KR102357305B1 - Lens driving unit and camera module including the same - Google Patents

Abstract

One embodiment of the lens driving device, the housing; a bobbin provided inside the housing and moving in a first direction; upper and lower elastic members coupled to the housing and the bobbin; a printed circuit board electrically connected to at least one of the upper and lower elastic members; and supporting the housing movably in the second and third directions with respect to the base, electrically connecting at least one of the upper or lower elastic member and the printed circuit board, and having two conductive wires integrally provided It may include at least one support member.

Description

Lens driving unit and camera module including the same}

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

The content described in this section merely provides background information for the embodiment and does not constitute the prior art.

In recent years, the development of IT products such as a mobile phone, a smart phone, a tablet PC, and a notebook computer with a built-in micro digital camera is being 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 such a point, the development of a technology for additionally installing an anti-shake means to a camera module is recently required.

Various methods for preventing hand shake have been studied, and as one of them, there is a technology capable of correcting hand shake by moving an optical module in the x-axis and y-axis corresponding to a plane perpendicular to the optical axis. In the case of this technique, it is necessary to accurately and quickly move the optical system in a plane perpendicular to the optical axis for image correction.

Accordingly, an object of the embodiment is to provide a lens driving device capable of relatively simple, accurate and rapid image stabilization, and a camera module including the same.

The technical task to be achieved by the embodiment is not limited to the technical task mentioned above, and other technical tasks not mentioned will be clearly understood by those of ordinary skill in the art to which the embodiment belongs from the description below.

One embodiment of the lens driving device, the housing; a bobbin provided inside the housing and moving in a first direction; upper and lower elastic members coupled to the housing and the bobbin; a printed circuit board electrically connected to at least one of the upper and lower elastic members; and supporting the housing movably in the second and third directions with respect to the base, electrically connecting at least one of the upper or lower elastic member and the printed circuit board, and having two conductive wires integrally provided It may include at least one support member.

The upper elastic member includes first to fourth upper elastic members separated from each other and electrically connected to the printed circuit board, and fifth and sixth upper elastic members separated from each other and electrically connected to the lower elastic member. and the first to sixth upper elastic members may be separated from each other.

The lower elastic member may include first and second lower elastic members separated from each other.

The support member may include a first support member in which the two conductive wires are respectively connected to any one of the first to fourth upper elastic members.

The first support member may be provided such that the two conductive wires are electrically shorted to each other.

The first support member may be provided in a state in which the two conductive wires are twisted together in a longitudinal direction thereof.

The first support member may be provided with an electrically insulating covering that covers the two conductive wires.

The first support member may include an electrically insulating covering for covering the two conductive wires, and the two conductive wires may be electrically insulated from each other by the covering.

In the support member, any one of the two conductive wires is connected to any one of the first to fourth upper elastic members, and the other one of the two conductive wires is any one of the fifth and sixth upper elastic members It may include a second support member connected to one.

The second support member may include an electrically insulating covering covering the two conducting wires, and the two conducting wires may be electrically insulated from each other by the covering.

An embodiment of the lens driving device may include a conducting member electrically connecting the upper and lower elastic members.

The conducting member may include a first conducting member connecting any one of the fifth and sixth upper elastic members and any one of the first and second lower elastic members.

The conducting member may include a second conducting member connecting the other one of the fifth and sixth upper elastic members and the other one of the first and second lower elastic members.

Each of the fifth and sixth upper elastic members may include a first protruding frame connected to the conducting member.

Each of the first and second lower elastic members may include a second protruding frame formed at a position opposite to the first protruding frame in the first direction and connected to the conducting member.

The support member may be provided in plurality, and the plurality of support members may be provided to be symmetrical to each other in the second and third directions.

The support member may have a lower end fixedly coupled to the printed circuit board.

Another embodiment of the lens driving device includes a housing; a bobbin provided inside the housing and moving in a first direction; upper and lower elastic members coupled to the housing and the bobbin; a printed circuit board electrically connected to at least one of the upper and lower elastic members; and at least supporting the housing to be movable in the second and third directions with respect to the base, connecting at least one of the upper or lower elastic member and the printed circuit board, and at least two conductive wires are integrally provided It includes one support member, and the support member may be provided in a state in which the two conductive wires are twisted together in a longitudinal direction thereof so that they are electrically shorted to each other.

Another embodiment of the lens driving device includes a housing; a bobbin provided inside the housing and moving in a first direction; upper and lower elastic members coupled to the housing and the bobbin; a printed circuit board electrically connected to at least one of the upper and lower elastic members; and at least supporting the housing to be movable in the second and third directions with respect to the base, connecting at least one of the upper or lower elastic member and the printed circuit board, and at least two conductive wires are integrally provided A single supporting member is included, wherein the supporting member has an electrically insulating covering covering the two conducting wires, and the two conducting wires may be electrically insulated from each other by the covering.

Another embodiment of the lens driving device includes a housing; a bobbin provided inside the housing and moving in a first direction; upper and lower elastic members coupled to the housing and the bobbin; a printed circuit board electrically connected to at least one of the upper and lower elastic members; and at least supporting the housing to be movable in the second and third directions with respect to the base, connecting at least one of the upper or lower elastic member and the printed circuit board, and at least two conductive wires are integrally provided It includes one support member, and the support member may include an electrically insulating covering body covering the two conductive wires.

The support member is formed with a portion of the covering body protruding from one end, is disposed between the two conductive wires, and is provided with a protruding insulating portion spaced apart from each other by a predetermined distance so that the adjacent upper elastic members are electrically insulated from each other. can

One embodiment of the camera module, the above-described lens driving device; and an image sensor mounted on the printed circuit board.

In an embodiment, the covering not only electrically insulates the two conductive wires from each other but also serves as a damper, so that the support member is bent in the second and/or third direction when the hand shake correction function is executed. In this case, there is an effect that can alleviate the impact that the conductive wire and the support member including the same can be received.

In addition, in the case of a support member provided in a state in which two conductive wires are twisted with each other in the embodiment, the degree of twisting, that is, the number of rotations about the longitudinal direction to twist the conductive wires with each other, is adjusted to adjust the first support member It has the effect of controlling the elasticity of the

In addition, the support member has an effect of adjusting the rigidity in the first direction by adjusting the twisting degree of the conductive wire.

In addition, since the shorted conducting wire has the effect of reducing the resistance by half compared to the non-shorted conducting wire, when the two conducting wires are shorted and the resistance value of the supporting member is reduced by half, the current consumed for driving for handshake correction has the effect of reducing

1 is a perspective view illustrating a lens driving device according to an exemplary embodiment.
2 is an exploded perspective view illustrating a lens driving device according to an exemplary embodiment.
3 is a perspective view illustrating a part of a component of a lens driving device according to an exemplary embodiment.
4 is a perspective view illustrating a state in which a bobbin and a first coil are excluded in FIG. 3 .
5A is a perspective view illustrating a portion A of FIGS. 3 and 4 ;
5B is a view showing a support member according to an embodiment.
5C is a view showing a support member according to another embodiment.
6A is a perspective view illustrating a portion B of FIGS. 3 and 4 .
6B is a view showing a support member according to another embodiment.
7 is a plan view of FIG. 4 .
8A and 8B are plan views illustrating a portion A of FIG. 7 .
9 is a plan view illustrating a portion B of FIG. 7 .

Hereinafter, an embodiment will be described in detail with reference to the accompanying drawings. Since the embodiment may have various changes and may have various forms, specific embodiments will be illustrated in the drawings and described in detail in the text. However, this is not intended to limit the embodiment to a specific disclosed form, and it should be understood to include all changes, equivalents, and substitutes included in the spirit and scope of the embodiment. In this process, the size or shape of the components shown in the drawings may be exaggerated for clarity and convenience of explanation.

Terms such as “first” and “second” may be used to describe various elements, but the elements should not be limited by the terms. The above terms are used only for the purpose of distinguishing one component from another. In addition, terms specifically defined in consideration of the configuration and operation of the embodiment are only for describing the embodiment, and do not limit the scope of the embodiment.

In the description of the embodiment, in the case where it is described as being formed in "up (up)" or "below (on or under)" of each element, on (on or under) ) includes both elements in which 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)”, the meaning of not only the upward direction but also the downward direction based on one element may be included.

Also, as used hereinafter, relational terms such as "upper/upper/above" and "lower/lower/below" etc. do not necessarily require or imply any physical or logical relationship or order between such entities or elements, It may be used only to distinguish one entity or element from another entity or element.

In addition, a Cartesian coordinate system (x, y, z) may be used in the drawings. In the drawings, the x-axis and y-axis mean a plane perpendicular to the optical axis. For convenience, the optical-axis direction (z-axis direction) may be referred to as the first direction, the x-axis direction as the second direction, and the y-axis direction as the third direction. .

1 is a perspective view illustrating a lens driving device according to an exemplary embodiment. 2 is an exploded perspective view illustrating a lens driving device according to an exemplary embodiment.

An image stabilization device applied to a small camera module of a mobile device such as a smartphone or tablet PC is designed to prevent the outline of the captured image from being clearly formed due to the vibration caused by the user's hand shake when shooting still images. means the device is configured. In addition, the auto-focusing device is a device for automatically focusing the image of the subject on the surface of the image sensor (not shown). Such a hand-shake compensating device and auto-focusing device can be configured in various ways. In the embodiment, the optical module composed of a plurality of lenses is moved in the first direction or by moving with respect to a plane perpendicular to the first direction. A correction operation and/or an auto-focusing operation may be performed.

1 and 2 , the lens driving device according to the embodiment may include a movable part. In this case, the movable unit may perform the functions of auto-focusing the lens and correcting hand shake. The movable part may include a bobbin 110 , a first coil 120 , a first magnet 130 , a housing 140 , an upper elastic member 150 , and a lower elastic member 160 .

The bobbin 110 is provided inside the housing 300, and a first coil 120 disposed inside the first magnet 130 is provided on an outer circumferential surface, and the first magnet 130 and the first coil are provided. It may be installed to be reciprocally movable in the first direction in the inner space of the housing 140 by the electromagnetic interaction between the 120 . A first coil 120 may be installed on the outer peripheral surface of the bobbin 110 to enable electromagnetic interaction with the first magnet 130 .

In addition, the bobbin 110 is elastically supported by the upper and lower elastic members 150 and 160, and can perform an auto-focusing function by moving in the first direction.

The bobbin 110 may include a lens barrel (not shown) in which at least one lens is installed. The lens barrel may be coupled to the inside of the bobbin 110 in various ways.

For example, a female thread may be formed on the inner peripheral surface of the bobbin 110 , and a male thread corresponding to the thread may be formed on the outer peripheral surface of the lens barrel, and the lens barrel may be coupled to the bobbin 110 by screwing them. However, the present invention is not limited thereto, and the lens barrel may be directly fixed to the inside of the bobbin 110 by methods other than screw coupling without forming a screw thread on the inner circumferential surface of the bobbin 110 . Alternatively, the one or more lenses may be integrally formed with the bobbin 110 without a lens barrel.

The lens coupled to the lens barrel may be configured as one sheet, or two or more lenses may be configured to form an optical system.

The auto-focusing function is controlled according to the direction of the current, and the auto-focusing function may be implemented by moving the bobbin 110 in the first direction. For example, when a forward current is applied, the bobbin 110 may move upward from the initial position, and when a reverse current is applied, the bobbin 110 may move downward from the initial position. Alternatively, the movement distance in one direction from the initial position may be increased or decreased by adjusting the amount of current in one direction.

A plurality of upper support protrusions and lower support protrusions may protrude from the upper and lower surfaces of the bobbin 110 . The upper support protrusion may be provided in a cylindrical shape or a prismatic shape, and may couple and fix the upper elastic member 150 . The lower support protrusion may be provided in a cylindrical or prismatic shape like the upper support protrusion, and may couple and fix the lower elastic member 160 .

In this case, a through hole corresponding to the upper support protrusion may be formed in the upper elastic member 150 , and a through hole corresponding to the lower support protrusion may be formed in the lower elastic member 160 . Each of the support protrusions and the through holes may be fixedly coupled to each other by thermal fusion or an adhesive member such as epoxy.

The housing 140 has a hollow column shape supporting the first magnet 130 , and may be formed in a substantially rectangular shape. The first magnet 130 and the support member 220 may be respectively coupled to the side portion of the housing 140 to be disposed. In addition, as described above, the bobbin 110 guided by the housing 140 and moving in the first direction may be disposed on the inner circumferential surface of the housing 140 .

The upper elastic member 150 and the lower elastic member 160 are coupled to the housing 140 and the bobbin 110 , and the upper elastic member 150 and the lower elastic member 160 are the first elastic members of the bobbin 110 . The upward and/or downward movement in the direction can be elastically supported. The upper elastic member 150 and the lower elastic member 160 may be provided as leaf springs.

As shown in FIG. 2 , the upper elastic member 150 may be provided in plurality separated from each other. Through such a multi-division structure, each of the divided portions of the upper elastic member 150 may receive currents having different polarities or different power sources. In addition, the lower elastic member 160 may also have a multi-division structure and may be electrically connected to the upper elastic member 150 .

Meanwhile, the upper elastic member 150 , the lower elastic member 160 , the bobbin 110 , and the housing 140 may be assembled through thermal fusion and/or bonding using an adhesive or the like. In this case, according to the assembly sequence, the fixing operation can be finished by bonding using an adhesive after fixing by heat fusion.

The base 210 is disposed under the bobbin 110 and may be provided in a substantially rectangular shape, and the printed circuit board 250 may be seated thereon.

A support groove having a corresponding size may be formed on a surface of the base 210 facing the portion on which the terminal surface 253 is formed of the printed circuit board 250 . The support groove is formed to be concave inward to a predetermined depth from the outer circumferential surface of the base 210 , so that the portion where the terminal surface 253 is formed does not protrude to the outside or the amount of protrusion can be adjusted.

The support member 220 is disposed on the side surface of the housing 140 , the upper side is coupled to the housing 140 , and the lower side is coupled to the base 210 , and the bobbin 110 and the housing 140 are the It may be supported to be movable in a second direction and a third direction perpendicular to the first direction, and may be electrically connected to the first coil 120 .

Since the support members 220 according to the embodiment are respectively disposed on the outer surfaces of the corners of the housing 140, a total of four may be installed symmetrically. In addition, the support member 220 may be electrically connected to the upper elastic member 150 . That is, for example, the support member 220 may be electrically connected to a portion in which a through hole of the upper elastic member 150 is formed.

In addition, since the support member 220 is formed as a separate member from the upper elastic member 150 , the support member 220 and the upper elastic member 150 may be electrically connected to each other through a conductive adhesive, solder, or the like. Accordingly, the upper elastic member 150 may apply a current to the first coil 120 through the electrically connected support member 220 .

Meanwhile, although the linear support member 220 is illustrated in FIG. 2 as an embodiment, the present invention is not limited thereto. That is, the support member 220 may be provided in the form of a plate-shaped member or the like.

The second coil 230 may perform handshake correction by moving the housing 140 in the second and/or third directions through electromagnetic interaction with the first magnet 130 . Accordingly, the first magnet 130 needs to be installed at a position corresponding to the second coil 230 .

The second coil 230 may be disposed to face the first magnet 130 fixed to the housing 140 . In an embodiment, the second coil 230 may be disposed outside the first magnet 130 . Alternatively, the second coil 230 may be installed to be spaced apart from the lower side of the first magnet 130 by a predetermined distance.

According to an embodiment, a total of four second coils 230 may be installed on four sides of the circuit member 231 , but the present invention is not limited thereto. One for the second direction and one for the third direction. It is also possible that only two, such as a dog, may be installed, or four or more may be installed.

In the case of an embodiment, a circuit pattern is formed in the shape of the second coil 230 on the circuit member 231 , and an additionally separate second coil may be disposed on the circuit member 231 , but the present invention is not limited thereto. A separate second coil 230 may be disposed on the circuit member 231 without forming a circuit pattern in the shape of the second coil 230 on the member 231 .

Alternatively, the second coil 230 may be formed by winding a wire in a donut shape, or the second coil 230 may be formed in the form of an FP coil and electrically connected to the printed circuit board 250 .

The circuit member 231 including the second coil 230 may be installed on the upper surface of the printed circuit board 250 disposed above the base 210 . However, the present invention is not limited thereto, and the second coil 230 may be disposed in close contact with the base 210 , may be disposed spaced apart by a predetermined distance, and may be formed on a separate substrate to attach the second coil 230 to the printed circuit board 250 . It can also be laminated.

The printed circuit board 250 is electrically connected to at least one of the upper elastic member 150 and the lower elastic member 160, is coupled to the upper surface of the base 210, and as shown in FIG. 2 , the A through hole into which the support member 220 is inserted may be formed at a position corresponding to the end of the support member 220 .

A bent terminal surface 253 on which the terminal 251 is installed may be formed on the printed circuit board 250 . Referring to FIG. 7 in the embodiment, a printed circuit board 250 on which two bent terminal surfaces 253 are formed is shown. A plurality of terminals 251 are disposed on the terminal surface 253 to supply current to the first coil 120 and the second coil 230 by receiving external power. The number of terminals formed on the terminal surface 253 may be increased or decreased according to the types of components that need to be controlled. Also, the printed circuit board 250 may include one or three or more terminal surfaces 253 .

The cover member 300 may be provided in a substantially box shape, accommodate the above-described movable part, the second coil 230 , a part of the printed circuit board 250 , and the like, and may be coupled to the base 210 . The cover member 300 protects the movable part, the second coil 230, the printed circuit board 250, etc. accommodated therein from being damaged, and in particular, the first magnet 130, the first magnet accommodated therein. The electromagnetic field generated by the first coil 120 , the second coil 230 , etc. may be restricted from leaking to the outside so that the electromagnetic field is focused.

3 is a perspective view illustrating a part of a component of a lens driving device according to an exemplary embodiment. FIG. 4 is a perspective view illustrating the bobbin 110 and the state excluding the first coil in FIG. 3 . 3 and 4 , the upper elastic member 150 and the lower elastic member 160 may be provided separately in plurality.

For example, the upper elastic member 150 may include a first upper elastic member 150-1, a second upper elastic member 150-2 separated from each other and electrically connected to the printed circuit board 250, It may include a third upper elastic member 150-3 and a fourth upper elastic member 150-4.

In addition, for example, the upper elastic member 150, the fifth upper elastic member 150-5 and the sixth upper elastic member 150-6 separated from each other and electrically connected to the lower elastic member 160 ) may be included. In this case, each of the upper elastic members 150 may be electrically separated from each other to receive power having different polarities.

Also, for example, the lower elastic member 160 may include a first lower elastic member 160-1 and a second lower elastic member 160-2 that are separated from each other. In this case, the first lower elastic member 160-1 may be electrically connected to the sixth upper elastic member 150-6, and the second upper elastic member 150-2 is the fifth upper elastic member. (150-5) may be electrically connected.

The upper elastic member 150 and the lower elastic member 160 may be electrically connected to each other by the conducting member 400 . The conducting member 400 includes any one of a fifth upper elastic member 150-5 and a sixth upper elastic member 150-6, and the first and second lower elastic members 160-1 and 160- 2) may include a first conducting member 400-1 for connecting any one.

In addition, the conducting member 400 includes any one of the fifth upper elastic member 150-5 and the sixth upper elastic member 150-6 and the first and second lower elastic members 160-1. (160-2) may include a second conducting member (400-2) for connecting the other.

That is, as shown in FIGS. 3 and 4, for example, the first conducting member 400-1 electrically connects the sixth upper elastic member 150-6 and the first lower elastic member 160-1. and the second conducting member 400-2 may be provided to electrically connect the fifth upper elastic member 150-5 and the second lower elastic member 160-2.

Meanwhile, each of the fifth upper elastic member 150 - 5 and the sixth upper elastic member 150 - 6 may include a first protruding frame 150a connected to the conducting member 400 . In addition, each of the first lower elastic member 160-1 and the second lower elastic member 160-2 is formed at a position opposite to the first protruding frame 150a in the first direction, and the conducting member A second protrusion frame 160a connected to the 400 may be provided.

In this case, the first protruding frame 150a and the second protruding frame 160a and the conducting member 400 may be fixedly coupled to each other using soldering, an electrically conductive adhesive, or the like. At this time, in order to facilitate the solid coupling and coupling of the first and second projecting frames 150a and the second projecting frame 160a and the energizing member 400, the first projecting frame 150a and the second projecting frame 160a, respectively. A hole or groove into which the conducting member 400 can be inserted may be formed.

On the other hand, it is appropriate for the conducting member 400 to be formed of a flexible material or an elastic material that can be bent in a direction perpendicular to the longitudinal direction as the bobbin 110 moves in the second and third directions.

Meanwhile, the support member 220 supports the housing 300 to be movable in the second and third directions with respect to the base, and includes at least one of the upper or lower elastic members 150 and 160 and the printed circuit. The substrate 250 is electrically connected, and two conductive wires 221 may be provided in an integrated form.

In addition, the plurality of support members 220 may be provided, and the plurality of support members 220 may be provided to be symmetrical to each other in the second and third directions. A specific structure of the support member 220 will be described below.

5A is a perspective view illustrating a portion A of FIGS. 3 and 4 ; 5B is a view showing the support member 220 according to an embodiment. 5C is a view showing the support member 220 according to another embodiment.

The support member 220, the two conductive wires 221 are each connected to any one of the first to fourth upper elastic members (150-1, 150-2, 150-3, 150-4) One support member 220-1 may be included. For example, as shown in FIG. 5A , the first support member 220-1 is a first upper elastic member 150-1 or a third upper elastic member that is electrically directly connected to the printed circuit board 250. It may be provided to be connected to (150-3).

5A, the first support member 220-1 includes an electrically insulating covering 222 covering the two conductive wires 221, and the two conductive wires 221. may be provided to be electrically insulated from each other by the covering body 222 .

At this time, the covering body 222 not only electrically insulates the two conductive wires 221 from each other but also serves as a damper, so that the first supporting member 220-1 is the second When bending in the direction and/or the third direction, the conductive wire 221 and the first support member 220-1 including the same have an effect of mitigating the impact that may be received.

Meanwhile, as described above, the first support member 220-1 and the first upper elastic member 150-1 or the third upper elastic member 150-3 may be electrically connected to each other through a conductive adhesive, solder, or the like. have.

Meanwhile, the first support member 220-1 may be provided such that the two conductive wires 221 are electrically shorted to each other. The first support member 220-1 has one end connected to one upper elastic member 150, for example, the first upper elastic member 150-1 or the third upper elastic member 150-3 in the embodiment. This is because the two conductive wires 221 may be electrically shorted to each other in this case.

5B, for example, the first support member 220-1 is provided in a state in which the two conducting wires 221 are twisted together in the longitudinal direction thereof, and the two conducting wires 221 are Conductive wires 221 may be shorted to each other.

Like the upper elastic member 150 or the lower elastic member 160 , the first support member 220-1 elastically controls the movement of the housing 300 and the bobbin 110 in the second and/or third directions. Since it serves to support the

At this time, it is appropriate that the elastic force of the first support member 220-1 is adjustable in consideration of the performance and operation characteristics of the hand shake correction of the lens driving device.

Accordingly, in the embodiment, in the case of the first support member 220-1 in which the two conductive wires 221 are twisted with each other, the twisting degree, that is, the length of the two conductive wires 221 to twist each other. There is an effect that the elastic force of the first support member 220-1 can be adjusted by adjusting the number of rotations about the direction.

In addition, by adjusting the elastic force of the first support member 220-1, the vibration frequency in the second direction and/or the third direction of the support member 220 can be adjusted when hand shake is corrected, and mechanical resonance can be improved by adjusting the vibration frequency. It has the effect of reducing the maximum value of the amplitude due to mechanical resonance by avoiding it.

In addition, the first support member 220-1 has an effect of adjusting the rigidity in the first direction by adjusting the degree of twisting of the two conductive wires 221 with each other.

In addition, since the resistance value of the conducting wire 221 is proportional to its cross-sectional area, when the two conducting wires 221 are electrically shorted to each other, the cross-sectional area of the entire wire becomes double that of one wire, and thus the shorted wire has the effect of reducing the resistance value by half compared to the unshorted wire.

When the resistance value is reduced by half, there is an effect of reducing the current consumed for driving for image stabilization. Conversely, this has the effect of increasing the supply of current required for driving for image stabilization by reducing the resistance value.

Due to the increase in the current supply, the width of driving in the second direction and/or the third direction of the support member 220 for correcting hand shake may be increased. This is because the amount of current flowing through the support member 220 and the width of driving in the second direction and/or the third direction of the support member 220 are proportional to each other.

As shown in FIG. 5C , for example, in the first support member 220-1, the two conductive wires 221 are twisted together in the longitudinal direction thereof, and the two conductive wires 221 are provided. ) are shorted to each other, and may include an electrically insulating covering 222 covering the two conductive wires 221 .

In the case of this embodiment, the effect that can be obtained by providing the covering body 222 of the embodiment shown in Fig. 5A above, and the two conductive wires 221 of the embodiment shown in Fig. 5B described above in the longitudinal direction It is provided in a twisted state, and there is an advantage in that the effect that can be obtained in a structure in which the two conducting wires 221 are shorted to each other can be obtained at the same time.

6A is a perspective view illustrating a portion B of FIGS. 3 and 4 . 6B is a view showing the support member 220 according to another embodiment.

The support member 220, in another embodiment, any one of the two conductive wires 221 is the first upper elastic member 150-1, the second upper elastic member 150-2, the third The upper elastic member 150-3 and the fourth upper elastic member 150-4 are connected to any one, and the other of the two conductive wires 221 is the fifth upper elastic member 150-5. and a second support member 220-2 connected to any one of the sixth upper elastic members 150-6.

For example, as shown in Figures 6a and 6b, the second support member 220-2, one of the conductive wires 221 is connected to the second upper elastic member 150-2, the conductive wire The other one of 221 may be connected to the fifth upper elastic member 150-5. In this case, the second upper elastic member 150 - 2 and the fifth upper elastic member 150 - 5 may be disposed in an electrically insulated state from each other.

Alternatively, in the second support member 220-2, one of the conductive wires 221 is connected to the fourth upper elastic member 150-4, and the other of the conductive wires 221 is a sixth upper elastic member ( 150-6) can be connected. Similarly, the fourth upper elastic member 150-4 and the sixth upper elastic member 150-6 may be disposed in an electrically insulated state from each other.

In this case, the second support member 220 - 2 includes an electrically insulating covering 222 covering the two conductive wires 221 , and the two conductive wires 221 are provided with the covering body 222 . ) can be electrically insulated from each other. The fifth upper elastic member 150-5 or the sixth upper elastic member 150-6 is configured to be separated from the other upper elastic members, and the remaining upper elastic members are formed by the second supporting member 220-2. It may be electrically connected to the member.

Accordingly, the fifth upper elastic member 150-5 or the sixth upper elastic member 150-6 needs to be disposed so as not to directly contact the other upper elastic members. To this end, a protruding insulating portion 222a may be provided at the upper end of the second support member 220-2, that is, at a portion connected to the upper elastic members 150.

As shown in FIG. 6B , the protruding insulating portion 222a is formed by protruding a part of the covering body 222 from one end of the second support member 220-2, and the two conductive wires 221 ), and may serve to space the upper elastic members 150 adjacent to each other by a predetermined distance so as to be electrically insulated from each other.

One of the conductive wires 221 of the second support member 220-2 is connected to the fifth upper elastic member 150-5 or the sixth upper elastic member 150-6, and the conductive wire 221 ) is connected to the other upper elastic member 150, the protruding insulating part 222a is adjacent to the fifth upper elastic member 150-5 or the sixth upper elastic member 150-6. may be interposed between the remaining upper elastic members 150 to separate the fifth upper elastic member 150-5 or the sixth upper elastic member 150-6 and the remaining upper elastic member 150 by a predetermined distance. .

Due to this structure, the protruding insulating part 222a is positioned so that the fifth upper elastic member 150-5 or the sixth upper elastic member 150-6 and the remaining upper elastic member 150 adjacent to each other are at a close distance. It can serve to prevent an electric short from occurring due to contact with each other.

The covering body 222 provided on the second support member 220-2 is to electrically insulate the two conductive wires 221 from each other, similarly to the covering body 222 of the first supporting member 220-1. In addition, it serves as a damper, and when the second support member 220-2 is bent in the second and/or third direction when the hand shake correction function is executed, the conductive wire 221 and The second support member 220-2 including this may serve to alleviate the shock that may be received.

Meanwhile, like the first support member 220-1, the second support member 220-2 may be electrically connected to each of the upper elastic members 150 through a conductive adhesive, solder, or the like.

FIG. 7 is a plan view of FIG. 4 . 8A and 8B are plan views illustrating a portion A of FIG. 7 . 9 is a plan view illustrating a portion B of FIG. 7 .

7 , in the embodiment, for example, the first support member 220-1 may be connected to the first upper elastic member 150-1 or the third upper elastic member 150-3. Accordingly, in the embodiment, a total of two first support members 220 - 1 may be provided.

In addition, in the embodiment, for example, one of the two conductive wires 221 of the second support member 220-2 is connected to the second upper elastic member 150-2, and the other one is the fifth upper elastic member 150-2. It may be connected to the member 150 - 5 . In addition, one of the two conductive wires 221 of the second support member 220-2 is connected to the fourth upper elastic member 150-4, and the other one is connected to the sixth upper elastic member 150-6. can be connected Accordingly, in the embodiment, a total of two second support members 220 - 2 may be provided.

As a result, in the embodiment, a total of four support members 220 including two first support members 220-1 and two second support members 220-2 may be provided.

As shown in Figure 8a, an embodiment of the first support member 220-1, the upper end of the first upper elastic member 150-1 or the second upper elastic member 150-1 by two conductive wires 221 It may be electrically connected to the member 150 - 2 .

Although the cross-section of the support member 220 is approximately formed in an elliptical shape in FIG. 8A , the cross-section of the support member 220 is not limited thereto, and the cross-section of the support member 220 may be provided in a circular shape, a polygonal shape, or other various shapes.

As shown in FIG. 8B , another embodiment of the first support member 220-1 is not provided with the covering 222 as described above with reference to FIG. 5B and two conductive wires 221 are twisted with each other. may be provided in the form.

In this case as well, the first support member 220-1 does not only include the covering body 222, and as described with reference to FIG. It may be electrically connected to the upper elastic member 150-1 or the second upper elastic member 150-2.

As shown in FIG. 9 , in one embodiment of the second support member 220 - 2 , the upper end thereof is attached to the second upper elastic member 150-2 and the fifth upper elastic member 150-5. can be connected At this time, one of the conductive wires included in the second support member 220-2 is connected to the second upper elastic member 150-2, and the other one is connected to the fifth upper elastic member 150-5 and can be connected

In addition, the upper end of the second support member 220-2 may be connected to the fourth upper elastic member 150-4 and the sixth upper elastic member 150-6. At this time, one of the conductive wires included in the second support member 220-2 is connected to the fourth upper elastic member 150-4, and the other one is connected to the sixth upper elastic member 150-6 and the second support member 220-2. can be connected

As described above, in FIG. 9 , the cross section of the second support member 220-2 is approximately formed in an elliptical shape, but the present invention is not limited thereto. can be

The protruding insulating part 222a is, for example, interposed between the second upper elastic member 150-2 and the fifth upper elastic member 150-5, or the fourth upper elastic member 150-4. ) and the sixth upper elastic member 150-6 interposed therebetween so that the adjacent elastic members are spaced apart from each other by a predetermined distance so as not to directly contact each other, thereby serving to be electrically insulated from each other.

On the other hand, the covering body 222 that surrounds and insulates the conductive wire 221 or the protruding insulating portion 222a formed in the covering body 222 may be any material having electrical insulation properties. For example, considering the ease of manufacturing the support member 220 and manufacturing cost, the covering body 222 or the protruding insulating part 222a may be formed using a polymer-based material.

Meanwhile, the lens driving apparatus according to the above-described embodiment may be used in various fields, for example, a camera module. For example, the camera module may be applied to a mobile device such as a mobile phone.

The camera module according to the embodiment may include a lens barrel coupled to the bobbin 110 , an image sensor (not shown), a printed circuit board 250 , and an optical system.

The lens barrel is the same as described above, and the printed circuit board 250 may form the bottom surface of the camera module from the portion where the image sensor is mounted.

In addition, the optical system may include at least one lens that transmits an image to the image sensor. In this case, an actuator module capable of performing an auto-focusing function and a hand-shake correction function may be installed in the optical system. The actuator module performing the auto-focusing function may be configured in various ways, and a voice coil unit motor is generally used. The lens driving apparatus according to the above-described embodiment may serve as an actuator module that performs both an auto-focusing function and a hand-shake correction function.

In addition, the camera module may further include an infrared cut filter (not shown). The infrared cut filter serves to block light in the infrared region from being incident on the image sensor. In this case, in the base 210 illustrated in FIG. 2 , an infrared cut filter may be installed at a position corresponding to the image sensor, and may be coupled to a holder member (not shown). In addition, the base 210 may support the lower side of the holder member.

A separate terminal member may be installed on the base 210 to conduct electricity with the printed circuit board 250 , and it is also possible to integrally form the terminal using a surface electrode or the like. Meanwhile, the base 210 may function as a sensor holder to protect the image sensor, and in this case, a protrusion may be formed in a downward direction along the side surface of the base 210 . However, this is not an essential configuration, and although not shown, a separate sensor holder may be disposed under the base 210 to perform its role.

Although only a few have been described as described above in relation to the embodiments, various other forms of implementation are possible. The technical contents of the above-described embodiments may be combined in various forms unless they are incompatible with each other, and may be implemented as a new embodiment through this.

110: bobbin
150: upper elastic member
150a: first projecting frame
150-1: first upper elastic member
150-2: second upper elastic member
150-3: the third upper elastic member
150-4: fourth upper elastic member
150-5: fifth upper elastic member
150-6: sixth upper elastic member
160: lower elastic member
160a: second protruding frame
160-1: first lower elastic member
160-2: second lower elastic member
220: support member
220-1: first support member
220-2: second support member
221: conductive wire
222: cover body
222a: protruding insulation
250: printed circuit board
300: housing
400: energizing member
400-1: first conducting member
400-2: second conducting member

Claims (22)

housing;
a bobbin provided inside the housing and moving in a first direction;
upper and lower elastic members coupled to the housing and the bobbin;
a printed circuit board electrically connected to at least one of the upper and lower elastic members; and
At least one supporting the housing to be movable in the second and third directions with respect to the base, electrically connecting at least one of the upper or lower elastic member and the printed circuit board, and having two conductive wires integrated therein support member of
including,
The upper elastic member,
It includes first to fourth upper elastic members separated from each other and electrically connected to the printed circuit board, and further comprising fifth and sixth upper elastic members separated from each other and electrically connected to the lower elastic member, wherein the The first to sixth upper elastic members are separated from each other. delete According to claim 1,
The lower elastic member,
A lens driving device comprising first and second lower elastic members separated from each other. 4. The method of claim 3,
The support member is
and a first support member in which the two conductive wires are connected to any one of the first to fourth upper elastic members, respectively. 5. The method of claim 4,
The first support member,
The lens driving device, characterized in that the two conductive wires are provided to be electrically shorted to each other. 6. The method of claim 5,
The first support member,
The lens driving device, characterized in that the two conductive wires are provided in a state in which they are twisted with each other in the longitudinal direction. 6. The method of claim 5,
The first support member,
and an electrically insulating covering covering the two conductive wires. 5. The method of claim 4,
The first support member,
and an electrically insulating covering covering the two conducting wires, wherein the two conducting wires are electrically insulated from each other by the covering. 4. The method of claim 3,
The support member is
Any one of the two conductive wires is connected to any one of the first to fourth upper elastic members, and the other one of the two conductive wires is connected to any one of the fifth and sixth upper elastic members. A lens driving device comprising two supporting members. 10. The method of claim 9,
The second support member,
and an electrically insulating covering covering the two conducting wires, wherein the two conducting wires are electrically insulated from each other by the covering. 10. The method of claim 9,
and a conducting member electrically connecting the upper and lower elastic members. 12. The method of claim 11,
The conducting member is
A lens driving device comprising a first conducting member connecting any one of the fifth and sixth upper elastic members and any one of the first and second lower elastic members. 13. The method of claim 12,
The conducting member is
and a second conducting member connecting the other one of the fifth and sixth upper elastic members and the other one of the first and second lower elastic members. 12. The method of claim 11,
Each of the fifth and sixth upper elastic members,
A lens driving device comprising a first protruding frame connected to the conducting member. 15. The method of claim 14,
Each of the first and second lower elastic members,
and a second protruding frame formed at a position opposite to the first protruding frame in a first direction and connected to the conducting member. According to claim 1,
The support member is
It is provided in plurality, and the plurality of support members are provided to be symmetrical to each other in the second and third directions. According to claim 1,
The support member is
A lens driving device, characterized in that the lower end is fixedly coupled to the printed circuit board. housing;
a bobbin provided inside the housing and moving in a first direction;
upper and lower elastic members coupled to the housing and the bobbin;
a printed circuit board electrically connected to at least one of the upper and lower elastic members; and
At least one supporting the housing movably in the second and third directions with respect to the base, connecting at least one of the upper or lower elastic member and the printed circuit board, and having at least two conductive wires integrally provided including a support member;
The support member is
A lens driving device provided in a state in which the two conductive wires are twisted together in a longitudinal direction thereof so that they are electrically shorted to each other. delete housing;
a bobbin provided inside the housing and moving in a first direction;
upper and lower elastic members coupled to the housing and the bobbin;
a printed circuit board electrically connected to at least one of the upper and lower elastic members; and
At least one supporting the housing movably in the second and third directions with respect to the base, connecting at least one of the upper or lower elastic member and the printed circuit board, and having at least two conductive wires integrally provided including a support member;
The support member is
An electrically insulating covering covering the two conductive wires is provided;
The support member is
A lens driving device comprising: a protruding insulating part formed to protrude from one end of the covering, disposed between the two conductive wires, and spaced apart from each other by a predetermined distance so that the adjacent upper elastic members are electrically insulated from each other. delete A lens driving device according to any one of claims 1, 3 to 18, and 20; and
A camera module including an image sensor mounted on the printed circuit board.

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