the balancing magnet 185 mounted on the second seating groove 185a A portion of the bobbin 110 may be exposed from the outer surface of the bobbin 110, but the present invention is not limited thereto. In other embodiments, the bobbin 110 may not be exposed to the outer surface of the bobbin 110.

Each of the sensing magnet 180 and the balancing magnet 185 may be a single pole magnet disposed on the upper surface in the N pole and the lower surface on the lower pole in the S pole. However, the sensing magnet 180 and the balancing magnet 185 may be arranged in opposite polarities.

For example, each of the sensing magnet 180 and the balancing magnet 185 may be disposed such that the interface between the N-pole and the S-pole is parallel to the direction perpendicular to the optical axis, but is not limited thereto. For example, in another embodiment, the interface between the N pole and the S pole may expand with the optical axis.

Or in other embodiments, each of sensing magnet 180 and balancing magnet 185 may be a bipolar magnet. At this time, the bipolar magnet includes a first magnet portion including an N pole and an S pole, a second magnet portion including an S pole and an N pole, and a nonmagnetic bulkhead located between the first magnet portion and the second magnet portion can do.

The sensing magnet 180 can be moved along with the bobbin 110 in the optical axis direction OA by the electromagnetic force caused by the interaction between the coil 120 and the first and second magnets 130-1 and 130-2 And the position sensor 170 disposed in the housing 140 can sense the intensity of the magnetic field of the sensing magnet 180 moving in the optical axis direction and output an output signal according to the sensed result. The control unit 830 of the camera module 200 or the control unit 780 of the terminal 200A detects the displacement of the bobbin 110 in the direction of the optical axis based on the output signal output from the position sensor 170 .

Next, the housing 140 will be described.

The housing 140 houses the bobbin 110 on which the coil 120, the sensing magnet 180, and the balancing magnet 185 are disposed.

6 is a perspective view of the housing 140 shown in Fig. 2, Fig. 7 is a perspective view of the housing 140, the position sensor 170, and the circuit board 190 shown in Fig. 2, 9 is a cross-sectional view of the lens driving apparatus 100 in the CD direction shown in Fig.

6 and 7, the housing 140 supports the first and second magnets 130-1 and 130-2, and the AF moving part, for example, the bobbin 110 can move in the first direction So as to accommodate the bobbin 110 inside.

The housing 140 supports the first and second magnets 130-1 and 130-2, the position sensor 170, and the circuit board 190. In FIGS. 1 to 4, the first and second magnets 130-1 and 130-2 are disposed in the housing 140, but the embodiment is not limited thereto. In other embodiments, the first and second magnets 130-1 and 130-2 may be disposed on the inner side of the side plate of the cover member 300, or on the base 210. [ The configuration according to the embodiment in which the first and second magnets 130-1 and 130-2 are disposed can be referred to as a " fixed portion ", and the fixed portion includes the housing 140, the cover member 300, Lt; RTI ID = 0.0 > 210 < / RTI > For example, in other embodiments, instead of the housing 140, the first and second magnets may be disposed on the cover member 300 or the base 210, in which case the housing 140 may be omitted or omitted .

The housing 140 may be in the form of a column with an opening and may include a plurality of sides (e.g., 141-1 through 141-4) and a plurality of corners (e.g., 142-1 through 142-4) . Here, the corner portions may be expressed as "corners ".

For example, the housing 140 may include side portions (e.g., 141-1 through 141-4) and corner portions (e.g., 142-1 through 142-4) that form a polygonal (e.g., . ≪ / RTI >

The housing 140 includes first to fourth side portions 141-1 to 141-4 which are spaced apart from each other, first and second side portions 141-1 to 141-4 which are located between the first side portion 141-1 and the third side portion 141-3, A second corner portion 142-2 positioned between the second side portion 141-2 and the third side portion 141-3, a second side portion 141-2 and a fourth side portion 141-2 A fourth corner portion 142-3 positioned between the fourth side portion 141-4 and the first side portion 141-1 and a third corner portion 142-3 positioned between the first side portion 141-1 and the first side portion 141-1, .

For example, the first side 141-1 and the second side 141-2 of the housing 140 can face each other, and the third side 141-3 and the fourth side 141 -4) can face each other.

The third side 141-3 and the fourth side 141-4 of the housing 140 can be disposed between the first side 141-2 and the second side 141-2 of the housing 140 have.

For example, the housing 140 may include a first corner (or a first corner 142-1), a second corner (or a second corner 142-2) adjacent to the first corner 142-1, (Or third corner 142-3) facing the first corner portion 142-1 in the first diagonal direction, the second corner portion 142-2 and the second corner portion 142-2 in the second diagonal direction (Or a fourth corner 142-4), a first side 141-1 disposed between the first corner 142-1 and the fourth corner 142-4, A second side portion 141-2 disposed between the second corner portion 142-2 and the third corner portion 142-3, a first corner portion 142-1 and a second corner portion 142-2 And a fourth side portion 141-4 disposed between the third corner portion 142-3 and the fourth corner portion 142-4. The third side portion 141-3 is disposed between the third corner portion 142-3 and the fourth corner portion 142-4. have.

For example, each of the first to fourth sides (or the first to fourth outer sides) of the housing 140 may be formed in the first to fourth sides 141-1 to 141-4 of the housing 140 May be any corresponding lateral or outer surface.

Each of the first to fourth sides 141-1 to 141-4 of the housing 140 may be disposed in parallel with any one of the side plates of the cover member 300. [

The housing 140 has a first opening 17a and a second opening 17b provided in the first corner portion 141-1 of the housing 140 for mounting the first and second magnets 130-1 and 130-2. And a second opening 17b provided in the third corner portion 142-3 of the second corner portion 140. [

6, the first opening 17a and the second opening 17b are in the form of a through hole passing through the first and third corner portions 142-1 and 142-3 of the housing 140. However, In another embodiment, the housing 140 has a seating groove on the first and third corner portions 142-1 and 142-3 for mounting the first and second magnets 130-1 and 130-2. You may.

For example, the first opening 17a is formed in the housing 140 such that the first corner 141-1 of the first side 141-1 of the housing 140 adjacent to the first corner 142-1, And one side of the third side 141-3.

For example, the second opening 17b allows the housing 140 to be in contact with the third corner portion 142-3, the second side 141-2 of the housing 140 adjacent to the third corner portion 142-3, And one side of the fourth side 141-4.

The first magnet 130-1 mounted on the first opening 17a and the second magnet 130-2 mounted on the second opening 17a are detached to the inside of the housing 140 A stopper (not shown) may be provided on the inner surface of at least one of the side portions 141-1 to 141-4.

An adhesive member for adhering or attaching the first magnet 130-1 and the second magnet 130-2 to the housing 140 may be disposed between the housing 140 and the first and second magnets 130-1 and 130- -2).

In order to prevent the cover member 300 from directly colliding with the inner surface of the upper plate, the housing 140 may include a stopper 143 provided on the upper, upper surface, or upper surface.

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 have at least one protrusion 144 provided on the top, top or top of the housing 140 for engagement with the holes of the first outer frame 152 of the upper elastic member 150 . For example, at least one protrusion 144 may be disposed on at least one of the first through fourth corner portions 142-1 through 142-4, but is not limited thereto.

7, the housing 140 may be provided on the lower, lower, or lower ends of the housing 140 for engagement with and fixing the holes 162a of the second outer frame 162 of the lower elastic member 160 At least one protrusion 147 may be provided.

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

A guide groove 148 corresponding to the protrusion 216 of the base 210 is formed on the lower portion, the lower end or the lower surface of at least one of the first to fourth corner portions 142-1 to 142-4 of the housing 140 .

For example, the guide groove 148 of the housing 140 and the protrusion 216 of the base 210 can be engaged by the adhesive member, and the housing 140 can be engaged with the base 210. [

The housing 140 is provided with the first to fourth side portions 141 to 141 so as to avoid spatial interference with the first frame connecting portion 153 of the upper elastic member 150 and the portion to which the first outer frame 151 is connected, (Not shown) provided at an upper portion, an upper surface, or an upper portion of at least one of the first to sixth embodiments.

The housing 140 is also provided with first to fourth side portions 141 and 141 so as to avoid spatial interference with a portion where the second frame connecting portion 163 and the second outer frame 161 of the lower elastic member 160 are connected, (Not shown) provided on at least one of a lower surface, a lower surface, or a lower end of at least one of the first through fourth embodiments.

In order to inject the dampers 15a and 15b, the housing 140 includes damping application grooves 22a provided at the bottom, bottom, or bottom of at least one of the first through fourth sides 141-1 through 141-4 , 22b.

For example, the first and second side portions 141-1 and 141-2 of the housing 140 facing each other may be provided with the padding application grooves 22a and 22b.

Also, in order to seat the circuit board 190, the housing 140 may have a seating groove 13a provided in one of the side portions 141-1 to 141-4.

In addition, in order to seat the position sensor 170, the housing 140 may include an opening 17c provided in any one of the side portions 141-1 to 141-4.

For example, the opening 17c may be disposed in the seating groove 13b of the housing 140, and in FIG. 6, the seating portion 17c may be an opening through the first side 141-1 of the housing 140 But the seating portion for seating the position sensor 170 in other embodiments may be in the form of a groove. The seat portion 17c may have a shape corresponding to or coincident with the position sensor 190, but is not limited thereto.

Next, the first and second magnets 130-1 and 130-2 will be described.

The first and second magnets 130-1 and 130-2 are disposed at two opposite corner portions of the corner portions 142-1 to 142-4 of the housing 140, respectively.

For example, the first magnet 130-1 may be inserted or disposed in the first opening 17a provided in the first corner portion 142-1 of the housing 140, At least a portion thereof may be exposed from the outer surface of the housing 140 through the first opening 17a.

The second magnet 130-2 may be inserted or disposed in the second opening 17b provided in the third corner portion 142-3 of the housing 140 and at least part of the second magnet 130-2 May be exposed from the outer surface of the housing 140 through the second opening 17b.

The shape of each of the first and second magnets 130-1 and 130-2 may be a polyhedral shape that is easy to be seated at the corners of the housing 140. [

For example, the sectional shape in the direction perpendicular to the optical axis of each of the first and second magnets 130-1 and 130-2 may be a triangle (for example, isosceles triangle), but the present invention is not limited thereto, The cross-sectional shape may be trapezoidal.

For example, in the first and second magnets 130-1 and 130-2, the lengths in the transverse direction of the remaining two sides other than the first surface facing the coil 120 may be different from each other.

For example, in the direction toward the corner portion 142-1 or 142-3 of the housing 140 in which the first magnet 130-1 or the second magnet 130-2 is disposed at the center of the housing 140 The length (M, see Fig. 13) in the transverse direction of the first magnet or the second magnet 130-1 or 130-2 may gradually decrease.

Here, the transverse direction may be a direction parallel to the lateral direction of either the first magnet 130-1 facing the coil 120 or the second magnet 130-2.

Each of the first and second magnets 130-1 and 130-4 may be formed as a single body. A first surface facing the coil 120 is referred to as an S pole, a second surface opposite to the first surface, Can be arranged so as to be N poles. However, the present invention is not limited thereto, and in another embodiment, the first surface and the second surface of each of the first and second magnets 130-1 and 130-2 may be an N pole and a S pole.

The first and second magnets 130-1 and 130-2 may be disposed or installed only at the first and third corner portions 142-1 and 142-2 of the housing 140, The first and second magnets may not be disposed at the second and fourth corner portions 142-1 and 142-4.

Next, the position sensor 170 and the circuit board 190 will be described.

The circuit board 190 and the position sensor 170 may be disposed on any one of the sides of the housing 140. For example, the circuit board 190 and the position sensor 170 may be disposed on the first side 141-1 or the second side 141-2 of the housing 140.

For example, the circuit board 190 and the position sensor 170 may be disposed on the first side (or first outer side) of the housing 140 or on the second side (or second outer side) of the housing 140 .

For example, the circuit board 190 may be disposed in a seating groove 13a provided in the first side 141-1 of the housing 140. [ An adhesive member may be disposed between the circuit board 190 and the first side 141-1 of the housing 140 to fix the circuit board 190 to the housing 140. [ The circuit board 190 may have a hole or protrusion and the first side of the housing 140 may have a protrusion (or hole) for engaging with a hole (or protrusion) of the circuit board 190 It is possible.

The circuit board 190 includes a first surface on which the position sensor 170 is mounted or disposed and a second surface that is opposite to the first surface and a second surface on which the position sensor 170 is mounted on the second surface of the circuit board 190 And may include a plurality of terminals 19-1 to 19-4 arranged therein.

For example, the plurality of terminals 19-1 to 19-4 may be arranged in a line at the lower end of the second surface of the circuit board 190, but the present invention is not limited thereto.

The circuit board 190 in the embodiment shown in FIG. 3 includes four terminals 19-1 through 19-4), but it is not limited thereto, and may be five or more in other embodiments.

The circuit board 190 may include circuit patterns or wires for electrically connecting the position sensor 190 and the terminals 19-1 to 19-4.

The position sensor 170 may be mounted or disposed on the first side of the circuit board 190, e.g., the first side of the top portion S1 (see FIG. 11).

The position sensor 170 may be disposed on the seat portion 17c provided on the first side 141-1 of the housing 140. [

The position sensor 170 disposed at the housing 140 at the initial position of the bobbin 110 is positioned on the first side or the first side 141-1 of the housing 140 on the second side of the housing 140, And may overlap with the sensing magnet 180 in the direction of the two sides 141-2, but is not limited thereto.

8 and 9, at the initial position of the bobbin 110, the height of the top surface (or top) of the first and second magnets 130-1 and 130-2 is greater than the height of the top or top But the present invention is not limited thereto.

At the initial position of the bobbin 110, the height of the upper surface (or upper end) of the position sensor 170 may be lower than or equal to the height of the upper surface (or upper end) of the sensing magnet 180, but is not limited thereto.

The height of the upper surface (or the upper end) of the coil 120 may be lower than or equal to the height of the upper surface (or upper end) of the sensing magnet 180, but is not limited thereto.

In an alternative embodiment, in the initial position of the bobbin 110, the first side 141-1 of the housing 140 or the second side 141-2 of the housing 140 The position sensor 170 and the sensing magnet 180 may not overlap with each other.

The position sensor 170 disposed at the housing 140 at the initial position of the bobbin 110 is positioned on the first side or the first side 141-1 of the housing 140 on the second side of the housing 140, But may not overlap with the balancing magnet 180 in the direction of the two sides 141-2, but the present invention is not limited thereto. In other embodiments, they may overlap.

The position sensor 170 disposed at the housing 140 at the initial position of the bobbin 110 is positioned on the first side or the first side 141-1 of the housing 140 on the second side of the housing 140, And may not overlap with the coil 120 in the direction of the two sides 141-2.

The position sensor 170 disposed in the housing 140 at the initial position of the bobbin 110 may also be positioned on the first side or first side 141-1 of the housing 140 or on the second side of the housing 140 And may not overlap with the first magnet 130-1 in the direction of the second side 141-2.

The position sensor 170 disposed at the housing 140 at the initial position of the bobbin 110 is positioned on the first side or the first side 141-1 of the housing 140 on the second side of the housing 140, The second magnet 130-1 may overlap with the second side 141-2.

The position sensor 170 can detect the intensity of the magnetic field of the sensing magnet 180 mounted on the bobbin 110 and can output an output signal corresponding to the sensed result Can be output.

The position sensor 170 may be implemented as a driver including a Hall sensor.

Fig. 15 shows an embodiment of the position sensor 170 shown in Fig.

Referring to FIG. 15, the first position sensor 170 may include a Hall sensor 61, and a driver 62.

For example, the hall sensor 61 may be made of a silicon-based material, and the output VH of the hall sensor 61 may increase as the ambient temperature increases. For example, the ambient temperature may be the temperature of the lens driver, for example, the temperature of the circuit board 190, the temperature of the hall sensor 61, or the temperature of the driver 62.

In another embodiment, the Hall sensor 61 may be made of GaAs, and the output VH of the Hall sensor 61 may have a slope of about -0.06% / ° C.

The first position sensor 170 may further include a temperature sensing element 63 capable of sensing an ambient temperature. The temperature sensing element 63 can output the temperature sensing signal Ts to the driver 62 according to the result of measuring the temperature around the first position sensor 170. [

For example, the hall sensor 61 of the first position sensor 190 may generate the output VH according to the result of sensing the intensity of the magnetic force of the sensing magnet 180.

The driver 62 can output the driving signal dV for driving the Hall sensor 61 and the driving signal Id1 for driving the coil 120. [

For example, the driver 62 receives the clock signal SCL, the data signal SDA, the power supply signals VCC and GND from the control units 830 and 780 using data communication using protocol, for example, I2C communication, Lt; / RTI >

The driver 62 outputs a drive signal dV for driving the hall sensor 61 and a drive signal dV for driving the first coil 120 using the clock signal SCL and the power supply signals VCC and GND, (Id1) can be generated.

The first position sensor 170 includes first to fourth terminals for transmitting and receiving the clock signal SCL, the data signal SDA and the power supply signals VCC and GND and a second terminal for supplying a driving signal to the coil 120. [ Fifth, and sixth terminals.

The circuit board 190 may be electrically connected to the first to sixth terminals (not shown) of the first position sensor 170 and may be electrically connected to the fifth terminal of the first position sensor 170 And a second terminal or a second connection terminal 6b electrically connected to the first terminal or the first terminal 6a and the sixth terminal of the first position sensor 170. [

The driver 62 also receives the output VH of the hall sensor 61 and transmits the output VH of the hall sensor 61 using data communication using protocol, It is possible to transmit the clock signal SCL and the data signal SDA to the control units 830 and 780.

The driver 62 also receives the temperature sensing signal Ts measured by the temperature sensing element 63 and transmits the temperature sensing signal Ts to the controller 62 through data communication using protocol, (830, 780).

The control units 830 and 780 can perform temperature compensation on the output VH of the hall sensor 61 based on the ambient temperature change measured by the temperature sensing element 63 of the first position sensor 170 .

Each of the first to fourth terminals of the position sensor 170 may be electrically connected to a corresponding one of the terminals 19-1 to 19-4 of the circuit board 190. [

Each of the fifth and sixth terminals of the position sensor 190 may be electrically connected to a corresponding one of the first and second connection terminals 6a and 6a of the circuit board 190. [

The first and second connection terminals 5a and 6a of the circuit board 190 can be coupled to any one of the bonding portions 61b and 62b of the first and second lower springs 160a and 160b And can be electrically connected. That is, the position sensor 190 may provide a driving signal to the coil 120 through the first and second connection terminals 5a and 6a.

In another embodiment, the position sensor 190 may be implemented as a position detection sensor alone such as a hall sensor or the like. In this case, the circuit board 190 may include four terminals for driving the position sensor 190 implemented by the detection sensor alone and two terminals for providing a driving signal for driving the coil 120 .

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

10 shows a bottom view of the lower elastic member 160 and the circuit board 190 coupled to the housing 140 and Fig. 11 shows the lower elastic member 160, the base 210, and the circuit board 190 .

3, 10, and 11, the upper elastic member 150 and the lower elastic member 160 are coupled to the bobbin 110 and the housing 140, and support the bobbin 110.

For example, the upper elastic member 150 may engage with the upper, upper, or upper end of the bobbin 110 and with the upper, upper, or upper end of the housing 140, Bottom, bottom, or bottom, and bottom, bottom, or bottom of housing 140.

At least one of the upper elastic member 150 or the lower elastic member 160 may be divided or separated into two or more.

For example, the lower elastic member 160 may include a first spring (or a first lower spring 160a) and a second spring (or a second lower spring 160b) that are spaced from each other.

The upper elastic member 150 and the lower elastic member 160 may be realized as leaf springs, but the present invention is not limited thereto and may be realized by a coil spring, a suspension wire, or the like.

The upper elastic member 150 includes a first inner frame 151 coupled with the upper, upper, or upper end of the bobbin 110, a first outer frame 152 coupled with the 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 provided with a first engagement region 151 that is engaged with the first engagement portion 115 of the bobbin 110, But it is not limited thereto.

The first outer frame 152 of the upper elastic member 150 may be provided with a second engagement region coupled with the projection 144 of the housing 140 and the second engagement region may be in the form of a hole, But is not limited thereto.

For example, the upper elastic member 150 may include four first frame connection portions 153, and the first four frame connection portions may include first to fourth corner portions 142-1 to 142-4 of the housing 140 -4). ≪ / RTI >

The first and second lower springs 160a and 160b may be coupled to the bobbin 110. [

The first and second lower springs 160a and 160b may also be coupled to the bobbin 110 and the housing 140.

The first and second lower springs 160a and 160b may be disposed between the bobbin 110 and the base 210.

At least one of the first and second lower springs 160a and 160b includes a second inner frame 161 coupled with a lower portion, a lower portion or a lower portion of the bobbin 110, a lower portion of the housing 140, And a second frame connection portion 163 connecting the second inner frame 161 and the second outer frame 162. The second frame connection portion 163 may include a second frame connection portion 163 connecting the second inner frame 161 and the second outer frame 162,

The second inner frame 161 of at least one of the first and second lower springs 160a and 160b is coupled to the second coupling portions 31a and 31b of the bobbin 110 by soldering or conductive adhesive. May be provided.

At least one hole for engaging with the projection 147 of the housing 140 may be provided on the second outer frame 162 of at least one of the first and second lower springs 160a and 160b.

For example, the second outer frame 162 of the first lower spring 160a may be disposed on the lower or lower surface of one region of the first side 141-1 of the housing 140, the lower portion of the fourth corner 142-4 The bottom or bottom of the fourth side 141-4 of the housing 140 or the bottom or bottom of the third corner 142-2 and the bottom or bottom of one area of the second side 141-2, As shown in FIG.

11, a first bonding portion 61a for coupling one end of the coil 120 to the second outer frame 162 of the first lower spring 160a and a second bonding portion 61b for coupling one end of the coil 120 to the first connection And a second bonding portion 51a for bonding with the terminal 6a or the first terminal may be provided.

For example, the first bonding portion 61a may be provided at one end of the second outer frame 162 of the first lower spring 160a, and the second bonding portion 51a may be provided at one end of the first lower spring 160a, 2 outer frame 162 of the first embodiment.

For example, the first bonding portion 61a may be located on the lower or lower side of the second side 141-2 of the housing 140, and the second bonding portion 51a may be located on the first side 141 of the housing 140 -1).

For example, the second bonding portion 51a may be formed on the circuit board 190 from the outer side of the second outer frame located on the first side 141-1 to facilitate connection with the first connection terminal 6a of the circuit board 190. [ (Not shown).

For example, the second outer frame 162 of the second lower spring 160b may be disposed on the lower or lower surface of another area of the first side 141-1 of the housing 140, The lower or the underside of the third side 141-3 of the housing 140 or the lower or bottom of the second corner 142-2 of the housing 140 and the second side of the housing 140, May be disposed on the lower or lower surface of the other region of the light guide plate 141-2.

A third bonding portion 61b for coupling the other end of the coil 120 to the second outer frame 162 of the second lower spring 160b and a second bonding portion 61b for coupling to the second connection terminal 6b of the circuit board 190 A fourth bonding portion 51b may be provided.

For example, the third bonding portion 61b may be provided at one end of the second outer frame 162 of the second lower spring 160b, and the fourth bonding portion 51b may be provided at one end of the second lower spring 160b 2 outer frame 162 of the first embodiment.

For example, the third bonding portion 61b may be located on the lower or lower side of the second side 141-2 of the housing 140 and the fourth bonding portion 51b may be located on the first side 141 of the housing 140 -1).

For example, the fourth bonding portion 51b may include a second outer frame (not shown) located on the first side 141-1 of the housing 140 to facilitate engagement with the second connection terminal 6b of the circuit board 190 162 protruding from the outer surface of the circuit board 190 toward the circuit board 190.

Each of the second bonding portion 51a and the fourth bonding portion 51b may protrude from the inner side surface of the first side portion 141-1 of the housing 140 toward the outer side.

The second bonding portion 51a and the fourth bonding portion 51b may be spaced apart from each other and may be symmetrical with respect to the center line. However, the present invention is not limited thereto. The center line may be a straight line passing through the center of the opening of the housing 140 and parallel to the direction from the first side 141-1 toward the second side 141-2.

One end of the coil 120 may be coupled to the first bonding portion 61a of the first lower spring 160a by soldering or a conductive adhesive and the other end of the coil 120 may be coupled to the second lower spring 160b 3 bonding portion 61b.

For example, the first bonding portion 61a may be provided with a first guide groove 16a for guiding one end of the coil 120, and the other end of the coil 120 may be guided by the second bonding portion 61b. A second guide groove 16b may be provided.

One drive signal may be provided from the circuit board 190 to the coil 120 by the first to fourth bonding portions 61a, 51a, 61b, and 51b.

Each of the first frame connecting portion 153 and the second frame connecting portions 163, 163-1 and 163-2 of the upper elastic member 150 and the lower elastic member 160 is bent or curved at least once, So that a pattern having a predetermined shape can be formed. The bobbin 110 can be elastically (or elastically) supported by the first and second frame connection portions 153 and 163 in the first direction by the positional change and micro-deformation of the bobbin 110 in the first direction.

The first lower spring 160a is connected to the second inner frame 161 of the first lower spring 160a and includes a first extension portion 53a corresponding to the first damping application groove 22a of the housing 140, . ≪ / RTI >

The first extension portion 53a may extend from one area of the second inner frame 161 of the first lower spring 160a toward the first damping application groove 22a of the housing 140. [

The first extended portion 53a may be located in the first dipping application groove 22a and the damper 15a may be disposed between the first damping application groove 22a and the first extended portion 53a.

The second lower spring 160b is connected to the second inner frame 161 of the second lower spring 160b and has a second extension portion 53b corresponding to the second damping application groove 22b of the housing 140, . ≪ / RTI >

Each of the first and second extensions 53a and 53b may include two protrusions, but the present invention is not limited thereto. In other embodiments, the first and second extensions 53a and 53b may include one or more protrusions.

The second extension portion 53b may extend from one area of the second inner frame 161 of the second lower spring 160b toward the second damping application groove 22b of the housing 140. [

The second extension portion 53b may be located in the second dipping application groove 22b and the damper 15b may be disposed between the second damping application groove 22b and the second extension portion 53b.

The dampers 15a and 15b can absorb and cushion the vibration of the bobbin 110.

The lens driving apparatus 100 may further include a damper (not shown) disposed between the upper elastic member 150 and the housing 140 to absorb and cushion vibration of the bobbin 110.

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

For example, the lens driving apparatus 100 may include a damper (not shown) disposed between the second frame connecting portion 163 of each of the first and second lower springs 160a and 160b and the bobbin 110 (or the housing 140) (Not shown).

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

Next, the base 210 will be described.

10 and 11, the base 210 may have openings corresponding to the openings of the bobbin 110 and / or the openings of the housing 140, and may correspond to or correspond to the cover member 300 For example, a rectangular shape.

The base 210 may have a step 211 at the lower side of the side where the adhesive can be applied when the cover member 300 is adhered and fixed. At this time, the step 211 can guide the cover member 300 coupled to the upper side, and can face the lower end of the side plate of the cover member 300. Between the lower end of the side plate of the base 210 and the step 211 of the base 210, an adhesive member or a sealing member may be disposed or applied.

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

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

A protrusion 216 corresponding to the guide groove 148 of the housing 140 may be provided at an edge of the upper surface of the base 210. For example, the protrusion 216 may be a polygonal columnar shape protruding from the upper surface of the base 210 so as to be perpendicular to the upper surface of the base 210, but is not limited thereto.

The protrusion 216 may be inserted into the guide groove 148 of the housing 140 and may be fastened or coupled with the guide groove 148 by an adhesive member (not shown) such as epoxy or silicone.

The base 210 may have a seating groove 210a for seating the lower end of the circuit board 190 on the side surface corresponding to the circuit board 190. [

For example, the seating groove 210a may be provided on one side of the base 210 corresponding to the first side 141-1 of the housing 140. [

9 and 11, the circuit board 190 may include an upper end portion S1 and a lower end portion S2. The length of the lower end S2 in the transverse direction may be smaller than the length of the upper end S1 in the transverse direction.

The upper end S1 of the circuit board 190 may be disposed in the seating groove 13a of the housing 140. [ The lower end portion S2 of the circuit board 190 may protrude downward from the lower or the lower surface of the housing 140 and may be disposed in the seating groove 210a of the base 210. [

Terminals 19-1 through 19-4 may be disposed on the second side of the lower end S1 of the circuit board 190 and the second bonding on the first side of the lower end S2 of the circuit board 190. [ The first and second connection terminals 6a and 6b for bonding the first and second bonding portions 51a and 51b may be provided.

Next, the cover member 300 will be described.

The cover member 300 accommodates other arrangements 110, 120, 130-1, 130-2, 140, 150, 160, 170, 180, 185, 190 in the receiving space formed with the base 210.

The cover member 300 may be in the form of a box having an open bottom and including an upper plate and side plates and a lower end of the side plates of the cover member 300 may be coupled with an upper portion of the base 210. [ The top plate of the cover member 300 may have a polygonal shape, for example, a quadrangular shape or an octagonal shape, and an opening for exposing a lens (not shown) to external light may be provided on the top plate.

The cover member 300 may be made of a nonmagnetic material such as SUS or plastic to prevent the cover member 300 from adhering to the magnet 130, but the present invention is not limited thereto.

FIG. 12 is a plan view of the bobbin 110 and the housing 140 shown in FIG. 3, and FIG. 13 is a plan view showing the coil 120, the first magnet 130-1, 14 shows the arrangement of the bobbin 110, the first magnet 130-1, the second magnet 130-b, and the position sensor 170, the sensing magnet 180, and the balancing magnet 185, 2, the circuit board 190, and the position sensor 170. [

12, the bobbin 110 includes a first side 11-1 of the side portion 110c-1 corresponding to the first corner portion 142-1 of the housing 140, a first side 11-1 of the housing 140, 2 corresponding to the third corner portion 142-3 of the housing 140 and the third side face 11-3 of the side portion 110c-3 corresponding to the second corner portion 142-2, The fourth side 11-4 of the side portion 110c-4 corresponding to the fourth corner portion 142-4 of the housing 140, the second side 11-2 of the housing 140, The fifth side 11-5 of the side portion 110b-1 corresponding to the side portion 141-1 and the sixth side 11b-2 of the side portion 110b-2 corresponding to the second side portion 141-2 of the housing 140, The seventh side 11-7 of the side portion 110b-3 corresponding to the third side 141-3 of the housing 140 and the fourth side 11-7 of the housing 140 8 of the side portion 110b-4 corresponding to the first side 110b-4.

The first side 11-1 of the bobbin 110 and the second side 11-2 of the bobbin 110 may face each other in the first diagonal direction 502 and the third side The first side 11-3 of the bobbin 110 and the fourth side 11-4 of the bobbin 110 may face each other in the second diagonal direction.

For example, the first diagonal direction 502 passes through the center 501 of the housing 140 and extends from the first corner (or the first corner 142-1) to the third corner (or third corner 142-3 ). ≪ / RTI >

For example, the second diagonal direction 503 passes through the center 501 of the housing 140 and extends from the second corner (or second corner 142-2) to the fourth corner (or fourth corner 142-4 ). ≪ / RTI >

For example, the area (or the length in the transverse direction) of the first side 11-1 or the second side 11-2 of the bobbin 110 may be the third side 11-3 of the bobbin 110, May be larger than the area of the side surface 11-4 (or the length in the transverse direction).

For example, the area (or the length in the transverse direction) of the first side 11-1 of the bobbin 110 is equal to the area (or the length in the transverse direction) of the second side 11-2 of the bobbin 110 .

For example, the area (or the length in the transverse direction) of the third side 11-3 of the bobbin 110 is equal to the area (or the length in the transverse direction) of the fourth side 11-4 of the bobbin 110 .

Further, for example, the area (or the length in the transverse direction) of the fifth side surface 11-5 or the sixth side surface 11-6 of the bobbin 110 may be the same as the first side surface 11-1 of the bobbin 110, (Or the length in the horizontal direction) of the two side faces 11-2.

For example, the area (or the length in the transverse direction) of the fifth side 11-5 of the bobbin 110 is equal to the area (or the length in the transverse direction) of the sixth side 11-6 of the bobbin 110 .

For example, the area of the seventh side surface 11-7 or the eighth side surface 11-8 of the bobbin 110 (or the length in the transverse direction) (Or the length in the transverse direction) of the six side surfaces 11-6.

For example, the area (or the length in the transverse direction) of the seventh side surface 11-7 of the bobbin 110 is equal to the area (or the length in the transverse direction) of the eighth side surface 11-8 of the bobbin 110 .

Each of the first to eighth sides 11-1 to 11-8 of the bobbin 110 may be planar or curved, and in each case the same length or area correlation may be applied. For example, when the third side surface 11-3 and the fourth side surface 11-4 of the bobbin 110 are curved surfaces, the surface area of the curved surface or the length of the curved surface in the transverse direction can be applied.

One end of the first side 11-1 of the bobbin 110 may correspond to or oppose a portion of the first side 141-1 of the housing 140 and may have a first side 11-1 May correspond to or oppose a part of the third side 141-3 of the housing 140. [

One end of the second side 11-2 of the bobbin 110 may correspond to or oppose a portion of the second side 141-2 of the housing 140 and the second side 11- 2 may correspond to or oppose a part of the third side 141-3 of the housing 140. [

The sides of the bobbin 110 may be symmetrical with respect to a first diagonal line that is a straight line in the first diagonal direction 502. [ Further, the side surface of the bobbin 110 may be symmetrical with respect to the second diagonal line, which is a straight line in the second diagonal direction 503.

Further, when the bobbin 110 is viewed from above, the side surface of the bobbin 110 may be asymmetric with respect to the first center line 504. The first center line 504 passes through the center 501 of the housing 140 and extends from the first side 141-1 of the housing 140 toward the second side 141-2 of the housing 140 . ≪ / RTI >

When the bobbin 110 is viewed from above, the side surface of the bobbin 110 may be asymmetrical with respect to the second center line. The second center line 505 passes through the center 501 of the housing 140 and extends from the third side 141-3 of the housing 140 toward the fourth side 141-4 of the housing 140 . ≪ / RTI >

13, a coil 110 (see FIG. 13) disposed on one side 11-1, 11-2 of the bobbin 110 corresponding to the first corner 142-1 or the third corner 142-2 of the housing, The length L1 of one portion 12-1 or 12-5 of the bobbin 110 corresponding to the second corner 142-2 or the fourth corner 142-4 of the housing 140 Is longer than the length L2 of another portion 12-2, 12-6 of the coil 120 disposed on one side face 11-3, 11-4 (L1> L2).

Or the area of one portion 12-1 and 12-5 of the coil 110 disposed on one side 11-1 and 11-2 of the bobbin 110 is larger than the area of the other side 11- 3 and 11-4 of the coils 120. In this case,

For example, the first length L1 (or first area) of one portion 12-1, 12-5 of the coil 120 and the first length L1 of the other portion 12-2, 12-6 of the coil 120 The ratio L2: L1 of the second length L2 (or the second area) may be 1: 2 to 1: 4. For example, the ratio (L2: L1) may be 1: 2.5 to 1: 3.5

When the value L1 / L2 obtained by dividing the first length L1 by the second length L2 is less than 2, the first length L1 is reduced, so that the first and second magnets 130-1 and 130- 2 can be reduced and the AF driving force can be reduced.

When the value L1 / L2 obtained by dividing the first length L1 by the second length L2 is more than 4, the opening size of the bobbin 110 is reduced, and the diameter of the mountable lens barrel is reduced, Can not be realized.

For example, the coil 120 may include a first portion 12-1 disposed on the first side 11-1 of the bobbin 110, a second portion 12-1 disposed on the second side 11-2 of the bobbin 110, A third portion 12-3 disposed on the third side 11-3 of the bobbin 110 and a third portion 12-3 disposed on the fourth side 11-4 of the bobbin 110, A fifth portion 12-5 disposed on the fifth side 11-5 of the bobbin 110 and a sixth portion 12-5 disposed on the sixth side 11-6 of the bobbin 110. [ A seventh portion 12-7 disposed on the seventh side 11-7 of the bobbin 110 and a seventh portion 12-7 disposed on the eighth side 11-8 of the bobbin 110 8 portion (12-8).

For example, the length (or area) of the first portion 12-1 of the coil 120 and the length (or area) of the second portion 12-2 may be greater than the length (or area) of the third portion 12 -3) and the length (or area) of the fourth portion 12-4 (L1 > L2).

For example, the length L3 (or area) of the fifth portion 12-5 of the coil 120 and the length (or area) of the sixth portion 12-6 are greater than the length L3 -3) and the length (or area) of the fourth portion 12-4 (L3 > L2).

For example, the length L4 (or area) of the seventh portion 12-7 of the coil 120 and the length (or area) of the eighth portion 12-8 are greater than the length L4 (L4) (or area) of the sixth portion 12-6 and the length (or area) of the sixth portion 12-6 (L4 > L3).

For example, the first portion 12-1 and the second portion 12-2 of the coil 120 may have the same length (or area) as each other, and the third portion 12-3 of the coil 120, And the fourth portion 12-4 may have the same length or area and the fifth portion 12-5 and the sixth portion 12-6 of the coil 120 may have the same length or area And the seventh portion 12-7 and the eighth portion 12-8 of the coil 120 may have the same length or area as each other.

For example, the length L1 of the first portion 12-1 of the coil 120 may be 2.5 [mm] to 3 [mm]. For example, the length L1 of the first portion 12-1 of the coil 120 may be 2.76 [mm].

For example, the length L2 of the third portion 12-3 of the coil 120 may be 0.75 [mm] to 1.25 [mm]. For example, the length L2 of the third portion 12-3 of the coil 120 may be 0.97 [mm].

For example, the length L3 of the fifth portion 12-5 of the coil 120 may be 3.1 [mm] to 3.4 [mm]. For example, the length L3 of the fifth portion 12-5 of the coil 120 may be 3.19 [mm].

For example, the length L4 of the seventh portion 12-7 of the coil 120 may be 3.5 [mm] to 4 [mm]. For example, the length L4 of the seventh portion 12-7 of the coil 120 may be 3.6 [mm].

The coil 120 may be symmetrical with respect to a first diagonal line that is a straight line in the first diagonal direction 502 and may be symmetrical with respect to a second diagonal line that is a straight line in the second diagonal direction.

The coil 120 may also be asymmetric with respect to the first centerline 504 and asymmetric with respect to the second centerline 505.

The length in the transverse direction of the first surface of the first magnet 130-1 facing the first portion 12-1 of the coil 120 corresponds to the length of the first portion 12-1 of the coil 120 L1, but it is not limited thereto, and in other embodiments, both may be the same.

The length in the transverse direction of the first surface of the second magnet 130-2 facing the second portion 12-2 of the coil 120 is greater than the length of the second portion 12-2 of the coil 120 But it is not limited thereto, and in other embodiments, both may be the same.

The position sensor 170 at the initial position of the bobbin 110 moves from the first side 141-1 to the second side 141-2 of the housing 140 to the fourth portion 12-4 of the coil 120 ) And the fifth portion 12-5. At least a portion of the position sensor 170 in the direction from the first side 141-1 of the housing 140 to the second side 141-2 of the housing 140 is also in contact with the second magnet 130-1, Lt; / RTI > The spatial interference between the position sensor 170 and the first magnet 130-1 disposed at the first corner portion 142-1 of the housing 140 can be avoided.

One end of the first magnet 130-1 is disposed on the first side 141-1 of the housing 140 and the other end of the first magnet 131-1 is disposed on the third side 141- 3, one end of the second magnet 130-2 is disposed on the second side portion 141-2 of the housing 140, and the other end of the second magnet 130-2 is disposed on the housing 140 The second side 141-1 and the second side 141-4. Each of the first and second magnets 130-1 and 130-2 is extended to the side portions of the adjacent housing 140 so that the first and second portions 12- The area of the first surface of each of the first and second magnets 130-1 and 130-2 opposed to the first and second magnets 130 and 132 can be increased and the electromagnetic force can be improved.

In general, the remaining portion of the side portion of the bobbin except for the groove provided in the bobbin for mounting the AF drive coil requires a minimum thickness for ensuring durability and stable strength. Due to the minimum thickness of the side portion of the bobbin required for disposing the AF driving coil, the lens driving device can be restricted in the size of the opening for mounting the lens, which makes it difficult to implement the AF lens driving device of a large diameter . For example, the large diameter may be a case where the diameter of the opening of the bobbin is 5.8 mm or more.

Also, when both the AF drive magnet and the AF position sensor are disposed on the side of the housing, the lens driving apparatus of a large diameter can not be realized due to the spatial interference between the AF position sensor and the bobbin. Particularly, when the AF position sensor is in the form of a driver IC, since the size of the AF sensor is larger than that of the position sensor realized by the Hall sensor alone, such spatial interference may further restrict the implementation of the large diameter.

The embodiment is characterized in that the AF driving magnets 130-1 and 130-2 are disposed only at two corners of the housing 140 and the position sensor 170 is disposed at the side of the housing 140, ) And the AF position sensor can be reduced.

1, the length K1 from the outer surface of the first side plate of the cover member 300 to the outer side surface of the second side plate is larger than the length K1 of the outer side of the third side plate of the cover member 300 May be longer than the length K2 to the side (K1 > K2).

For example, the first side plate of the cover member 300 may correspond to or be opposed to the first side 141-1 of the housing 140, and the second side plate of the cover member 300 may correspond to the second side 141-1 of the housing 140 And the third side plate of the cover member 300 may correspond to or be opposed to the third side 141-3 of the housing 140 and the cover member 300 may correspond to or face the side 141-2, The fourth side plate of the housing 140 may correspond to or be opposed to the fourth side 141-4 of the housing 140. [

The position sensor 170 is disposed on the first side 141-1 of the housing 140 corresponding to the first side plate of the cover member 300 so that when K1 > K2, It is possible to secure a space to be mounted and to avoid a spatial interference between the position sensor 170 and the bobbin 110 and realize a slim size lens driving apparatus having a large diameter and a thin shape .

Since the two AF drive magnets 130-1 and 130-2 are disposed at the two corners of the housing 130, the embodiment can improve the degree of freedom of arrangement of the position sensor and the like, And the electromagnetic force in the direction of the optical axis generated in the diagonal direction can be improved.

For example, it is possible to improve the electromagnetic force by avoiding the spatial interference with the position sensor 170 and increasing the size of the first and second magnets 130-1 and 130-2.

12 and 14, the length Q2 of one side or the second side 8a of the first magnet 130-1 and the length Q2 of the third side 141-3 of the housing 140 And the ratio (Q2: Q1) to the value (Q1) of 2 minutes and 1 of the length may be 1: 1.2 to 1: 1.6.

For example, the length of one side of the second magnet 130-2 or the length Q2 of the second surface 9a and the length of the fourth side 141-4 of the housing 140 in the transverse direction (Q2: Q1) between the values Q1 and Q2 may be the same as described above.

For example, when Q1 / Q2 exceeds 1.6, the sizes of the magnets 130-1 and 130-2 are too small to secure a desired electromagnetic force, and the driving force for AF driving can not be ensured. When Q1 / Q2 is less than 1.2, the sizes of the magnets 130-1 and 130-2 are excessively increased to cause spatial interference between the magnets 130-1 and 130-2 and the bobbin 110, none.

The value of the length of the other side of the first magnet 130-1 or the length Q4 of the third side 8b and the length of the side of the first side 141-1 of the housing 140 (Q3: Q3) may be 1: 1.3 to 1: 1.5.

For example, the length of the other side of the second magnet 130-2 or the length Q4 of the third surface 9b and the length of the second side 141-2 of the housing 140 in the transverse direction (Q4: Q3) between the values Q3 and Q3 may be the same as those described above.

For example, when Q3 / Q4 exceeds 1.5, the sizes of the magnets 130-1 and 130-2 are too small to secure a desired electromagnetic force, and a driving force for AF driving can not be ensured. When Q3 / Q4 is less than 1.3, the sizes of the magnets 130-1 and 130-2 are excessively increased, and the spatial interference between the magnets 130-1 and 130-2 and the bobbin 110 occurs, It can not be implemented.

On the other hand, the lens driving apparatus according to the above-described embodiments can be used in various fields, for example, a camera module or an optical apparatus.

For example, the lens driving apparatus 100 according to the embodiment may form an image of an object in a space using reflection, refraction, absorption, interference, or diffraction, which is a characteristic of light, It may be included in an optic instrument for the purpose of recording and reproduction of an image by a lens or for optical measurement, image propagation, transmission, and the like. For example, the optical device according to the embodiment may include a smart phone and a portable terminal equipped with a camera.

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

16, the camera module 200 includes a lens or lens barrel 400, a lens driving device 100, an adhesive member 612, a filter 610, a first holder 600, a second holder 800 An image sensor 810, a motion sensor 820, a controller 830, and a connector 840.

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

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

The adhesive member 612 can couple or attach the base 210 of the lens driving apparatus 100 to the first holder 600. [ The adhesive member 612 may serve to prevent foreign substances from flowing into the lens driving apparatus 100 in addition to the above-described adhesive role.

For example, the adhesive member 612 may be an epoxy, a thermosetting adhesive, an ultraviolet ray-curable adhesive, or the like.

The filter 610 may block the light of a specific frequency band in the light passing through the lens barrel 400 from being incident on 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.

An opening may be formed in a portion of the first holder 600 on which the filter 610 is mounted so that light passing through the filter 610 can be incident on the image sensor 810.

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

The second holder 800 may be provided with various circuits, elements, and a controller for converting an image formed on the image sensor 810 into an electrical signal and transmitting the electrical signal to an external device.

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

The image sensor 810 receives the image included in the light incident through the lens driving apparatus 100 and converts the received image into an electrical signal.

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

The motion sensor 820 is mounted on the second holder 800 and may be electrically connected to the controller 830 through a circuit pattern provided on the second holder 800. [

The motion sensor 820 outputs rotational angular velocity information based on the motion of the camera module 200. The motion sensor 820 may be implemented as a two-axis or three-axis gyro sensor, or an angular velocity sensor.

The control unit 830 is mounted on the second holder 800. And the second holder 800 may be electrically connected to the lens driving apparatus 100. [ For example, the second holder 800 may be electrically connected to the circuit board 190 of the lens driving apparatus 100.

For example, a driving signal may be provided to the position sensor 170 via the second holder 800, and an output signal of the position sensor 170 may be transmitted to the second holder 800. For example, the output signal of the position sensor 170 may be received by the control unit 830.

The connector 840 is electrically connected to the second holder 800 and may include a port for electrically connecting to the external device.

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

17 and 18, the portable terminal 200A includes a body 850, a wireless communication unit 710, an A / V input unit 720, a sensing unit 740, an input / 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. 17 is of a bar shape, but is not limited thereto. The body 850 may be a slide type, a folder type, a swing type , A swirl type, and the like.

The body 850 may include a case (casing, housing, cover, etc.) which forms an appearance. For example, the body 850 can be divided into a front case 851 and a rear case 852. Various electronic components of the terminal may be installed in the 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 in which the terminal 200A is located. For example, the wireless communication unit 710 may include a broadcast receiving module 711, a mobile communication module 712, a wireless Internet module 713, a short distance 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 a camera module 200 according to the embodiment shown in FIG.

The sensing unit 740 senses the current state of the terminal 200A such as the open / close state of the terminal 200A, the position of the terminal 200A, the presence of the user, the orientation of the terminal 200A, And generate a sensing signal for controlling the operation of the terminal 200A. 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 the power supply of the power supply unit 790, whether the interface unit 770 is connected to an external device, and the like.

The input / output unit 750 is for generating an input or an output related to a visual, auditory or tactile sense. The input / output unit 750 can generate input data for controlling the operation of the terminal 200A and 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 may be a liquid crystal display, a thin film transistor-liquid crystal display, an organic light-emitting diode, a flexible display, And a display (3D display).

The audio output module 752 outputs audio data received from the wireless communication unit 710 in a call signal reception mode, a call mode, a recording mode, a voice recognition mode, or a broadcast reception mode, 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 electrical input signal.

The memory unit 760 may store programs for processing and controlling the control unit 780 and may store input / output data (e.g., telephone directory, message, audio, still image, You can save it temporarily. For example, the memory unit 760 may store an image, e.g., a photograph or a moving image, photographed by the camera 721. [

The interface unit 770 serves as a path for connection to an external device connected to the terminal 200A. The interface unit 770 receives data from an external device or supplies power to each component in the terminal 200A or allows data in the terminal 200A to be transmitted to an external device. For example, the interface unit 770 may include a wired / wireless headset port, an external charger port, a wired / wireless data port, a memory card port, a port for connecting a device equipped with the identification module, Output port, a video input / output (I / O) port, and an earphone port.

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

The control unit 780 may include a multimedia module 781 for multimedia playback. The multimedia module 781 may be implemented in the control unit 180 or may be implemented separately from the control unit 780.

The control unit 780 can perform a pattern recognition process for recognizing handwriting input or drawing input performed on the touch screen as characters and images, respectively.

The power supply unit 790 can supply external power or internal power under the control of the controller 780 and supply power required for operation of each component.

The features, structures, effects and the like described in the embodiments are included in at least one embodiment of the present invention and are not necessarily limited to one embodiment. Further, the features, structures, effects, and the like illustrated in the embodiments can be combined and modified by other persons having ordinary skill in the art to which the embodiments belong. Therefore, it should be understood that the present invention is not limited to these combinations and modifications.

Claims (10)

A housing including a first corner and a second corner adjacent to the first corner;
A bobbin disposed within the housing;
A coil disposed in the bobbin;
A first magnet disposed at the first corner of the housing;
A second magnet disposed at a third corner of the housing facing the first corner of the housing;
A position sensor disposed in the housing; And
And a sensing magnet corresponding to the position sensor and disposed on the bobbin,
The first area of the first portion of the coil disposed on one side of the bobbin corresponding to the first corner of the housing is smaller than the first area of the coil disposed on the other side of the bobbin corresponding to the second corner of the housing, Is larger than the second area of the second portion of the lens. The method according to claim 1,
Wherein the second area is smaller than a third area of the third portion of the coil connecting the first portion of the coil and the second portion of the coil. The method according to claim 1,
Wherein the ratio of the second area to the first area is 1: 2 to 1: 4. The method according to claim 1,
The third corner facing the first corner in a first diagonal direction,
The housing includes a fourth corner facing the second corner in a second diagonal direction, a first side disposed between the first corner and the fourth corner, a first side disposed between the second corner and the third corner, Further comprising a second side, a third side disposed between the first corner and the second corner, and a fourth side disposed between the third corner and the fourth corner,
The first diagonal direction is a direction passing through the center of the housing and toward the third corner portion from the first corner, the second diagonal direction passing through the center of the housing, and the direction from the second corner toward the fourth corner ego,
And the magnets are not disposed at the second corner and the fourth corner of the housing. The method according to claim 1,
The third corner facing the first corner in a first diagonal direction,
The housing includes a fourth corner facing the second corner in a second diagonal direction, a first side disposed between the first corner and the fourth corner, a first side disposed between the second corner and the third corner, Further comprising a second side, a third side disposed between the first corner and the second corner, and a fourth side disposed between the third corner and the fourth corner,
The first diagonal direction is a direction passing through the center of the housing and toward the third corner portion from the first corner, the second diagonal direction passing through the center of the housing, and the direction from the second corner toward the fourth corner ego,
Wherein the side surface of the bobbin is symmetrical with respect to a first diagonal line that is a straight line in the first diagonal direction and is symmetrical with respect to a second diagonal line that is a straight line in the second diagonal direction. 6. The method of claim 5,
The side of the bobbin is asymmetric with respect to the first center line, asymmetrical with respect to the second center line,
The first centerline is a straight line passing through the center of the housing and directed from the first side of the housing toward the second side of the housing,
And the second center line passes through the center of the housing and is a straight line in a direction from the third side of the housing toward the fourth side of the housing. 5. The method of claim 4,
A circuit board disposed on the first side of the housing and electrically connected to the position sensor; And
And a balancing magnet disposed on the bobbin. 8. The method of claim 7,
A base disposed below the bobbin; And
Further comprising a first spring and a second spring disposed between the bobbin and the base and spaced from each other,
Wherein the first spring includes a first bonding portion to which one end of the coil is connected and a second bonding portion that is electrically connected to the circuit board,
Wherein the second spring includes a third bonding portion to which the other end of the coil is connected and a fourth bonding portion that is electrically connected to the circuit board. 5. The method of claim 4,
Wherein one end of the first magnet is disposed on the first side of the housing and the other end of the first magnet is disposed on the third side of the housing,
One end of the second magnet is disposed on the second side of the housing, one end of the second magnet is disposed on the fourth side of the housing,
Wherein at least a portion of the position sensor in the direction from the first side of the housing to the second side of the housing overlaps with the second magnet. 10. The method according to any one of claims 1 to 9,
Wherein the position sensor comprises:
A Hall sensor for generating an output according to a result of sensing the intensity of the magnetic force of the sensing magnet; And
And a driver for outputting a first drive signal for driving the Hall sensor and a second drive signal for driving the coil.

Images