KR102412608B1 - A lens moving unit, and camera module and optical instrument including the same - Google Patents

Abstract

Embodiments include a first side, a second side, a third side disposed opposite the first side, a fourth side disposed opposite the second side, a first corner portion positioned between the first side and the second side , a second corner portion positioned between the second side and the third side, a third corner portion positioned between the third side and the fourth side, and a fourth corner portion positioned between the fourth side and the first side. a bobbin disposed within the housing and comprising a first side corresponding to the first side, a second side corresponding to the second side, a third side corresponding to the third side, and a fourth side corresponding to the fourth side; , a first driving magnet disposed on a first side of the bobbin, a second driving magnet disposed on a third side of the bobbin, a coil disposed in a housing and wrapped around the bobbin and disposed within the housing, and the bobbin coupled with and connected to the coil a first spring and a second spring, wherein the housing includes a support for supporting the coil, a first opening exposing a portion of the coil is provided on a first side of the housing, and a third side of the housing includes another portion of the coil A second opening exposing a portion is provided.

Description

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

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

Since it is difficult to apply the technology of a voice coil motor (VCM) used in an existing general camera module to a camera module for ultra-small size and low power consumption, research related thereto 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 frequently be impacted during use, and the camera module may be slightly shaken according to a user's hand shake while shooting. In consideration of this point, a technology for additionally installing an anti-shake means to a camera module has been recently developed. For details on the camera module, see Korean Patent Application Laid-Open No. 10-2015-0008662 (published on January 23, 2015). 1) and US Patent Publication No. US 2011/0141564 (published on June 16, 2011).

Embodiments provide a lens driving device capable of simplifying a structure, reducing a size, and improving electromagnetic force, and a camera module and an optical device including the same.

A lens driving device according to an embodiment includes a first side, a second side, a third side disposed opposite to the first side, a fourth side disposed opposite to the second side, the first side and the second side a first corner portion positioned between the side portions, a second corner portion positioned between the second side portion and the third side portion, a third corner portion positioned between the third side portion and the fourth side portion, and the fourth a housing including a side portion and a fourth corner portion positioned between the first side portion; a first side corresponding to the first side, a second side corresponding to the second side, a third side corresponding to the third side, and a fourth side corresponding to the fourth side; bobbins comprising; a first driving magnet disposed on the first side surface of the bobbin; a second driving magnet disposed on the third side surface of the bobbin; a coil disposed in the housing, surrounding the bobbin, and disposed in the housing; and a first spring and a second spring coupled to the bobbin and connected to the coil, wherein the housing includes a support for supporting the coil, and a portion of the coil is exposed on the first side of the housing. A first opening may be provided, and a second opening exposing another portion of the coil may be provided at the third side of the housing.

The support part is disposed between the first corner part and the fourth corner part, the first support part supports a lower surface of the coil; and a second support part disposed between the second corner part and the third corner part and supporting a lower surface of the coil.

The support portion may include a third support portion protruding from an inner surface of the second side portion; and a fourth support part protruding from an inner surface of the fourth side part.

The third support part may include a groove, and a first end and a second end of the coil may be disposed in the groove to be connected to the first and second springs.

A first end of the coil may be electrically connected to the first spring, and a second end of the coil may be electrically connected to the second spring.

One end of the third support part is connected to the inner surface of the second corner part, the other end of the third support part is connected to the inner surface of the first corner part, and one end of the fourth support part is connected to the inner surface of the third corner part. and the other end of the fourth support part may be connected to an inner surface of the fourth corner part.

The lens driving device may include a sensing magnet disposed on the fourth side surface of the bobbin; a circuit board disposed on the fourth side of the housing; a position sensor disposed on the circuit board; and a base disposed under the bobbin, wherein the first and second springs may be disposed between the bobbin and the base.

the second and fourth sides of the housing in a direction from the second side to the fourth side of the housing do not overlap the first and second drive magnets, and at the first side of the housing The first and second driving magnets may overlap the coil in a third lateral direction.

In a direction from the second side to the fourth side of the housing, the coil may overlap the sensing magnet and the position sensor.

Each of the first and second springs includes an outer frame coupled to the housing, the outer frame of the first spring electrically connects one end of the coil and the circuit board, and the outer frame of the second spring may electrically connect the other end of the coil and the circuit board.

The embodiment may simplify the structure, reduce the size, and improve the electromagnetic force.

1 is an exploded view of a lens driving device according to an embodiment.
2 is a view showing the coupling of the lens driving device excluding the cover member.
3 is a perspective view of the bobbin shown in FIG. 1 ;
FIG. 4 shows the bobbin shown in FIG. 1 , first and second magnets, a third magnet, and a fourth magnet.
5A is a perspective view of the housing shown in FIG. 1 ;
FIG. 5B is a plan view of the housing shown in FIG. 1 ;
6 is a perspective view of a housing to which a coil is coupled.
7 is a perspective view of a coil, a position sensor, and a circuit board disposed in a housing;
8 shows a bottom view of the lower elastic member and the circuit board coupled to the housing.
9 shows the lower elastic member, the base, and the circuit board.
FIG. 10 is a cross-sectional view taken in the AB direction of the lens driving device shown in FIG. 2 .
11 shows an embodiment of the position sensor shown in FIG. 1 .
12 is an exploded perspective view of a camera module according to an embodiment.
13 is a perspective view of a portable terminal according to an embodiment.
14 is a block diagram of the portable terminal shown in FIG. 13 .

Hereinafter, embodiments of the present invention that can specifically realize the above object will be described with reference to the accompanying drawings.

In the description of the embodiment, in the case where it is described as being formed on "on or under" of each element, the upper (upper) or lower (lower) (on or under) is The two elements are in direct contact with each other or one or more other elements are disposed between the two elements indirectly. In addition, when expressed as "up (up) or down (on or under)", it may include the meaning of not only an upward direction but also a downward direction based on one element.

In addition, as used hereinafter, relational terms such as “first” and “second”, “upper/upper/above” and “lower/lower/below” refer to any physical or logical relationship or order between such entities or elements. may be used only to distinguish one entity or element from another, without necessarily requiring or implying that Also, like reference numerals refer to like elements throughout the description of the drawings.

In addition, terms such as "include", "compose", or "have" described above mean that the corresponding component may be embedded unless otherwise stated, so other components are excluded. Rather, it should be construed as being able to include other components further. Also, terms such as “corresponding” described above may include at least one of “opposite” and “overlapping” meanings.

For convenience of description, the lens driving apparatus according to the embodiment is described using a Cartesian coordinate system (x, y, z), but may be described using other coordinate systems, and the embodiment is not limited thereto. In each figure, the x-axis and y-axis mean a direction perpendicular to the z-axis, which is the optical axis (OA) direction, the optical axis or the z-axis direction parallel to the optical axis is called the 'first direction', and the x-axis direction is ' The second direction may be referred to as a 'second direction', and the y-axis direction may be referred to as a 'third direction'.

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

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

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

Also, the lens driving apparatus 100 may further include a position sensor 170 , a circuit board 190 , and a third magnet 180 for AF feedback driving. In addition, the lens driving device 100 may further include and a fourth magnet 185 . Also, the lens driving device 100 may further include a cover member 300 and a base 210 .

First, the cover member 300 will be described.

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

The cover member 300 has an open lower portion and may be in the form of a box including an upper plate and side plates, and lower ends of the side plates of the cover member 300 may be coupled to the upper part of the base 210 . The shape of the upper plate of the cover member 300 may be a polygon, for example, a quadrangle or an octagon, and an opening for exposing a lens (not shown) to external light may be provided in the upper plate.

The material of the cover member 300 may be a non-magnetic material such as SUS or plastic to prevent sticking to the magnet 130, but may be formed of a magnetic material to function as a yoke.

Next, the bobbin 110 will be described.

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

3 is a perspective view of the bobbin 110 shown in FIG. 1, and FIG. 4 is the bobbin 110, the first and second magnets 130-1 and 130-2, and the third magnet shown in FIG. 180), and the fourth magnet 185 is shown.

3 and 4 , a lens or a lens barrel may be mounted on the bobbin 110 and disposed in the housing 140 . The bobbin 110 may have an opening for mounting a lens or a lens barrel, and the shape of the opening may be a circle, an ellipse, or a polygon, but is not limited thereto.

The bobbin 110 is disposed on the upper surface and is disposed on a first coupling part (not shown) that is coupled and fixed to the first inner frame 151 of the upper elastic member 150, and is disposed on the lower surface of the lower elastic member 160. 2 It may include a second coupling part (not shown) coupled to and fixed to the inner frame 161 .

For example, the first and second coupling portions of the bobbin 110 may have a protrusion, a groove, or a planar shape, but is not limited thereto.

The bobbin 110 may include a first escape groove 112a provided in an area of an upper surface corresponding to or aligned with the first frame connection part 153 of the upper elastic member 150 .

In addition, the bobbin 110 may include a second escape groove 112b in an area of a lower surface corresponding to or aligned with the second frame connection part 163 of the lower elastic member 160 .

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 part 153 and the second frame connection part 163 and Spatial interference between the bobbins 110 may be eliminated, and thus the first frame connection part 153 and the second frame connection part 163 may be easily elastically deformed.

The bobbin 110 may include first to fourth side surfaces 110b-1 to 110b-4 and fifth to eighth side surfaces 110c-1 to 110c-4. The first to eighth side surfaces 110b - 1 to 110b - 4 of the bobbin 110 may form an outer surface of the bobbin 110 .

Each of the fifth to eighth side surfaces 110c-1 to 110c-4 may connect two adjacent ones of the first to fourth side surfaces 110b-1 to 110b-4 to each other.

For example, the area of each of the fifth to eighth side surfaces 110c-1 to 110c-4 may be smaller than the area of each of the first to fourth side surfaces 110b-1 to 110b-4.

For example, the length in the horizontal direction of each of the fifth to eighth side surfaces 110c-1 to 110c-4 may be smaller than the length in the horizontal direction of each of the first to fourth side surfaces 110b-1 to 110b-4. have.

For seating of the first and second magnets 130-1 and 130-2, the bobbin 110 is provided on any one of two sides (eg, 110b-1, 110b-3) facing each other. A second groove 106 provided in the other one of the first groove 105 and the two sides (eg, 110b-1 and 110b-3) facing each other may be provided.

The first and second grooves 105 and 106 may overlap in the direction from the first side surface 110b-1 to the third side surface 110b-3 of the bobbin 110, and the first and second grooves 105, The shape of the 106 may coincide with the shape of the first and second magnets 130 - 1 and 130 - 2 .

In addition, for seating of the third and fourth magnets 180 and 185 , the bobbin 110 is provided on one of the other two side surfaces (eg, 110b-2 and 110b-4) facing each other. A fourth groove 185a provided in the other of the groove 180a and the other two side surfaces (eg, 110b-2 and 110b-4) facing each other may be provided.

The third and fourth grooves 180a and 185a in the direction from the second side surface 110b - 2 to the fourth side surface 110b - 4 of the bobbin 110 may not overlap each other, but are not limited thereto. In another embodiment, the third and fourth grooves 180a and 185a may overlap each other in the direction from the second side surface 110b - 2 to the fourth side surface 110b - 4 of the bobbin 110 .

A shape of each of the third and fourth grooves 180a and 185a may coincide with a shape of a corresponding one of the third and fourth magnets 180 and 185 .

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

The first and second magnets 130 - 1 and 130 - 2 may generate electromagnetic force by interaction with the coil 120 , and a driving magnet capable of moving the bobbin 110 by this electromagnetic force. can

The first magnet 130 - 1 and the second magnet 130 - 2 may be disposed on two sides (eg, 110b - 1 and 110b - 3 ) facing each other of the bobbin 110 .

For example, the first magnet 130 - 1 may be disposed on the first side surface 110b - 1 of the bobbin 110 , and the second magnet 130 - 2 may be disposed on the third side surface 110b- of the bobbin 110 . 3) can be placed.

For example, each of the first and second magnets 130 - 1 may be disposed in a corresponding one of the first groove 105 and the second groove 106 of the bobbin 110 .

In another embodiment, grooves may not be formed in the first and third side surfaces 110b-1 and 110b-3 of the bobbin 110, and the first and second magnets 130-1 and 130-2 The silver may be disposed on the first and third side surfaces 110b - 1 and 110b - 3 of the bobbin 110 of the bobbin 110 .

Each of the first and second magnets 130-1 and 130-2 has a shape corresponding to the first and third side surfaces 110b-1 and 110b-3 of the bobbin 110, for example, a rectangular parallelepiped shape. may have, but is not limited thereto.

Each of the first and second magnets 130-1 and 130-2 may be a bipolar magnetizing magnet divided into two in a direction perpendicular to the optical axis. In this case, each of the first and second magnets 130 - 1 and 130 - 2 may be implemented with ferrite, alnico, rare earth magnet, or the like.

The first and second magnets having a bipolar magnetization structure may include a first magnet part including an N pole and an S pole, a second magnet part including the S pole and the N pole, and a non-magnetic barrier rib.

The first magnet part and the second magnet part may be spaced apart from each other, and the non-magnetic partition wall may be positioned between the first magnet part and the second magnet part. The non-magnetic barrier rib may include a section having little polarity as a portion having substantially no magnetism, and may be filled with air or made of a non-magnetic material.

In another embodiment, each of the first and second magnets 130 - 1 and 130 - 2 has a first surface facing the coils 120 is an S pole, and a second surface opposite to the first surface is an N It may be a unipolar polarized magnet, but is not limited thereto. In another embodiment, each of the first and second magnets 130-1 and 130-2 may be arranged such that a first surface thereof is an N-pole and a second surface thereof is an S-pole.

Next, the third magnet 180 and the fourth magnet 185 will be described.

The third magnet 180 may be a sensing magnet. The position sensor 180 may detect a change in the strength of the magnetic field of the third magnet 180 according to the movement of the bobbin 110 .

The fourth magnet 185 may be a balancing magnet for balancing the weight with the third magnet 180 . The weight of the AF movable part may be balanced by the fourth magnet 185 , and thus an accurate AF operation may be performed. In another embodiment, the fourth magnet 185 may be omitted.

The third magnet 180 may be disposed on the fourth side surface 110b - 4 of the bobbin 110 .

The fourth magnet 185 may be disposed on the second side surface 110b - 2 of the bobbin 110 .

The third magnet 180 may be disposed in the third groove 180a of the bobbin 110 , and the fourth magnet 185 may be disposed in the fourth groove 185a of the bobbin 110 .

A portion of any one surface of the third magnet 180 mounted on the third groove 180a of the bobbin 110, and/or one side of the fourth magnet 185 mounted on the fourth groove 185b A portion may be exposed from the side of the bobbin 110 , but the present invention is not limited thereto, and in another embodiment, it may not be exposed from the side of the bobbin 110 .

Each of the third magnet 180 and the fourth magnet 185 may be a unipolar magnetizer disposed such that an upper surface is an N pole and a lower surface is an S pole, but is not limited thereto, and the polarity may be reversed.

For example, each of the third magnet 180 and the fourth magnet 185 may be disposed such that the boundary surface of 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 be parallel to the optical axis.

Alternatively, in another embodiment, each of the third magnet 180 and the fourth magnet 185 may be a positively polarized magnet. In this case, the positively polarized magnet includes a first magnet part including an N pole and an S pole, a second magnet part including the S pole and the N pole, and a non-magnetic barrier rib positioned between the first magnet part and the second magnet part. can do.

The third magnet 180 is moved together with the bobbin 110 in the optical axis OA direction by electromagnetic force due to the interaction between the coil 120 and the first and second magnets 130-1 and 130-2. In addition, the position sensor 170 may sense the strength of the magnetic field of the third magnet 180 moving in the optical axis direction, and may output an output signal according to the sensed result.

For example, the controller 830 of the camera module 200 or the controller 780 of the terminal 200A detects the displacement of the bobbin 110 in the optical axis direction based on the output signal output by the position sensor 170 . can

Next, the housing 140 will be described.

The housing 140 accommodates the bobbin 110 on which the first and second magnets 130-1 and 130-2, and the third and fourth magnets 180 and 185 are disposed therein.

Figure 5a is a perspective view of the housing 140 shown in Figure 1, Figure 5b is a plan view of the housing 140 shown in Figure 1, Figure 6 is a perspective view of the housing 140 to which the coil 120 is coupled, 7 is a perspective view of the coil 120 , the position sensor 170 , and the circuit board 190 disposed in the housing 140 , and FIG. 10 is a cross-sectional view taken along the AB direction of the lens driving device 100 shown in FIG. 2 . to be.

5A to 7 and 10 , the housing 140 supports the coil 120, and the AF movable part, for example, the bobbin 110, is moved inside the bobbin 110 in the first direction. Accept.

The AF movable part may include a bobbin 110 elastically supported by the upper elastic member 150 and the lower elastic member 160 , and components mounted on the bobbin 110 to move together with the bobbin 110 . For example, the AF movable unit may include a bobbin 110 and first to fourth magnets 130 - 1 , 130 - 2 , 180 and 185 . Also, for example, the AF movable unit may further include a lens (not shown) mounted on the bobbin 110 .

The housing 140 may have a columnar shape having an opening (eg, hollow), and a plurality of side portions (eg, 141-1 to 141-4) and a plurality of corner portions (eg, 142-1 to 142-1) forming an opening. 142-4) may be included.

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

For example, the housing 140 may include first to fourth side portions 141-1 to 141-4 that are spaced apart from each other, and a first positioned between the first side portion 141-1 and the second side portion 141-2. The corner portion 142-1, the second corner portion 142-2, the third side portion 141-3 and the fourth positioned between the second side portion 141-2 and the third side portion 141-3 A third corner portion 142-3 located between the side portions 141-4, and a fourth corner portion 142-4 located between the fourth side portion 141-4 and the first side portion 141-1 ) may be included.

For example, outer surfaces of the first to fourth side portions 141-1 to 141-4 of the housing 140 may be expressed as first to fourth outer surfaces of the housing 140 .

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

Each of the first to fourth side surfaces 141-1 to 141-4 of the housing 140 may correspond to any one of the first to fourth side surfaces 110b-1 to 110b-4 of the bobbin 110 . Each of the first to fourth corner portions 142-1 to 142-4 of the housing 140 is any one of the fifth to eighth side surfaces 110c-1 to 110c-4 of the bobbin 110 can correspond to

Referring to FIG. 5B , the housing 140 includes first to fourth side parts 141-1 to 141-4 and first to fourth corner parts 142-1 to 142-1 to for mounting or support of the coil 120 . 142-4) may include a support portion 146 disposed on at least one.

A first opening 17a exposing a portion of the coil 120 may be provided in the first side portion 141-1 of the housing 140 , and the coil 120 may be provided at the third side portion 141-3 of the housing 140 . A second opening 17b exposing another portion of 120 may be provided.

For example, the first opening 17a of the housing 140 may be opened to the upper surface of the first side portion 141-1, and the second opening 17b of the housing 140 may be opened to the third side portion 141-3. can be opened to the upper surface of

In another embodiment, the first opening of the housing 140 may be a hole passing through the first side portion 141-1 or the outer and inner surfaces of the first side portion 141-1, and the first opening of the housing 140 The second opening may be a hole passing through the third side portion 141-1 or the inner and outer surfaces of the third side portion 141-1.

The support portion 146 is disposed between the first corner portion 142-1 and the fourth corner portion 142-4 of the housing 140 and includes a first support portion 146a positioned below the first opening 17a; and a second support portion 146b disposed between the second corner portion 142-2 and the third corner portion 142-3 of the housing 140 and positioned below the second opening 17b. .

In addition, the support portion 146 is formed from the third support portion 146c protruding from the inner surface of the second side portion 141-2 of the housing 140 and the inner surface of the fourth side portion 141-4 of the housing 140 . A fourth support portion 146d that protrudes may be further included.

For example, the first to fourth support parts 146a , 146b , 146c , and 146d may contact the lower end or lower surface of the coil 120 , and may support the lower end or lower surface of the coil 120 .

The length of each of the third and fourth support parts 146c and 146d protruding from the inner surface of each of the second and fourth side parts 141-2 and 142-4 is the thickness T of the coil 120 (T, FIG. 6 ). reference), or may be greater than or equal to the length of the coil 120 in a direction perpendicular to the optical axis OA, but is not limited thereto. In another embodiment, the protruding length of each of the third and fourth support parts 146c and 146d may be smaller than the thickness T of the coil 120 .

The third support part 146c may include a groove 41, and a portion of the coil 120 is disposed in the groove 41 to connect with the first and second lower springs 160-1 and 160-2. can be

One end and the other end of the coil 120 by the groove 41 may be guided to the first and second bonding portions 71a and 71b of the first and second lower springs 160-1 and 160-2, and , may be easily coupled to the first and second bonding portions 71a and 71b by soldering or the like.

For example, the support 146c may include a first portion 14a and a second portion 14b that are spaced apart from each other, and a space, such as a groove ( 41) can be provided.

One end of the third support part 146c may extend to the second corner part 142-2 and be connected to the second corner part 142-2, and the other end of the third support part 146c may have a first corner part 142. -1) and may be connected to the first corner portion 142-1. For example, the first portion 14a may be connected to the second corner portion 142 - 2 , and the second portion 14b may be connected to the first corner portion 142-1 .

For example, one end of the third support portion 146c may be connected to the inner surface of the second corner portion 142-2, and the other end of the third support portion 146c may be connected to the inner surface of the first corner portion 142-1. can be connected

One end of the fourth support part 146d may extend to the third corner part 142-3 to be connected to the third corner part 142-3, and the other end of the fourth support part 146d may have a fourth corner part 142. -4) and may be connected to the fourth corner portion 142-4.

For example, one end of the fourth support portion 146d may be connected to the inner surface of the third corner portion 142-3, and the other end of the fourth support portion 146d may be connected to the inner surface of the fourth corner portion 142-4. can be connected

A top surface of each of the first and second support parts 146a and 146b may be located below the top surfaces of the first corner part 142-1 and the fourth corner part 142-4.

The third support part 146c may be located at or below the inner surface of the second side part 141 - 2 of the housing 140 , and the fourth support part 146d , the fourth side part 141 of the housing 140 . -4) may be located at the lower or lower end of the inner surface.

The first surface of a portion of the coil 120 mounted on the housing 140 may be exposed through the first opening 17a of the housing 140 , and the housing may be exposed through the second opening 17b of the housing 140 . The first surface of another portion of the coil 120 mounted on the 140 may be exposed.

In this case, the first surface of the coil 120 has a first magnet 130-1 or a second magnet 130-2 mounted on the first and third side surfaces 110b-1 and 110b-3 of the bobbin 110. ) may be the opposite side of the facing side.

For example, the first portion of the coil 120 corresponding to or located on the first opening 17a is formed at the first corner portion 142-1 and the second corner portion (142-1) of the housing 140 . 142 - 4 , the second portion of the coil 120 corresponding to or located on the second opening 17b is the second corner portion 142 of the housing 140 . -2) and the third corner part 142-3.

For example, the second and fourth side parts 141-1 and 141-4 and the first to fourth corner parts 142 of the housing 140 other than the first part and the second part of the coil 120 . -1 to 142-4) may be located inside the inner surface.

By the adhesive member, the first surface of the coil 120 is formed of the inner surface of the first to fourth side portions 141-1 to 141-4 and the first to fourth corner portions 142-1 to 142-4. It may be coupled, attached, or fixed to the inner surface.

A part of the coil 120 may be positioned between the first opening 17a and the first magnet 130-1, and another part of the coil 120 may be positioned between the second opening 17b and the second magnet 130- 2) can be located in between. Here, a part of the coil 120 may correspond to or face the first magnet 130-1, and the other part of the coil 120 may correspond to or face the second magnet 130-2. have.

Since the coil 120 is disposed inside the first to fourth side portions 141-1 to 141-4 and the first to fourth corner portions 142-1 to 142-4 of the housing 140, The shortest separation distance between the first and second magnets 130 - 1 and 130 - 2 and the coil 120 may be reduced, thereby improving the electromagnetic force due to the interaction.

In another embodiment, the housing 140 may not include the first opening 17a and the second opening 17b, and each of the first side and the third side of the housing 140 has the third support part or the third support part of FIG. 5B , respectively. A support part having the same shape as the fourth support part may be provided.

For example, in another embodiment, the housing 140 may include a third support part protruding from the inner surface of the first side part, and a fourth support part protruding from the inner surface of the fourth side part.

In order to prevent a direct collision with the inner surface of the upper plate of the cover member 300 , a stopper 143 provided on the upper portion, upper surface, or upper portion of the housing 140 may be included.

For example, the stopper 143 may be disposed on the upper surface of at least one of the first to fourth side portions 141-1 to 141-4 of the housing 140, but is not limited thereto. In another embodiment, the stopper may be disposed on the corner portions 142-1 to 142-4 of the housing 140 .

The housing 140 may include at least one protrusion 144 provided on the upper portion, the upper surface, or the upper end of the housing 140 for coupling with the hole of the first outer frame 152 of the upper elastic member 150 . . For example, the at least one protrusion 144 may be disposed on an upper surface of at least one of the first to fourth corner portions 142-1 to 142-4, but is not limited thereto. It may be disposed on the upper surface of at least one of (141-1 to 141-4).

In addition, the housing 140 includes at least one protrusion 147 provided on the lower part, the lower surface, or the lower end of the housing 140 for coupling and fixing with the hole of the second outer frame 162 of the lower elastic member 160 . may include

In order to prevent the lower surface or the 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 lower part, the lower surface, or the lower part.

In order to seat the circuit board 190 , the housing 140 may include at least one seating groove 13a and 13b provided on the outer surface of the fourth side portion 141-4. The seating grooves 13a and 13b may have a two-step step structure including two grooves, but are not limited thereto, and may be formed of one groove in another embodiment.

For example, the seating grooves 13a and 13b are formed on the outer surface of the fourth side portion 141-4 of the housing 140, one end of the fourth side portion 141-4 and the third corner portion 142-3 adjacent to each other. It may be provided on the outer surface and the outer surface of the fourth corner portion 142-3 adjacent to the other end of the fourth side portion 141-4.

In addition, in order to seat the position sensor 170 , the housing 140 may include a seating portion 26 provided on the fourth side portion 141-4.

For example, the seating part 26 may be disposed in the seating groove 13b of the housing 140 , and in FIG. 5 , the seating part 26 is a hole passing through the first side part 141-1 of the housing 140 . However, the shape is not limited thereto, and in another embodiment, the seating part for seating the position sensor 170 may have a groove shape.

The seating portion 26 may have a shape corresponding to or coincident with the position sensor 190 , but is not limited thereto.

Next, the coil 120 will be described.

The coil 120 may be disposed between the inner surface of the housing 140 and the outer surface of the bobbin 110 . The coil 120 may surround the bobbin 110 and may be disposed in the housing 140 .

The coil 120 wraps around the outer surface of the bobbin 110 , and the first to fourth side parts 141-1 to 141-4 and the first to fourth corner parts 142-1 to 142-1 to the housing 140 . 142-4) can be placed inside.

For example, the coil 140 may be disposed on the support 146 of the housing 140 .

The lower, lower, or lower surface of the coil 140 may contact the upper surface of the support part 146 .

The first portion of the coil 120 corresponding to the first side portion 141-1 of the housing 140 may correspond to the first magnet 130-1, and the third portion at the first side portion 141-1 The first portion of the coil 120 in the direction of the side portion 141-3 may overlap the first magnet. For example, the first portion of the coil 120 may be a portion exposed by the first opening 17a.

The second portion of the coil 120 corresponding to the third side portion 141-3 of the housing 140 may correspond to the second magnet 130-2, and the first portion at the third side portion 141-3 The second portion of the coil 120 in the direction of the side portion 141-1 may overlap the second magnet 130-2. For example, the second portion of the coil 120 may be a portion exposed by the second opening 17b.

The second and fourth side portions 142-2 and 142-4 of the housing 140 in the direction from the second side portion 142-2 to the fourth side portion 142-4 of the housing 140 are first and second The two magnets 130 - 1 and 130 - 4 may not overlap each other.

In the direction from the first side 141-1 to the third side 141-3 of the housing 140, the coil 120 has the first and second magnets 130-1 and 130-2 overlapping the lens. drive.

In the direction from the second side 141-2 to the fourth side 141-4 of the housing 140, the coil 120 includes a third magnet 180, a fourth magnet 185, and a position sensor 170 and may overlap.

The second and fourth outer surfaces of the housing 140 in the direction from the second outer surface of the housing 140 to the fourth outer surface of the housing 140 are first and second magnets 130 - 1 and 130 - 2 . may not overlap.

The coil 120 may be a driving coil that moves the bobbin 110 through electromagnetic interaction with the first and second magnets 130 - 1 and 130 - 2 .

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

For example, the driving signal applied to the coil 120 may be a DC signal.

Alternatively, for example, in another embodiment, the driving signal applied to the coil 120 may include an AC signal and a DC signal.

The AF movable unit may be driven unidirectionally or bidirectionally by electromagnetic force due to the interaction between the coil 120 and the first and second magnets 130-1 and 130-2. Here, the unidirectional driving refers to movement of the AF moving unit in one direction, for example, in an upward direction (eg, upward direction (+Z axis direction)) based on the initial position of the AF moving unit, and bidirectional driving refers to moving the AF based on the initial position of the AF moving unit. Refers to moving in both directions (eg, upward or downward).

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

In addition, the initial position of the bobbin 110 is a position where the AF movable part is placed when gravity acts in the direction from the bobbin 110 to the base 210 , or conversely, when gravity acts in the direction from the base 210 to the bobbin 110 . can be

Interaction between the coil 120 and the first and second magnets 130 - 1 and 130 - 2 by controlling the strength and/or polarity (eg, a current flowing direction) of the driving signal applied to the coil 120 . By adjusting the intensity and/or direction of the electromagnetic force by , the movement of the AF movable unit may be controlled, thereby performing an auto-focusing function.

The coil 120 may be spaced apart from the outer surface of the bobbin 110 and disposed inside the housing 140 to have a closed loop shape surrounding the outer surface of the bobbin 110 , for example, a ring shape.

The coil 120 may be in the form of a coil ring or a coil block, and the coil 120 of the coil ring is formed on inner surfaces and corners ( 141-1 to 141-4) of the housing 140 by an adhesive member. 142-1 to 142-4) may be fixed to the inner surface.

One end of the coil 120 may be electrically connected to the circuit board 190 through the first lower spring 160-1, and one end of the coil 120 may be connected to the circuit board through the second lower spring 160-2. may be electrically connected to 190 .

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

The circuit board 190 and the position sensor 170 are disposed on the fourth side 141-4 of the housing 140 .

The circuit board 190 may be disposed on an outer surface of the fourth side portion 141-1 of the housing 140 (or an outer surface of the second side portion 141-2) of the housing 140 . For example, the circuit board 190 may be disposed on the fourth outer surface (or the second outer surface) of the housing 140 .

For example, the circuit board 190 may be disposed in at least one seating groove 13a and 13b provided in the fourth side portion 141-1 of the housing 140 . The first surface of the circuit board 190 may be in contact with at least one seating groove 13a and 13b of the housing 140 .

The circuit board 190 may include a plurality of terminals 19a to 19d to be electrically connected to the outside.

For example, the plurality of terminals 19a to 19d may be arranged in a line at the lower end of the second surface of the lower end S2 of the circuit board 190 , but is not limited thereto. In this case, the second surface of the circuit board 190 may be opposite to the first surface of the circuit board 190 .

In the embodiment shown in FIG. 2 , the circuit board 190 includes four terminals, but is not limited thereto, and in another embodiment, there may be five or more.

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

The position sensor 170 may be mounted or disposed on the first surface of the circuit board 190 , for example, on the first surface of the upper end S1 (refer to FIG. 7 ).

The position sensor 170 may be disposed on the seating portion 26 provided on the fourth side portion 141-4 of the housing 140 .

In the initial position of the bobbin 110, the position sensor 170 disposed on the housing 140 is a third magnet ( 180) may overlap, but is not limited thereto.

In another embodiment, in the initial position of the bobbin 110, the position sensor 170 and the third magnet 180 in the direction from the fourth side portion 141-4 to the second side portion 141-2 of the housing 140 They may not overlap each other.

In the initial position of the bobbin 110 , the position sensor 170 disposed on the housing 140 moves the coil 120 in the direction from the fourth side 141-4 to the second side 141-2 of the housing 140 . may overlap.

In addition, in the initial position of the bobbin 110 , the position sensor 170 disposed on the housing 140 is a first magnet in the direction from the fourth side portion 141-4 to the second side portion 141-2 of the housing 140 . (130-1) and the second magnet 130-2 may not overlap.

The position sensor 170 may detect the strength of the magnetic field of the third magnet 180 mounted on the bobbin 110 according to the movement of the bobbin 110 , and an output signal (eg, output voltage) according to the sensed result can be printed out.

The position sensor 170 may be implemented in the form of a driver including a Hall sensor.

FIG. 11 shows an embodiment of the position sensor 170 shown in FIG. 1 .

Referring to FIG. 11 , 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 silicon, and as the ambient temperature increases, the output VH of the Hall sensor 61 may increase. For example, the ambient temperature may be the temperature of the lens driving device, for example, the temperature of the circuit board 190 , the temperature of the Hall sensor 61 , or the temperature of the driver 62 .

Also, 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 with respect to the ambient temperature.

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

For example, the Hall sensor 61 of the first position sensor 190 may generate an output VH according to a result of sensing the strength of the magnetic force of the third magnet 180 .

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

For example, using data communication using a protocol, for example, I2C communication, the driver 62 receives the clock signal SCL, the data signal SDA, and the power signal VCC and GND from the controllers 830 and 780. can receive

The driver 62 includes a driving signal dV for driving the Hall sensor 61 using the clock signal SCL and the power signals VCC and GND, and a driving signal Id1 for driving the coil 120 . ) can be created.

The first position sensor 170 is configured to provide a driving signal to the first to fourth terminals for transmitting and receiving the clock signal SCL, the data signal SDA, and the power signals VCC and GND and the coil 120 . It may include fifth and sixth terminals.

In addition, the circuit board 190 includes first and second pads 9a and 9b (refer to FIG. 8 ) electrically connected to the fifth and sixth terminals of the first position sensor 170 and the first position sensor 170 . ) may include third to sixth pads (not shown) electrically connected to the first to fourth terminals.

In addition, the driver 62 receives the output (VH) of the Hall sensor 61, using a data communication using a protocol, for example, I2C communication, related to the output (VH) of the Hall sensor 61 The clock signal SCL and the data signal SDA may be transmitted to the controllers 830 and 780 .

In addition, the driver 62 receives the temperature sensing signal Ts measured by the temperature sensing element 63, and controls the temperature sensing signal Ts using data communication using a protocol, for example, I2C communication. It can be transmitted to (830, 780).

The controllers 830 and 780 may perform temperature compensation on the output VH of the Hall sensor 61 based on a change in ambient temperature measured by the temperature sensing element 63 of the first position sensor 170 . .

For example, when the driving signal (dV) or the bias signal of the Hall sensor 61 is 1 [mA], the output (VH) of the Hall sensor 61 of the first position sensor 170 is -20 [mV] ~ It may be +20 [mV].

And in the case of temperature compensation for the output (VH) of the Hall sensor 61 having a negative slope with respect to the ambient temperature change, the output (VH) of the Hall sensor 61 of the first position sensor 170 is 0 [ mV] to +30 [mV].

When the output of the Hall sensor 61 of the first position sensor 170 is displayed in the xy coordinate system, the output range of the Hall sensor 61 of the first position sensor 170 is set in the first quadrant (eg, 0 [mV] ~ +30[mV]) for the following reasons.

Since the output of the Hall sensor 61 in the first quadrant and the output of the Hall sensor 61 in the third quadrant of the xy coordinate system move in opposite directions according to the ambient temperature change, both the first and third quadrants are AF When used as a driving control section, the accuracy and reliability of the Hall sensor may be degraded. Therefore, in order to accurately compensate for changes in ambient temperature, a predetermined range of the first quadrant may be an output range of the Hall sensor 61 of the first position sensor 170 .

The first position sensor 170 is connected to the first to third terminals for the clock signal SCL and the two power signals VCC and GND, the fourth terminal for the data SDA, and the coil 120 . It may include fifth and sixth terminals for providing a driving signal.

Each of the first to fourth terminals of the position sensor 170 may be electrically connected to a corresponding one of the third to sixth pads of the circuit board 190 , and the third to fourth terminals of the circuit board 190 , respectively. Each of the 6 pads may be electrically connected to a corresponding one of the terminals 19a to 19d 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 pads 9a and 9b of the circuit board 190 , and the circuit board 190 . The first and second pads 9a and 9b of the first and second lower springs 160-1 and 160-2 may be coupled to the corresponding one bonding portion 62a, 62b of the lower springs 160-1 and 160-2, may be electrically connected. That is, the position sensor 190 may provide a driving signal to the coil 120 through the first and second pads 9a and 9b.

In another embodiment, the position sensor 190 may be implemented as a single position detection sensor such as a Hall sensor. In this case, the circuit board 190 may include first to fourth terminals for driving a position sensor implemented as a detection sensor alone and two terminals for providing a driving signal for driving the coils 120 . have. The position sensor implemented by the detection sensor alone may be electrically connected to the first to fourth terminals of the circuit board 190 . In addition, a driving signal may be directly provided from the circuit board 190 to the coil 120 through the fifth and sixth terminals of the circuit board 190 and first and second springs connected thereto.

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

8 shows a bottom view of the lower elastic member 160 and the circuit board 190 coupled to the housing 140 , and FIG. 9 is the lower elastic member 160 , the base 210 , and the circuit board 190 . indicates.

2 , 8 and 9 , 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 be coupled to the upper part, the upper surface, or the upper end of the bobbin 110 and the upper part, the upper surface, or the upper part of the housing 140 , and the lower elastic member 160 is the bobbin 110 . It may be combined with the lower part, the lower surface, or the lower part and the lower part, the lower surface, or the lower part of the housing 140 .

At least one of the upper elastic member 150 and 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 lower spring 160-1 and a second lower spring 160-2 that are spaced apart from each other.

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

The upper elastic member 150 includes a first inner frame 151 coupled to the upper portion, upper surface, or upper end of the bobbin 110 , and a first outer frame 152 coupled to the upper portion, upper surface, 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 .

For example, the upper elastic member 150 may include four first frame connection parts 153 , and the four first frame connection parts are the first to fourth corner parts 142-1 to 142 of the housing 140 . -4) can be located.

The first and second lower springs 160 - 1 and 160 - 2 may be coupled to the bobbin 110 .

Also, the first and second lower springs 160 - 1 and 160 - 2 may be coupled to the bobbin 110 and the housing 140 .

The first and second lower springs 160 - 1 and 160 - 2 may be disposed between the bobbin 110 and the base 210 .

At least one of the first and second lower springs 160-1 and 160-2 is a second inner frame 161 coupled to a lower portion, a lower surface, or a lower end of the bobbin 110, a lower portion of the housing 140, It may include a second outer frame 162 coupled to a lower surface or a lower end, and a second frame connecting portion 163 connecting the second inner frame 161 and the second outer frame 162 .

For example, the second outer frame 162 of the first lower spring 160-1 is the lower or lower surface of the second to fourth side portions 141-2 to 141-4 of the housing 140, and the second and The third corner portions 142-3 and 142-4 may be disposed below or under the lower surface.

A first bonding portion 71a for coupling the first end of the coil 120 to the second outer frame 162 of the first lower spring 160-1, and a first pad 9a of the circuit board 190 ) may be provided with a second bonding portion (62a) to be coupled.

For example, the first bonding portion 71a of the first lower spring 160-1 may be provided at one end of the second outer frame 162 of the first lower spring 160-1, and the first lower spring 160-1 ( The second bonding portion 62a of 160 - 1 may be provided at the other end of the second outer frame 162 of the first lower spring 160 - 1 .

The second outer frame 162 of the second lower spring 160 - 2 includes the first side portion 141-1, the second side portion 141-2, and the fourth side portion 141-4 of the housing 140 . Each of the lower or lower surfaces, and the first corner portion 142-1 and the fourth corner portion 142-4 may be disposed on the lower or lower surface, respectively.

The second outer frame 162 of the second lower spring 160 - 2 includes a third bonding portion 71b for coupling the second end of the coil 120 to the second outer frame 162 , and a second pad 9b of the circuit board 190 . ) and a fourth bonding portion 62b for coupling with may be provided.

For example, the third bonding portion 71b of the second lower spring 160-2 may be provided at one end of the second outer frame 162 of the second lower spring 160-2, and the second lower spring ( The fourth bonding part 62b of 160-2 may be provided at the other end of the second outer frame 162 of the second lower spring 160-2.

For example, the first bonding portion 71a of the first lower spring 160-1 and the third bonding portion 71b of the second lower spring 160-2 are connected to the second side portion 141-2 of the housing 140. ) may be spaced apart from each other on the lower surface or lower part, and may be symmetrical left and right with respect to the first center line, but is not limited thereto. Here, the first 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 second side part 142-2 to the fourth side part 142-4.

A groove 7a for guiding the first end of the coil 120 may be provided in the first bonding portion 71a of the first lower spring 160-1, and A groove 7b for guiding the second end of the coil 120 may be provided in the third bonding portion 71b.

For example, the second bonding portion 62a of the first lower spring 160 - 1 is located on the fourth side portion 141-4 to facilitate coupling with the first pad 9a of the circuit board 190 . 2 It may have a structure protruding toward the circuit board 190 from the outer surface of the outer frame.

For example, the fourth bonding portion 62b of the second lower spring 160-2 is coupled to the fourth side portion 141- of the housing 140 to facilitate coupling with the second pad 9b of the circuit board 190 . 4) may have a structure protruding toward the circuit board 190 from the outer surface of the second outer frame 162 .

That is, each of the second bonding portion 62a of the first lower spring 160-1 and the fourth bonding portion 62b of the second lower spring 160-2 is the fourth side portion 141-4 of the housing 140 . ) may protrude from the outer surface of the second outer frame 162 in a direction from the inner surface to the outer surface.

The second bonding portion 62a and the fourth bonding portion 62b may be disposed spaced apart from each other on the lower or lower surface of the fourth side of the housing 140 and may be symmetrical with respect to the first center line, but this It is not limited.

The first end of the coil 120 may be coupled to the first bonding portion 71a of the first lower spring 160-1 by soldering or a conductive adhesive, and electrically connected to the first lower spring 160-1. can be connected

The second end of the coil 120 may be coupled to the third bonding portion 71b of the second lower spring 160-2 by soldering or a conductive adhesive, and electrically connected to the second lower spring 160-2. can be connected

Each of the first frame connection parts 153 and the second frame connection parts 163 and 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 or more to have a predetermined shape. pattern can be formed. The bobbin 110 may be elastically (or elastically) supported by the rising and/or lowering motions in the first direction through a change in the position of the first and second frame connection parts 153 and 163 and micro-deformation.

In order to absorb and buffer the vibration of the bobbin 110 , the lens driving device 100 may further include a damper (not shown) disposed between the upper elastic member 150 and the housing 140 .

For example, a damper (not shown) may be disposed in a space between the first frame connection part 153 of the upper elastic member 150 and the housing 140 .

Also, for example, the lens driving device 100 includes a damper (not shown) disposed between the housing 140 and the second frame connection portion 163 of each of the first and second lower springs 160-1 and 160-2. may be further provided.

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

Next, the base 210 will be described.

Referring to FIG. 9 , the base 210 may have an opening corresponding to the opening of the bobbin 110 and/or the opening of the housing 140 , and may have a shape corresponding to or coincident with the cover member 300 , for example. , may have a rectangular shape.

The base 210 may include a step 211 at the lower end of the side to which the adhesive may be applied when the cover member 300 is adhesively fixed. In this case, the step 211 may guide 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 step 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 .

At least one of the corners of the upper surface of the base 210 may be provided with a protrusion (not shown), and at least one of the first to fourth corners of the housing 140 may have a lower or lower surface of the base 210 with a protrusion. A guide groove (not shown) corresponding to may be provided. For example, the guide groove of the housing 140 and the protrusion of the base 210 may be coupled to each other by an adhesive member, and the housing 140 may be coupled to the base 210 .

The base 210 may include a stopper 23 protruding from the upper surface.

The stopper 23 may be disposed to correspond to the corners of the upper surface of the base 210 , but is not limited thereto. Also, the stopper 23 may be disposed at a position corresponding to the second frame connection part 163 of the lower springs 160 - 1 and 160 - 2 .

In order to avoid spatial interference between the bobbin 110 and the lower elastic member 160 , the stopper 23 of the base 210 is the second of the lower springs 160 - 1 and 160 - 2 coupled to the base 210 . It may be positioned higher than the frame connection part 163 . The stopper 23 of the base 210 may prevent a lower surface or a lower end of the bobbin 210 from directly colliding with the upper surface of the base 210 when an external impact occurs.

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

For example, the seating groove 210a may be provided on one side of the base 210 corresponding to the fourth side portion 141-4 of the housing 140 .

Referring to FIG. 9 , the circuit board 190 may include an upper end S1 and a lower end S2 . A transverse length of the lower end S2 may be smaller than a transverse length of the upper end S1 .

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

The terminals 19a to 19d may be disposed on the second surface of the lower end S2 of the circuit board 190 , and may have a first lower spring 160- on the first surface of the upper end S1 of the circuit board 190 . First and second pads 9a and 9b for bonding the second bonding portion 62a of 1) and the fourth bonding portion 62b of the second lower spring 160-2 may be provided.

The first and second magnets 130-1 and 130-2, which are driving magnets, and the third magnet 180, which is a sensing magnet, are all mounted on the bobbin 110, and the coil 120 is disposed on the housing 140. By doing so, the embodiment can simplify the structure of the lens driving device and reduce the size.

In addition, since the coil 120 is located inside the sides and corners of the housing 140, the separation distance between the first and second magnets 130-1 and 130-2 and the coil 120 can be reduced. Thereby, it is possible to improve the electromagnetic force due to the interaction.

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

For example, the lens driving device 100 according to the embodiment forms an image of an object in space using reflection, refraction, absorption, interference, diffraction, etc., which are characteristics of light, and aims to increase the visual power of the eye, It may be included in an optical instrument for the purpose of recording and reproducing an image by a lens, or for optical measurement, propagation or transmission of an image, and the like. For example, the optical device according to the embodiment may include a smartphone and a portable terminal equipped with a camera.

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

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

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

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

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

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

The filter 610 may serve to block light of a specific frequency band in 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. In this case, the filter 610 may be disposed 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 may be incident on the image sensor 810 .

The second holder 800 may be disposed under the first holder 600 , and the image sensor 810 may be mounted on the second holder 600 . The image sensor 810 is a region on which the light passing through the filter 610 is incident to form an image included in the light.

The second holder 800 may include various circuits, elements, controllers, etc. to convert an image formed on the image sensor 810 into an electrical signal and transmit it to an external device.

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

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

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

The motion sensor 820 may be 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 due to the movement of the camera module 200 . The motion sensor 820 may be implemented as a 2-axis or 3-axis gyro sensor or an angular velocity sensor.

The control unit 830 is mounted on the second holder 800 . The second holder 800 may be electrically connected to the lens driving device 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 through the second holder 800 , and an output signal of the position sensor 170 may be transmitted to the second holder 800 . For example, an output signal of the position sensor 170 may be received by the controller 830 .

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

13 is a perspective view of a portable terminal 200A according to an embodiment, and FIG. 14 is a configuration diagram of the portable terminal 200A shown in FIG. 13 .

13 and 14, the portable terminal 200A (hereinafter referred to as "terminal") has a body 850, a wireless communication unit 710, an A/V input unit 720, a sensing unit 740, and an 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. 13 is in the form of a bar, but is not limited thereto, and a slide type, a folder type, and a swing type in which two or more sub-bodies are coupled to be movable relative to each other. , and may have various structures such as a 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 in which 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 , a microphone 722 , and the like.

The camera 721 may include the camera module 200 according to the embodiment shown in FIG. 12 .

The sensing unit 740 detects the current state of the terminal 200A, such as the opening/closing state of the terminal 200A, the position of the terminal 200A, the presence or absence of user contact, the orientation of the terminal 200A, acceleration/deceleration of the terminal 200A, etc. It is possible to generate a sensing signal for controlling the operation of the terminal 200A by sensing. 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 sensing functions related to whether the power supply unit 790 is supplied with power 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 sight, hearing, or touch. The input/output unit 750 may generate input data for operation control of the terminal 200A, and may also display information processed by the terminal 200A.

The input/output unit 750 may include a keypad unit 730 , a display module 751 , a sound output module 752 , and a touch screen panel 753 . The keypad unit 730 may generate input data in response to a keypad input.

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

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

The touch screen panel 753 may convert a change in capacitance 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 a program for processing and control of the controller 780, and stores input/output data (eg, phone book, message, audio, still image, photo, video, etc.) Can be temporarily saved. For example, the memory unit 760 may store an image captured by the camera 721 , for example, a photo or a moving picture.

The interface unit 770 serves as a passage for connecting to an external device connected to the terminal 200A. The interface unit 770 receives data from an external device, receives power and transmits it to each component inside the terminal 200A, or transmits data inside the terminal 200A to an external device. For example, the interface unit 770 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 having an identification module, and an audio I/O (Input/O) Output) port, video I/O (Input/Output) port, and may include an earphone port, and the like.

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

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

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

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

Features, structures, effects, etc. 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, etc. illustrated in each embodiment can be combined or modified for other embodiments by a person skilled in the art to which the embodiments belong. Accordingly, the contents related to such combinations and modifications should be interpreted as being included in the scope of the present invention.

Claims (10)

a first side, a second side, a third side opposite the first side, a fourth side opposite the second side, a first corner positioned between the first side and the second side portion, a second corner portion located between the second side and the third side, a third corner portion located between the third side and the fourth side, and between the fourth side and the first side. a housing including a fourth corner positioned;
a first side corresponding to the first side, a second side corresponding to the second side, a third side corresponding to the third side, and a fourth side corresponding to the fourth side; bobbins comprising;
a magnet including a first magnet disposed on the first side surface of the bobbin and a second magnet disposed on the third side surface of the bobbin;
a coil disposed in the housing, surrounding the bobbin, and disposed in the housing; and
A first spring and a second spring coupled to the bobbin and connected to the coil,
The housing includes a support for supporting the coil,
A first opening exposing a part of the coil is provided at the first side of the housing, and a second opening exposing another part of the coil is provided at the third side of the housing. According to claim 1, wherein the support portion,
a first support part disposed between the first corner part and the fourth corner part and supporting a lower surface of the coil;
and a second support part disposed between the second corner part and the third corner part and supporting a lower surface of the coil. According to claim 2, wherein the support portion,
a third support portion protruding from the inner surface of the second side portion; and
The lens driving device further comprising a fourth support that protrudes from the inner surface of the fourth side. 4. The method of claim 3,
The third support includes a groove,
A lens driving device in which a first end and a second end of the coil are disposed in the groove for connection with the first and second springs. 4. The method of claim 3,
A first end of the coil is electrically connected to the first spring, and a second end of the coil is electrically connected to the second spring. 5. The method of claim 4,
One end of the third support part is connected to the inner surface of the second corner part, and the other end of the third support part is connected to the inner surface of the first corner part,
One end of the fourth support part is connected to an inner surface of the third corner part, and the other end of the fourth support part is connected to an inner surface of the fourth corner part. According to claim 1,
a sensing magnet disposed on the fourth side of the bobbin;
a circuit board disposed on the fourth side of the housing;
a position sensor disposed on the circuit board; and
Further comprising a base disposed under the bobbin,
The first and second springs are disposed between the bobbin and the base. According to claim 1,
the second side and fourth sides of the housing in a direction from the second side of the housing to the fourth side do not overlap the first and second magnets;
The first and second magnets overlap the coil in a direction from the first side to the third side of the housing. 8. The method of claim 7,
In a direction from the second side to the fourth side of the housing, the coil overlaps the sensing magnet and the position sensor. 8. The method of claim 7,
Each of the first and second springs,
and an outer frame coupled to the housing;
The outer frame of the first spring electrically connects one end of the coil and the circuit board, and the outer frame of the second spring electrically connects the other end of the coil and the circuit board.

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