CN214409530U

CN214409530U - Camera module and electronic device including the same

Info

Publication number: CN214409530U
Application number: CN202120433458.1U
Authority: CN
Inventors: 徐普盛; 李重锡; 尹永复; 朴南绮; 李秉训
Original assignee: Samsung Electro Mechanics Co Ltd
Current assignee: Samsung Electro Mechanics Co Ltd
Priority date: 2020-02-28
Filing date: 2021-02-26
Publication date: 2021-10-15
Anticipated expiration: 2031-02-26
Also published as: KR20210110139A; KR102386054B1

Abstract

The present disclosure provides a camera module. The camera module includes a housing; a focus adjustment unit disposed in the housing; and a shake correction unit provided in the housing, wherein the housing includes a first shake correction driving magnet and a second shake correction driving magnet that provide a driving force to move the shake correction unit in a first direction intersecting the optical axis direction and in a second direction intersecting the optical axis direction and the first direction, and a focus adjustment driving coil that provides a driving force to move the focus adjustment unit in the optical axis direction. The housing further includes first to third yokes provided on the surface of the first shake correction driving magnet, the surface of the second shake correction driving magnet, and the surface of the focus adjustment driving coil, respectively.

Description

Camera module and electronic device including the same

Cross Reference to Related Applications

This application claims priority rights to korean patent application No. 10-2020-0025370, filed on 28.2020, and korean patent application No. 10-2020-0072498, filed on 15.6.2020, which are incorporated herein by reference in their entireties for all purposes.

Technical Field

The following description relates to a camera module and an electronic device including the same.

Background

The micro camera module has been implemented in mobile communication terminal devices (electronic devices) such as smart phones, tablet Personal Computers (PCs), and laptop computers.

As mobile communication terminal devices are manufactured to have a reduced size, image quality may deteriorate due to hand jitter during imaging of an object. Therefore, the technique for correcting hand shake may be beneficial to obtaining a clear image.

When hand shake occurs during imaging of an object, the hand shake may be corrected using an optical image anti-shake (OIS) actuator applying an OIS technique. The OIS actuator may move the lens module in a direction perpendicular to the optical axis.

Recently, a structure in which a plurality of cameras including a wide-angle camera and a telephoto camera are mounted adjacent to each other in a mobile terminal has been implemented to improve performance of camera functions.

However, when the OIS actuator implemented by the magnet and the coil is used for miniaturization and precise driving, performance may be degraded due to magnetic interference between adjacent camera modules.

The above information disclosed in this background section is only for enhancement of understanding of the background of the described technology and therefore it may contain information that does not form the prior art that is known to a person of ordinary skill in the art in this country.

SUMMERY OF THE UTILITY MODEL

The summary of the invention is provided to introduce a selection of concepts in a simplified form that are further described below in the detailed description. This summary is not intended to identify key features or essential features of the claimed subject matter, nor is it intended to be used as an aid in determining the scope of the claimed subject matter.

In a general aspect, a camera module includes a housing; a focus adjustment unit disposed in the housing; and a shake correction unit provided in the housing, wherein the housing includes a first shake correction driving magnet and a second shake correction driving magnet, each of the first shake correction driving magnet and the second shake correction driving magnet being configured to provide a driving force to move the shake correction unit in a first direction intersecting the optical axis direction and a second direction intersecting the optical axis direction and the first direction, and a focus adjustment driving coil configured to provide a driving force to move the focus adjustment unit in the optical axis direction; and wherein the housing further includes first to third yokes provided on the surface of the first shake correction driving magnet, the surface of the second shake correction driving magnet, and the surface of the focus adjustment driving coil, respectively.

The housing may be configured to have a polygonal box shape, and the first to third yokes may be disposed on respective surfaces of the housing and disposed parallel to the optical axis direction.

The focus adjustment unit may include a bearing portion provided on a surface of the housing, and the bearing portion may include a focus adjustment driving magnet opposed to the focus adjustment driving coil.

The bearing portion may be supported by a surface of the housing based on an attractive force between the focus adjustment drive magnet and the third yoke.

The shake correction unit may include a lens holder configured to hold at least one lens, and the lens holder may include a first coil opposing the first shake correction driving magnet and a second coil opposing the second shake correction driving magnet.

The first coil and the second coil may be connected to the flexible substrate.

The flexible substrate may be connected to a sensor substrate in which the image sensor is mounted.

At least a portion of the signal lines and the power lines in the connection line may be separated from each other in the flexible substrate.

The first yoke to the third yoke may each be configured to have a size larger than respective sizes of the first shake correcting drive magnet, the second shake correcting drive magnet, and the focus adjusting drive coil.

The focus adjustment unit may include a bearing provided on the first surface of the housing, the shake correction unit and the bearing may selectively include a first magnetic material and a second magnetic material, and the shake correction unit may be supported by a bottom surface of the bearing based on an attractive force of the first magnetic material and the second magnetic material.

The bearing portion may be supported by a surface of the housing that is disposed parallel to the optical axis direction, and the ball member is interposed between the bearing portion and the surface of the housing that is disposed parallel to the optical axis direction.

The shake correction unit may include a frame provided on an upper portion of the bearing portion in the optical axis direction, and a lens holder provided on an upper portion of the frame in the optical axis direction.

The first ball member may be disposed between the frame and the lens holder, and the second ball member may be disposed between the carrier and the frame.

In a general aspect, a camera module includes a housing; a focus adjustment unit disposed in the housing; and a shake correction unit provided in the focus adjustment unit, wherein the focus adjustment unit includes a bearing portion provided in the housing and configured to move in the optical axis direction, wherein the shake correction unit includes a frame provided in an upper portion of the bearing portion in the optical axis direction, and a lens holder provided in an upper portion of the frame in the optical axis direction, wherein the frame and the lens holder are configured to move in a first direction and a second direction intersecting the optical axis direction based on an interaction between the shake correction driving coil and the shake correction driving magnet, wherein the shake correction unit and the bearing portion selectively include a first magnetic material and a second magnetic material, and wherein the shake correction unit is supported by a bottom surface of the bearing portion based on an attractive force of the first magnetic material and the second magnetic material.

The first magnetic material may be a traction magnet and the second magnetic material may be a traction yoke.

In a general aspect, a portable electronic device includes a plurality of camera modules, each camera module configured to have a different field of view, wherein at least one of the plurality of camera modules includes a housing; a focus adjustment unit disposed in the housing; and a shake correction unit provided in the housing, wherein the housing includes: a first shake correction driving magnet and a second shake correction driving magnet, each of the first shake correction driving magnet and the second shake correction driving magnet being configured to provide a driving force to move the shake correction unit in a first direction intersecting the optical axis direction and a second direction intersecting the optical axis direction and the first direction, and a focus adjustment driving coil configured to provide a driving force to move the focus adjustment unit in the optical axis direction, and wherein the housing further includes first to third yokes respectively provided on a surface of the first shake correction driving magnet, a surface of the second shake correction driving magnet, and a surface of the focus adjustment driving coil.

In a general aspect, a portable electronic device includes a plurality of camera modules, each camera module configured to have a different field of view, wherein at least one of the plurality of camera modules includes a housing; a focus adjustment unit disposed in the housing; and a shake correction unit provided in the focus adjustment unit, wherein the focus adjustment unit includes a bearing portion provided in the housing and configured to move in the optical axis direction, wherein the shake correction unit includes a frame provided in an upper portion of the bearing portion in the optical axis direction, and a lens holder provided in an upper portion of the frame in the optical axis direction, wherein the frame and the lens holder are configured to move in a first direction and a second direction intersecting the optical axis direction based on an interaction between the shake correction drive coil and the shake correction drive magnet, wherein the shake correction unit and the bearing portion selectively include a first magnetic material and a second magnetic material, and wherein the shake correction unit is supported by a bottom surface of the bearing portion based on an attractive force of the first magnetic material and the second magnetic material.

Other features and aspects will become apparent from the following detailed description, the accompanying drawings, and the appended claims.

Drawings

FIG. 1 illustrates a perspective view showing an exemplary camera module according to one or more embodiments;

FIG. 2 illustrates an exploded perspective view of an exemplary camera module in accordance with one or more embodiments;

FIG. 3 shows a cross-sectional view taken along line I-I' of FIG. 1;

FIG. 4A shows a cross-sectional view taken along line II-II' of FIG. 1;

FIG. 4B illustrates a cross-sectional view taken along line II-II' of FIG. 1 in accordance with one or more embodiments;

fig. 5A shows a schematic enlarged view illustrating a portion "a" shown in fig. 3;

fig. 5B shows a schematic enlarged view illustrating a portion "C" shown in fig. 4;

fig. 6 shows a schematic enlarged view illustrating a portion "B" shown in fig. 3;

FIG. 7 shows a schematic plan view of an example of employing an actuator in an example camera module in accordance with one or more embodiments;

FIG. 8 illustrates an exploded perspective view of an example of a lens module mounted on a carrier in a camera module, according to one or more embodiments;

fig. 9A shows a reference diagram of an exemplary electronic device in which two camera modules including the camera module of the exemplary embodiment are mounted; and

fig. 9B shows a reference diagram of an exemplary electronic device in which three or more camera modules including the camera module of the exemplary embodiment are mounted.

Throughout the drawings and detailed description, the same reference numerals will be understood to refer to the same elements, features and structures unless otherwise described or provided. The figures may not be drawn to scale and the relative sizes, proportions and depictions of the elements in the figures may be exaggerated for clarity, illustration and convenience.

Detailed Description

The following detailed description is provided to assist the reader in obtaining a thorough understanding of the methods, apparatuses, and/or systems described herein. Various changes, modifications, and equivalents of the methods, devices, and/or systems described in this application will, however, become apparent after understanding the disclosure of this application. For example, the order of operations described in this application is merely an example, and is not limited to the order set forth in this application, except to the extent that operations must occur in a particular order, but may be varied as will be apparent upon understanding the disclosure of this application. Furthermore, the description of features known after understanding the disclosure of the present application may be omitted for the sake of clarity and conciseness, but it should be noted that the omission of features and description thereof is not an admission that they are part of the common general knowledge.

The features described in this application may be embodied in different forms and should not be construed as limited to the examples described in this application. Rather, the examples described in this application are provided merely to illustrate some of the many possible ways to implement the methods, apparatuses, and/or systems described in this application that will be apparent after understanding the disclosure of this application.

Although terms such as "first", "second", and "third" may be used herein to describe various elements, components, regions, layers or sections, these elements, components, regions, layers or sections are not limited by these terms. Rather, these terms are only used to distinguish one element, component, region, layer or section from another element, component, region, layer or section. Thus, a first member, first component, first region, first layer, or first portion referred to in these examples may also be referred to as a second member, second component, second region, second layer, or second portion without departing from the teachings of the examples described in this application.

Throughout the specification, when an element such as a layer, region or substrate is described as being "on," "connected to" or "coupled to" another element, it can be directly on, "connected to" or "coupled to" the other element or one or more other elements may be present between the element and the other element. In contrast, when an element is referred to as being "directly on," "directly connected to" or "directly coupled to" another element, there are no other elements intervening between the element and the other element.

The terminology used in the present application is for the purpose of describing various examples only and is not intended to be limiting of the disclosure. The articles "a," "an," and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. The terms "comprises," "comprising," and "having" specify the presence of stated features, integers, operations, elements, and/or groups thereof, but do not preclude the presence or addition of one or more other features, integers, operations, elements, components, and/or groups thereof.

Unless otherwise defined, all terms (including technical and scientific terms) used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this disclosure belongs after understanding the disclosure of this application. Terms such as those defined in commonly used dictionaries will be interpreted as having a meaning that is consistent with their meaning in the context of the relevant art and the disclosure of the present application and will not be interpreted in an idealized or overly formal sense unless expressly so defined herein.

These examples relate to a lens driving apparatus and a camera module including the lens driving apparatus. In a non-limiting example, the camera module may be applied to a portable electronic device such as, but not limited to, a mobile communication terminal, a smart phone, a tablet PC, and the like.

The camera module may be an optical device that captures an image or video, and may include a lens that refracts light reflected from an object and a lens driving device that may move the lens to adjust a focus or correct a shake.

Fig. 1 illustrates a perspective view of an exemplary camera module in accordance with one or more embodiments. Fig. 2 illustrates an exploded perspective view of an exemplary camera module in accordance with one or more embodiments.

Referring to fig. 1 and 2, a camera module 1000 according to an example may include a lens barrel 200, a lens driving apparatus 500 moving the lens barrel 200, an image sensor unit 600 converting light incident through the lens barrel 200 into an electrical signal, a case 120 accommodating the lens barrel 200 and the lens driving apparatus 500, and a case 110.

The housing 120 may have a hollow box shape, and may be, for example, a polygonal (square) box shape. The upper portion of the housing 120 may be covered by the outer shell 110.

The lens barrel 200 may have a hollow cylindrical shape such that a plurality of lenses for imaging a subject may be accommodated therein, and the plurality of lenses may be mounted on the lens barrel 200 along an optical axis.

A predetermined number of a plurality of lenses may be arranged according to the design of the lens barrel 200, and the lenses may have optical characteristics, such as the same refractive index or different refractive indices.

The lens driving apparatus 500 may be configured to move the lens barrel 200.

In an example, the lens driving apparatus 500 may adjust the focus by moving the lens barrel 200 in the optical axis (Z-axis) direction, and may correct a shake in imaging by moving the lens barrel 200 in a direction intersecting the optical axis (Z-axis), for example, a direction perpendicular to the optical axis (Z-axis).

The lens driving apparatus 500 may include a focus adjustment unit 300 that adjusts a focus and a shake correction unit 400 that corrects shake.

The image sensor unit 600 may be configured to convert light incident through the lens barrel 200 into an electrical signal.

In an example, the image sensor unit 600 may include an image sensor 610 and a printed circuit board 620 connected to the image sensor 610, and may further include an optical filter, for example, such as an infrared filter.

The filter may block a specific range of light incident through the lens barrel 200, and the infrared filter may be configured to block light in an infrared range.

The image sensor 610 may convert light incident through the lens barrel 200 into an electrical signal.

The electrical signal converted by the image sensor 610 may be output as an image through a display unit of the portable electronic device. The image sensor 610 may be fixed to the printed circuit board 620, and may be electrically connected to the printed circuit board 620 by wire bonding.

The lens barrel 200 and the lens driving apparatus 500 may be accommodated in the housing 120. In an example, the housing 120 may have open upper and lower portions, and the lens barrel 200 and the lens driving apparatus 500 may be accommodated in the housing 120. The image sensor unit 600 may be disposed under the housing 120.

The housing 110 may be coupled to the case 120 to enclose an outer surface of the case 120, and may be configured to protect internal components of the camera module. Additionally, the housing 110 may be configured to shield electromagnetic waves. In an example, the housing 110 may shield electromagnetic waves, so that the electromagnetic waves generated from the camera module may not affect other electronic components provided in the portable electronic device.

In addition, since various electronic components other than the camera module are mounted on the portable electronic device, the housing 110 may shield electromagnetic waves, so that the electromagnetic waves generated from the electronic components may not affect the camera module.

The case 110 may be formed of a metal material and may be grounded to a ground pad provided on the printed circuit board 620, thereby shielding electromagnetic waves.

Fig. 3 shows a cross-sectional view taken along line I-I' in fig. 1. Fig. 4A shows a cross-sectional view taken along line II-II' in fig. 1. Fig. 6 shows a schematic enlarged view illustrating a portion "B" shown in fig. 3.

The focus adjustment unit 300 of the lens driving apparatus 500 of the exemplary embodiment will be described with reference to fig. 3, 4A, 4B, and 6.

In the lens driving apparatus 500 in this example, the lens barrel 200 may move to focus on an object.

In an example, in an exemplary embodiment, a focus adjustment unit 300 for moving the lens barrel 200 in an optical axis (Z-axis) direction may be included.

The focus adjustment unit 300 may include a bearing part 310 that accommodates the lens barrel 200, and a focus adjustment driving unit that generates a driving force to move the lens barrel 200 and the bearing part 310 in an optical axis (Z-axis) direction.

The focus adjustment driving unit may include a magnet 320a and a coil 330 a. The magnet 320a and the coil 330a may be disposed to be opposite to each other in a direction perpendicular to the optical axis (Z-axis). In an example, the magnet 320a and the coil 330a may be selectively disposed substantially parallel to each other on the surfaces of the carrier 310 and the housing 120 disposed parallel to the optical axis direction, respectively.

In an example, the magnet 320a may be mounted on the carrier 310. In an example, the magnet 320a may be mounted on one surface of the carrier 310.

The coil 330a may be mounted on the housing 120. In an example, the coil 330a may be mounted on the housing 120 through the substrate 130. The coil 330a may be fixed to the housing 120 via the substrate 130, and may be disposed in the housing 120 at a position facing the magnet 451 of the shake correction unit 400.

When the magnet 320a is mounted on the carrier 310, the magnet 320a may be configured as a moving member and may move in the optical axis (Z-axis) direction together with the carrier 310, and the coil 330a may be a fixed member fixed to the housing 120. However, examples thereof are not limited thereto, and the positions of the magnet 320a and the coil 330a may be switched with respect to each other.

When power is supplied to the coil 330a, the carrier 310 may move in the optical axis (Z-axis) direction by an electromagnetic force formed or generated between the magnet 320a and the coil 330 a.

Since the lens barrel 200 is accommodated in the carrying section 310, the lens barrel 200 can also move in the optical axis (Z-axis) direction based on the movement of the carrying section 310.

When the bearing 310 moves, the rolling members 370 may be disposed between the bearing 310 and the housing 120 to reduce friction between the bearing 310 and the housing 120. The rolling member 370 may have a spherical shape.

The rolling members 370 may be disposed at both sides of the magnet 320 a.

The first yoke 350 may be disposed in the housing 120. For example, the first yoke 350 may be attached to an outer surface of the case 120 and may be disposed to face the magnet 320a with the coil 330a interposed between the first yoke 350 and the magnet 320 a. The width or height of the first yoke 350 may be greater than the width or height of the magnet 320a to surround the entire magnet 320 a.

An attractive force may be generated between the first yoke 350 and the magnet 320a in a direction perpendicular to the optical axis (Z-axis). Accordingly, the rolling member 370 may be supported by the attractive force formed between the first yoke 350 and the magnet 320a while maintaining the contact state with the bearing part 310 and the housing 120.

The first yoke 350 may also be implemented to focus the magnetic force of the magnet 320a, and may prevent a magnetic field formed by the magnet 320a or the coil 330a included in the focus adjustment driving unit from leaking to the outside of the housing 120. Therefore, even when another camera module mounted adjacently is adjacent to the surface on which the focus adjustment drive unit is mounted, the camera module is not affected by the focus adjustment drive unit. The first yoke 350 may be formed of a magnetic material made of metal or nonmetal.

In this example, a closed loop control method of sensing the position of the lens barrel 200 and providing feedback may be implemented. Thus, position sensor 360 may be necessary for closed loop control. The position sensor 360 may be a hall sensor.

The position sensor 360 may be disposed inside or outside the coil 330a, and the position sensor 360 may be mounted on the substrate 130 on which the coil 330a is mounted.

When the power of the camera module is turned on, the initial position of the lens barrel 200 may be detected by the position sensor 360. Thereafter, the lens barrel 200 may be moved from the detected initial position to the initial set position. The initial position may refer to a position of the lens barrel 200 in the optical axis direction when the camera module is opened, and the initial setting position may refer to a position where the focal point of the lens barrel 200 becomes infinite.

The lens barrel 200 can be moved from the initial setting position to the target position by a drive signal of the circuit device.

During focus adjustment, the lens barrel 200 may move back and forth in the optical axis (Z-axis) direction (i.e., the lens barrel 200 may perform bidirectional movement).

Fig. 4B illustrates a cross-sectional view taken along line II-II' in fig. 1, according to one or more embodiments.

Referring to fig. 4B, in another example, the camera module 2000 may further include a magnet 320B and a coil 330B to ensure a sufficient driving force during focus adjustment. In an example, the coil 330b may be fixed to the case through the substrate 131.

When the area where the magnet is mounted is reduced, the size of the magnet may be reduced according to the thinning tendency of the camera module, so that a sufficient driving force for focus adjustment cannot be ensured.

However, in an exemplary embodiment, the magnets 320a (fig. 2) and 320b may be attached to different surfaces of the carrier 310, and the coils may be disposed on different surfaces of the housing 120 to face the

magnets

320a and 320b, thereby ensuring a sufficient driving force required for focus adjustment even when the camera module has a reduced size.

In another example, the camera module 2000 may or may not have a yoke on the back surface of the coil 330 b. When a yoke is provided, a ball member may be interposed between the bearing 310 and the housing 120. In an example, in the case where the case has a square box shape, all the side surfaces may be covered by the yoke.

Fig. 3 shows a cross-sectional view taken along line I-I' in fig. 1. Fig. 4A is a sectional view taken along line II-II' in fig. 1. Fig. 5A is a schematic enlarged view illustrating a portion "a" shown in fig. 3. Fig. 5B is a schematic enlarged view illustrating a portion "C" shown in fig. 4.

The shake correction unit of this example will be described with reference to fig. 3, 4A, 5A, and 5B.

The shake correction unit 400 can be used to correct image blur or video shake due to factors such as hand shake of a user during capture of an image or video.

In an example, when a shake occurs due to a shake of a hand of a user during imaging, the shake correction unit 400 may compensate for the shake by applying a relative displacement corresponding to the shake to the lens barrel 200.

In an example, the shake correction unit 400 may move a lens module including the lens barrel 200 in a direction intersecting the optical axis (Z axis) (e.g., in a direction perpendicular to the optical axis (Z axis)). The lens module may include a lens barrel 200 and a lens holder 420.

The shake correction unit 400 may include a guide member for guiding the movement of the lens barrel 200 and a shake correction driving unit for generating a driving force to move the guide member in a direction perpendicular to the optical axis (Z-axis).

The guide member may include a frame 410 and a lens holder 420. The frame 410 and the lens holder 420 may be disposed in the carrying part 310 in an optical axis (Z-axis) direction, and may be configured to guide the movement of the lens barrel 200.

The frame 410 and the lens holder 420 may have a space into which the lens barrel 200 may be inserted. The lens barrel 200 may be fixed to a lens holder 420 (see fig. 2).

The frame 410 and the lens holder 420 can move in the bearing 310 in a direction intersecting (or perpendicular to) the optical axis (Z-axis) based on the driving force generated by the shake correction driving unit.

The shake correction driving unit may include a first shake correction driving unit 440 and a second shake correction driving unit 450, and the first shake correction driving unit 440 and the second shake correction driving unit 450 may include

respective magnets

441 and 451 and

respective coils

442 and 452, respectively.

The first shake correction driving unit 440 may generate a driving force in a first axis (e.g., X-axis) direction perpendicular to the optical axis (Z-axis), and the second shake correction driving unit 450 may generate a driving force in a second axis (e.g., Y-axis) direction perpendicular to the first axis (X-axis).

The second axis (Y-axis) may refer to an axis perpendicular to both the optical axis (Z-axis) and the first axis (X-axis).

The first shake correction driving unit 440 and the second shake correction driving unit 450 may be disposed to be orthogonal to each other on a plane perpendicular to the optical axis (Z-axis). In an example, the magnet 441 of the first shake correction driving unit 440 and the magnet 451 of the second shake correction driving unit 450 may be disposed so as to be orthogonal to each other on a plane perpendicular to the optical axis (Z-axis).

The coil 442 of the first shake correction driving unit 440 and the coil 452 of the second shake correction driving unit 450, respectively, may be mounted on the lens holder 420, and the

magnets

441 and 451 opposed to the

coils

442 and 452, respectively, may be mounted on the housing 120. The

coils

442 and 452 and the

magnets

441 and 451 may be disposed substantially parallel to the optical axis and may be disposed opposite to each other in a direction substantially intersecting (perpendicular to) the optical axis.

In an example, the

coils

442 and 452 may be mounted on the lens holder 420 through the substrates 430(430a and 430b), and the

magnets

441 and 451 may be mounted on the case 120 to be opposite to the

coils

442 and 452, respectively.

Position sensors

443 and 453 may be disposed in or

near coils

442 and 452, respectively, on substrate 430.

The

coils

442 and 452 may be moving members that are movable together with the lens holder 420 in a direction perpendicular to the optical axis (Z-axis), and the

magnets

441 and 451 may be fixed parts fixed to the housing 120. When the

position sensors

443 and 453 are provided, the position sensors may be movable members that are movable in a direction perpendicular to the optical axis (Z axis).

Yokes

445 and 455 may be disposed in housing 120. In an example, the

yokes

445 and 455 may be attached to the outer surface of the case 120, and may be attached to the case 120 to be in close contact with the outer surfaces of the

magnets

441 and 451, or have a gap therebetween, so that the

yokes

445 and 455 may surround the

magnets

441 and 451 from the outside. The

yokes

445 and 455 may have a width or height greater than that of the

magnets

441 and 451 to surround the

entire magnets

441 and 451.

In this example, since the

coils

442 and 452 are provided on the moving member and the

magnets

441 and 451 are provided on the fixing member, even when the

yokes

445 and 455 are provided in the housing 120 as the fixing member, a force pulling the lens holder 420 as the moving member is not generated. Therefore, even if the shake correction unit 400 is provided, a camera module in which the magnetic field does not leak to the outside of the housing 120 can be realized.

Specifically, in the example, the

yokes

445 and 455 may also focus the magnetic force of the

magnets

441 and 451, and may prevent the magnetic field leakage by preventing the magnetic field formed by the

magnets

441 and 451 or the

coils

442 and 452 included in the shake correction driving unit from leaking to the outside of the case 120.

Therefore, even when another camera module mounted adjacently is adjacent to the surface on which the shake correction drive unit is mounted, in the exemplary embodiment, the camera module is not affected by the shake correction drive unit.

Yokes

445 and 455 may be formed of a magnetic material formed of a metal or a non-metal material.

In this example, when the

coils

442 and 452 are provided on the lens holder 420 as the moving member, the substrate 430 on which the

coils

442 and 452 are mounted may also be moved together with the lens holder 420 in a direction perpendicular to the optical axis direction.

Accordingly, the connection line 431 extending from the substrate 430 to supply signals and power to the substrate 430 may have a structure that can be easily folded or bent or extended so as not to interfere with the movement of the lens holder 420. The connection line 431 may be a flexible substrate (FPCB). In an example, in the connection line 431, at least a portion of the signal line and the power line may be distinguished from each other, so that the connection line 431 may have a plurality of strands of lines. The connection line 431 may be connected to the

coils

442 and 452.

In this example, although the substrate 430 is shown, the substrate 430 including the two

substrates

430a and 430b connected to each other mounted with the

coils

442 and 452, the

substrates

430a and 430b may not be connected to each other and may be separately provided, so that the two substrates in which the

coils

442 and 452 may be mounted may be provided. In this example, two connection lines 431 may be provided so as to be pulled out from the substrate.

The connection line 431 may extend from the substrate 430 and may be connected to a terminal 625 of a printed circuit board 620, the printed circuit board 620 being a sensor substrate on which the image sensor 610 is mounted. However, examples thereof are not limited thereto, and the connection line 431 may be directly connected to a device in which the camera module is installed.

In this example, a plurality of ball members supporting the shake correction unit 400 may be provided. During shake correction, a plurality of ball members may be configured to guide the frame 410 and the lens holder 420. The plurality of ball members may also be configured to maintain a gap between the carrier 310, the frame 410, and the lens holder 420.

The plurality of ball members may include one or more first ball members 700 and one or more second ball members 800.

The first ball member 700 may guide the movement of the shake correction unit 400 in the first axis (X-axis) direction, and the second ball member 800 may guide the movement of the shake correction unit 400 in the second axis (Y-axis) direction.

In an example, when a driving force is generated in the first axis (X-axis) direction, the first ball member 700 may roll in the first axis (X-axis) direction. Accordingly, the first ball member 700 may guide the movement of the frame 410 and the lens holder 420 in the first axis (X-axis) direction.

When the driving force is generated in the second axis (Y-axis) direction, the second ball member 800 may roll in the second axis (Y-axis) direction. Accordingly, the second ball member 800 may guide the movement of the lens holder 420 in the second axis (Y-axis) direction.

In an example, the first ball member 700 may include a plurality of ball members disposed between the carrier 310 and the frame 410, and the second ball member 800 may include a plurality of ball members disposed between the frame 410 and the lens holder 420.

First guide groove portions that receive the first ball members 700 may be formed on surfaces of the bearing portion 310 and the frame 410 that are opposite to each other in the optical axis (Z-axis) direction, and the first ball members 700 may be received in the first guide groove portions and may be interposed between the bearing portion 310 and the frame 410.

When the first ball member 700 is accommodated in the first guide groove portion, the movement of the first ball member 700 in the optical axis (Z-axis) direction and the second axis (Y-axis) direction can be restricted, and the first ball member 700 can move only in the first axis (X-axis) direction. In an example, the first ball member 700 may roll only in the first axis (X-axis) direction.

A second guide groove portion that accommodates the second ball member 800 may be formed in surfaces of the frame 410 and the lens holder 420 that are opposite to each other in the optical axis (Z-axis) direction, and the second ball member 800 may be accommodated in the second guide groove portion and may be interposed between the frame 410 and the lens holder 420.

When the second ball member 800 is accommodated in the second guide groove portion, the movement of the second ball member 800 in the optical axis (Z-axis) direction and the first axis (X-axis) direction can be restricted, and the second ball member 800 can be moved only in the second axis (Y-axis) direction. In an example, the second ball member 800 may roll only in the second axis (Y-axis) direction.

In an example, a third ball member 900 supporting the movement of the lens holder 420 disposed between the carrier 310 and the lens holder 420 may be provided. The third ball member 900 may guide the movement of the lens holder 420 in the first axis (X-axis) direction and the second axis (Y-axis) direction.

In an example, when a driving force is generated in the first axis (X-axis) direction, the third ball member 900 may roll in the first axis (X-axis) direction. Accordingly, the third ball member 900 can guide the movement of the lens holder 420 in the first axis (X-axis) direction.

When the driving force is generated in the second axis (Y-axis) direction, the third ball member 900 may roll in the second axis (Y-axis) direction. Accordingly, the third ball member 900 can guide the movement of the lens holder 420 in the second axis (Y-axis) direction.

The second and

third ball members

800 and 900 may be in contact with the lens holder 420 and may support the lens holder 420. The second ball member 800 and the third ball member 900 may be disposed at different positions in the optical axis direction (Z-axis direction).

A third guide groove portion that accommodates the third ball member 900 may be formed on surfaces of the carrier portion 310 and the lens holder 420 that are opposed to each other in the optical axis (Z-axis) direction. The third ball member 900 may be accommodated in the third guide groove portions 910 and 920, and may be interposed between the carrier 310 and the lens holder 420.

When the third ball member 900 is accommodated in the third guide groove portions 910 and 920, the third ball member 900 can be restricted from moving in the optical axis (Z-axis) direction, and the third ball member 900 can roll in the first axis (X-axis) direction and the second axis (Y-axis) direction. Accordingly, the planar shape of the third guide groove portions 910 and 920 may be circular.

The first ball member 700 may roll in the first axis (X-axis) direction, the second ball member 800 may roll in the second axis (Y-axis) direction, and the third ball member 900 may roll in the first axis (X-axis) direction and the second axis (Y-axis) direction.

In this example, the lens driving apparatus 500 may use a closed-loop control method of sensing the position of the lens barrel 200 and providing feedback during shake correction.

Therefore,

position sensors

443 and 453 for closed-loop control may be provided, and the

position sensors

443 and 453 may be provided on the inner or outer sides of the

coils

442 and 452 of the first shake correction drive unit 440 and the second shake correction drive unit 450.

The

position sensors

443 and 453 may be hall sensors, and the

position sensors

443 and 453 may detect the position of the lens barrel 200 by the magnet 441 of the first shake correction driving unit 440 and the magnet 451 of the second shake correction driving unit 450.

Fig. 7 is a schematic plan view illustrating an example of employing an actuator in a camera module according to an exemplary embodiment.

Referring to fig. 7, the camera module 1000 in the example can prevent the magnetic field from leaking to all surfaces disposed in a direction perpendicular to the optical axis direction.

In this example, an actuator may be provided, which may implement the focus adjustment unit 300 or the shake correction unit 400, the

magnets

320a, 441, and 451, or the

coils

330a, 442, and 452 on the surface of the housing 120 parallel to the optical axis direction. Further, the

yokes

350, 445, and 455 may be provided on the outer surface of the housing 120 where the focus adjustment unit 300 or the shake correction unit 400 is provided, so that the magnetic field generated by the

magnets

320a, 441, and 451 or the

coils

330a, 442, and 452 may be prevented from leaking.

In other words, the first to

third yokes

350, 445 and 455 may be provided on a side surface of the housing 120, the side surface being substantially parallel to the optical axis direction, or no coil or magnet may be provided. Accordingly, since the

yokes

350, 445, and 455 may be provided on the side surface of the case 120 or the driving actuator (e.g., the

magnets

320a, 441, and 451 or the

coils

330a, 442, and 452) may not be provided, the magnetic field may be prevented from leaking to other electronic components, other camera modules.

Therefore, even when the camera module 1000 in this example is mounted adjacent to another camera module, the magnetic field leakage does not affect the other camera module, so that when a plurality of cameras are mounted adjacent to each other in a single device, mounting flexibility can be improved.

FIG. 8 illustrates an exploded perspective view of an exemplary lens module mounted on a carrier in a camera module, according to one or more embodiments.

Referring to fig. 8, the camera module 1000 in the example may selectively include a first magnetic material 480 and a second magnetic material 380 in the shake correction unit 400 and the carrier 310. In addition, the shake correction unit 400 may be supported by the bottom surface of the carrier 310 by the attractive force between the first magnetic material 480 and the second magnetic material 380. In an example, the first magnetic material 480 and the second magnetic material 380 may be disposed to be opposite to each other in the optical axis direction.

Although not shown in detail, since the shake correction unit 400 in the example has a structure in which the frame 410 and the lens holder 420 are disposed on the bearing portion 310 in order with the ball member interposed between the frame 410 and the lens holder 420, it is desirable that the shake correction unit 400 be supported toward the bearing portion 310 in the optical axis direction.

The first magnetic material 480 or the second magnetic material 380 may be a magnetic material, a material having magnetism, or a material (including a metal or a non-metal material) magnetized in a magnetic field. As a non-limiting example, the first magnetic material 480 or the second magnetic material 380 may be a traction magnet or a traction yoke.

In an example, when the first magnetic material 480 is a traction magnet, the second magnetic material 380 may be a traction yoke or a traction magnet. In addition, when the first magnetic material 480 is a traction yoke, the second magnetic material 380 may be a traction magnet.

In an example, two first magnetic materials 480 may be disposed along the edge of the shake correction unit 400 (the first magnetic materials 480 may be disposed symmetrically about the optical axis), and in order to correspond to the above-described configuration, two second magnetic materials 380 may be disposed to be opposite to the two first magnetic materials 480 in the optical axis direction along the circumference of the inner bottom surface of the bearing part 310.

The shake correction unit 400 may include a frame 410 disposed on an upper portion of the carrier 310 and a lens holder 420 disposed on an upper portion of the frame 410, and the first magnetic material 480 may be disposed in the lens holder 420 disposed in the upper portion in the optical axis direction.

Fig. 9A is a reference diagram illustrating an exemplary electronic device in which two camera modules including an exemplary camera module are mounted. Fig. 9B is a reference diagram illustrating an exemplary electronic device in which three or more camera modules including an exemplary camera module are mounted.

Referring to fig. 9A and 9B, in an example, a plurality of camera modules may be mounted on the respective portable electronic devices 1 and 2 to image a subject. In an example, the portable electronic device may include a first camera module 1000 and

second camera modules

3000, 3001, and 3002. In an example, the first camera module 1000 may be the camera module described in the foregoing examples with reference to fig. 1 to 8.

Fig. 9A shows an example in which two camera modules are provided, and fig. 9B shows an example in which three or more camera modules are provided. In a non-limiting example, the first and

second camera modules

1000, 3000, 3001, and 3002 may be configured to have different fields of view.

As shown in fig. 9A or 9B, in the camera module 1000 in the example, since the

yokes

350, 445, and 455 may be provided on the side surface of the housing 120 or no actuator (e.g., the

magnets

320a, 441, and 451 or the

coils

330a, 442, and 452) is provided, the magnetic field may be prevented from leaking to other adjacent electronic components, other camera modules. Thus, additional camera modules may be installed adjacent to the initial camera module 1000, and the magnetic field leakage of one camera module may not affect the other camera modules.

Accordingly, when a plurality of cameras or camera modules are mounted adjacent to each other in a single device, the design of the arrangement can be determined without considering the influence of magnetic field leakage on the adjacent cameras, so that the plurality of cameras can be flexibly mounted.

According to the above-described example, in this example, the lens driving apparatus 500 and the camera module 1000 including the lens driving apparatus 500 can reduce magnetic field leakage while also including a shake correction function.

According to the above example, the camera module may include an actuator that implements the magnet and the coil and may simultaneously prevent the magnetic flux from leaking.

In addition, in an exemplary camera module, although different camera modules may be disposed adjacent to each other, magnetic field interference may be reduced, so that there may be flexibility in disposing multiple cameras on a single device.

While the present disclosure includes specific examples, it will be apparent upon an understanding of the present disclosure that various changes in form and detail may be made to these examples without departing from the spirit and scope of the claims and their equivalents. The examples described in this application are to be considered in a descriptive sense only and not for purposes of limitation. The description of features or aspects in each example should be considered applicable to similar features or aspects in other examples. Suitable results may still be achieved if the described techniques are performed in a different order and/or if components in the described systems, architectures, devices, or circuits are combined in a different manner and/or replaced or supplemented by other components or their equivalents. Therefore, the scope of the present disclosure is defined not by the specific embodiments but by the claims and their equivalents, and all modifications within the scope of the claims and their equivalents should be understood as being included in the present disclosure.

Claims

1. A camera module, characterized in that the camera module comprises:

a housing;

a focus adjustment unit disposed in the housing; and

a shake correction unit provided in the housing,

wherein the housing includes:

a first shake correcting drive magnet and a second shake correcting drive magnet each configured to provide a driving force to move the shake correcting unit in a first direction intersecting an optical axis direction and a second direction intersecting the optical axis direction and the first direction, and

a focus adjustment driving coil configured to provide a driving force to move the focus adjustment unit in the optical axis direction, an

Wherein the housing further includes a first yoke, a second yoke, and a third yoke that are provided on a surface of the first shake correction driving magnet, a surface of the second shake correction driving magnet, and a surface of the focus adjustment driving coil, respectively.

2. The camera module as in claim 1, wherein,

characterized in that the housing is configured to have a polygonal box shape, an

Wherein the first yoke, the second yoke, and the third yoke are disposed on respective surfaces of the housing and are disposed parallel to the optical axis direction.

3. The camera module as in claim 1, wherein,

characterized in that the focus adjustment unit includes a bearing portion provided on a surface of the housing, an

Wherein the carrier portion includes a focus adjustment drive magnet opposed to the focus adjustment drive coil.

4. The camera module according to claim 3, wherein the bearing portion is supported by a surface of the housing based on an attractive force between the focus adjustment drive magnet and the third yoke.

5. The camera module as in claim 1, wherein,

characterized in that the shake correction unit includes a lens holder configured to hold at least one lens, an

Wherein the lens holder includes a first coil opposing the first shake correction driving magnet and a second coil opposing the second shake correction driving magnet.

6. The camera module of claim 5, wherein the first coil and the second coil are connected to a flexible substrate.

7. The camera module of claim 6, wherein the flexible substrate is connected to a sensor substrate in which the image sensor is mounted.

8. The camera module of claim 6, wherein at least a portion of the signal lines and power lines of the connection lines are separated from each other in the flexible substrate.

9. The camera module according to claim 1, wherein each of the first yoke, the second yoke, and the third yoke is configured to have a size larger than respective sizes of the first shake correction driving magnet, the second shake correction driving magnet, and the focus adjustment driving coil.

10. The camera module as in claim 1, wherein,

characterized in that the focus adjustment unit includes a bearing portion provided on a first surface of the housing,

wherein the shake correcting unit and the bearing portion selectively include a first magnetic material and a second magnetic material, an

Wherein the shake correcting unit is supported by a bottom surface of the bearing part based on an attractive force of the first magnetic material and the second magnetic material.

11. The camera module according to claim 10, wherein the bearing portion is supported by a surface of the housing that is disposed parallel to the optical axis direction, and a ball member is interposed between the bearing portion and the surface of the housing that is disposed parallel to the optical axis direction.

12. The camera module according to claim 10, characterized in that the shake correction unit includes a frame provided in an upper portion of the carrying section in the optical axis direction, and a lens holder provided in an upper portion of the frame in the optical axis direction.

13. The camera module as in claim 12, wherein,

characterized in that a first ball member is provided between the frame and the lens holder, an

Wherein a second ball member is disposed between the carrier and the frame.

14. A camera module, characterized in that the camera module comprises:

a housing;

a focus adjustment unit disposed in the housing; and

a shake correction unit provided in the focus adjustment unit,

wherein the focus adjustment unit includes a bearing portion provided in the housing and configured to move in an optical axis direction,

wherein the shake correction unit includes a frame provided in an upper portion of the bearing portion in the optical axis direction, and a lens holder provided in an upper portion of the frame in the optical axis direction,

wherein the frame and the lens holder are configured to move in a first direction and a second direction intersecting the optical axis direction based on an interaction between the shake correction driving coil and the shake correction driving magnet,

15. The camera module of claim 14, wherein the first magnetic material is a traction magnet and the second magnetic material is a traction yoke.

16. A portable electronic device, characterized in that the portable electronic device comprises:

a plurality of camera modules, each camera module configured to have a different field of view,

wherein at least one of the plurality of camera modules comprises:

a housing;

a focus adjustment unit disposed in the housing; and

a shake correction unit provided in the housing,

wherein the housing includes:

17. A portable electronic device, characterized in that the portable electronic device comprises:

wherein at least one of the plurality of camera modules comprises:

a housing;

a focus adjustment unit disposed in the housing; and

a shake correction unit provided in the focus adjustment unit,