KR20170126581A - Lens driving apparatus, and camera module and mobile device including the same - Google Patents

Abstract

According to an embodiment of the present invention, a lens driving apparatus with a slim structure comprises: a bobbin installed to move in a first direction; a first coil installed in an outer circumferential surface of the bobbin; a housing wherein the bobbin is installed in an inner side thereof; a first magnet coupled to the housing; an upper elastic member arranged on an upper side of the bobbin, and coupled to the bobbin and the housing; a circuit member including a second coil arranged to face the first magnet; a printed circuit board arranged on a lower side of the circuit member to electrically be connected to the circuit member; a base arranged on a lower side of the printed circuit board; and a support member arranged on a corner of the housing to support the housing. An upper end of the support member is coupled to the upper elastic member, and a lower end of the support member is coupled to the printed circuit board.

Description

[0001] The present invention relates to a lens driving apparatus, a camera module including the lens driving apparatus, and a portable device including the lens driving apparatus,

Embodiments relate to a lens driving device, a camera module including the lens driving device, and a portable device.

The contents described in this section merely provide background information on the embodiment and do not constitute the prior art.

A mobile phone or a smart phone equipped with a camera module that performs a function of photographing a subject and storing the image or moving image is being developed. Generally, the camera module may include a lens, an image sensor module, and a lens drive device that adjusts the distance between the lens and the image sensor module.

Portable devices such as mobile phones, smart phones, tablet PCs, and notebooks are equipped with ultra-compact camera modules. The lens driving device can perform auto focusing to adjust the focal length of the lens by adjusting the distance between the image sensor and the lens.

In addition, the camera module may be shaken finely due to user's hand movements during photographing of a subject. In order to correct distortion of an image or a moving image due to a shaking of a user, a lens having an optical image stabilizer (OIS) A driving device is being developed.

Embodiments relate to a lens driving apparatus having a generally slim structure, a camera module including the lens driving apparatus, and a portable device.

It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory and are intended to provide further explanation of the invention as claimed.

One embodiment of the lens driving device includes: a bobbin installed to move in a first direction; A first coil installed on an outer circumferential surface of the bobbin; A housing having the bobbin installed therein; A first magnet coupled to the housing; An upper elastic member provided on the bobbin and coupled to the bobbin and the housing; A circuit member including a second coil arranged to face the first magnet; A printed circuit board disposed below the circuit member and electrically connected to the circuit member; A base disposed below the printed circuit board; And a support member disposed at a corner of the housing and supporting the housing, wherein the support member is coupled to the upper elastic member and the lower end is coupled to the printed circuit board.

The supporting member may be a wire type, the upper end may be soldered to the upper elastic member, and the lower end may be soldered to the printed circuit board.

The upper elastic member may be formed with a first through hole into which the supporting member is inserted.

The diameter of the first through-hole may be larger than the diameter of the support member.

The circuit member may have a second through hole into which the supporting member is inserted, and the printed circuit board may have a third through hole into which the supporting member is inserted at a position corresponding to the second through hole.

The diameter of the second through hole and the diameter of the third through hole may be larger than the diameter of the support member.

The diameter of the second through-hole may be larger than the diameter of the third through-hole.

The diameter of the second through hole may be 0.3 mm to 0.4 mm.

The diameter of the third through-hole may be 0.15 mm to 0.25 mm.

And the support member may be coupled to the upper surface of the upper elastic member through the first through hole.

The supporting member may penetrate the second through hole and the third through hole and may be coupled to a lower surface of the printed circuit board.

An embodiment of the lens driving device may include a first connecting portion electrically connecting the printed circuit board and the circuit member to each other; And a second connection portion electrically connecting the printed circuit board and the support member to each other.

The first connection portion and the second connection portion may be disposed at corner portions of the printed circuit board, the circuit member, and the support member, and the first connection portion may be disposed at one side or both sides of the first connection portion.

The first connection unit includes a first terminal provided on the printed circuit board in a "C" shape or a semicircular shape; And a second terminal disposed at a position corresponding to the first terminal on the circuit member.

Wherein the first terminal is provided so as to surround at least a part of an upper surface, a lower surface and a side surface of the printed circuit board, the second terminal is provided at a lower surface of the circuit member and spaced apart from a side surface of the circuit member, The surface area of the printed circuit board may be formed to be smaller than the surface area of the circuit member so that the first terminal and the second terminal come into contact with or join with each other.

The number of the first connection portions may be four, and the number of the second connection portions may be four or eight.

The number of the first connection portions may be eight, and the number of the second connection portions may be four or eight.

The supporting member may be elastically deformable in a first section between the upper surface of the upper elastic member and the lower surface of the printed circuit board.

The printed circuit board may have a thickness of 0.1 mm to 0.2 mm measured in the first direction.

An embodiment of the lens driving device may be such that a recess is formed in the corner of the base so that the supporting member engages with the lower surface of the printed circuit board.

One embodiment of the lens driving device may further include a lower elastic member provided below the bobbin and coupled to the bobbin and the housing.

Another embodiment of the lens driving device includes: a bobbin installed to move in a first direction; A first coil installed on an outer circumferential surface of the bobbin; A housing having the bobbin installed therein; A first magnet coupled to the housing; An upper elastic member provided on the bobbin and coupled to the bobbin and the housing; A circuit member including a second coil arranged to face the first magnet; A printed circuit board disposed below the circuit member and electrically connected to the circuit member; A base disposed below the printed circuit board; And a support member disposed at a corner of the housing and supporting the housing, wherein the support member has an upper end coupled to the upper elastic member, a lower end coupled to the printed circuit board, May be elastically deformable in a first section between the upper surface of the printed circuit board and the lower surface of the printed circuit board.

One embodiment of the camera module comprises: a lens driving device; And an image sensor mounted on the lens driving device.

One embodiment of a portable device includes a display module including a plurality of pixels whose color changes by an electrical signal; The camera module converting an image incident through a lens into an electrical signal; And a controller for controlling operations of the display module and the camera module.

In the embodiment, the overall length of the lens driving device in the first direction can be reduced by increasing the length of the elastically deformable portion of the support member in the first direction, that is, the elastic deformation section.

In other words, in the embodiment, the length of the lens driving device in the first direction can be reduced by a sum of the thickness measured in the first direction of the upper elastic member and the thickness measured in the first direction of the printed circuit board. Therefore, the entire lens driving apparatus can be manufactured with a slim structure.

As the elastic deformation section increases, the tilt angle of the support member with respect to the first direction, that is, the tilt angle, may be reduced when the camera shake correction function is performed.

As the tilt angle is reduced, deterioration in image quality due to excessive tilting of the bobbin in the first direction can be suppressed when the shake correction function is performed.

1 is a perspective view showing a lens driving apparatus according to an embodiment.
2A is an exploded perspective view showing a lens driving apparatus according to an embodiment.
FIG. 2B is an exploded perspective view showing the arrangement of the bobbin and the first magnet according to the embodiment.
2C is a perspective view of the housing according to one embodiment
3 is a perspective view showing a state in which a cover member is removed from a lens driving apparatus according to an embodiment.
Fig. 4 is a plan view of Fig. 3. Fig.
5 is an enlarged view showing part A1 of FIG.
6 is a perspective view for explaining a structure of a circuit member and a printed circuit board in a lens driving apparatus according to an embodiment.
7 is a cross-sectional view showing the portion A2 in Fig.
8A is an enlarged view showing a portion A3 in FIG.
8B is a view for explaining the electrical connection structure between the circuit member and the printed circuit board.
9 is a perspective view illustrating a portable device according to an embodiment.
10 is a configuration diagram of the portable device shown in Fig.

Hereinafter, embodiments will be described in detail with reference to the accompanying drawings. The embodiments are to be considered in all aspects as illustrative and not restrictive, and the invention is not limited thereto. It is to be understood, however, that the embodiments are not intended to be limited to the particular forms disclosed, but are to include all modifications, equivalents, and alternatives falling within the spirit and scope of the embodiments.

The terms "first "," second ", and the like can be used to describe various components, but the components should not be limited by the terms. The terms are used for the purpose of distinguishing one component from another. In addition, terms specifically defined in consideration of the constitution and operation of the embodiment are only intended to illustrate the embodiments and do not limit the scope of the embodiments.

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

It is also to be understood that the terms "top / top / top" and "bottom / bottom / bottom", as used below, do not necessarily imply nor imply any physical or logical relationship or order between such entities or elements, And may be used to distinguish one entity or element from another entity or element.

Further, in the drawings, an orthogonal coordinate system (x, y, z) can be used. In the drawing, the x axis and y axis mean a plane perpendicular to the optical axis. For convenience, the optical axis direction (z axis direction) can be referred to as a first direction, the x axis direction as a second direction, and the y axis direction as a third direction .

1 is a perspective view showing a lens driving apparatus according to an embodiment. 2A is an exploded perspective view showing a lens driving apparatus according to an embodiment.

An image stabilizer applied to a small-sized camera module of a portable device such as a smart phone or a tablet PC is a device that can prevent an outline of a photographed image from being formed due to vibration caused by a shaking motion of a user at the time of shooting a still image Means a configured device.

The auto focusing apparatus is a device that automatically focuses an image of an object on an image sensor (not shown). In this embodiment, the optical module including a plurality of lenses may be moved in a first direction, or may be moved in a direction perpendicular to the first direction. In this case, Operation and / or auto focusing operation.

As shown in FIG. 2A, the lens driving apparatus according to the embodiment may include a movable portion and a fixed portion. At this time, the movable part can perform the auto focusing function of the lens. The movable part may include a bobbin 110 and a first coil 120. The fixed part may include a first magnet 130, a housing 140, an upper elastic member 150, and a lower elastic member 160 have.

The bobbin 110 is provided inside the housing 140 and has a first coil 120 disposed on the inner circumference of the first magnet 130. The first magnet 130 and the first coil 130, (120) so as to reciprocate in a first direction in an inner space of the housing (140). The first coil 120 may be installed on the outer circumferential surface of the bobbin 110 to enable electromagnetic interaction with the first magnet 130.

Further, the bobbin 110 is elastically supported by the upper and lower elastic members 150 and 160, and can perform the 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, female threads may be formed on the inner circumferential surface of the bobbin 110, male thread corresponding to the threads may be formed on the outer circumferential surface of the lens barrel, and the lens barrel may be coupled to the bobbin 110 by screwing.

However, the present invention is not limited thereto, and the lens barrel may be directly fixed to the inside of the bobbin 110 by a method other than screwing, without forming a thread on the inner circumferential surface of the bobbin 110. Alternatively, the one or more lenses may be formed integrally with the bobbin 110 without a lens barrel.

The lens coupled to the lens barrel may be composed of a single lens, or two or more lenses may be configured to form an optical system.

The auto focusing function is controlled according to the direction and / or the current amount of the current, and the auto focusing function may be implemented by moving the bobbin 110 in the first direction. For example, when the forward current is applied, the bobbin 110 can move upward from the initial position, and when the reverse current is applied, the bobbin 110 can move downward from the initial position. Alternatively, the amount of unidirectional current may be adjusted to increase or decrease the movement distance from the initial position in one direction.

The upper and lower surfaces of the bobbin 110 may have a plurality of upper support protrusions and lower support protrusions. The upper support protrusions may be cylindrical or prismatic and may be coupled and fixed to the upper elastic member 150 by guiding the upper elastic member 150. The lower support protrusions may be cylindrical or prismatic like the upper support protrusions, and may be coupled to and fixed to the lower elastic member 160 by guiding the lower elastic member 160.

At this time, a through hole and / or a groove corresponding to the upper supporting protrusion may be formed on the upper elastic member 150, and a through hole and / or groove corresponding to the lower supporting protrusion may be formed on the lower elastic member 160. Each of the support protrusions and the through holes and / or the grooves may be fixedly joined by an adhesive member such as heat seal or epoxy.

The housing 140 has a hollow column shape for supporting the first magnet 130, and may be formed in a substantially rectangular shape. The first magnet 130 may be coupled to the side surface of the housing 140. As described above, the bobbin 110, which is guided by the elastic members 150 and 160 and moves in the first direction, may be installed inside the housing 140.

The upper elastic member 150 may be provided on the upper side of the bobbin 110 and the lower elastic member 160 may be provided on the lower side of the bobbin 110. 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 coupled to the first And / or downward motion in the direction of the arrow. The upper elastic member 150 and the lower elastic member 160 may be formed of leaf springs.

As shown in FIG. 2A, the upper elastic members 150 may be separated from each other. With this multi-split structure, each of the divided portions of the upper elastic member 150 can be supplied with electric currents of different polarities or different electric powers, or can be current-carrying passages. Also, the lower elastic member 160 may have a multi-split 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 heat bonding and / or bonding using an adhesive or the like.

The base 210 is disposed on the lower side of the printed circuit board 250 and the circuit member 231 and may be provided in a substantially rectangular shape and the printed circuit board 250 may be disposed or seated. That is, the printed circuit board 250 may be disposed between the circuit member 231 and the base 210.

A supporting groove having a corresponding size may be formed on the surface of the base 210 opposite to the portion on which the terminal surface 253 of the printed circuit board 250 is formed. The support groove is recessed to a certain depth from the outer circumferential surface of the base 210 so that the portion where the terminal surface 253 is formed is prevented from protruding outward or can be adjusted.

The support member 220 is disposed on the side surface of the housing 140, for example, at a corner of the housing 140 so as to be spaced apart from the housing 140, and the upper side is coupled to the upper side elastic member 150, The bobbin 110 and the housing 140 may be coupled to the substrate 250 to support the bobbin 110 and the housing 140 so as to be movable in a second direction and / or a third direction perpendicular to the first direction, (Not shown). The support member 220 may be coupled to the base 210 or the circuit member 231 on the lower side in another embodiment.

A pair of support members 220 according to the embodiment is disposed on the outer surface of the corner of the housing 140, so that a total of eight support members 220 can be installed. In another embodiment, the supporting member 220 may be provided on the outer surface of the corner of the housing 140, four in total.

Alternatively, in the case of another embodiment, two pieces may be arranged at two corners and one piece at the other two corners so that a total of six pieces may be arranged. Or, as the case may be, a total of seven or more than nine may be arranged.

Further, 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 where the through hole of the upper elastic member 150 is formed.

The support member 220 and the upper elastic member 150 are electrically connected to each other through a conductive adhesive agent, soldering, . Accordingly, the upper elastic member 150 can apply an electric current to the first coil 120 through the electrically connected support member 220.

The support member 220 may be connected to the printed circuit board 250 through a through hole formed in the circuit member 231 and / or the printed circuit board 250. Or the support member 220 may be electrically soldered to a corresponding portion of the circuit member 231 without forming a through hole in the circuit member 231 and / or the printed circuit board 250. [

In FIG. 2A, a wire type supporting member 220 is shown as an embodiment, but the present invention is not limited thereto. That is, the support member 220 may be provided in the form of a plate-like member or the like.

The second coil 230 can perform the camera shake correction function by moving the housing 140 in the second and / or third directions through an electromagnetic interaction with the first magnet 130.

Here, the second and third directions may include directions substantially in the x-axis (or the first direction), the y-axis (or the second direction) as well as the x- and y-axis directions. In other words, as seen from the driving aspect of the embodiment, the housing 140 may move parallel to the x- and y-axes, but may also be slightly inclined to the x- and y-axes when it is supported by the support member 220 have.

Therefore, 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 at a predetermined distance below the first magnet 130.

According to the embodiment, a total of four second coils 230 may be provided on four side portions of the circuit member 231, but the present invention is not limited thereto. For example, one second coil 230, Only two can be installed, and four or more can be installed.

Or one in the first direction for the second direction, two in the second direction for the second direction, one in the third direction for the third direction, and two in the fourth direction for the third direction, . Alternatively, in this case, the first side and the fourth side may be adjacent to each other, and the second side and the third side may be adjacent to each other.

A circuit pattern may be formed on the circuit member 231 in the form of a second coil 230 or a separate second coil may be disposed on the circuit member 231. However, A circuit pattern may be formed directly on the member 231 in the form of a second coil 230.

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

The circuit member 231 including the second coil 230 may be installed or disposed on the upper surface of the printed circuit board 250 arranged to face the first magnet and disposed on the upper side of the base 210 .

However, the present invention is not limited thereto. The second coil 230 may be disposed closely to the base 210, may be spaced apart from the base 210, may be separately formed on the substrate, It may 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 and is coupled to the upper surface of the base 210, A through hole into which the support member 220 is inserted may be formed at a position corresponding to an end of the support member 220. Or may be electrically connected and / or bonded to the support member without forming a through hole.

The printed circuit board 250 may be disposed on the lower side of the circuit member 231 and may be electrically connected to the circuit member 231, 230, respectively.

A terminal 251 may be disposed or formed on the printed circuit board 250 and the terminal 251 may be disposed on the bent terminal surface 253. A plurality of terminals 251 are disposed on the terminal surface 253 to supply a current to the first coil 120 and / or the second coil 230 by receiving external power. The number of terminals formed on the terminal surface 253 may be increased or decreased depending on the type of components that need to be controlled. In addition, the printed circuit board 250 may have one or more terminal surfaces 253.

The cover member 300 may be provided in a substantially box shape and may receive a part or all of the movable part, the second coil 230 and the printed circuit board 250 and may be coupled with the base 210. Further, a part of the cover member 300 may be disposed on the upper side of the support member 220. [

The cover member 300 can protect the movable part, the second coil 230, the printed circuit board 250 and the like accommodated in the cover member 300 from being damaged and further includes a first magnet 130 The electromagnetic field generated by the first coil 120, the second coil 230, and the like may be restricted from leaking to the outside so that the electromagnetic field may be focused.

Hereinafter, the structure of the bobbin 110 and the housing 140 will be described in more detail with reference to FIGS. 2B, 2C, and the like. FIG. 2B is an exploded perspective view illustrating the arrangement of the bobbin 110 and the first magnet 130 according to the embodiment.

The bobbin 110 is disposed inside the housing 140 and is movable in the first direction, that is, the z-axis direction, by electromagnetic interaction between the first coil 120 and the first magnet 130.

The bobbin 110 may have a hollow structure for mounting a lens or lens barrel. The hollow shape may be circular, elliptical, or polygonal, but is not limited thereto.

The bobbin 110 may include first and second protrusions 111 and 112. The first protrusion 111 of the bobbin 110 may include a guide portion 111a and a first stopper 111b.

The guide portion 111a of the bobbin 110 may serve to guide the installation position of the upper elastic member 150. [ For example, the guide portion 111a of the bobbin 110 may guide a path through which a part of the upper elastic member 150 passes.

For example, a plurality of guide portions 111a may be formed to protrude in the second and third directions perpendicular to the first direction. In addition, the guide portion 111a may be provided symmetrically with respect to the center of the bobbin 110 on a plane formed by the x-axis and the y-axis, and may have an asymmetric structure excluding interference with other components .

The second protrusion 112 of the bobbin 110 may protrude in the second and third directions perpendicular to the first direction. The upper surface 112a of the second protrusion 112 of the bobbin 110 may have a shape in which the upper elastic member 150 can be seated.

The first stopper 111b and the second protrusion 112 of the first protrusion 111 of the bobbin 110 are moved in the first direction for the auto focusing function by the bobbin 110 Can prevent the bottom surface of the bobbin 110 from directly colliding with the upper surface of the base 210 and the upper surface of the circuit board 250 even if the bobbin 110 moves beyond the predetermined range.

When the bottom surface of the first and second projections 111 and 112 of the bobbin 110 and the bottom surface 146a of the first seating groove 146 of the housing 140 are in contact with each other at the initial position, Function can be controlled like a unidirectional control in a conventional voice coil motor (VCM). That is, when the current is supplied to the first coil 120, the bobbin 110 rises, and when the supply of current is interrupted, the bobbin 110 falls and an auto-focusing function can be realized.

However, if the bottom surface of the first and second projections 111 and 112 of the bobbin 110 and the bottom surface 146a of the first seating groove 146 are spaced apart from each other by a predetermined distance, Can be controlled in both directions according to the direction of the current. That is, the autofocusing function may be realized by moving the bobbin 110 upward or downward in the first direction.

For example, when the forward current is applied, the bobbin 110 can move upward, and when the reverse current is applied, the bobbin 110 can move downward.

2C is a perspective view of the housing 140 according to one embodiment. The housing 140 may have a first seating groove 146 formed at a position corresponding to the first and second projections 111 and 112 of the bobbin 110. [ The housing 140 may have a third protrusion 148 corresponding to a space having a first width W1 between the first and second protrusions 111 and 112 of the bobbin 110. [

The surface of the third protrusion 148 of the housing 140 facing the bobbin 110 may have the same shape as the side of the bobbin 110. At this time, the first width W1 between the first and second protrusions 111 and 112 of the bobbin 110 shown in Fig. 2C and the width W2 of the third protrusion 148 of the housing 140 shown in Fig. The second width W2 may have a certain tolerance.

The rotation of the third protrusion 148 of the housing 40 between the first and second protrusions 111 and 112 of the bobbin 110 can be restricted. The third protrusion 148 of the housing 140 can prevent the bobbin 110 from rotating, even if the bobbin 110 is subjected to a force in the direction of rotation about the optical axis, not in the optical axis direction.

Meanwhile, in order to prevent direct collision with the inner surface of the cover member 300 shown in FIGS. 1 and 2A, the housing 140 may be provided with a second stopper 144 at an upper end thereof.

The housing 140 may have at least one upper support protrusion 143 on its upper surface for engagement with the upper elastic member 150.

For example, the upper support protrusion 143 of the housing 140 may be formed on the upper surface of the edge portion of the housing 140. The upper support protuberance 143 of the housing 140 may have a hemispherical shape as illustrated, but may otherwise have a cylindrical shape or a prismatic shape, but the present invention is not limited thereto.

Although not shown, the housing 140 may include at least one lower support protrusion 145 on the lower surface of the corner of the housing for coupling with the lower elastic member 160. The lower support protrusions 145 may be formed in a shape corresponding to the position corresponding to the upper support protrusions, but the present invention is not limited thereto.

The housing 140 may have a first groove 142a formed at the side of the corner to secure a space for filling gel-type silicon capable of damping. That is, the groove 142a of the housing 140 may be filled with damping silicon.

The housing 140 may have a plurality of third stoppers 149 projecting from the sides of each side. The third stopper 149 may prevent the housing 140 from colliding with the cover member 300 when the housing 140 moves in the second and third directions.

The housing 140 may further include a fourth stopper (not shown) protruding from the lower surface of the housing 140 to prevent the bottom surface of the housing 140 from colliding with the base 210 or the circuit board 250. With this configuration, the housing 140 can be spaced apart from the base 210 downward, and spaced apart from the cover member 300 at the upper side, so that the height in the optical axis direction can be maintained without vertical interference.

3 is a perspective view showing a state in which a cover member is removed from a lens driving apparatus according to an embodiment. Fig. 4 is a plan view of Fig. 3. Fig. 5 is an enlarged view showing part A1 of FIG. Meanwhile, for clarity, FIG. 5 shows a structure in which the first soldering portion SD1 is removed.

In an embodiment, the support member 220 may have an upper end coupled to the upper elastic member 150 and a lower end coupled to the printed circuit board 250. The structure in which the lower end of the support member 220 is coupled to the printed circuit board 250 will be described in detail below with reference to FIG. First, a structure in which the upper end of the support member 220 is engaged with the upper elastic member 150 will be described.

The support member 220 may be linearly formed, and the upper end may be engaged with the upper elastic member 150. 5, a first through hole TH1 through which the support member 220 is inserted is formed in the upper side elastic member 150 for the connection of the support member 220 and the upper side elastic member 150 . At this time, the upper end of the support member 220 and the upper elastic member 150 may be soldered to each other.

The first through holes TH1 may be provided in the same number as the number of the support members 220 provided in the lens driving apparatus. The number of the first through holes TH1 is eight, but it is natural that the number of the first through holes TH1 can be changed as the number of the supporting members 220 is changed.

The upper end of the support member 220 inserted into the first through hole TH1 and the upper elastic member 150 may be soldered to each other. That is, the support member 220 can be coupled to the upper surface of the upper elastic member 150 through the first through hole TH1 by soldering.

4, the lens driving device may include a first soldering part SD1 (not shown) for coupling the support member 220 and the upper elastic member 150 to the upper surface of the support member 220, May be provided.

The first soldering portion SD1 is a portion where the upper elastic member 150 and the support member 220 are soldered. In FIGS. 3 to 5, the first soldering portion SD1 is shown as a cylindrical columnar shape, but this is merely an example, and it is of course possible to have various shapes.

The diameter D1 of the first through hole TH1 may be larger than the diameter of the support member 220. [ This is to allow elastic deformation at the portion where the support member 220 is inserted into the first through hole TH1.

The diameter D1 of the first through hole TH1 is set such that the support member 220 can be elastically deformed in the xy plane without being disturbed when the camera shake correction function is performed, The solder may not be excessively introduced into the first through hole TH1 when forming the part SD1, and the like.

The supporting member 220 can be elastically deformed in the section inserted into the first through hole TH1 from the upper surface of the upper elastic member 150 to the lower surface of the upper elastic member 150 . Of course, the section from the upper surface of the upper elastic member 150 to the lower surface of the upper elastic member 150 may mean a thickness measured in the first direction of the upper elastic member 150.

That is, since the solder portion of the support member 220 soldered by the first soldering portion SD1 is not elastically deformed or the elastic deformation is remarkably suppressed, when the lens driving device performs the camera shake correction function, the support member 220 Is elastically deformed from the lower end of the first soldering portion SD1 formed on the upper surface of the upper elastic member 150. [

As a result, the resiliently deformed section of the support member 220 can be increased by the thickness of the upper elastic member 150 in the first direction.

6 is a perspective view for explaining the structure of the circuit member 231 and the printed circuit board 250 in the lens driving apparatus according to the embodiment. 7 is a cross-sectional view showing the portion A2 in Fig. 8A is an enlarged view showing a portion A3 in FIG.

As shown in FIG. 7, the lower end of the support member 220 may be coupled to the printed circuit board 250. For example, the lower end of the support member 220 may be soldered to the printed circuit board 250.

6, the circuit member 231 is formed with a second through hole TH2 through which the supporting member 220 is inserted, and the printed circuit board 250 is connected to the second through hole TH2 A third through hole TH3 into which the support member 220 is inserted may be formed at a position corresponding to the second through hole TH3.

Since the support member 220 is provided in the first direction, the first through hole TH1, the second through hole TH2, and the third through hole TH3 are formed at positions corresponding to each other in the first direction They may be provided in the same number.

The number of the second through holes TH2 and the number of the third through holes TH3 are also eight. However, as the number of the support members 220 varies, Of course, can be changed.

The lower end of the support member 220 may be coupled to the printed circuit board 250 through the circuit member 231. Accordingly, the lower end of the support member 220 is inserted into the second through hole TH2 and the third through hole TH3, and can be coupled to the printed circuit board by soldering. That is, the support member 220 passes through the second through hole TH2 and the third through hole TH3, and can be coupled to the lower surface of the printed circuit board by soldering.

7, the lens driving device may include a second soldering portion (not shown) coupled to the lower surface of the printed circuit board 250, and the support member 220 and the printed circuit board 250 are coupled to each other, SD2 may be provided.

2A and 3, the supporting member 220 may be coupled to the lower surface of the printed circuit board 250 so as to correspond to the position of the supporting member 220 of the base 210 Recessed grooves may be formed in the corner portions.

The second soldering portion SD2 is a portion where the printed circuit board 250 and the supporting member 220 are soldered. In FIGS. 7 and 8A, the second soldering portion SD2 is shown as a cylindrical columnar shape, but this is merely an embodiment, and it is of course possible to have various shapes.

The diameter D3 of the second through hole TH2 and the third through hole TH3 may be larger than the diameter of the support member 220. [ This is to allow elastic deformation at the portion where the support member 220 is inserted into the second through hole TH2 and the third through hole TH3.

The diameter D2 of the second through hole TH2 may be larger than the diameter D3 of the third through hole TH3. This is because the width of the elastic deformation of the support member 220 on the x-y plane is larger in the second through hole TH2 than the third light passage hole.

The diameter D3 of the third through hole TH3 is set such that the support member 220 can be elastically deformed on the xy plane without being disturbed when the camera shake correcting function is performed and the second soldering portion SD2 , The solder may not be excessively introduced into the third through hole TH3, and the like.

Therefore, the diameter D3 of the third through hole TH3 may be, for example, 0.15 mm to 0.25 mm.

The diameter D2 of the second through hole TH2 may be greater than the third through hole TH3 and the structure of the circuit member 231 in which the second through hole TH2 is formed, It can be selected appropriately. Therefore, the diameter D2 of the second through hole TH2 may be, for example, 0.3 mm to 0.4 mm.

Therefore, when the support member 220 is engaged with the printed circuit board 250, the support member 220 is inserted into the third through hole TH3, that is, the upper surface of the printed circuit board 250 To the lower surface of the printed circuit board 250.

In this case, a section from the upper surface of the printed circuit board 250 to the lower surface of the printed circuit board 250 may mean a thickness measured in the first direction of the printed circuit board 250. The thickness of the printed circuit board 250 measured in the first direction may be, for example, 0.1 mm to 0.2 mm.

That is, since the soldered portion of the support member 220 by the second soldering portion SD2 is not elastically deformed or the elastic deformation is remarkably suppressed, when the lens driving device performs the shake correction function, the support member 220 Is possible from the upper end of the second soldering portion SD2 formed on the lower surface of the printed circuit board 250. [

The elastic deformation section of the support member 220 can be increased by the thickness of the printed circuit board 250 in the first direction.

Therefore, in order for the support member 220 to perform the image stabilization function, the elastic deformation section may be a section between the first soldering section SD1 and the second soldering section SD2. 7, the support member 220 may be configured to perform an image stabilization function in the first section H between the upper surface of the upper elastic member 150 and the lower surface of the printed circuit board 250 Elastic deformation is possible.

In the embodiment, the overall length of the lens driving device in the first direction can be reduced by increasing the length of the elastically deformable portion of the support member 220 in the first direction, that is, the elastic deformation section.

7, when the thickness of the upper elastic member 150 is measured in the first direction and the thickness of the printed circuit board 250 is measured in the first direction, The elastic deformation section can be extended.

In other words, in the embodiment, the length of the lens driving device in the first direction is reduced by the sum of the thickness measured in the first direction of the upper elastic member 150 and the thickness measured in the first direction of the printed circuit board 250 . Therefore, the entire lens driving apparatus can be manufactured with a slim structure.

Meanwhile, as the elastic deformation section increases, the angle at which the support member 220 is tilted with respect to the first direction, that is, the tilt angle may be reduced when the camera shake correction function is performed.

As the tilt angle is reduced, deterioration in image quality due to excessive tilting of the bobbin in the first direction can be suppressed when the shake correction function is performed.

8B is a view for explaining an electrical connection structure between the circuit member 231 and the printed circuit board 250. As shown in FIG. 8B shows a lens driving apparatus in which four supporting members 220 are provided for clarity and one supporting member 220 is provided at each corner of the printed circuit board 250. FIG.

The lens driving device may further include a first connection part 400 and a second connection part 510. [ The first connection part 400 may electrically connect the printed circuit board 250 and the circuit member 231 to each other. The second connection unit 510 may electrically connect the printed circuit board 250 and the support member 220 to each other.

The first connection part 400 and the second connection part 510 may be disposed at the corners of the printed circuit board 250, the circuit member 231 and the support member 220.

At this time, the first connection unit 400 may be disposed on both sides of the first connection unit 400, as shown in FIG. 8B. In this embodiment, the number of the first connection units 400 may be eight, and the number of the second connection units 510 may be four.

In another embodiment, the first connection part 400 may be disposed only on one side of the first connection part 400. In this embodiment, the number of the first connection units 400 may be four, and the number of the second connection units 510 may be four.

In another embodiment, it may be disposed on both sides of the first connection part 400. 3, when the support members 220 are provided in pairs at the corners of the printed circuit board 250, the second connection unit 510 may include eight have. In this embodiment, the first connection part 400 and the second connection part 510 may be provided in eight, respectively.

In another embodiment, the first connection part 400 may be disposed only on one side of the first connection part 400. [ At this time, the second connection part 510 may be provided with a total of eight when the support members 220 are provided at each corner of the printed circuit board 250. In this embodiment, the number of the first connection units 400 may be four, and the number of the second connection units 510 may be eight.

The first connection part 400 may include a first terminal 410 and a second terminal 420. The first terminal 410 is provided on the printed circuit board 250 in a C or semicircular shape and the second terminal 420 is connected to the lower surface of the circuit member 231 by the first terminal 410 As shown in Fig.

The second connection part 510 is provided as a terminal on the lower surface of the printed circuit board 250 and may be electrically connected to each other by the support member 220 and the second soldering part SD2.

8B, the first terminal 410 surrounds at least a part of the top, bottom and side surfaces of the printed circuit board 250, and the second terminal 420 is connected to the circuit And may be provided on the lower surface of the member 231 at a predetermined distance from the side surface of the circuit member 231.

At this time, the first terminal 410 and the second terminal 420 are disposed to face each other in the first direction and are directly contacted with each other, or may be electrically connected to each other by soldering, conductive film, conductive adhesive, have.

Accordingly, the first terminal 410 and the second terminal 420 need to be disposed at positions facing each other in the first direction. The surface area of the printed circuit board 250 is formed to be smaller than the surface area of the circuit member 231 so that the first terminal 410 and the second terminal 420 are in contact with or joined to each other, .

9 is a perspective view illustrating a portable device according to an embodiment. 10 is a configuration diagram of the portable device shown in Fig.

9 and 10, a portable device 200A (hereinafter referred to as a "device") includes a body 850, a wireless communication unit 710, an A / V input unit 720, a sensing unit 740, 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. 9 is of a bar shape, but is not limited thereto. The body 850 may be a slide type, a folder type, a swing type , A swivel type, and the like.

The body 850 may include a case (casing, housing, cover, etc.) which forms an appearance. For example, the body 850 can be divided into a front case 851 and a rear case 852. Various electronic components of the device can be embedded in the space formed between the front case 851 and the rear case 852. [

The wireless communication unit 710 may be configured to include one or more modules that enable wireless communication between the device 200A and the wireless communication system or between the device 200A and a network in which the device 200A is located. For example, the wireless communication unit 710 may include a broadcast receiving module 711, a mobile communication module 712, a wireless Internet module 713, a short distance communication module 714, and a location information module 715 have.

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

The camera 721 may be a camera including a lens driving device according to the embodiment shown in FIG. 2A.

The sensing unit 740 senses the current state of the device 200A such as the open / closed state of the device 200A, the position of the device 200A, the presence of the user, the orientation of the device 200A, And generate a sensing signal for controlling the operation of the device 200A. For example, when the device 200A is in the form of a slide phone, it is possible to sense whether the slide phone is opened or closed. In addition, it is responsible for a sensing function related to the power supply of the power supply unit 790, whether the interface unit 770 is connected to an external device, and the like.

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

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

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

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

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

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

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

The controller 780 may control the overall operation of the device 200A. For example, the control unit 780 may perform related control and processing for voice call, data communication, video call, and the like. The control unit 780 may include the panel control unit 144 of the touch screen panel driving unit shown in FIG. 1 or may perform the function of the panel control unit 144.

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

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

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

While only a few have been described above with respect to the embodiments, various other forms of implementation are possible. The technical contents of the embodiments described above may be combined in various forms other than the mutually incompatible technologies, and may be implemented in a new embodiment through the same.

110: Bobbin
120: first coil
130: first magnet
140: housing
150: upper elastic member
160: Lower elastic member
210: Base
220: Support member
230: second coil
231: Circuit member
250: printed circuit board
400: first connection portion
410: first terminal
420: second terminal
510: second connection portion

Claims (24)

A bobbin installed to move in a first direction;
A first coil installed on an outer circumferential surface of the bobbin;
A housing having the bobbin installed therein;
A first magnet coupled to the housing;
An upper elastic member provided on the bobbin and coupled to the bobbin and the housing;
A circuit member including a second coil arranged to face the first magnet;
A printed circuit board disposed below the circuit member and electrically connected to the circuit member;
A base disposed below the printed circuit board; And
A support member disposed in a corner portion of the housing for supporting the housing,
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Wherein the support member comprises:
Wherein an upper end portion is engaged with the upper elastic member, and a lower end portion is engaged with the printed circuit board. The method according to claim 1,
Wherein the support member comprises:
And the upper end portion is soldered to the upper elastic member and the lower end portion is coupled to the printed circuit board by soldering. 3. The method of claim 2,
The upper elastic member
Wherein a first through hole into which the support member is inserted is formed. The method of claim 3,
And the diameter of the first through hole is larger than the diameter of the support member. The method of claim 3,
Wherein the circuit member is formed with a second through hole into which the supporting member is inserted,
Wherein the printed circuit board has a third through hole into which the supporting member is inserted at a position corresponding to the second through hole. 6. The method of claim 5,
Wherein the diameter of the second through hole and the diameter of the third through hole are larger than the diameter of the support member. 6. The method of claim 5,
And the diameter of the second through-hole is larger than the diameter of the third through-hole. 6. The method of claim 5,
And the diameter of the second through hole is 0.3 mm to 0.4 mm. 6. The method of claim 5,
And the third through-hole has a diameter of 0.15 mm to 0.25 mm. 6. The method of claim 5,
And the support member passes through the first through hole and is engaged with the upper surface of the upper elastic member. 6. The method of claim 5,
Wherein the supporting member passes through the second through hole and the third through hole and is coupled to a lower surface of the printed circuit board. The method according to claim 1,
A first connection part electrically connecting the printed circuit board and the circuit member to each other; And
And a second connection portion electrically connecting the printed circuit board and the support member to each other,
Further comprising: 13. The method of claim 12,
Wherein the first connection portion and the second connection portion are disposed at corner portions of the printed circuit board, the circuit member, and the support member,
The first connection part
And the second connection portion is disposed on one side or both sides of the first connection portion. 13. The method of claim 12,
The first connection part
A first terminal provided on the printed circuit board in a "C" shape or a semicircular shape; And
And a second terminal disposed on the circuit member at a position corresponding to the first terminal,
And the lens driving device. 15. The method of claim 14,
Wherein the first terminal is provided so as to surround at least a part of the upper surface, the lower surface and the side surface of the printed circuit board, the second terminal is provided at a lower surface of the circuit member,
Wherein a surface area of the printed circuit board is formed to be smaller than a surface area of the circuit member such that the first terminal and the second terminal come into contact with or join with each other. 13. The method of claim 12,
Wherein the first connecting portion is four, and the second connecting portion is four or eight. 13. The method of claim 12,
Wherein the number of the first connecting portions is eight, and the number of the second connecting portions is four or eight. The method according to claim 1,
Wherein the support member comprises:
Wherein the elastic member is elastically deformable in a first section between an upper surface of the upper elastic member and a lower surface of the printed circuit board. The method according to claim 1,
Wherein the printed circuit board includes:
Wherein the thickness measured in the first direction is 0.1 mm to 0.2 mm. 12. The method of claim 11,
Wherein recesses are formed in corner portions of the base so that the support member engages with a lower surface of the printed circuit board. The method according to claim 1,
And a lower elastic member provided below the bobbin and coupled to the bobbin and the housing. A bobbin installed to move in a first direction;
A first coil installed on an outer circumferential surface of the bobbin;
A housing having the bobbin installed therein;
A first magnet coupled to the housing;
An upper elastic member provided on the bobbin and coupled to the bobbin and the housing;
A circuit member including a second coil arranged to face the first magnet;
A printed circuit board disposed below the circuit member and electrically connected to the circuit member;
A base disposed below the printed circuit board; And
A support member disposed in a corner portion of the housing for supporting the housing,
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Wherein the support member comprises:
Wherein the upper end portion is engaged with the upper elastic member and the lower end portion is engaged with the printed circuit board and elastically deformable in a first section between the upper surface of the upper elastic member and the lower surface of the printed circuit board. The lens driving device according to any one of claims 1 to 22, And
And an image sensor mounted on the lens driving device. A display module including a plurality of pixels whose color changes by an electrical signal;
The camera module according to claim 23, wherein the camera module converts the image inputted through the lens into an electrical signal; And
A controller for controlling operations of the display module and the camera module,
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