KR20190063584A - A lens moving unit, and camera module and optical instrument including the same - Google Patents

Abstract

According to an embodiment of the present invention, provided is a lens driving apparatus, which comprises: a housing; an upper bobbin disposed within the housing; a lower bobbin disposed within the housing and positioned below the upper bobbin; a coil disposed between the upper bobbin and the lower bobbin; a magnet disposed in the housing; an upper elastic member coupled to the upper bobbin; and a lower elastic member coupled to the lower bobbin. The upper bobbin includes a first outer protrusion unit protruding from the lower surface, and the lower bobbin includes a second outer protrusion unit protruding from the upper surface. The coil is disposed between the lower surface of the upper bobbin and the upper surface of the lower bobbin, wherein a portion of the coil is disposed within the first outer protrusion unit and the second outer protrusion unit.

Description

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

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

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

In the case of a camera module mounted on a small electronic device such as a smart phone, the camera module may be frequently hit during use, and the camera module may be slightly shaken due to user's hand motion during shooting. In view of this, in recent years, a technique has been developed to additionally provide the camera shake preventing means to the camera module.

An embodiment provides a lens driving apparatus capable of mounting a lens of a large diameter, a camera module including the lens driving apparatus, and an optical apparatus.

A lens driving apparatus according to an embodiment includes a housing; An upper bobbin disposed within the housing; A lower bobbin disposed within the housing and positioned below the upper bobbin; A coil disposed between the upper bobbin and the lower bobbin; A magnet disposed in the housing; An upper elastic member coupled to the upper bobbin; And a lower elastic member coupled to the lower bobbin, wherein the upper bobbin includes a first outer protrusion protruding from the lower surface, the lower bobbin includes a second outer protrusion protruding from the upper surface, The lower bobbin and the upper surface of the lower bobbin, and a part of the coil is disposed in the first outer projection and the second outer projection.

Wherein the first outer protrusion is disposed at a corner of the upper bobbin and the second outer protrusion is disposed at a corner of the lower bobbin and the first outer protrusion and the second outer protrusion are arranged to face each other .

Wherein the upper bobbin includes a first inner protrusion spaced from the first outer protrusion and the lower bobbin includes a second inner protrusion spaced apart from the second outer protrusion, And the first inner protruding portion, and another portion of the coil may be positioned between the second inner protruding portion and the second inner protruding portion.

The first inner protruding portion may be located inside the first outer protruding portion and the second inner protruding portion may be located inside the second outer protruding portion.

Wherein the first inner protruding portion and the second inner protruding portion correspond to or oppose each other in the direction of the optical axis, the lower surface of the first inner protruding portion contacts the upper surface of the second inner protruding portion, And may be spaced apart from the upper surface of the outer projection.

The protruding length of the second inner protruding portion in the optical axis direction may be greater than the length of the second outer protruding portion in the optical axis direction.

Wherein the first inner protrusion is spaced from the edge of the lower surface of the upper bobbin and the edge of the upper bobbin is a corner where the lower surface of the upper bobbin meets the outer surface of the upper bobbin, And an edge of the upper surface of the lower bobbin may be an edge where the upper surface of the lower bobbin meets the outer surface of the lower bobbin.

Wherein the upper bobbin includes a first opening, the lower bobbin includes a second opening corresponding to the first opening, and an inner surface of the first inner protruding portion has a curved surface having a curvature equal to a curvature of the first opening, And the inner surface of the second inner protruding portion may be a curved surface having a curvature equal to the curvature of the second opening.

The first inner protrusion and the first inner protrusion may be disposed at each of the four corners of the upper bobbin and the second outer protrusion and the second inner protrusion may be disposed at each of the four corners of the lower bobbin have.

Wherein the lens driving apparatus includes a first seating groove provided in one of the first inner protrusions disposed at four corners of the upper bobbin and a second inner seating protrusion disposed at four corners of the lower bobbin, A sensing magnet disposed in a second seating groove provided in the first housing; A second inner protrusion disposed at one of four corners of the upper bobbin and a second inner protrusion formed at one of the four inner corners of the upper bobbin, 4 balancing magnet placed in the seating groove; And a position sensor disposed in the housing corresponding to the sensing magnet.

The embodiment can have a thin thickness and a large diameter, and can reduce or suppress the spatial interference between the position sensor and the bobbin in the form of a driver IC having a large size.

1 is a perspective view of a lens driving apparatus according to an embodiment.
2 is an exploded view of the lens driving apparatus of FIG.
Fig. 3 shows a coupling diagram of the lens driving device except for the cover member.
4 is an exploded view of the bobbin and the coil.
5 is a bottom view of the upper bobbin shown in Fig.
6 is a bottom view of the lower bobbin shown in Fig.
7 is a perspective view of a coil coupled to the upper bobbin and the lower bobbin.
8 is a perspective view of a coil coupled to the upper bobbin and the lower bobbin.
9 shows a perspective view of the housing.
Figure 10 shows magnets disposed in the housing.
11 shows magnets, a position sensor, and a circuit board disposed in the housing.
12 shows a base, a circuit board, a position sensor, and a lower elastic member.
13 is a sectional view of the lens driving device in the AB direction shown in Fig.
14 is a cross-sectional view of the lens driving device in the CB direction shown in Fig.
Fig. 15 shows a cross-sectional view of a lens driving apparatus including an integral bobbin disposed in a housing and an AF coil disposed in a bobbin.
16A is a perspective view of a bobbin according to another embodiment.
16B is a perspective view of the bobbin and the coil shown in Fig. 16A.
17 is an exploded perspective view of the camera module according to the embodiment.
18 is a perspective view of a portable terminal according to an embodiment.
Fig. 19 shows a configuration diagram of the portable terminal shown in Fig.

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

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

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

It is also to be understood that the terms "comprises", "comprising", or "having" as used herein are meant to imply that a component can be implied unless specifically stated to the contrary, But should be construed to include other elements. Also, the terms "corresponding" and the like described herein may include at least one of the terms "opposite" or "overlapping ".

For convenience of explanation, the lens driving apparatus according to the embodiment is described using the Cartesian coordinate system (x, y, z), but may be described using another coordinate system, and the embodiment is not limited to this. In the drawings, the x- and y-axes indicate directions perpendicular to the z-axis, which is the optical axis direction, and the z-axis direction parallel to the optical axis or optical axis is referred to as a "first direction" Quot ;, and the y-axis direction may be referred to as a " third direction ".

"Autofocusing" refers to focusing the image of the subject automatically on the image sensor surface. The lens driving apparatus according to the embodiment can perform the auto focusing operation in which the optical module composed of at least one lens is moved in the first direction.

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

1 to 3, the lens driving apparatus 100 includes a bobbin 110, a coil 120, a magnet 130, a housing 140, a top elastic member 150, a bottom elastic member 160, And a position sensor 170.

The lens driving apparatus 100 may further include a circuit board 190 electrically connected to the position sensor 170. The lens driving apparatus 100 may further include a cover member 300 and a base 210.

First, the bobbin 110 will be described.

The bobbin 110 may be mounted with a lens or lens barrel, disposed within the housing 140, and movable along the optical axis OA.

The bobbin 110 may have openings 101a, 101b for mounting a lens or lens barrel.

The shape of the opening of the bobbin 110 may be circular, elliptical, or polygonal, but is not limited thereto.

4 is an exploded view of the bobbin 110 and the coil 120. Fig. 5 is a bottom view of the upper bobbin 110-1 shown in Fig. 4, and Fig. 6 is a bottom view of the lower bobbin 110-2 7 is a perspective view of the coil 120 coupled to the upper bobbin 110-1 and the lower bobbin 110-2 and FIG. 8 is a perspective view of the upper bobbin 110-1 and the lower bobbin 110-2 (Not shown).

4 to 8, the bobbin 110 may include an upper bobbin 110-1 and a lower bobbin 110-2 disposed below the upper bobbin 110-1.

The upper bobbin 110 may be represented as an "upper portion", a "top portion", a "first bobbin" or a "first member" and the lower bobbin 110 may be represented as a "lower portion" Quot; second bobbin "or" second member ".

The upper bobbin 110-1 may be positioned on the upper side of the coil 120 and the lower bobbin 110-2 may be positioned on the lower side of the coil 120 and the coil 120 may be positioned on the upper bobbin 110- 1 and the lower bobbin 110-2 and may be disposed and fixed to the upper bobbin 110-1 and the lower bobbin 110-2.

Referring to FIG. 4, the upper bobbin 110-1 may include side portions 10a to 10d and corner portions 11a to 11d. Each of the corner portions 11a to 11d of the upper bobbin 110-1 may be positioned between two adjacent side portions 10a and 10b, 10b and 10c, 10c and 10d, 10d and 10a.

 The lower bobbin 110-2 may include the side portions 20a to 20d and the corner portions 21a to 21d. Each of the corner portions 21a to 21d of the lower bobbin 110-2 may be positioned between two adjacent side portions 20a and 20b, 20b and 20c, 20c and 20d, 20d and 20a.

The side portions 10a to 10d of the upper bobbin 110-1 may be corresponding to, opposing to, or aligned with the side portions 20a to 20d of the lower bobbin 110-2 in the direction of the optical axis OA.

The side portions 10a to 10d of the upper bobbin 110-1 and the side portions 20a to 20d of the lower bobbin 110-2 are perpendicular to the optical axis and extend in the direction parallel to the straight line passing through the optical axis, Or opposite to each other.

The corner portions 11a to 11d of the upper bobbin 110-1 may be corresponding to, opposing to, or aligned with the corner portions 21a to 21d of the lower bobbin 110-2 in the optical axis OA direction.

The upper bobbin 110-1 may have a first opening 101a (see FIG. 5) for mounting a lens or lens barrel.

The lower bobbin 110-1 may have a second opening 101b (see FIG. 6) for mounting a lens or lens barrel, and the first opening 101a may correspond to the second opening 101b.

For example, the first opening 101a and the second opening 101b may have the same shape and may have the same diameter.

The upper bobbin 110-1 may have at least one first engagement portion 115 disposed on the upper surface and engaged with and fixed to the inner frame 151 of the upper elastic member 150. [

For example, the first coupling portion 115 may be provided on the side portions 10a to 10d of the upper bobbin 110-1 and may be a groove, a projection, or a planar shape, but is not limited thereto.

The upper bobbin 110-1 may have a first escape groove 112a (see FIG. 4) provided in one region of the upper surface corresponding to or aligned with the first frame connecting portion 153 of the upper elastic member 150 . For example, the first escape groove 112a may be provided on the upper surface, the upper surface, or the upper surface of the corner portions 11a to 11d of the upper bobbin 110-1, but is not limited thereto.

The lower bobbin 110-2 may have a second escape groove 112b (see FIG. 6) provided in one area of the lower surface corresponding to or aligned with the second frame connecting portion 163 of the lower elastic member 160 have. The second escapement groove 112b may be provided on the lower surface, the lower surface, or the lower surface of the corner portions 21a to 21d of the lower bobbin 110-2, but is not limited thereto.

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

In another embodiment, the first frame connecting portion and the second frame connecting portion may be designed so that the bobbin and the bobbin do not interfere with each other, so that the first escaping groove and / or the second escaping groove of the bobbin may not be provided.

The upper bobbin 110-1 may include a first protrusion 60a provided at the bottom, bottom, or bottom and a groove 51a provided at the bottom, bottom, or bottom of the first protrusion 60a.

The lower bobbin 110-2 may include a second projection 60b provided on the upper, upper, or upper end, and a groove 51b provided on the upper, upper, or upper end of the second projection 60b.

A portion of the coil 120 may be disposed in the groove 51a and another portion of the coil 120 may be disposed in the groove 51b.

The first projections 60a may be disposed at the corners or corners 11a to 11d of the upper bobbin 110-1 and the second projections 60b may be disposed at the corners or corners of the lower bobbin 110-2 21a to 21d, and the first projecting portion 60a and the second projecting portion 60b can be disposed to face each other or face each other in the optical axis direction.

The first protrusion 60a of the upper bobbin 110-1 may include a third protrusion 61 and a fourth protrusion 63. [

Here, the third projection 61 may be replaced with a "first outer projection" or a "first support", and the fourth projection 63 may be replaced with a "first inner projection" or a "second support" Can be expressed.

For example, each of the third projection 61 and the fourth projection 63 may protrude from the lower surface of the upper bobbin 110 in the optical axis direction (e.g., downward).

For example, the third protrusion 61 and the fourth protrusion 63 may be provided on the lower surface of at least one of the corner portions 11a to 11b of the upper bobbin 110-1.

For example, the upper bobbin 110-1 may include four first protrusions disposed at four corners of the lower surface of the upper bobbin 110-1.

For example, the upper bobbin 110-1 may protrude from the lower surface of each of the corner portions 11a to 11b, and may have a third projection 61 and a fourth projection 63 corresponding to each other.

For example, the upper bobbin 110-1 may have one third protrusion 61 and one fourth protrusion 63 at each corner.

The third protrusion 61 and the fourth protrusion 63 may be disposed apart from each other and the fourth protrusion 63 may be disposed inside the third protrusion 61.

For example, the distance from the center of the first opening 101a to the fourth projection 63 may be smaller than the distance from the center of the first opening 101a to the third projection 61.

For example, the third projecting portion 61 may be disposed at the outermost portion of the lower surface of the corner portions 11a to 11d of the upper bobbin 110-1, and the fourth projecting portion 63 may be in contact with the first opening 101a Or connected.

A groove 51a or a gap may be provided between the third projection 61 and the fourth projection 63 so that at least a part of the coil 120 is inserted or seated.

For example, the first side face 63a of the fourth projection 63 and the first side face 61a of the third projection 61 may face each other and the first side face 63a of the fourth projection 63 Grooves 51a or gaps may be provided between the first side surfaces 61a of the third projections 61. [

The area (or the length in the transverse direction) of the first side surface 63a of the fourth protrusion 63 may be equal to or smaller than the area (or the length in the transverse direction) of the first side surface 61a of the third protrusion 61 However, the present invention is not limited thereto. The area (or the length in the transverse direction) of the first side surface 63a of the fourth protrusion 63 is greater than the area (or the length in the transverse direction) of the first side surface 61a of the third protrusion 61 It may be big.

Each of the first side surface 63a of the fourth protrusion 63 and the first side surface 61a of the third protrusion 61 may be planar to stably support or fix the coil 120. However, the present invention is not limited thereto. In another embodiment, each of the first side surface 63a of the fourth protrusion 63 and the first side surface 61a of the third protrusion 61 may be curved.

The second side 63b of the fourth projection 63 may be the inner side of the fourth projection 63 and may be curved. The second side surface 63b of the fourth projection 63 may be a side surface located on the opposite side of the first side surface 63a.

For example, the second side surface 63b or the inner surface of the fourth projection 63 may have a curved surface having the same curvature as the curvature of the first opening 101a. This is for stably supporting a lens or lens barrel arranged or inserted in the first opening 101a.

For example, the area of the lower surface of the fourth protrusion 63 may be larger than the area of the lower surface of the third protrusion 61. The space for providing the seating grooves 71a and 71b for arranging or mounting the sensing magnet 180 and the balancing magnet 185 can be secured in the fourth protrusion 63. [

For example, the distance between the first side surface 63a of the fourth projection 63 and the second side surface 63b of the fourth projection 63 is the distance from the first side surface 61a of the third projection 61 to the third projection (The side located on the opposite side of the first side surface 61a) of the first side surface 61a.

Referring to FIG. 5, four third protrusions 61 spaced apart from each other and four second protrusions 63 spaced from each other may be disposed on a lower surface of the upper bobbin 110-1.

The fourth projection 63 may be disposed on the lower surface of the corner portions 11a to 11d of the upper bobbin 110-1 and extend or extend to at least one of the two adjacent sides of the corner portions 11a to 11d Can be extended and arranged. This is for expanding the area of the fourth protrusion 63 for supporting the coil 120 so as to stably support or fix the coil 120.

The fourth projection 63 can be spaced apart from the lower edge 58a of the upper bobbin 110-1. For example, the edge 58a may be an edge where the lower surface of the upper bobbin 110-1 meets the outer surface of the upper bobbin 110-1 (e.g., the outer surface of the side portions 10a to 10d).

That is, in one region of the lower surface of the upper bobbin 110-1 located between the edge of the lower surface of the upper bobbin 110-1 and the fourth projection 63, at least a part of the coil 120 is arranged A seating portion 59a may be provided.

For example, the seating portion 59a is located between the edge of the lower surface of the upper bobbin 110-1 and the first opening 101a, and the upper bobbin 110- 1 < / RTI >

The upper bobbin 110-1 may have a seating groove 71a through which a part of the sensing magnet 180 is disposed or inserted into any one of the fourth projections 63. [

The upper bobbin 110-1 may be provided with a seating groove 71b for placing or inserting a part of the balancing magnet 185 in any one of the fourth projections 63. [ For example, the seating groove 71a and the seating groove 71b may be provided in two diagonally opposite fourth protrusions, but the present invention is not limited thereto.

The second protrusion 60b of the lower bobbin 110-2 may include a fifth protrusion 62 and a sixth protrusion 64. Here, the fifth protrusion 62 may be replaced with a "second outside protrusion" or a "third support", and the sixth protrusion 64 may be replaced with a "second inside protrusion" or a "fourth support" Can be expressed.

For example, the fifth protrusion 62 and the sixth protrusion 64 may protrude from the upper surface of the lower bobbin 110 in the optical axis direction (e.g., upward direction).

For example, the fifth protrusion 62 and the sixth protrusion 64 may be provided on the lower surface of at least one of the corner portions 21a through 21b of the lower bobbin 110-2.

The lower bobbin 110-2 may include four second protrusions disposed at four corners of the upper surface of the lower bobbin 110-2.

For example, the lower bobbin 110-2 may project from the upper surface of each of the corner portions 21a to 21b, and may have a fifth projection 62 and a sixth projection 64 corresponding to each other.

The third projection 61 of the upper bobbin 110-1 and the fifth projection 62 of the lower bobbin 110-2 may be opposed to or opposed to each other in the direction of the optical axis, The fourth projecting portions 64 and the sixth projecting portions 64 of the lower bobbin 110-2 can correspond or act on each other in the optical axis direction.

For example, the lower bobbin 110-2 may have one fifth protrusion 62 and one sixth protrusion 64 at each corner.

The fifth protrusion 62 and the sixth protrusion 64 may be disposed apart from each other and the sixth protrusion 64 may be disposed inside the fifth protrusion 62.

For example, the distance from the center of the second opening 101b to the sixth projection 64 may be smaller than the distance from the center of the second opening 101b to the fifth projection 62.

For example, the fifth projecting portion 62 may be disposed at the outermost portion of the upper surface of the corner portions 21a to 21d of the lower bobbin 110-2, and the sixth projecting portion 64 may be in contact with the second opening 102a Or connected.

Between the fifth protrusion 62 and the sixth protrusion 64, a groove 51b or a gap for inserting or seating at least another portion of the coil 120 may be provided. The grooves 51b of the lower bobbin 110-2 may correspond to or align with the grooves 51a of the upper bobbin 110-1 in the optical axis direction.

For example, the first side surface 64a of the sixth projection 64 and the first side surface 62a of the fifth projection 62 may face each other and the first side surface 63a of the sixth projection 64 A groove 51b or a gap may be provided between the first side surfaces 62a of the fifth projection 62.

Each of the first side surface 64a of the sixth projection 64 and the first side surface 62a of the fifth projection 62 may be planar to stably support or fix the coil 120. However, the present invention is not limited thereto. In other embodiments, each of the first side surface 64a of the sixth projection 64 and the first side surface 62a of the fifth projection 62 may be curved.

The second side 64b of the sixth projection 64 may be the inner side of the sixth projection 64 and may be curved. The second side 64b may be a side opposite the first side 64a.

For example, the second side 64b of the sixth projection 64 may have a curved surface having the same curvature as the curvature of the second opening 101b. This is to stably support the lens barrel or the lens barrel disposed or inserted into the second opening 101b.

For example, the area of the upper surface of the sixth protrusion 64 may be larger than the area of the lower surface of the fifth protrusion 62. The sixth protrusion 64 can secure a space for providing the seating grooves 56a and 56b for disposing or mounting the sensing magnet 810 and the balancing magnet 185. [

For example, the distance between the first side surface 64a of the sixth projection 64 and the second side surface 64b of the sixth projection 64 is the distance from the first side surface 62a of the fifth projection 62 to the fifth projection (The side located on the opposite side of the first side face 62a) of the first side face 62a.

Four fifth protrusions 62 spaced apart from each other and four fifth protrusions 64 spaced from each other may be disposed on the upper surface of the lower bobbin 110-2.

The sixth projection 64 may be disposed on the upper surface of the corner portions 21a to 21d of the lower bobbin 110-2 and extend or extend to at least one of two adjacent sides of the corner portions 21a to 21d Can be extended and arranged. This is for expanding the area of the sixth protrusion 64 for supporting the coil 120 so as to stably support or fix the coil 120.

The sixth projection 64 may be spaced from the edge 58b of the upper surface of the lower bobbin 110-2. For example, the edge 58b may be an edge where the upper surface of the lower bobbin 110-2 and the outer surface of the lower bobbin 110-2 (e.g., the outer surface of the side portions 20a to 20d) meet.

At least a part of the coil 120 is arranged or arranged in one area of the upper surface of the lower bobbin 110-2 positioned between the edge 58b and the sixth projection 64 of the upper surface of the lower bobbin 110-2. And a seat portion 59b for seating can be provided.

The seating portion 59b of the lower bobbin 110-2 may be aligned with, facing, or aligned with the seating portion 59a of the upper bobbin 110-1 in the direction of the optical axis.

For example, the seating portion 59b is located between the edge of the upper surface of the lower bobbin 110-2 and the second opening 101b, and the lower bobbin 110- Lt; RTI ID = 0.0 > 1). ≪ / RTI >

The lower bobbin 110-2 may have a seating groove 56a through which the other part of the sensing magnet 180 is placed or inserted into any one of the sixth projections 64. [

The lower bobbin 110-2 may be provided with a seating groove 56b for allowing another portion of the balancing magnet 185 to be placed or inserted into any one of the sixth protrusions 64. [ For example, the seating groove 56a and the seating groove 56b may be provided in two diagonally opposed sixth protrusions, but are not limited thereto.

The seating groove 71a of the upper bobbin 110-1 and the seating groove 56a of the lower bobbin 110-2 may be aligned, facing or aligned with each other in the optical axis direction. The seating groove 71b of the upper bobbin 110-1 and the seating groove 56b of the lower bobbin 110-2 may be aligned, facing, or aligned with each other in the optical axis direction.

The lower surface of the fourth protrusion 63 of the upper bobbin 110-1 can be in contact with the upper surface of the sixth protrusion 64 of the lower bobbin 110-2, The protrusion 64 can support the fourth protrusion 63 of the upper bobbin 110-1.

For example, the lower surface of the fourth protrusion 63 of the upper bobbin 110-1 and the upper surface of the sixth protrusion 64 of the lower bobbin 110-2 may have a shape corresponding to each other, but the present invention is not limited thereto .

The lower surface of the third protrusion 61 of the upper bobbin 110-1 may be spaced from the upper surface of the fifth protrusion 62 of the lower bobbin 110-2, , A part of the coil 120 may be exposed through the empty space.

For example, the projecting length of the sixth projection 64 in the optical axis direction may be larger than the length of the fifth projection 62 in the optical axis direction. This is to prevent the coil 120 from moving to the inside of the lower bobbin 110-2 and to stably support the coil 120. [ In another embodiment, the protruding length of the sixth protrusion 64 in the optical axis direction may be equal to or smaller than the length of the fifth protrusion 62 in the optical axis direction.

The protrusion length of the fourth protrusion 63 in the optical axis direction may be smaller than the length of the third protrusion 61 in the optical axis direction, but is not limited thereto. In another embodiment, the protruding length of the fourth protrusion 63 in the optical axis direction may be greater than or equal to the length of the third protrusion 61 in the optical axis direction.

Next, the coil 120 will be described.

7 and 8, the coil 120 can be inserted, placed, or seated in the groove 51a of the upper bobbin 110-1 and the groove 51b of the lower bobbin 110-2.

For example, the upper or upper portion of the coil 120 may be inserted, placed, or seated in the groove 51a of the upper bobbin 110-1 and the lower or lower portion of the coil 120 may be inserted into the lower bobbin 110-2 Or grooved in the grooves 51b of the base plate 51a.

For example, the coil 120 may include a first portion 30a corresponding to the side portions 10a to 10d of the upper bobbin 110-1 and / or the side portions 20a to 20d of the lower bobbin 110-2, And a second portion 30b corresponding to the corner portions 11a to 11d of the upper bobbin 110-1 and / or the corner portions 21a to 21d of the lower bobbin 110-2.

The first portion 30a of the coil 120 may be placed or seated on the seating portion 59a of the upper bobbin 110-1 and the seating portion 59b of the lower bobbin 110-2.

The top or top of the first portion 30a of the coil 120 may be placed or seated in the seating portion 59a of the top bobbin 110-1 and the first portion 30a of the coil 120 Or the lower end of the lower bobbin 110-2 may be disposed or seated on the seating portion 59b of the lower bobbin 110-2.

The second portion 30b of the coil 120 may be inserted, placed or seated in the groove 51a of the upper bobbin 110-1 and the groove 51b of the lower bobbin 110-2.

The top or top of the second portion 30b of the coil 120 may be inserted, positioned or seated in the groove 51a of the top bobbin 110-1 and the second portion 30b of the coil 120 30b may be inserted, disposed, or seated in the groove 51b of the lower bobbin 110-2.

An opening 55 (see Fig. 7) may be provided between the side portions 10a to 10d of the upper bobbin 110-1 and the corresponding side portions 20a to 20d of the lower bobbin 110-2, The first portion 30a of the coil 120 may be exposed through the opening 55 of the first coil 120. The coil 120 and the magnet 130 The intensity of the electromagnetic force can be improved.

The first magnet 130-1 may be disposed on the left side with respect to the opening 55, and the position sensor 170 may be disposed on the right side.

The coil 120 may be a driving coil for electromagnetic interaction with the magnet 130.

A drive signal (e.g., a drive current or voltage) may be applied to the coil 120 to generate an electromagnetic force due to interaction with the magnet 130.

The driving signal applied to the coil 120 may be a direct current signal and / or an alternating current signal.

When the driving signal provided to the coil 120 is an AC signal, the AC signal may be a sinusoidal signal or a pulse signal (e.g., a PWM (Pulse Width Modulation) signal).

The AF moving part can move in the first direction, for example, the upward direction (+ Z direction) or the down direction (-Z direction) by the electromagnetic force caused by the interaction between the coil 120 and the magnet 130.

By controlling the intensity and / or the direction of the electromagnetic force due to the interaction between the coil 120 and the magnet 130 by controlling the intensity and / or the polarity of the drive signal applied to the coil 120 (for example, , It is possible to control the movement of the AF moving part in the first direction, thereby performing the auto focusing function.

The AF moving part may include a bobbin 110 which is resiliently supported by the upper elastic member 150 and the lower elastic member 160 and the structures mounted on the bobbin 110 and moving together with the bobbin 110. For example, the AF moving part may include a bobbin 110, a coil 120, and / or a lens (not shown) mounted on the bobbin 110.

The coil 120 may be electrically connected to at least one of the upper elastic member 150 and the lower elastic member 160 and electrically connected to the circuit board 190 through the upper elastic member 150 or the lower elastic member 160 .

For example, by solder or a conductive adhesive, the coil 120 may be coupled to two of the upper springs of the upper elastic member 150, or to two of the lower springs of the lower elastic member, It is not. In another embodiment, the coil 120 may be coupled to the upper elastic member and the lower elastic member.

For example, the coil 120 disposed on the bobbin 110 at an initial position of the movable part (e.g., the bobbin 110) may overlap with the magnet 130 in a direction perpendicular to the optical axis and parallel to a straight line passing through the optical axis.

Also, for example, at an initial position of the moving part (e.g., bobbin 110), the coil 120 may overlap at least part of the position sensor 170 in a direction perpendicular to the optical axis and parallel to a straight line passing through the optical axis, But is not limited thereto.

Next, the housing 140 will be described.

The housing 140 houses the bobbin 110 on which the coil 120 is disposed.

Fig. 9 shows a perspective view of the housing, Fig. 10 shows the magnets 130-1 to 130-4 arranged in the housing 140, Fig. 11 shows the magnets 130-1 to 130-4 arranged in the housing 140, Fig. 12 shows a base 210, a circuit board 190, a position sensor 170, and a lower elastic member 160, and Fig. 13 is a sectional view of the lens driving apparatus 100 in the AB direction shown in Fig. 3, and Fig. 14 is a sectional view of the lens driving apparatus 100 in the CB direction shown in Fig.

9 to 14, the housing 140 may have a columnar shape having an opening as a whole, and the side portions 141-1 to 141-4 and the corner portions 142-1 to 142-4 ).

Each of the corner portions 142-1 to 142-4 may be disposed or positioned between two adjacent side portions 141-1 to 141-4 and the side portions 141-1 to 141-4 may be disposed between the adjacent two side portions 141-1 to 141-4, Can be connected.

For example, the housing 140 includes a first side 141-1, a second side 141-2, a third side 141-3, a fourth side 141-4, a first side 141-1 A first corner portion 142-1 disposed between the second side portion 141-2 and the second side portion 141-2 and a second corner portion 142-2 disposed between the second side portion 141-2 and the third side portion 141-3 A third corner portion 142-3 disposed between the third side portion 141-3 and the fourth side portion 141-4 and a third corner portion 142-3 disposed between the fourth side portion 141-4 and the first side portion 141-4 And a fourth corner portion 142-4 disposed between the first corner portion 141-1 and the second corner portion 142-2.

The side portions 10a to 10d of the upper bobbin 110-1 and the side portions 20a to 20d of the lower bobbin 110-2 correspond to the side portions 141-1 to 141-4 of the housing 140 And the corner portions 142-1 to 142-4 of the housing 140 are formed in the corner portions 11a to 11d of the upper bobbin 110-1 and the corner portions 21a to 21d of the lower bobbin 110-2, 21d.

At least one of the side portions of the housing 140 may have a magnet seating portion 41a for supporting or receiving the magnet 130.

For example, the magnet seating portion 41a may be provided in each of the side portions 141-1 to 141-4 of the housing 140 and may be in the form of a through hole passing through the side portion of the housing 140, But may be in the form of a groove in other embodiments.

The magnet seating portion 41a may be positioned so as to be closer to any one of the two sides adjacent to either side of the housing 140 where the magnet seating portion 41a is disposed.

In order to balance the weight of the magnets disposed in the housing, the magnet seating portions provided on the two side portions 141-1 and 141-2 adjacent to the first corner portion 142-1 of the housing 140 The magnet mounting bushes 41a provided on the two side portions 141-3 and 141-4 adjacent to the third corner portion 142-3 of the housing 140 and the diaphragm- Or symmetrically with respect to each other.

The housing 140 is provided with a stopper or a support portion 42 provided adjacent to the magnet seating portion 41a to prevent the magnet 130 placed on the magnet seating portion 41a from being detached from the magnet seating portion 41a .

Each of the side portions 141-1 to 141-4 of the housing 140 may be disposed parallel to any one of the side plates of the cover member 300. [

In addition, a stopper 144 may be provided on the upper surface of the housing 140 to prevent direct contact with the inner surface of the cover member 300.

For example, the stopper 144 may be disposed on the upper surface of at least one of the first to fourth corner portions 142-1 to 142-4 of the housing 140, but the present invention is not limited thereto, May be disposed on the upper surface of at least one of them.

The housing 140 includes at least one first projection 143 provided on the upper surface of at least one of the corner portions 142-1 to 142-4 for engagement with the first outer frame 152 of the upper elastic member 150 ).

The housing 140 also includes at least one protrusion (not shown) provided on the lower surface of at least one of the corner portions 142-1 to 142-4 for engagement and fixing with the second outer frame 162 of the lower elastic member 160 147 may be provided.

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

A guide groove 148 facing the groove portion 212 of the base 210 may be provided on a lower or a lower surface of the corner portions 142-1 to 142-4 of the housing 140. [

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

The housing 140 may have a groove 41b provided in one of the side portions 141-1 to 141-4 (e.g., 141-1) to receive the position sensor 170. The groove 41b But may be in the form of a groove in another embodiment, but not limited thereto.

The groove 41b provided in the first side portion 141-1 of the housing 140 can be positioned between the groove 41a provided in the first side portion 141-1 and the fourth corner portion 141-4 .

The housing 140 is provided with an escape groove 160a for avoiding spatial interference with the first frame connection portion 153 of the upper elastic member 150 on the upper, upper, or upper surface of at least one of the side portions 141-1 to 141-4. (14a). For example, the escape groove 14a can serve to easily and smoothly move one end of the first frame connecting portion 153 connected to the first outer frame 152 upwardly or downwardly.

The housing 140 is provided with an escape groove 163 for avoiding spatial interference with the second frame connecting portion 163 of the lower elastic member 160 on the lower, lower, or lower surface of at least one of the side portions 141-1 to 141-4. (14b). For example, the escape groove 14b may serve to facilitate one end of the second frame connecting portion 163 connected to the second outer frame 162 to move upward or downward easily and smoothly.

Next, the magnet 130 will be described.

The magnet 130 is disposed in the housing 140. For example, the magnet 130 may be disposed on at least one of the side portions 141-1 to 141-4 of the housing 140. [

For example, the magnet 130 may include first to fourth magnets 130-1 to 130-4 disposed on the sides of the housing 140, respectively.

For example, the magnet 130 may be inserted into or disposed in the magnet seating portion 141a of the housing 140, and may be fixed to the magnet seating portion 141a of the housing 140 by an adhesive.

The magnet 130 may be disposed in the housing 140 such that the magnet 130 is perpendicular to the optical axis OA and at least partially overlaps the coil 120 in a direction parallel to the straight line passing through the optical axis .

For example, the initial position of the bobbin 110 is the initial position of the AF moving part (e.g., bobbin) in a state in which no power or drive signal and sensing signal are applied to the coil 120, and the upper elastic member 150 and the lower elasticity It may be the position where the AF moving part is placed as the member 160 is elastically deformed only by the weight of the AF moving part.

The initial position of the bobbin 110 is determined such that the gravitational force acts in the direction of the base 210 from the bobbin 110 or vice versa and the gravitational force acts on the base 210 in the bobbin 110 direction Lt; / RTI > The AF moving part may include the bobbin 110 and the structures mounted on the bobbin 110, for example, the coil 120.

In another embodiment, the magnet 130 may be disposed on the outer surface of the side portions 141-1 to 141-4 of the housing 140. [ The magnet 130 may be disposed at the corner portions 142-1 to 142-4 of the housing 140 and the position sensor 170 may be disposed at the side portions 141-1 to 141-4 of the housing 140. [ 141-4.

The shape of the magnet 130 may be a rectangular parallelepiped shape corresponding to the side portions 141-1 to 141-4 of the housing 140, but is not limited thereto.

For example, the plane of each of the magnets 130-1 to 130-4 may be substantially rectangular, or alternatively may be triangular or rhombic.

For example, one end and / or the other end of each of the magnets 130-1 to 130-4 may include a curved surface, E, or an inclined surface, or may include a tapered surface.

In order to balance the magnets 130-1 to 130-4 disposed in the housing 140, the magnets disposed to face each other may be provided with inclined surfaces or tapered surfaces opposite to each other.

A position sensor (not shown) disposed on the first side 141-1 for suppressing or reducing the influence of the magnetic field caused by the first magnet 130-1 disposed on the first side 141-1 of the housing 140 The first magnet 130-1 adjacent to the first magnet 130-1 may be provided with an inclined surface or a tapered surface. For example, the inclined surface or the tapered surface of the first magnet 130-1 may be provided only at one end of the first magnet 130-1 adjacent to the position sensor 170. [

For example, the support portion 42 of the housing 140 may have an inclined surface or a tapered surface corresponding to an inclined surface or a tapered surface provided at one end of the magnets 130-1 to 130-4.

The surface of the magnet 130 facing the coil 120 may be planar or curved and may be formed to correspond or coincide with the curvature of the corresponding surface of the coil 120. [

The magnet 130 may be a single pole magnet magnet disposed such that the first face facing the coil 120 is an N pole and the second face opposite to the first face is an S pole. However, the present invention is not limited thereto, And the S pole may be reversed.

Or in other embodiments the magnet 130 may be a bipolar magnet.

For example, the magnet 130 may be a bipolar magnet divided into two in the direction perpendicular to the optical axis. For example, the magnet 130 may include a first magnet portion, a second magnet portion, and a non-magnetic partition wall disposed between the first and second magnet portions.

For example, the first magnet portion may be located at the upper portion, the second magnet portion may be located at the lower portion, and the first magnet portion and the second magnet portion may be spaced apart from each other, but the present invention is not limited thereto.

The non-magnetic bulkhead may include sections that are substantially non-magnetic and have little polarity, and may be filled with air or non-magnetic materials.

In the embodiment, the number of the magnets 130 is four, but the number of the magnets 130 is not limited to four, and the number of the magnets 130 may be two or more.

For example, the magnets 130-1 to 130-4 may be disposed on opposite sides of the housing 140. Two magnets (e.g., 130-1 and 130-3, 130-2) disposed on two opposing sides 141-1 and 141-3, 141-2 and 141-4 of the housing 140 And 130-4 may not overlap each other in the opposite directions of the two sides, but are not limited thereto. In another embodiment, the two magnets may overlap in the opposite directions of the two sides of the housing.

In the embodiments of FIGS. 10 and 11, the magnets 130-1 to 130-4 are disposed in the housing 140, but the present invention is not limited thereto.

The housing 140 may be omitted and the magnets 130-1 to 130-4 and the position sensor 170 may be disposed on the cover member 300 in another embodiment.

In another embodiment, the housing 140 is not omitted, and the magnets 130-1 to 130-4 and the position sensor 170 may be disposed on the cover member 300. [

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

The sensing magnet 180 may be seated or disposed within the seating groove 71a of the upper bobbin 110-1 and the seating groove 56a of the lower bobbin 110-2.

The balancing magnet 185 may be seated or disposed within the seating groove 71b of the upper bobbin 110-1 and the seating groove 56b of the lower bobbin 110-2.

In another embodiment, the first seating groove may be formed in one of the upper bobbin 110-1 and the lower bobbin 110-2, and the sensing magnet 180 may be disposed in the first seating groove. Also, a second seating groove may be provided in any one of the upper bobbin 110-1 and the lower bobbin 110-2, and the balancing magnet 180 may be disposed in the second seating groove.

A part of one surface of the sensing magnet 180 disposed in the seating grooves 71a and 56a of the upper bobbin 110-1 and the lower bobbin 110-2 and / A part of one surface of the balancing magnet 185 disposed in the seating grooves 71b and 56b of the bobbin 110-2 may be exposed from the outer surface of the bobbin 110 but is not limited thereto, But may not be exposed to the outer surface of the bobbin 110 in the embodiment.

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

The sensing magnet 180 can move along with the bobbin 110 in the optical axis direction OA owing to the interaction between the coil 120 and the magnet 130. The position sensor 170 can sense the sensing magnet 180), and output the output signal according to the sensed result. For example, the control unit 830 of the camera module or the control unit 780 of the terminal can detect the displacement of the bobbin 110 in the direction of the optical axis, based on the output signal output from the position sensor 170. [

The magnetic field of the sensing magnet 180 may affect the interaction between the magnet 130 and the second coil 230. The balancing magnet 185 may mitigate or eliminate the influence of the magnetic field of the sensing magnet 180 on the magnet 130.

Also, the balancing magnet 185 is disposed on the bobbin 110 so as to be symmetrical with the sensing magnet 180, thereby balancing the weight of the moving part of the AF, and thereby performing an accurate AF operation.

The sensing magnet 180 and the balancing magnet 185 may be omitted and the position sensor may be mounted on the bobbin 110 rather than the housing and the interaction between the coil 120 and the magnet 130 As the bobbin 110 and the position sensor move together in the optical axis direction, the position sensor senses the intensity of the magnetic field of the magnet 130 and can output an output signal according to the sensed result.

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

Referring to Figs. 3 and 11, the circuit board 190 is disposed in the housing 140. Fig.

For example, the circuit board 190 may be disposed on the outer surface of any one of the side portions 141-1 to 141-4 of the housing 140 (e.g., 141-1).

The circuit board 190 includes a body 190a disposed on the outer surface of either side 141-1 of the housing 140, first and second pads (not shown) disposed on the first surface of the body 190a, 191, 192, and a plurality of terminals 19 disposed on a second side of the body 190a.

The first surface of the body 190a may be a surface facing one of the side portions 141-1 of the housing 140 and the second surface of the body 190a may be an opposite surface of the first surface of the body 190a have.

Each of the first and second pads 191 and 192 may be electrically connected to a corresponding one of the plurality of terminals 19. For example, the body 190a may be provided with a circuit pattern or wiring for electrically connecting the first and second pads and the corresponding terminals. The plurality of terminals 19 may be for electrically connecting with external elements.

The body 190a of the circuit board 190a disposed on the first side 141-1 of the housing 140 is connected to the first magnet 130-1 disposed on the first side 141-1 of the housing 140, And the position sensor 170 may be disposed biased to one side of the first side 141-1 of the housing 140. In this case, It is possible to avoid spatial interference between the first magnet 130-1 and the position sensor 170 on the first side 141-1 of the housing 140. [

The body 190a of the circuit board 190 may be provided with third to sixth pads (not shown) for being electrically connected to the position sensor 170. For example, each of the third through sixth pads of the circuit board 190 may be electrically connected to a corresponding one of the plurality of terminals 19 through wiring or circuit patterns provided on the circuit board 190 .

The position sensor 170 may be mounted on the first surface of the circuit board 190 and may be seated or placed in the seating groove 41b of the housing 140. [

The position sensor 170 can sense the intensity of the magnetic field of the sensing magnet 180 according to the movement of the bobbin 110 and can output an output signal (e.g., sensing voltage) according to the sensed result. The control unit 830 of the camera module 200 or the control unit 780 of the terminal 200A controls the optical axis of the bobbin 110 based on an output signal (e.g., a sensing voltage) Can be detected.

For example, at the initial position of the bobbin 110, the position sensor 170 may be perpendicular to the optical axis and may overlap the sensing magnet 180 in a direction parallel to the straight line passing the optical axis.

The position sensor 170 may be implemented as a position detection sensor alone such as a hall sensor or the like.

For example, if the position sensor 170 is implemented as a hall sensor alone, the position sensor 170 may include four terminals (e.g., two input terminals and two output terminals) The two terminals (e.g., input terminals) of the position sensor 1760 can be electrically connected to any two of the third through sixth pads of the circuit board 190 and the remaining two Terminals (e.g., output terminals) may be electrically connected to the remaining two pads of the third through sixth pads of the circuit board 190.

For example, a drive signal may be provided to the position sensor 170 via the third and fourth pads of the circuit board 190 and may be provided to the position sensor 170 via the fifth and sixth pads of the circuit board 190 The output can be transmitted to the circuit board 190.

In another embodiment, the position sensor 170 may be implemented in the form of a driver including a Hall sensor.

For example, if the position sensor 170 is a driver IC including an Hall sensor, the driver IC may include four terminals for transmitting and receiving signals for I2C communication.

The position sensor 170 may include a sensing element or sensing region for sensing a magnetic field.

The sensing area of the position sensor 170 may be located on the opposite side of the first magnet 130 from the center of the position sensor 170 with respect to a reference line parallel to the optical axis.

This reduces the influence of the magnetic field of the first magnet 130-1 on the output of the position sensor 170 by separating the sensing area away from the first magnet 130-1, This is to improve the accuracy of the AF feedback drive.

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

The upper elastic member 150 and the lower elastic member 160 are coupled to the bobbin 110 and the housing 140 and support the bobbin 110.

For example, the upper elastic member 150 may engage with the upper portion, the upper surface, or the upper portion of the upper bobbin 110-1 and the upper portion, the upper surface, or the upper portion of the housing 140 and the lower elastic member 160, Bottom, bottom or bottom of housing 110-2 and bottom, bottom, or bottom of housing 140, respectively.

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

For example, the upper elastic member 150 is not divided, and the lower elastic member 160 can be divided into two, but is not limited thereto.

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

The upper elastic member 150 includes a first inner frame 151 coupled to the upper, upper, or upper end of the upper bobbin 110-1, a first inner frame 151 coupled to the upper, upper, or upper end of the housing 140, And a first frame connection part 153 connecting the first inner frame 151 and the first outer frame 152. [

The first inner frame 151 of the upper elastic member 150 may include a first engagement region coupled with the first engagement portion 115 of the upper bobbin 110-1, And the first outer frame 152 may be provided with a second engagement region coupled with the projection 143 of the housing 140 and the second engagement region may be provided with a through hole, Or in planar form.

Referring to FIG. 12, the lower elastic member 160 may include a first lower spring 160-1 and a second lower spring 160-2 that are spaced apart from each other.

Each of the first and second lower springs 1601-1 and 160-2 includes a second inner frame 161 coupled with a lower portion, a lower portion, or a lower portion of the lower bobbin 110-2, a lower portion of the housing 140, And a second frame connecting portion 163 connecting the second inner frame 161 and the second outer frame 162 to each other.

The second inner frame 161 of each of the first and second lower springs 160-1 and 160-2 may be provided with a conductive bonding member or a third coupling for coupling with the lower bobbin 110-2 by thermal welding. Region, and the third coupling region may be in the form of a plane, a groove, or a hole.

For example, the second outer frame 162 of each of the first and second lower springs 160-1 and 160-2 may be coupled to the protrusion 146 of the housing 140 by a conductive adhesive member or by thermal fusion For example, a hole 162a may be provided.

A first bonding portion 86a may be provided at one end of the second inner frame 161 of the first lower spring 160-1 so that one end of the coil 120 is coupled by brazing or conductive adhesive, A second bonding portion 86b may be provided at one end of the second inner frame 161 of the lower spring 160-2 for coupling the other end of the coil 120 by soldering or a conductive adhesive.

A third bonding portion 87a for bonding with the first pad 191 of the circuit board 190 by soldering or a conductive adhesive is attached to one end of the second outer frame 162 of the first lower spring 160-1 And one end of the second outer frame 162 of the second lower spring 160-2 is connected to the second pad 192 of the circuit board 190 by soldering or a conductive adhesive, A portion 87b may be provided.

The third bonding portion 87a and the fourth bonding portion 87b may be electrically connected to corresponding two terminals among the plurality of terminals 19 of the circuit board 190. [

A driving signal may be provided to the coil 120 by the circuit board 190 and the first and second lower springs 160-1 and 160-2.

For example, the third bonding portion 87a and the fourth bonding portion 87b are located adjacent to the first side portion (e.g., 141-1) of the housing 140 where the body 190a of the circuit board 190 is disposed, can do.

The first bonding portion 86a and the second bonding portion 86b may be positioned adjacent to the first side 142-1 of the housing 140 where the body 190a of the circuit board 190 is disposed But it is not limited thereto and may be located adjacent to the third side 142-3 facing the first side 142-1 of the housing 140. [

Each of the first frame connecting portion 153 and the second frame connecting portion 163 of the upper elastic member 150 and the lower elastic member 160 is formed to bend or curve at least once to form a pattern of a predetermined shape .

The bobbin 110 can be elastically (or elastically) supported by the bobbin 110 in the direction of the optical axis by the positional change and micro-deformation of the first and second frame connection portions 153 and 163.

The lens driving apparatus 100 is provided between the upper elastic member 150 and the housing 140 or between the upper elastic member 150 and the upper bobbin 110-1 in order to absorb and cushion the vibration of the bobbin 110. [ And a damper (not shown) disposed in the housing.

For example, a first damper (not shown) may be disposed in a space between the first frame connecting portion 153 of the upper elastic member 150 and the first escape groove 112a of the upper bobbin 110-1.

For example, the lens driving apparatus 100 may include a second frame connecting portion 163 of each of the first and second lower springs 160-1 and 160-2 and a second escaping groove 163 of the lower bobbin 110-2 (Not shown) disposed between the first damper 112a and the second damper 112b.

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

Next, the base 210 and the cover member 300 will be described.

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

The cover member 300 may be in the form of a box that is open at the bottom and includes an upper plate and side plates and the lower portion of the cover member 300 may be engaged with the upper portion of the base 210. [ The shape of the upper plate of the cover member 300 may be polygonal, for example, rectangular or octagonal, but is not limited thereto.

The cover member 300 may be provided with an opening on the top plate to expose a lens (not shown) coupled to the bobbin 110 to external light. The cover member 300 may be made of a nonmagnetic material such as SUS to prevent the cover member 300 from adhering to the magnet 130, but the present invention is not limited thereto. In another embodiment, the cover member 300 may be formed of a magnetic material to function as yoke for increasing the electromagnetic force due to the interaction between the coil 120 and the magnet 130.

The base 210 may then have an opening corresponding to the opening of the bobbin 110 and / or an opening in the housing 140 and may have a shape that matches or corresponds to the cover member 300, But is not limited thereto.

In order to adhere and fix the cover member 300 to the base 210, the base 210 may have a step 211 at the lower end of which the adhesive may be applied. The step 211 can guide the cover member 300 coupled to the upper side and can face the lower end of the side plate of the cover member 300.

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

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

A protrusion 216 corresponding to the guide groove 148 of the housing 140 may be provided at an edge of the upper surface of the base 210.

The base 210 may have a stopper 23 projecting from the upper surface.

The stopper 23 of the base 210 may be disposed corresponding to the protrusion 216, but is not limited thereto. The stopper 23 may be disposed at a position corresponding to the second frame connection portion 163 of the lower springs 160-1 and 160-2.

The stopper 23 of the base 210 is fixed to the lower springs 160-1 and 160-2 disposed on the base 210 in order to avoid spatial interference between the lower bobbin 110-2 and the lower elastic member 160 And may be positioned higher than the second frame connector 163. The stopper 23 of the base 210 can prevent the lower or lower end of the lower bobbin 110-2 from directly colliding with the upper surface of the base 210 when an external impact is generated.

The base 210 may have a seating groove 210a (see FIG. 2) for seating the lower end of the circuit board 190 on the side surface corresponding to the circuit board 190.

For example, the seating groove 210a may be provided on one side of the base 210 corresponding to the first side 141-1 of the housing 140. [ For example, the terminals 19 of the circuit board 190 may be located in the seating groove 210a.

15 shows a cross-sectional view of a lens driving apparatus 1000 including an integrated bobbin 1110 disposed in a housing 1140 and an AF coil 1120 disposed on a bobbin 1110. Fig.

15, the AF driving coil 1120 may be disposed in the groove 1112 provided on the side (or side) of the bobbin 1110, or may be wound. The remaining portion of the side of the bobbin 1110 except for the groove 1112 requires a minimum thickness to ensure durability and stable strength. The lens driving apparatus 1000 restricts the size of the opening 1101 for mounting the lens by the minimum thickness T of the side portion 1110a of the bobbin 1110 required for disposing the AF driving coil 1120 Therefore, it is difficult to realize a large aperture AF lens driving device. For example, the large diameter may be a case where the diameter of the opening of the bobbin is 5.8 mm or more.

In addition, the AF position sensor 1170 may be disposed in the housing 1140 for driving the feedback AF. When the AF position sensor 1170 is in the form of a driver IC, the size of the AF sensor 1170 is larger than that of the position sensor, It can not be mounted on the corner portion of the housing 1140, which is relatively smaller in size than the side portion of the housing 1140. A driver IC type position sensor can be disposed on the side of the housing 1140. The driver IC disposed on the side of the housing 1140 can be mounted on the bobbin 1110 by spatial interference with the bobbin 1110. [ 1110).

The embodiment includes a bobbin 110 including an upper bobbin 110-1 and a lower bobbin 110-2 which are cut up and down and the coil 1200 is divided into upper bobbin 110-1 and lower bobbin 110-1, 110-2 so that it is not necessary to use an injection molding for winding a separate coil on the bobbin, thereby realizing a lens driving device capable of mounting a lens of a large diameter.

FIG. 16A is a perspective view of a bobbin 1110 according to another embodiment, and FIG. 16B is a perspective view of the bobbin 1110 and the coil 120 shown in FIG. 16A.

The bobbin 110 shown in FIG. 1 has upper and lower bobbins 110-1 and 110-2 that are separated from each other, but the bobbin 1110 shown in FIGS. 16A and 16B has the upper bobbin 110, And does not have the lower bobbin of Fig.

The description of the first opening 101a, the first escape groove 112a, the first engaging portion 115, the side portions 10a to 10d, and the corner portions 11a to 11d described in Fig. The same can be applied to the bobbin 1110.

The bobbin 1110 may include a protrusion 1060a provided at the bottom, bottom, or bottom and a groove 1051a provided at the bottom, bottom, or bottom of the protrusion 1060a.

A portion of the coil 120 may be disposed in the groove 1051a. The protrusion 1060a may be disposed at a corner or a corner of the bobbin 1110. [

The protrusion 1060a of the bobbin 1110 may include a first protrusion 1061 and a second protrusion 1063. Here, the first protrusion 1061 may be replaced with a "first inner protrusion" or a "first support ", and the second protrusion 1063 may be replaced with a" first inner protrusion & Can be expressed.

For example, the first protrusion 1061 and the second protrusion 1063 may protrude from the lower surface of the bobbin 1110 in the optical axis direction (e.g., downward direction).

For example, the first protrusion 1061 and the second protrusion 1063 may be provided on the lower surface of at least one of the corners of the bobbin 1110.

For example, the bobbin 1110 may include four protrusions disposed at four corners of the lower surface of the bobbin 1110.

For example, the bobbin 1110 may protrude from the lower surface of each of the corner portions, and may have a first protrusion 1061 and a second protrusion 1063 corresponding to each other.

The first protrusion 1061 and the second protrusion 1063 may be disposed apart from each other and the second protrusion 1063 may be disposed inside the first protrusion 1061. [

For example, the distance from the center of the opening of the bobbin 1110 to the second projection 1063 may be smaller than the distance from the center of the opening of the bobbin 1110 to the first projection 1061.

For example, the first projection 1061 may be disposed on the outermost side of the lower surface of the corner portion of the bobbin 1110, and the second projection 1063 may be in contact with or connected to the opening of the bobbin 1110.

A groove 1051a or a gap may be provided between the first projection 1061 and the second projection 1063 to allow at least a portion of the coil 120 to be inserted or seated.

For example, the first side of the second protrusion 1063 and the first side of the first protrusion 1061 may face each other and the first side of the second protrusion 1063 and the first side of the second protrusion 1061 A groove 1051a or a gap may be provided between the side surfaces.

The first side of the second projection 1063 and the first side of the first projection 1061 may each be planar to stably support or secure the coil 120. However, it is not limited thereto, and in other embodiments, each of the first side of the second projection 1063 and the first side of the second projection 1061 may be curved.

The second side of the second projection 1063 may be the inner side of the second projection 1063 and may be a curved surface. The second side of the second projection 1063 may be a side opposite to the first side of the second projection.

For example, the second side surface or the inner side surface of the second projection 1063 may have a curved surface having the same curvature as the curvature of the opening of the bobbin 1110. This is for stably supporting the lens barrel or the lens barrel disposed or inserted into the opening of the bobbin 1110.

For example, the area of the lower surface of the second protrusion 1063 may be larger than the area of the lower surface of the first protrusion 1061. Therefore, a space can be secured for securing the seating grooves for placing or seating the sensing magnet 180 and the balancing magnet 185 on the second projection 1063.

The distance between the first side of the second projection 1063 and the second side of the second projection 1063 is shorter than the distance between the second side of the first projection 1061 on the first side of the first projection 1061 The side located on the opposite side of the side).

Four first protrusions 1061 spaced apart from each other and four second protrusions 1063 spaced apart from each other may be disposed on the lower surface of the bobbin 1110.

The second projection 1063 may be disposed on the lower surface of the corner portion of the bobbin 1110 and may be extended or extended to at least one of two adjacent sides of each corner of the bobbin 1110. This is for expanding the area of the second projection 1063 for supporting the coil 120 so as to stably support or fix the coil 120.

The second projection 1063 can be spaced from the edge of the lower surface of the bobbin 1110. For example, the edge may be the edge where the lower surface of the bobbin 1110 and the outer surface of the bobbin 1110 meet.

The bobbin 1110 may have a seating groove (not shown) for placing or inserting the sensing magnet 180 in any one of the second projections 1063. In addition, the bobbin 1110 may be provided with a seating groove 71b for placing or inserting the balancing magnet 185 in any one of the second projections 1063.

For example, the protruding length of the second protrusion 1063 in the optical axis direction may be larger than the length of the first protrusion 1061 in the optical axis direction. This is to prevent the coil 120 from moving to the inside of the bobbin 1110 and to stably support the coil 120.

A second escaping groove 1112 corresponding to or aligned with the second frame connecting portion 163 of the lower elastic member 160 may be provided on the bottom, bottom, or bottom of the second projection 1063 of the bobbin 1110 .

The second inner frame 161 of the lower elastic member 160 may be coupled to the lower ends of the second projections 1063 of the bobbin 1110. [ The depth of the groove 1051a may be 30% to 100% of the total length of the coil 120 in the direction of the optical axis, based on the lower end of the first projection 1061 of the bobbin 1110. For example, when the depth of the groove 1051a is less than 30% of the total length of the coil 120 in the direction of the optical axis, the coil 120 may be detached from the groove 1051a or the coil 120 may be stably fixed I can not.

Although not shown in the drawings, the bobbin of the lens driving apparatus according to another embodiment may be embodied as a lower bobbin 110-2 except the upper bobbin 110-1 of Fig. The height of the sixth protrusion 64 may be greater than the height of the fifth protrusion 62 when the lower bobbin 110-2 is implemented.

The upper elastic member 150 can be engaged with the upper end of the sixth protrusion 64 of the lower bobbin 110-2 and the depth of the groove into which the coil 120 is inserted with respect to the upper end of the fifth protrusion 62 May be 30% to 100% of the total length of the coil 120 in the direction of the optical axis because the coil 120 is stably supported or fixed.

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

For example, a drive signal may be provided to each of the coil 120 and the position sensor 170 via the second holder 800, and an output signal of the position sensor 170 may be transmitted to the second holder 800 have. For example, the output signal of the position sensor 170 may be transmitted to the control unit 830.

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

Fig. 18 shows a perspective view of the portable terminal 200A according to the embodiment, and Fig. 19 shows a configuration diagram of the portable terminal 200A shown in Fig.

18 and 19, the portable terminal 200A includes a body 850, a wireless communication unit 710, an A / V input unit 720, a sensing unit 740, an input / An output unit 750, a memory unit 760, an interface unit 770, a control unit 780, and a power supply unit 790.

The body 850 shown in FIG. 18 is of a bar shape, but is not limited thereto. The body 850 may be a slide type, a folder type, a swing type , A swirl type, and the like.

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

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

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

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

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

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

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

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

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

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

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

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

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

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

For example, the control unit 780 may include an algorithm for AF feedback driving based on a result of sensing the displacement of the bobbin 110. [

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

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

Claims (10)

housing;
An upper bobbin disposed within the housing;
A lower bobbin disposed within the housing and positioned below the upper bobbin;
A coil disposed between the upper bobbin and the lower bobbin;
A magnet disposed in the housing;
An upper elastic member coupled to the upper bobbin; And
And a lower elastic member coupled to the lower bobbin,
Wherein the upper bobbin includes a first outer protrusion protruding from the lower surface,
Wherein the lower bobbin includes a second outer projection projecting from an upper surface,
Wherein the coil is disposed between the lower surface of the upper bobbin and the upper surface of the lower bobbin, and a portion of the coil is disposed within the first outer projection and the second outer projection. The method according to claim 1,
Wherein the first outer projecting portion is disposed at a corner of the upper bobbin and the second outer projecting portion is disposed at a corner of the lower bobbin, and the first outer projecting portion and the second outer projecting portion are arranged to face each other Lens driving device. The method according to claim 1,
Wherein the upper bobbin includes a first inner protrusion spaced apart from the first outer protrusion and the lower bobbin includes a second inner protrusion spaced from the second outer protrusion,
Wherein a portion of the coil is positioned between the first inner protrusion and the first inner protrusion,
And another portion of the coil is positioned between the second outer projection and the second inner projection. The method of claim 3,
The first inner protruding portion is located inside the first outer protruding portion,
And the second inside projection is located inside the second outside projection. The method of claim 3,
The first inner protrusion and the second inner protrusion are opposed to or opposed to each other in the optical axis direction,
Wherein a lower surface of the first inner protruding portion is in contact with an upper surface of the second inner protruding portion and a surface of the first inner protruding portion is in contact with an upper surface of the second inner protruding portion. The method of claim 3,
Wherein the protruding length of the second inner protruding portion in the optical axis direction is larger than the length of the second outer protruding portion in the optical axis direction. The method of claim 3,
Wherein the first inner protrusion is spaced apart from the edge of the lower surface of the upper bobbin and the edge of the upper bobbin is a corner where the lower surface of the upper bobbin meets the outer surface of the upper bobbin,
Wherein the second inner projection is spaced from the edge of the upper surface of the lower bobbin and the edge of the upper surface of the lower bobbin is a corner where the upper surface of the lower bobbin meets the outer surface of the lower bobbin. The method of claim 3,
The upper bobbin includes a first opening and the lower bobbin includes a second opening corresponding to the first opening,
Wherein an inner side surface of the first inner side projection is a curved surface having a curvature equal to a curvature of the first opening,
And an inner side surface of the second inner side projection is a curved surface having a curvature equal to a curvature of the second opening. The method of claim 3,
The first inner protrusion and the first inner protrusion are disposed at each of the four corners of the upper bobbin,
And the second inner protruding portion and the second inner protruding portion are disposed at each of the four corners of the lower bobbin. 10. The method of claim 9,
A second seat provided on one of the first inner projections provided at four corners of the upper bobbin and the second inner projections arranged at four corners of the lower bobbin, A sensing magnet disposed in the groove;
A second inner protrusion disposed at one of four corners of the upper bobbin and a second inner protrusion formed at one of the four inner corners of the upper bobbin, 4 balancing magnet placed in the seating groove; And
And a position sensor disposed in the housing corresponding to the sensing magnet.

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