Actuator for optical image stabilization and camera module including same

Abstract

The present disclosure relates to an actuator for optical image stabilization, comprising: a fixed frame having an internal space; a moving frame accommodated in the internal space and configured to linearly and rotatably move on a plane perpendicular to the optical axis; a first ball member disposed between the fixed frame and the moving frame; a first driver disposed on the moving frame and the fixed frame and configured to provide a driving force to the moving frame; a plurality of magnetic bodies disposed on the fixed frame to generate an attractive force with respect to a first driver disposed on the movable frame; a sensor substrate having a portion coupled to the moving frame to be movable together with the moving frame and another portion coupled to the fixed frame; and an image sensor disposed on the portion of the sensor substrate. The present disclosure also relates to a camera module comprising the actuator.

Description

[0001] CROSS-REFERENCE TO RELATED APPLICATIONS

[0002] This application claims the benefit of priority to Korean Patent Application No. 10-2021-0056625 filed in the Korean Intellectual Property Office on April 30, 2021, Korean Patent Application No. 10-2021-0117762 filed in the Korean Intellectual Property Office on September 3, 2021, and Korean Patent Application No. 10-2022-0046938 filed in the Korean Intellectual Property Office on April 15, 2022, the entire disclosures of the above Korean patent applications are incorporated herein by reference for all purposes. Technical Field

[0003] The present disclosure relates to an actuator for optical image stabilization and a camera module including the actuator. Background Art

[0004] Recently, camera modules have been used in mobile communication terminals such as tablet personal computers (PCs), laptop computers, and smart phones.

[0005] In addition, this camera module has been equipped with an actuator with a focus function and an optical image stabilization function in order to generate high-resolution images.

[0006] For example, focusing is performed by moving the lens module in the optical axis (Z-axis) direction, or optical image stabilization is performed by moving the lens module in a direction perpendicular to the optical axis (Z-axis).

[0007] However, recently, as the performance of camera modules has been improved, the weight of the lens module has also increased, and the weight of a driver for moving the lens module has also been affected, making it difficult to accurately control the driving force of the optical image stabilization. Summary of the invention

[0008] The purpose of providing this summary is to introduce a selection of inventive concepts in a concise form, and these inventive concepts will be further described in the following detailed description. This summary is not intended to identify the key features or essential features of the subject matter claimed, nor is it intended to help determine the scope of the subject matter claimed.

[0009] In a general aspect, an actuator for optical image stabilization includes: a fixed frame having an internal space; a moving frame accommodated in the internal space and configured to move linearly and rotatably on a plane perpendicular to an optical axis; a first ball member disposed between the fixed frame and the moving frame; a first driver disposed on the moving frame and the fixed frame and configured to provide a driving force to the moving frame; a plurality of magnetic bodies disposed on the fixed frame to generate an attractive force relative to the first driver disposed on the moving frame; a sensor substrate having a portion connected to the moving frame to be movable together with the moving frame and another portion connected to the fixed frame; and an image sensor disposed on the portion of the sensor substrate.

[0010] Guide grooves may be respectively provided in opposing surfaces of the fixed frame and the moving frame facing each other in the optical axis direction, and a cross section of the guide groove on a plane perpendicular to the optical axis may have a size larger than a diameter of the first ball member.

[0011] The first driver may include a first sub-driver and a second sub-driver, the first sub-driver being configured to generate a driving force in a first axis direction perpendicular to the optical axis, and the second sub-driver being configured to generate a driving force in a second axis direction perpendicular to both the optical axis and the first axis direction. The first sub-driver may include a first magnet disposed on the mobile frame and a first coil disposed on the fixed frame. The second sub-driver may include a second magnet disposed on the mobile frame and a second coil disposed on the fixed frame.

[0012] The fixing frame may be provided with a plurality of through holes passing through the fixing frame in the optical axis direction. The first coil and the second coil may be respectively provided in the plurality of through holes.

[0013] The first substrate may be disposed on the fixing frame, and the first substrate may cover upper portions of the plurality of through holes.

[0014] The first coil and the second coil may be disposed on one surface of the first substrate, and the plurality of magnetic bodies may be disposed on the other surface of the first substrate.

[0015] Either or both of the first magnet and the second magnet may include a plurality of magnets disposed to be spaced apart from each other in a direction perpendicular to the driving force direction.

[0016] A plurality of position sensors facing the plurality of magnets may be disposed on the fixed frame.

[0017] Each of the first and second magnets may have an N pole, a neutral region, and an S pole sequentially disposed along a direction in which a driving force is generated.

[0018] The sensor substrate may include a moving part, a fixed part, and a connecting part, the image sensor is disposed on the moving part, the moving part is coupled to a moving frame, the fixed part is coupled to a fixed frame, and the connecting part connects the moving part and the fixed part. The connecting part may extend along the periphery of the moving part. The connecting part may have a plurality of slits passing through the connecting part in the optical axis direction.

[0019] The connection portion may include a first supporting portion and a second supporting portion, the first supporting portion may have one side connected to the moving portion and the other side spaced apart from the fixed portion, and the second supporting portion may have one side connected to the fixed portion and the other side spaced apart from the moving portion.

[0020] In another general aspect, a camera module includes: a housing having an internal space; a lens module accommodated in the internal space and configured to be movable in the direction of an optical axis; a fixed frame fixedly disposed on the housing; a moving frame configured to move in a direction perpendicular to the optical axis, rotate around the optical axis, and press against the fixed frame relative to the fixed frame; a first ball member disposed between the fixed frame and the moving frame; a first driver disposed on the moving frame and the fixed frame and configured to provide a driving force to the moving frame; and a sensor substrate including a moving part and a fixed part, the moving part being connected to the moving frame and having an image sensor disposed on the moving part, and the fixed part being connected to the fixed frame.

[0021] The first driver may include a first sub-driver and a second sub-driver, the first sub-driver being configured to generate a driving force in a first axis direction perpendicular to the optical axis, and the second sub-driver being configured to generate a driving force in a second axis direction perpendicular to the optical axis and the first axis direction. Either or both of the first sub-driver and the second sub-driver may include a plurality of magnets spaced apart from each other in a direction perpendicular to the direction in which the driving force is generated. A plurality of position sensors facing the plurality of magnets may be provided on the fixed frame.

[0022] The sensor substrate may further include a connection portion connecting the moving portion and the fixed portion to each other. The connection portion, ie, the flexible printed circuit board, may have a plurality of slits passing through the connection portion in the optical axis direction.

[0023] The camera module may further include a second driver including a magnet disposed on the lens module and a coil disposed on the housing and a second ball member disposed between the lens module and the housing. The second ball member may include a first ball group and a second ball group, each of the first ball group and the second ball group having a plurality of balls, and the number of balls in the first ball group and the number of balls in the second ball group may be different from each other.

[0024] A guide groove in which the second ball member is disposed may be provided in the lens module and the housing, respectively. The length of the guide groove in which the first ball group is disposed in the guide groove in the optical axis direction may be different from the length of the guide groove in which the second ball group is disposed in the guide groove in the optical axis direction.

[0025] In another general aspect, a camera module includes a lens module including a lens disposed in a lens barrel, a first actuator, and a second actuator. The first actuator is configured for optical image stabilization and includes: a fixed frame; a mobile frame accommodated in the fixed frame and configured to move linearly and rotatably around an optical axis; a first ball member disposed between the fixed frame and the mobile frame; a first driver disposed on the mobile frame and the fixed frame and configured to drive the mobile frame; a magnetic body configured to generate an attractive force between the fixed frame and the first driver; a sensor substrate having a portion movably coupled to the mobile frame and another portion fixedly coupled to the fixed frame; and an image sensor disposed on the portion of the sensor substrate. The second actuator coupled to the first actuator is configured to focus the lens module in the direction of the optical axis.

[0026] Guide grooves may be respectively provided in opposing surfaces of the fixed frame and the moving frame facing each other in the optical axis direction, and a cross section of the guide groove on a plane perpendicular to the optical axis may have a size larger than a diameter of the first ball member.

[0027] The first driver may include a first sub-driver and a second sub-driver, the first sub-driver being configured to generate a driving force in a first axis direction perpendicular to the optical axis direction, and the second sub-driver being configured to generate a driving force in a second axis direction perpendicular to both the optical axis direction and the first axis direction. The first sub-driver may include a first magnet disposed on a mobile frame and a first coil disposed on a fixed frame. The second sub-driver may include a second magnet disposed on a mobile frame and a second coil disposed on a fixed frame.

[0028] The moving frame may be coupled to the reinforcement plate.

[0029] Other features and aspects will become apparent from the appended claims, the accompanying drawings and the following detailed description. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 is a perspective view illustrating an example of a camera module according to one or more embodiments of the present disclosure.

[0031] Figure 2 is a schematic exploded perspective view showing a camera module according to one or more embodiments of the present disclosure.

[0032] Figure 3is an exploded perspective view of the first actuator.

[0033] Figure 4 is an exploded perspective view of a first driver of a first actuator.

[0034] Figure 5 is a perspective view of a first actuator.

[0035] Fig. 6A is along Figure 5 A cross-sectional view taken along line II-II'.

[0036] Figure 6B yes Fig. 6A Magnified view of part A.

[0037] Fig. 7A is along Figure 5 A cross-sectional view taken along line II'.

[0038] Figure 7B yes Fig. 7A Magnified view of part B.

[0039] Figure 8 An example of a moving frame of a first actuator is shown.

[0040] Fig. 9 is a plan view of a sensor substrate of the first actuator.

[0041] Fig.10 Shows Figure 8 's modified example.

[0042] Fig.11 is a perspective view of a moving frame and a sensor substrate of a first actuator.

[0043] Fig.12 is a plan view showing a form in which a moving frame and a sensor substrate of a first actuator are coupled to each other.

[0044] Fig.13 is an exploded perspective view of the second actuator.

[0045] Fig.14 is a perspective view of the second actuator.

[0046] Fig.15 is a side view of the bearing portion of the second actuator.

[0047] Fig.16 is a perspective view of a housing of the second actuator.

[0048] Fig.17 is along Fig.14 A cross-sectional view taken along line III-III'.

[0049] Fig.18 A modified example of the bearing portion of the second actuator is shown.

[0050] Fig.19 An auxiliary yoke of the second actuator is shown.

[0051] Fig. 20 is a perspective view showing a camera module according to another one or more embodiments of the present disclosure.

[0052] Fig.21 is along Fig. 20 A cross-sectional view taken along line IV-IV'.

[0053] Fig. 22 is a schematic exploded perspective view showing a camera module according to another one or more embodiments of the present disclosure.

[0054] Fig.23 is a perspective view illustrating a fixing frame of a first actuator according to another one or more embodiments of the present disclosure.

[0055] Fig.24 is an exploded bottom perspective view illustrating a fixing frame of a first actuator according to another one or more embodiments of the present disclosure.

[0056] Fig.25 is a perspective view showing a wiring pattern, a support pad, and a yoke portion provided inside a fixing frame of a first actuator according to another one or more embodiments of the present disclosure.

[0057] Fig.26 The manufacturing of the fixing frame of the first actuator according to another one or more embodiments of the present disclosure is shown.

[0058] Fig. 27 is a plan view showing a structure of a fixing frame of a first actuator before a shield case is coupled according to another one or more embodiments of the present disclosure.

[0059] Fig.28 is an exploded perspective view illustrating a first driver of a first actuator according to another one or more embodiments of the present disclosure.

[0060] Fig.29 is a perspective view illustrating a moving frame of a first actuator according to another one or more embodiments of the present disclosure.

[0061] Fig. 30A and Fig. 30B is a plan view of a sensor substrate of a first actuator according to another one or more embodiments of the present disclosure.

[0062] Fig.31is a plan view illustrating a form in which a moving frame and a sensor substrate of a first actuator according to another one or more embodiments of the present disclosure are coupled to each other.

[0063] Fig.32 is an exploded perspective view showing a second actuator according to another one or more embodiments of the present disclosure.

[0064] Fig.33 is a side view of a bearing portion and a housing of a second actuator according to another one or more embodiments of the present disclosure.

[0065] Fig.34 is a perspective view of a housing of a second actuator according to another one or more embodiments of the present disclosure.

[0066] Throughout the drawings and detailed description, the same reference numerals refer to the same elements. For purposes of clarity, illustration, and convenience, the drawings may not be drawn to scale, and the relative sizes, proportions, and depictions of elements in the drawings may be exaggerated. DETAILED DESCRIPTION

[0067] The following specific embodiments are provided to help the reader obtain a comprehensive understanding of the method, device and / or system described herein. However, after understanding the disclosure of the application, various changes, modifications and equivalences of the method, device and / or system described herein will be apparent. For example, the order of operations described herein is merely an example, and except for the operations that must occur in a particular order, it is not limited to the order set forth herein, but can be changed as will be apparent after understanding the disclosure of the application. In addition, for greater clarity and brevity, the description of features known after understanding the disclosure of the application can be omitted.

[0068] The features described herein may be implemented in different forms and should not be construed as being limited to the examples described herein. Rather, the examples described herein are provided only to illustrate some of the many possible ways of implementing the methods, devices and / or systems described herein that will be apparent after understanding the disclosure of the present application.

[0069] Throughout the specification, when an element such as a layer, a region, or a substrate is described as being “on,” “connected to,” or “coupled to” another element, the element may 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. Conversely, when an element is described as being “directly on,” “directly connected to,” or “directly coupled to” another element, no other elements may be present between the element and the other element.

[0070] As used herein, the term "and / or" includes any one of the associated listed items and any combination of any two or more items.

[0071] Although terms such as "first", "second" and "third" may be used herein to describe various members, components, regions, layers or portions, these members, components, regions, layers or portions are not limited by these terms. Rather, these terms are only used to distinguish one member, component, region, layer or portion from another member, component, region, layer or portion. Therefore, without departing from the teachings of the examples described herein, the first member, first component, first region, first layer or first portion mentioned in these examples may also be referred to as the second member, second component, second region, second layer or second portion.

[0072] Furthermore, unless otherwise specified, components included in an embodiment in this specification can be applied to other embodiments.

[0073] Spatially relative terms such as "above", "higher", "below", and "lower" may be used herein for descriptive convenience to describe the relationship of one element relative to another element as shown in the accompanying drawings. In addition to covering the orientations depicted in the accompanying drawings, these spatially relative terms are intended to also cover different orientations of the device in use or operation. For example, if the device in the accompanying drawings is flipped, an element described as being "above" or "higher" relative to another element will be "below" or "lower" relative to the other element. Therefore, depending on the spatial orientation of the device, the term "above" covers both orientations of "above" and "below". The device may also be oriented in other ways (e.g., rotated 90 degrees or in other orientations), and the spatially relative terms used herein should be interpreted accordingly.

[0074] The terms used herein are only used to describe various examples and are not used to limit the present disclosure. Unless the context clearly indicates otherwise, the articles "a", "an" and "the" are intended to include plural forms as well. The words "include", "comprise" and "have" indicate the presence of the features, numbers, operations, components, elements and / or combinations thereof, but do not exclude the presence or addition of one or more other features, numbers, operations, components, elements and / or combinations thereof.

[0075] Variations in the shapes shown in the drawings may occur due to manufacturing techniques and / or tolerances. Therefore, the examples described herein are not limited to the specific shapes shown in the drawings but include variations in shapes that occur during manufacturing.

[0076] The features of the examples described herein can be combined in various ways that will be apparent after understanding the disclosure of the present application. In addition, although the examples described herein have multiple configurations, other configurations that will be apparent after understanding the disclosure of the present application are also feasible.

[0077] Figure 1 is a perspective view showing an example of a camera module according to one or more embodiments of the present disclosure, and Figure 2 is a schematic exploded perspective view showing a camera module according to one or more embodiments of the present disclosure.

[0078] According to one or more embodiments of the present disclosure, an actuator for optical image stabilization and a camera module including the actuator may be installed in a mobile electronic device. The mobile electronic device may be a portable electronic device such as a mobile communication terminal, a smart phone, or a tablet personal computer (PC).

[0079] Reference Figure 1 and Figure 2 , the camera module 1 according to one or more embodiments of the present disclosure may include a lens module 700 , an image sensor S, a first actuator 10 , and a second actuator 20 .

[0080] The first actuator 10 may be an actuator for optical image stabilization, and the second actuator 20 may be an actuator for focusing.

[0081] The lens module 700 may include at least one lens and a lens barrel 710. The at least one lens may be disposed in the lens barrel 710. When a plurality of lenses L are provided, the plurality of lenses L may be installed inside the lens barrel 710 along an optical axis (eg, Z axis).

[0082] The lens module 700 may further include a carrier 730 coupled to the lens barrel 710 .

[0083] The carrier 730 may be provided with a hollow portion passing through the carrier 730 in the optical axis (eg, Z-axis) direction, and the lens barrel 710 may be inserted into the hollow portion and fixedly disposed with respect to the carrier 730 .

[0084] In one or more embodiments of the present disclosure, the lens module 700 may be a moving member that moves in the optical axis (eg, Z axis) direction during auto focusing (AF). To this end, according to one or more embodiments of the present disclosure, the camera module 1 may include a second actuator 20 .

[0085] The lens module 700 may be moved in an optical axis (eg, Z-axis) direction by the second actuator 20 to perform a focusing operation.

[0086] Meanwhile, the lens module 700 may be a fixed member that does not move during optical image stabilization.

[0087] According to one or more embodiments of the present disclosure, the camera module 1 may perform optical image stabilization (OIS) by moving the image sensor S instead of the lens module 700. Since the relatively light image sensor S is moved, the image sensor S may be moved with a smaller driving force. Therefore, the optical image stabilization may be performed more accurately.

[0088] To this end, according to one or more embodiments of the present disclosure, the camera module 1 may include a first actuator 10 .

[0089] The image sensor S may be moved in a direction perpendicular to the optical axis (eg, Z axis) or rotated with the optical axis (eg, Z axis) as a rotation axis by the first actuator 10 to perform optical image stabilization.

[0090] The image sensor S may be moved in a direction perpendicular to the imaging plane of the image sensor S by the first actuator 10. For example, the image sensor S may be moved in a direction perpendicular to the optical axis (e.g., Z axis) or rotated with the optical axis (e.g., Z axis) as a rotation axis to perform optical image stabilization.

[0091] Here, the direction pointed by the imaging surface of the image sensor S may be referred to as the optical axis (eg, Z axis) direction. That is, the image sensor S may be movable in a direction perpendicular to the optical axis (eg, Z axis).

[0092] In the drawings, when it is mentioned that the image sensor S moves in a direction parallel to the imaging plane, it can be understood that the image sensor S moves in a direction perpendicular to the optical axis (eg, the Z axis).

[0093] In addition, when it is mentioned that the image sensor S moves in the first axis direction (e.g., X axis direction) or the second axis direction (e.g., Y axis direction), it can be understood that the image sensor S moves in a direction perpendicular to the optical axis (e.g., Z axis).

[0094] In addition, for the sake of convenience, it has been described that the image sensor S rotates with the optical axis (e.g., Z axis) as the rotation axis, but when the image sensor S rotates, the rotation axis of the image sensor S may not coincide with the optical axis (e.g., Z axis). For example, the image sensor S may rotate with any axis perpendicular to the direction in which the imaging surface of the image sensor S is pointed as the rotation axis.

[0095] In addition, the first axis direction (e.g., X-axis direction) and the second axis direction (e.g., Y-axis direction) are examples of two directions perpendicular to the optical axis (e.g., Z-axis) and intersecting each other. The first axis direction (e.g., X-axis direction) and the second axis direction (e.g., Y-axis direction) described herein can be understood as two directions perpendicular to the optical axis (e.g., Z-axis) and intersecting each other.

[0096] Figure 3 is an exploded perspective view of the first actuator, and Figure 4 It is an exploded perspective view of the first driver 300 of the first actuator.

[0097] Figure 5 is a perspective view of the first actuator, Fig. 6A It is along Figure 5 A cross-sectional view taken along line II-II', Figure 6B yes Fig. 6A A magnified view of part A. Fig. 7A It is along Figure 5 A cross-sectional view taken along line II' of Figure 7B yes Fig. 7A Magnified view of part B.

[0098] Figure 8 An example of a moving frame of a first actuator is shown, and Fig. 9 is a plan view of a sensor substrate of the first actuator.

[0099] Reference Figures 3 to 9 The movement of the image sensor S is further described.

[0100] First, refer to Figure 3 , the first actuator 10 may include a fixed frame 100 , a moving frame 200 , a first driver 300 , and a sensor substrate 400 , and may further include a base 500 .

[0101] The fixing frame 100 may be coupled to the second actuator 20 to be described later. For example, the fixing frame 100 may be coupled to the housing 600 of the second actuator 20. A seating groove 130 in which the housing 600 of the second actuator 20 is seated may be provided in an upper surface of the fixing frame 100.

[0102] The fixed frame 100 may be a fixed member that does not move during focusing and optical image stabilization.

[0103] The fixing frame 100 may be in the shape of a quadrangular box with the top and bottom opened.

[0104] The moving frame 200 may be accommodated in the fixed frame 100. The fixed frame 100 may have a side wall extending downward in the optical axis (eg, Z-axis) direction, and thus, the fixed frame 100 may have an accommodation space for accommodating the moving frame 200 therein.

[0105] The moving frame 200 can move relative to the fixed frame 100 in a direction perpendicular to the optical axis (eg, Z axis), or can rotate with the optical axis (eg, Z axis) as a rotation axis. The moving frame 200 can be a moving member that moves during optical image stabilization.

[0106] For example, the moving frame 200 may be configured to be movable in a first axis (eg, X-axis) direction and a second axis (eg, Y-axis) direction, and to be rotatable with an optical axis (eg, Z-axis) as a rotation axis.

[0107] The first axis (e.g., X-axis) direction may refer to a direction perpendicular to the optical axis (e.g., Z-axis), and the second axis (e.g., Y-axis) direction may refer to a direction perpendicular to the optical axis (e.g., Z-axis) direction and the first axis (e.g., X-axis) direction.

[0108] The moving frame 200 may have a quadrangular plate shape, the center of which is penetrated in the direction of the optical axis (eg, Z axis).

[0109] The infrared cut filter IRCF may be mounted on the upper surface of the moving frame 200. The filter mounting groove 230 (see FIG. 230 ) in which the infrared cut filter IRCF is mounted Figure 8 ) may be disposed on an upper surface of the moving frame 200. The sensor substrate 400 may be mounted on a lower surface of the moving frame 200.

[0110] The first ball member B1 may be disposed between the fixed frame 100 and the moving frame 200 .

[0111] The first ball member B1 may be disposed to contact each of the fixed frame 100 and the moving frame 200 .

[0112] When the moving frame 200 relatively moves or rotates with respect to the fixed frame 100 , the first ball member B1 may move in a rolling motion between the fixed frame 100 and the moving frame 200 to support the movement of the moving frame 200 .

[0113] Meanwhile, since the moving frame 200 is accommodated in the fixed frame 100 , it is necessary to reduce the thickness of the moving frame 200 to reduce the height of the first actuator 10 in the optical axis (eg, Z-axis) direction.

[0114] However, when the thickness of the moving frame 200 is reduced, the rigidity of the moving frame 200 may be reduced, so that there is a risk that the reliability of the moving frame 200 against external impact or the like may be reduced.

[0115] Therefore, the moving frame 200 may be provided with a reinforcing plate 250 in order to reinforce the rigidity of the moving frame 200 .

[0116] As an example, see Figure 8 , the reinforcing plate 250 may be integrally coupled with the moving frame 200 by insert injection molding. In this case, the reinforcing plate 250 may be manufactured to be integral with the moving frame 200 by injecting a resin material into a mold in a state where the reinforcing plate 250 is fixed in the mold.

[0117] The reinforcing plate 250 may be disposed inside the mobile frame 200. In addition, the reinforcing plate 250 may be disposed such that a portion thereof is exposed outside the mobile frame 200. As described above, by exposing a portion of the reinforcing plate 250 outside the mobile frame 200 while integrally forming the reinforcing plate 250 with the mobile frame 200 inside the mobile frame 200, the coupling force between the reinforcing plate 250 and the mobile frame 200 may be improved, and the reinforcing plate 250 may be prevented from being separated from the mobile frame 200.

[0118] Meanwhile, the reinforcement plate 250 may be formed of a rust-proof material.

[0119] The image sensor S may be mounted on the sensor substrate 400 . A portion of the sensor substrate 400 may be coupled to the moving frame 200 , and another portion of the sensor substrate 400 may be coupled to the fixed frame 100 .

[0120] The image sensor S may be mounted on a portion of the sensor substrate 400 coupled to the moving frame 200 .

[0121] Since a portion of the sensor substrate 400 is coupled to the moving frame 200 , when the moving frame 200 moves or rotates, a portion of the sensor substrate 400 may also move or rotate together with the moving frame 200 .

[0122] Therefore, the image sensor S may move or rotate on a plane perpendicular to the optical axis (eg, Z-axis) to perform optical image stabilization when capturing an image.

[0123] The first driver 300 can generate a driving force in a direction perpendicular to the optical axis (e.g., Z axis) to move the moving frame 200 in a direction perpendicular to the optical axis (e.g., Z axis) or rotate the moving frame 200 with the optical axis (e.g., Z axis) as a rotation axis.

[0124] The first driver 300 may include a first sub-driver 310 and a second sub-driver 330. The first sub-driver 310 may generate a driving force in a first axis (eg, X axis) direction, and the second sub-driver 330 may generate a driving force in a second axis (eg, Y axis) direction.

[0125] The first sub driver 310 may include a first magnet 311 and a first coil 313. The first magnet 311 and the first coil 313 may be disposed to face each other in an optical axis (eg, Z-axis) direction.

[0126] The first magnet 311 may be provided on the moving frame 200. The first magnet 311 may include a plurality of magnets. For example, the first magnet 311 may include two magnets, and the two magnets may be provided to be symmetrical with respect to the optical axis (e.g., the Z axis) and spaced apart from each other. For example, the first magnet 311 may include two magnets spaced apart from each other in the direction in which the first magnet 311 generates a driving force (the first axis (e.g., the X axis) direction).

[0127] The mounting groove 220 (see Figure 8 ) may be disposed in the upper surface of the moving frame 200. By inserting and disposing the first magnet 311 in the mounting groove 220, an increase in the overall height of the first actuator 10 and the camera module 1 due to the thickness of the first magnet 311 may be prevented.

[0128] The first magnet 311 may be magnetized so that one surface (e.g., its surface facing the first coil 313) has both an N pole and an S pole. As an example, an N pole, a neutral region, and an S pole may be sequentially arranged on one surface of the first coil 313 facing the first magnet 311 along a first axis (e.g., an X axis). The first magnet 311 may have a shape having a length in a second axis (e.g., a Y axis) direction (see Figure 4 ).

[0129] The first magnet 311 may be magnetized so that the other surface (e.g., the surface opposite to the one surface) has both an S pole and an N pole. As an example, an S pole, a neutral region, and an N pole may be sequentially disposed on the other surface of the first magnet 311 along a first axis (e.g., an X axis).

[0130] The first coil 313 may be disposed to face the first magnet 311. For example, the first coil 313 may be disposed to face the first magnet 311 in the optical axis (eg, Z-axis) direction.

[0131] The first coil 313 may have a ring shape with a hollow portion and may have a shape having a length in the second axis (eg, Y axis) direction. The first coil 313 may include coils whose number corresponds to the number of magnets included in the first magnet 311.

[0132] The first coil 313 may be disposed on the first substrate 350. The first substrate 350 may be mounted on the fixing frame 100 such that the first magnet 311 and the first coil 313 face each other in an optical axis (eg, Z-axis) direction.

[0133] The fixing frame 100 may be provided with a through hole 120. For example, the through hole 120 may be configured to pass through the upper surface of the fixing frame 100 in the optical axis (e.g., Z-axis) direction. The first coil 313 may be disposed in the through hole 120 of the fixing frame 100. By disposing the first coil 313 in the through hole 120 of the fixing frame 100, an increase in the overall height of the first actuator 10 and the camera module 1 due to the thickness of the first coil 313 may be prevented.

[0134] An upper portion of the through hole 120 of the fixing frame 100 may be covered by the first substrate 350 .

[0135] The first magnet 311 may be a moving member mounted on the moving frame 200 and moved together with the moving frame 200 , and the first coil 313 may be a fixed member fixed to the first substrate 350 and the fixed frame 100 .

[0136] When power is applied to the first coil 313 , the moving frame 200 may move in a first axis (eg, X-axis) direction by an electromagnetic force between the first magnet 311 and the first coil 313 .

[0137] The first magnet 311 and the first coil 313 may generate a driving force in a direction (eg, a first axis (eg, X-axis) direction) perpendicular to the direction (optical axis direction) in which they face each other.

[0138] The second sub driver 330 may include a second magnet 331 and a second coil 333. The second magnet 331 and the second coil 333 may be disposed to face each other in the optical axis (eg, Z-axis) direction.

[0139] The second magnet 331 may be provided on the moving frame 200. The second magnet 331 may include a plurality of magnets. For example, the second magnet 331 may include two magnets, and the two magnets may be provided to be spaced apart from each other along the first axis (e.g., X-axis) direction. For example, the second magnet 331 may include two magnets spaced apart from each other in a direction perpendicular to the direction in which the second magnet 331 generates a driving force (the second axis (e.g., Y-axis) direction).

[0140] For reference, the first magnet 311 and the second magnet 331 may be Figure 4 For example, the first magnet 311 may include two magnets spaced apart from each other in a direction perpendicular to the direction in which the first magnet 311 generates a driving force (a first axis (e.g., an X-axis) direction), and the second magnet 331 may include two magnets spaced apart from each other in a direction in which the second magnet 331 generates a driving force (a second axis (e.g., a Y-axis) direction).

[0141] Alternatively, both the first magnet 311 and the second magnet 331 may include two magnets disposed to be spaced apart from each other in a direction perpendicular to a direction in which each magnet generates a driving force.

[0142] The mounting groove 220 (see Figure 8 ) may be disposed in the upper surface of the moving frame 200. By inserting and disposing the second magnet 331 in the mounting groove 220, an increase in the overall height of the first actuator 10 and the camera module 1 due to the thickness of the second magnet 331 may be prevented.

[0143] The second magnet 331 may be magnetized so that one surface thereof (eg, the surface thereof facing the second coil 333) has both an S pole and an N pole. For example, an S pole, a neutral region, and an N pole (see Figure 4 ) may be sequentially disposed along the second axis (eg, Y axis) direction on one surface of the second magnet 331 facing the second coil 333. The second magnet 331 may have a shape having a length in the first axis (eg, X axis) direction.

[0144] The second magnet 331 may be magnetized so that the other surface thereof (e.g., the surface opposite to the one surface) has both an N pole and an S pole. As an example, the N pole, the neutral region, and the S pole may be sequentially arranged on the other surface of the second magnet 331 along the second axis (e.g., the Y axis).

[0145] The magnetization directions of the two magnets of the second magnet 331 may be opposite to each other.

[0146] The second coil 333 may be disposed to face the second magnet 331. For example, the second coil 333 may be disposed to face the second magnet 331 in the optical axis (eg, Z-axis) direction.

[0147] The second coil 333 may have a ring shape with a hollow portion and may have a shape having a length in the first axis (eg, X axis) direction. The second coil 333 may include coils whose number corresponds to the number of magnets included in the second magnet 331.

[0148] The second coil 333 may be disposed on the first substrate 350. The first substrate 350 may be mounted on the fixing frame 100 such that the second magnet 331 and the second coil 333 face each other in the optical axis (eg, Z-axis) direction.

[0149] The fixing frame 100 may be provided with a through hole 120. For example, the through hole 120 may be configured to pass through the upper surface of the fixing frame 100 in the optical axis direction. The second coil 333 may be disposed in the through hole 120 of the fixing frame 100. By disposing the second coil 333 in the through hole 120 of the fixing frame 100, an increase in the overall height of the first actuator 10 and the camera module 1 due to the thickness of the second coil 333 may be prevented.

[0150] The second magnet 331 may be a moving member mounted on the moving frame 200 and moved together with the moving frame 200 , and the second coil 333 may be a fixed member fixed to the first substrate 350 and the fixed frame 100 .

[0151] When power is applied to the second coil 333 , the moving frame 200 may move in the second axis (eg, Y-axis) direction by an electromagnetic force between the second magnet 331 and the second coil 333 .

[0152] The second magnet 331 and the second coil 333 may generate a driving force in a direction (eg, a second axis (eg, Y-axis) direction) perpendicular to the direction (optical axis direction) in which they face each other.

[0153] Meanwhile, the moving frame 200 may be rotated with respect to the optical axis (eg, Z-axis) by the first sub-driver 310 and the second sub-driver 330 .

[0154] The first magnet 311 and the second magnet 331 may be disposed perpendicularly to each other on a plane perpendicular to the optical axis (eg, Z axis), and the first coil 313 and the second coil 333 may also be disposed perpendicularly to each other on a plane perpendicular to the optical axis (eg, Z axis).

[0155] The first ball member B1 may be disposed between the fixed frame 100 and the moving frame 200 .

[0156] The first ball member B1 may be disposed to contact each of the fixed frame 100 and the moving frame 200 .

[0157] The first ball member B1 may be used to guide the movement of the moving frame 200 during the optical image stabilization process. In addition, the first ball member B1 may also be used to maintain a gap between the fixed frame 100 and the moving frame 200.

[0158] When a driving force in the first axis (eg, X axis) direction is generated, the first ball member B1 may move in a rolling motion in the first axis (eg, X axis) direction. Therefore, the first ball member B1 may guide the movement of the moving frame 200 in the first axis (eg, X axis) direction.

[0159] In addition, when a driving force in the second axis (e.g., Y axis) direction is generated, the first ball member B1 can move in a rolling motion in the second axis (e.g., Y axis) direction. Therefore, the first ball member B1 can guide the movement of the moving frame 200 in the second axis (e.g., Y axis) direction.

[0160] The first ball member B1 may include a plurality of balls disposed between the fixed frame 100 and the moving frame 200 .

[0161] Reference Figure 3 The guide groove in which the first ball member B1 is provided may be provided in at least one of the surfaces facing each other in the optical axis (eg, Z axis) direction of the fixed frame 100 and the moving frame 200. A plurality of guide grooves may be provided to correspond to the plurality of balls of the first ball member B1.

[0162] For example, the first guide groove 110 may be provided in the lower surface of the fixed frame 100 , and the second guide groove 210 may be provided in the upper surface of the moving frame 200 .

[0163] The first ball member B1 may be disposed in the first guide groove 110 and the second guide groove 210 to be fitted between the fixed frame 100 and the moving frame 200 .

[0164] Each of the first guide groove 110 and the second guide groove 210 may have a quadrilateral or circular shape in a plan view. The size of the first guide groove 110 and the second guide groove 210 may be larger than the diameter of the first ball member B1. For example, the cross-section of the first guide groove 110 and the second guide groove 210 on a plane perpendicular to the optical axis (e.g., Z axis) may have a size larger than the diameter of the first ball member B1.

[0165] The first guide groove 110 and the second guide groove 210 are not limited to a specific shape as long as the size of the first guide groove 110 and the second guide groove 210 is larger than the diameter of the first ball member B1.

[0166] Therefore, in a state where the first ball member B1 is accommodated in the first guide groove 110 and the second guide groove 210 , the first ball member B1 may move in a rolling motion in a direction perpendicular to the optical axis (eg, the Z axis).

[0167] Meanwhile, a portion of the reinforcing plate 250 may be exposed to the outside through the upper surface of the moving frame 200. The reinforcing plate 250 exposed to the outside may form the bottom surface of the second guide groove 210 (see Fig. 6A , Fig. 7A and Figure 8 ). Therefore, the first ball member B1 may be in contact with the reinforcing plate 250 and roll relative to the reinforcing plate 250 .

[0168] like Fig. 6A As shown, when a driving force is generated in a first axis (eg, X-axis) direction, the moving frame 200 may move in the first axis (eg, X-axis) direction.

[0169] In addition, if Fig. 7A As shown, when a driving force is generated in the second axis (eg, Y axis) direction, the moving frame 200 may move in the second axis (eg, Y axis) direction.

[0170] Furthermore, the moving frame 200 may be rotated by generating a deviation between the magnitude of the driving force in the first axis (eg, X-axis) direction and the magnitude of the driving force in the second axis (eg, Y-axis) direction.

[0171] Since a portion of the sensor substrate 400 is coupled to the moving frame 200 and the image sensor S is disposed on the sensor substrate 400 , when the moving frame 200 moves or rotates, the image sensor S may also move or rotate.

[0172] Reference Figure 6B and Figure 7B , a protrusion portion 240 protruding toward the sensor substrate 400 may be provided on the moving frame 200. For example, the protrusion portion 240 may be provided on the lower surface of the moving frame 200, and may be coupled to the moving portion 410 of the sensor substrate 400. Therefore, a gap may be formed between the body of the moving frame 200 and the sensor substrate 400 in the optical axis (e.g., Z axis) direction, which may prevent interference between the moving frame 200 and the sensor substrate 400 when the moving frame 200 moves on the XY plane.

[0173] although Figure 6B and Figure 7B The protrusion portion 240 provided on the lower surface of the moving frame 200 is illustrated, but this illustration is merely an example, and the protrusion portion 240 may also be provided on the upper surface of the sensor substrate 400 .

[0174] The first actuator 10 may detect the position of the moving frame 200 in a direction perpendicular to the optical axis (eg, the Z axis).

[0175] For this purpose, a first position sensor 315 and a second position sensor 335 (see Figure 4 ). The first position sensor 315 may be disposed on the first substrate 350 to face the first magnet 311, and the second position sensor 335 may be disposed on the first substrate 350 to face the second magnet 331. The first position sensor 315 and the second position sensor 335 may be Hall sensors.

[0176] Here, refer to Figure 4 In the embodiment shown, the second position sensor 335 may include two Hall sensors. For example, the second magnet 331 may include two magnets spaced apart from each other in a direction (first axis (e.g., X axis) direction) perpendicular to the direction in which the second magnet 331 generates a driving force (second axis (e.g., Y axis) direction), and the second position sensor 335 may include two Hall sensors disposed facing the two magnets.

[0177] Whether the moving frame 200 rotates may be sensed by two hall sensors facing the second magnet 331 .

[0178] Meanwhile, torque may be intentionally generated in such a manner as to generate a deviation between the driving force of the first sub-driver 310 and the driving force of the second sub-driver 330 using the combined force of the first sub-driver 310 and the second sub-driver 330 or using two magnets included in the second sub-driver 330 .

[0179] Since the first guide groove 110 and the second guide groove 210 have a quadrilateral or circular shape larger than the diameter of the first ball member B1 in a plan view, the first ball member B1 disposed between the first guide groove 110 and the second guide groove 210 can move unrestrictedly in a rolling motion in a direction perpendicular to the optical axis (e.g., the Z axis).

[0180] Therefore, in a state where the moving frame 200 is supported by the first ball member B1 , the moving frame 200 can rotate about the Z axis.

[0181] Furthermore, when rotation of the moving frame 200 is not desired but linear movement of the moving frame 200 is desired, the driving force of the first sub-driver 310 and / or the driving force of the second sub-driver 330 may be controlled to counteract the unexpectedly generated torque.

[0182] Reference Figure 3 , the first actuator 10 may include a first yoke 317 and a second yoke 337. The first yoke 317 and the second yoke 337 may provide an attractive force so that the fixed frame 100 and the moving frame 200 may be maintained in a state where they are in contact with the first ball member B1.

[0183] The first yoke 317 and the second yoke 337 are disposed on the fixed frame 100. For example, the first yoke 317 and the second yoke 337 may be disposed on the first substrate 350, and the first substrate 350 may be coupled to the fixed frame 100.

[0184] The first coil 313 and the second coil 333 may be disposed on one surface of the first substrate 350 , and the first yoke 317 and the second yoke 337 may be disposed on the other surface of the first substrate 350 .

[0185] The first yoke 317 may be arranged to face the first magnet 311 in the optical axis (e.g., Z-axis) direction. The first yoke 317 may include a plurality of yokes corresponding to twice the number of magnets included in the first magnet 311. For example, each magnet of the first magnet 311 may face two yokes in the optical axis (e.g., Z-axis) direction. Two yokes facing one magnet may be arranged to be spaced apart from each other in the second axis (e.g., Y-axis) direction. However, the first yoke 317 may also include a plurality of yokes corresponding to the number of magnets included in the first magnet 311.

[0186] The second yoke 337 may be arranged to face the second magnet 331 in the optical axis (e.g., Z-axis) direction. The second yoke 337 may include a plurality of yokes corresponding to the number of magnets included in the second magnet 331. For example, when the second magnet 331 includes two magnets, the second yoke 337 may include two yokes. The two yokes may be arranged to be spaced apart from each other in the first axis (e.g., X-axis) direction. Alternatively, each magnet of the second magnet 331 may face two yokes in the optical axis direction. In this case, the two yokes facing one magnet may be arranged to be spaced apart from each other in the first axis (e.g., X-axis) direction.

[0187] Attractive forces may act between the first yoke 317 and the first magnet 311 and between the second yoke 337 and the second magnet 331 in the optical axis (eg, Z-axis) direction, respectively.

[0188] Therefore, the moving frame 200 may be pressed toward the fixed frame 100 , and the fixed frame 100 and the moving frame 200 may thus be maintained in a state where they are in contact with the first ball member B1 .

[0189] The first and second yokes 317 and 337 may be formed of a material capable of generating an attractive force between the first yoke 317 and the first magnet 311 and between the second yoke 337 and the second magnet 331. For example, the first and second yokes 317 and 337 may be provided as magnetic bodies.

[0190] Reference Fig. 9, the sensor substrate 400 may include a moving portion 410, a fixing portion 430, and a connecting portion 450. The sensor substrate 400 may be a rigid flexible printed circuit board (RF PCB).

[0191] The image sensor S may be mounted on the moving part 410. The moving part 410 may be coupled to the lower surface of the moving frame 200. For example, the area of ​​the moving part 410 may be larger than that of the image sensor S, and the moving part 410 outside the image sensor S may be coupled to the lower surface of the moving frame 200.

[0192] The moving part 410 may be a moving member that moves together with the moving frame 200 during optical image stabilization. The moving part 410 may be a rigid PCB.

[0193] The fixing portion 430 may be coupled to the lower surface of the fixing frame 100. The fixing portion 430 may be a fixing member that does not move during optical image stabilization. The fixing portion 430 may be a rigid PCB.

[0194] The connection part 450 may be disposed between the moving part 410 and the fixed part 430 and may connect the moving part 410 and the fixed part 430 to each other. The connection part 450 may be a flexible PCB. When the moving part 410 moves, the connection part 450 disposed between the moving part 410 and the fixed part 430 may be bent.

[0195] The connecting portion 450 may extend along the circumference of the moving portion 410. The connecting portion 450 may be provided with a plurality of slits passing through the connecting portion 450 in the optical axis direction. The plurality of slits may be provided at certain intervals between the moving portion 410 and the fixed portion 430. Therefore, the connecting portion 450 may include a plurality of bridge portions 455 spaced apart from each other by the plurality of slits. The plurality of bridge portions 455 may extend along the circumference of the moving portion 410.

[0196] The connection portion 450 may include a first supporting portion 451 and a second supporting portion 453. The connection portion 450 may be connected to the moving portion 410 through the first supporting portion 451. In addition, the connection portion 450 may be connected to the fixing portion 430 through the second supporting portion 453.

[0197] For example, the first supporting portion 451 may contact and be connected to the moving portion 410 and may be spaced apart from the fixed portion 430. In addition, the second supporting portion 453 may contact and be connected to the fixed portion 430 and may be spaced apart from the moving portion 410.

[0198] For example, the first supporting portion 451 may extend in a first axial direction (e.g., X-axis direction) to connect the plurality of bridge portions 455 of the connecting portion 450 and the moving portion 410 to each other. In one embodiment, the first supporting portion 451 may include two supporting portions disposed on sides opposite to each other in the first axial direction (e.g., X-axis direction).

[0199] The second supporting portion 453 may extend in the second axis direction (e.g., the Y axis direction) to connect the plurality of bridge portions 455 of the connecting portion 450 and the fixing portion 430 to each other. In one embodiment, the second supporting portion 453 may include two supporting portions disposed on opposite sides to each other in the second axis direction (e.g., the Y axis direction).

[0200] Therefore, in a state where the moving portion 410 is supported by the connecting portion 450 , the moving portion 410 can move in a direction perpendicular to the optical axis (eg, Z axis) or rotate relative to the optical axis (eg, Z axis).

[0201] The components connected to the first supporting portion 451 and the second supporting portion 453 respectively may also be arranged opposite to the above. Fig.11 and Fig.12 As shown, the first supporting portion 451 may be connected to the fixed portion 430 and spaced apart from the moving portion 410 , and the second supporting portion 453 may be connected to the moving portion 410 and spaced apart from the fixed portion 430 .

[0202] In an embodiment, when the image sensor S moves in a first axis direction (e.g., X axis direction), the plurality of bridge portions 455 connected to the first support portion 451 may be bent. In addition, when the image sensor S moves in a second axis direction (e.g., Y axis direction), the plurality of bridge portions 455 connected to the second support portion 453 may be bent. In addition, when the image sensor S rotates relative to the optical axis (e.g., Z axis), the plurality of bridge portions 455 connected to the first support portion 451 and the plurality of bridge portions 455 connected to the second support portion 453 may be bent together.

[0203] The base 500 may be coupled to a lower portion of the sensor substrate 400 .

[0204] The base 500 may be coupled to the sensor substrate 400 to cover a lower portion of the sensor substrate 400. The base 500 may prevent foreign matter or the like from being introduced through a gap between the moving portion 410 and the fixed portion 430 of the sensor substrate 400.

[0205] Fig.10 Shows Figure 8 A modified example of Fig.11 is a perspective view of a moving frame and a sensor substrate of a first actuator, and Fig.12is a plan view showing a form in which a moving frame and a sensor substrate of a first actuator are coupled to each other.

[0206] Reference Figures 10 to 12 , the moving frame 200 may be provided with a first escape hole 260 and a second escape hole 270 .

[0207] For example, the first escape hole 260 and the second escape hole 270 may be configured to pass through the moving frame 200 in the optical axis (eg, Z-axis) direction.

[0208] In a state where the moving frame 200 is coupled to the sensor substrate 400 , each of the first and second escape holes 260 and 270 may overlap a space between the fixed portion 430 and the connecting portion 450 of the sensor substrate 400 in an optical axis (eg, Z axis) direction.

[0209] When viewed from the optical axis (eg, Z-axis) direction, a space between the fixing portion 430 and the connecting portion 450 may be exposed through the first and second escape holes 260 and 270 .

[0210] The connection portion 450 of the sensor substrate 400 may include a first support portion 451 and a second support portion 453. The connection portion 450 may be connected to the fixed portion 430 through the first support portion 451. In addition, the connection portion 450 may be connected to the moving portion 410 through the second support portion 453.

[0211] That is, since the first supporting portion 451 is spaced apart from the moving portion 410 and the second supporting portion 453 is spaced apart from the fixing portion 430 , the plurality of bridges 455 of the connecting portion 450 may support the moving portion 410 in a state where the plurality of bridges 455 are movable.

[0212] In this case, when the sensor substrate 400 and the moving frame 200 are coupled to each other in a state where the plurality of bridge portions 455 of the connecting portion 450 are moved, there may be a problem due to difficulty in fixing the position of the moving portion 410 supported by the connecting portion 450 during the coupling process. In this case, since an assembly failure may occur, when the sensor substrate 400 and the moving frame 200 are coupled to each other, the plurality of bridge portions 455 of the connecting portion 450 should not be moved.

[0213] Therefore, in an embodiment, the sensor substrate 400 and the moving frame 200 may be coupled to each other in a state where any one of the first supporting portion 451 and the second supporting portion 453 is connected to all of the moving portion 410, the fixed portion 430, and the plurality of bridge portions 455 (see Fig.11 and Fig.12 lower middle figure).

[0214] exist Fig.11 and Fig.12 , the first supporting portion 451 may be connected to the fixed portion 430 but may be spaced apart from the moving portion 410, and the second supporting portion 453 may be connected to all of the moving portion 410, the fixed portion 430, and the plurality of bridges 455. Therefore, the plurality of bridges 455 do not move in this state.

[0215] After the moving portion 410 of the sensor substrate 400 and the moving frame 200 are coupled to each other, a portion where the second supporting portion 453 and the fixing portion 430 are connected to each other may be exposed through the first and second escape holes 260 and 270 of the moving frame 200 .

[0216] Therefore, a portion where the second supporting portion 453 and the fixing portion 430 are connected to each other may be cut by the first and second escape holes 260 and 270 , and thus, the moving portion 410 of the sensor substrate 400 may have mobility after being coupled to the moving frame 200 .

[0217] Fig.13 is an exploded perspective view of the second actuator, and Fig.14 is a perspective view of the second actuator.

[0218] also, Fig.15 is a side view of the bearing portion of the second actuator, Fig.16 is a perspective view of a housing of a second actuator, and Fig.17 is along Fig.14 A cross-sectional view taken along line III-III'.

[0219] Reference Figures 13 to 17 The movement of the carrier 730 in the direction of the optical axis (eg, the Z axis) is described.

[0220] First, refer to Fig.13 The second actuator 20 may include a bearing portion 730 , a housing 600 , and a second driver 800 , and may further include a casing 630 .

[0221] The carrier 730 may be provided with a hollow portion passing through the carrier 730 in the direction of the optical axis (e.g., Z axis), and the lens barrel 710 may be inserted into the hollow portion and fixedly disposed relative to the carrier 730. Therefore, the lens barrel 710 and the carrier 730 may move together in the direction of the optical axis (e.g., Z axis).

[0222] The housing 600 may have an inner space, and may have a quadrangular box shape with the top and bottom opened. The bearing portion 730 may be disposed in the inner space of the housing 600 .

[0223] The housing 630 may be coupled to the case 600 to protect internal components of the second actuator 20 .

[0224] The housing 630 may be provided with a protruding portion 631 protruding toward a second ball member B2 to be described later. The protruding portion 631 may function as a stopper and a buffer member that limits the range of motion of the second ball member B2.

[0225] The second driver 800 may generate a driving force in the optical axis (eg, Z-axis) direction to move the carrier 730 in the optical axis (eg, Z-axis) direction.

[0226] The second driver 800 may include a third magnet 810 and a third coil 830. The third magnet 810 and the third coil 830 may be disposed to face each other in a direction perpendicular to the optical axis (eg, Z axis).

[0227] The third magnet 810 may be disposed on the carrier 730. For example, the third magnet 810 may be disposed on one side surface of the carrier 730.

[0228] The back yoke may be disposed between the bearing portion 730 and the third magnet 810. The back yoke may improve driving force by preventing magnetic flux of the third magnet 810 from leaking.

[0229] The third magnet 810 may be magnetized so that one surface thereof (e.g., the surface thereof facing the third coil 830) has both an N pole and an S pole. As an example, an N pole, a neutral region, and an S pole may be sequentially disposed on one surface of the third coil 830 facing the third magnet 810 along the optical axis (e.g., Z axis) direction.

[0230] The third magnet 810 may be magnetized so that the other surface thereof (e.g., the surface opposite to the one surface) has both an S pole and an N pole. As an example, the S pole, the neutral region, and the N pole may be sequentially arranged on the other surface of the third magnet 810 along the optical axis (e.g., the Z axis) direction.

[0231] The third coil 830 may be disposed to face the third magnet 810. For example, the third coil 830 may be disposed to face the third magnet 810 in a direction perpendicular to the optical axis (eg, Z axis).

[0232] The third coil 830 may be disposed on the second substrate 890 , and the second substrate 890 may be mounted on the housing 600 such that the third magnet 810 and the third coil 830 face each other in a direction perpendicular to the optical axis (eg, the Z axis).

[0233] The third magnet 810 may be a movable member mounted on the carrier 730 and moving in the optical axis (eg, Z-axis) direction together with the carrier 730 , and the third coil 830 may be a fixed member fixed to the second substrate 890 .

[0234] When power is applied to the third coil 830 , the carrier 730 may move in the optical axis (eg, Z-axis) direction by the electromagnetic force between the third magnet 810 and the third coil 830 .

[0235] Since the lens barrel 710 is disposed in the carrying portion 730 , the lens barrel 710 may also move in the optical axis (eg, Z-axis) direction through the movement of the carrying portion 730 .

[0236] The second ball member B2 may be disposed between the bearing portion 730 and the housing 600. The second ball member B2 may include a plurality of balls disposed along the optical axis (e.g., Z axis). When the bearing portion 730 moves in the direction of the optical axis (e.g., Z axis), the plurality of balls may move in a rolling motion in the direction of the optical axis (e.g., Z axis).

[0237] The third yoke 870 may be disposed on the housing 600. The third yoke 870 may be disposed at a position facing the third magnet 810. For example, the third coil 830 may be disposed on one surface of the second substrate 890, and the third yoke 870 may be disposed on another surface of the second substrate 890.

[0238] The third magnet 810 and the third yoke 870 may generate an attractive force therebetween. For example, the attractive force may act between the third magnet 810 and the third yoke 870 in a direction perpendicular to the optical axis (eg, Z axis).

[0239] Due to the attractive force of the third magnet 810 and the third yoke 870 , the second ball member B2 may come into contact with each of the bearing portion 730 and the housing 600 .

[0240] The guide grooves may be provided in the surfaces of the bearing portion 730 and the housing 600 facing each other. For example, the third guide groove 731 may be provided in the bearing portion 730 , and the fourth guide groove 610 may be provided in the housing 600 .

[0241] The third guide groove 731 and the fourth guide groove 610 may extend in the optical axis (eg, Z axis) direction. The second ball member B2 may be disposed between the third guide groove 731 and the fourth guide groove 610.

[0242] The third guide groove 731 may include a first groove g1 and a second groove g2, and the fourth guide groove 610 may include a third groove g3 and a fourth groove g4. Each groove may extend to have a length in an optical axis (eg, Z-axis) direction.

[0243] The first groove g1 and the third groove g3 can be arranged to face each other in a direction perpendicular to the optical axis (e.g., Z-axis) direction, and some of the multiple balls of the second ball member B2 (e.g., the first ball group BG1 to be described later) can be arranged in the space between the first groove g1 and the third groove g3.

[0244] The first ball group BG1 may be in three-point contact with the first groove g1 and the third groove g3. For example, when the first ball group BG1 includes a plurality of balls, each ball may be in one-point contact with the first groove g1 and two-point contact with the third groove g3 (or vice versa). The first ball group BG1, the first groove g1, and the third groove g3 may be used as an auxiliary guide.

[0245] In addition, the second groove g2 and the fourth groove g4 can be arranged to face each other in a direction perpendicular to the optical axis (e.g., the Z axis), and other balls among the multiple balls of the second ball member B2 (e.g., the second ball group BG2 to be described later) can be arranged in the space between the second groove g2 and the fourth groove g4.

[0246] The second ball group BG2 may be in four-point contact with the second groove g2 and the fourth groove g4. For example, when the second ball group BG2 includes a plurality of balls, each ball may be in two-point contact with the second groove g2 and two-point contact with the fourth groove g4. The second ball group BG2, the second groove g2, and the fourth groove g4 may be used as a main guide.

[0247] The second ball member B2 may include a first ball group BG1 and a second ball group BG2, and each of the first ball group BG1 and the second ball group BG2 may include a plurality of balls disposed along an optical axis (eg, Z-axis) direction.

[0248] The first ball group BG1 and the second ball group BG2 may be arranged to be spaced apart from each other in a direction (eg, X-axis direction) perpendicular to the optical axis (eg, Z-axis). The number of balls in the first ball group BG1 and the number of balls in the second ball group BG2 may be different (see Fig.13 ).

[0249] For example, the first ball group BG1 may include two or more balls disposed along the optical axis (eg, Z-axis) direction, and the second ball group BG2 may include three or more balls disposed along the optical axis (eg, Z-axis) direction.

[0250] However, the concept of the present disclosure is not limited to the number of balls belonging to each ball group, and the number of balls belonging to the first ball group BG1 and the number of balls belonging to the second ball group BG2 may be changed under the assumption that the number of balls belonging to the first ball group BG1 and the number of balls belonging to the second ball group BG2 are different from each other. Hereinafter, for ease of explanation, an embodiment in which the first ball group BG1 includes two balls and the second ball group BG2 includes three balls will be described.

[0251] Reference Fig.17 , the two balls of the first ball group BG1 may have the same diameter. For example, the two balls of the first ball group BG1 may have a first diameter.

[0252] In the second ball group BG2, two balls disposed on the outermost side in the optical axis (e.g., Z axis) direction may have the same diameter. A ball disposed between the two balls may have a smaller diameter than a ball disposed on the outer side. For example, in the second ball group BG2, two balls disposed on the outer side in the optical axis (e.g., Z axis) direction may have a second diameter, and a ball disposed between the two balls may have a third diameter. Here, the second diameter may be greater than the third diameter.

[0253] In addition, the first diameter and the second diameter may be identical to each other. Here, the identical diameter may be a concept including not only physically identical diameters but also manufacturing errors.

[0254] The distance between the centers of the two balls of the first ball group BG1 and the distance between the centers of the two balls disposed outermost in the optical axis direction among the plurality of balls of the second ball group BG2 may be different from each other. For example, the distance between the centers of the two balls having the second diameter may be greater than the distance between the centers of the two balls having the first diameter.

[0255] In order to enable the bearing portion 730 to move parallel to the optical axis (e.g., Z-axis) direction when the bearing portion 730 moves in the optical axis (e.g., Z-axis) direction (i.e., to prevent tilting), it is necessary to position the center point CP of the attraction acting between the third magnet 810 and the third magnetic yoke 870 within the supporting area A obtained by connecting the contact points of the second ball member B2 and the bearing portion 730 (or the housing 600) to each other.

[0256] When the action center point CP of the attractive force deviates from the support area A, the position of the support portion 730 may deviate during the movement of the support portion 730, so that there may be a risk of tilting. Therefore, the support area A may be formed to be as wide as possible.

[0257] In one or more embodiments of the present disclosure, some of the plurality of balls of the second ball member B2 may be formed to have a size (e.g., diameter) that is intentionally smaller than the size (e.g., diameter) of the other balls. In this case, the ball having a larger size among the plurality of balls may intentionally contact the bearing portion 730 (or the housing 600).

[0258] Reference Fig.17, the two balls of the first ball group BG1 may have the same diameter, and thus the first ball group BG1 may be in two-point contact with the bearing portion 730 (or the housing 600). In addition, the diameters of two of the three balls of the second ball group BG2 may be greater than the diameter of the other ball, and thus the second ball group BG2 may be in two-point contact with the bearing portion 730 (or the housing 600).

[0259] Therefore, the second ball member B2 including the first ball group BG1 and the second ball group BG2 may make four-point contact with the bearing portion 730 (or the housing 600). In addition, the support area A obtained by connecting the contact points to each other may have a quadrilateral shape (eg, a trapezoidal shape).

[0260] Therefore, the support area A can be formed relatively widely, and the action center point CP of the attractive force acting between the third magnet 810 and the third yoke 870 can be stably located in the support area A. Therefore, driving stability during focusing can be ensured.

[0261] Meanwhile, when focusing, the plurality of balls of the first ball group BG1 and the plurality of balls of the second ball group BG2 may move in a rolling motion in the optical axis (e.g., Z-axis) direction. Therefore, the size of the support area A may be changed according to the movement of the balls belonging to each ball group. In this case, when the camera module is driven, there may be a risk that the center point of action CP of the attractive force unexpectedly deviates from the support area A.

[0262] In one or more embodiments of the present disclosure, the first groove g1 and the second groove g2 may be configured to have different lengths in the optical axis (e.g., Z axis) direction. For example, the length of the second groove g2 in the optical axis (e.g., Z axis) direction may be greater than the length of the first groove g1 in the optical axis (e.g., Z axis) direction.

[0263] Reference Fig.15 , the second groove g2 may protrude from the lower surface of the bearing portion 730 in the optical axis (e.g., Z axis) direction. For example, a first extension portion 740 protruding downward in the optical axis (e.g., Z axis) direction may be provided on the lower surface of the bearing portion 730. The length of the second groove g2 may be greater than the length of the first groove g1 by the first extension portion 740.

[0264] In addition, the lengths of the third groove g3 and the fourth groove g4 in the optical axis (e.g., Z axis) direction may be different. For example, the length of the fourth groove g4 in the optical axis (e.g., Z axis) direction may be greater than the length of the third groove g3 in the optical axis (e.g., Z axis) direction.

[0265] Reference Fig.13 and Fig.17, the fourth groove g4 may protrude from the lower surface of the housing 600 in the optical axis (e.g., Z axis) direction. For example, a second extension portion 620 protruding downward in the optical axis (e.g., Z axis) direction may be provided on the lower surface of the housing 600. The length of the fourth groove g4 may be greater than the length of the third groove g3 by the second extension portion 620.

[0266] Therefore, in one or more embodiments of the present disclosure, by configuring the number of balls belonging to the first ball group BG1 and the number of balls belonging to the second ball group BG2 to be different from each other, and forming the space accommodating each ball group to have different lengths in the direction of the optical axis (for example, the Z axis), even if the size of the support area A changes, the size of the support area A can be prevented from changing or the center point CP of the attraction force can be prevented from deviating from the support area A.

[0267] Furthermore, the second groove g2 and the fourth groove g4 corresponding to the main guide of the main guide and the auxiliary guide may be configured to have lengths greater than those of the first groove g1 and the third groove g3 , respectively, and the size of the support area A may thus be increased.

[0268] Furthermore, escape areas may be provided in the fixed frame 100 and the moving frame 200 of the first actuator 10 to ensure a space where the first extending portion 740 and the second extending portion 620 may protrude.

[0269] That is, the first receiving portion 140 may be provided in the fixed frame 100, the second receiving portions 280 and 290 may be provided in the moving frame 200, and the first receiving portion 140 and the second receiving portions 280 and 290 may be provided in a region overlapping each other in the optical axis (e.g., Z-axis) direction (see Figure 3 , Figure 8 and Fig.10 ).

[0270] The first receiving portion 140 may have a hole shape passing through the fixed frame 100 in the optical axis (eg, Z axis) direction. The second receiving portions 280 and 290 may have a hole shape passing through the moving frame 200 in the optical axis (eg, Z axis) direction or a groove shape.

[0271] In addition, when the first actuator 10 and the second actuator 20 are connected to each other, the first extension portion 740 and the second extension portion 620 may be respectively located in the first accommodation portion 140 and the second accommodation portion 280 and 290. Since the moving frame 200 is configured to move within the XY plane, the size of the first accommodation portion 140 and the second accommodation portion 280 and 290 within the XY plane may be larger than the size of the first extension portion 740 and the second extension portion 620 relative to the movement amount of the moving frame 200.

[0272] Therefore, even when the first extension portion 740 is formed to protrude from the lower surface of the bearing portion 730 and the second extension portion 620 is formed to protrude from the lower surface of the housing 600 at the second actuator 20, the protruding portion can also be set in the first actuator 10, and therefore, the overall height of the camera module 1 can be not increased.

[0273] At the same time, the second actuator 20 may sense the position of the carrier 730 in the direction of the optical axis (eg, the Z axis).

[0274] For this purpose, a third position sensor 850 (see Fig.13 ). The third position sensor 850 may be disposed on the second substrate 890 to face the third magnet 810. The third position sensor 850 may be a Hall sensor.

[0275] Meanwhile, in an embodiment, the third magnet 810 may be disposed such that an action center point CP of an attractive force acting between the third magnet 810 and the third yoke 870 is positioned closer to the main guide than to the auxiliary guide.

[0276] For example, refer to Fig.18 , on one side surface of the bearing portion 730 , the third magnet 810 may be disposed to be eccentric toward any one side in a length direction (eg, a first axis direction (eg, an X-axis direction)) of the third magnet 810 .

[0277] The center 732 of one side surface of the bearing portion 730 and the center 811 of the third magnet 810 may be disposed to be misaligned with each other. The direction in which the third magnet 810 is eccentric may be a direction toward the main guide.

[0278] That is, the third magnet 810 may be disposed closer to the main guide than to the auxiliary guide.

[0279] Since the support area A is formed to have a greater length in the optical axis (e.g., Z-axis) direction, since it is closer to the main guide, the center point CP of the attraction force can be positioned within the support area A by setting the third magnet 810 close to the main guide.

[0280] Reference Fig.19 In an embodiment, the auxiliary yoke 871 may be disposed at a position facing the third magnet 810. For example, the auxiliary yoke 871 may be disposed on the second substrate 890 to face the third magnet 810.

[0281] The second substrate 890 may be provided with a guide hole 891 passing through the second substrate 890 , and the auxiliary yoke 871 may be disposed in the guide hole 891 to directly face the third magnet 810 .

[0282] The auxiliary yoke 871 may be located closer to the main guide than the auxiliary guide. The auxiliary yoke 871 may be formed of a material capable of generating an attractive force with respect to the third magnet 810.

[0283] Therefore, the combined force of the attractive force acting between the third magnet 810 and the third yoke 870 and the attractive force generated between the third magnet 810 and the auxiliary yoke 871 may be positioned closer to the main guide than to the auxiliary guide.

[0284] According to one or more embodiments of the present disclosure, the camera module 1 can be configured so that the lens module 700 moves in the direction of the optical axis (e.g., the Z axis) during autofocusing, and can be configured so that the image sensor S moves in a direction perpendicular to the optical axis (e.g., the Z axis) during optical image stabilization.

[0285] Therefore, even if the lens module 700 moves in the optical axis (eg, Z-axis) direction when focusing, the relative positions of the magnet and the coil of the first driver 300 do not change, and thus, the driving force for optical image stabilization can be accurately controlled.

[0286] Furthermore, even if the image sensor S moves in a direction perpendicular to the optical axis during optical image stabilization, the relative positions of the magnet and the coil of the second driver 800 do not change, and therefore, the driving force for focusing can be accurately controlled.

[0287] In the following, reference will be made to Figures 20 to 34 A camera module 1 ′ according to another one or more embodiments of the present disclosure will be described.

[0288] Reference Fig. 20 and Fig.21 , a camera module 1 ′ according to another one or more embodiments of the present disclosure may include a lens module 7000 , an image sensor S, a first actuator 10 ′, and a second actuator 20 ′.

[0289] The first actuator 10 ′ may be an actuator for optical image stabilization, and the second actuator 20 ′ may be an actuator for focusing.

[0290] The lens module 7000 may include at least one lens and a lens barrel 7100 (see Fig. 22 ). At least one lens may be disposed in the lens barrel 7100. When a plurality of lenses L are provided, the plurality of lenses L may be installed in the lens barrel 7100 along an optical axis (eg, a Z axis).

[0291] The lens module 7000 may further include a carrier 7300 coupled to the lens barrel 7100 (see Fig.32 ).

[0292] The carrier 7300 may be provided with a hollow portion passing through the carrier 7300 in the optical axis (eg, Z-axis) direction, and the lens barrel 7100 may be inserted into the hollow portion and fixedly disposed relative to the carrier 7300 .

[0293] In another one or more embodiments of the present disclosure, the lens module 7000 may be a moving member that moves in the optical axis (eg, Z axis) direction during auto focusing (AF). To this end, according to another one or more embodiments of the present disclosure, the camera module 1' may include a second actuator 20'.

[0294] The lens module 7000 may be moved in an optical axis (eg, Z-axis) direction by the second actuator 20 ′ to perform a focusing operation.

[0295] Meanwhile, the lens module 7000 may be a fixed member that does not move during optical image stabilization.

[0296] According to another one or more embodiments of the present disclosure, the camera module 1' may perform optical image stabilization (OIS) by moving the image sensor S instead of the lens module 7000. Since the relatively light image sensor S is moved, the image sensor S may be moved with a smaller driving force. Therefore, the optical image stabilization may be performed more accurately.

[0297] To this end, according to another one or more embodiments of the present disclosure, the camera module 1 ′ may include a first actuator 10 ′.

[0298] The image sensor S may be moved in a direction perpendicular to the optical axis (eg, Z axis) or rotated with the optical axis (eg, Z axis) as a rotation axis by the first actuator 10 ′ to perform optical image stabilization.

[0299] That is, the image sensor S can be moved by the first actuator 10' in a direction perpendicular to the direction in which the imaging surface of the image sensor S is directed. For example, the image sensor S can be moved in a direction perpendicular to the optical axis (e.g., Z axis) or rotated with the optical axis (e.g., Z axis) as a rotation axis to perform optical image stabilization.

[0300] In the embodiments, for convenience, it has been described that the image sensor S rotates with the optical axis (e.g., Z axis) as the rotation axis, but when the image sensor S rotates, the rotation axis of the image sensor S may not coincide with the optical axis (e.g., Z axis). For example, the image sensor S may rotate with any axis perpendicular to the direction to which the imaging surface of the image sensor S points as the rotation axis.

[0301] Reference Fig. 22The first actuator 10' may include a fixed frame 1000, a moving frame 2000, a first driver 3000 (see Fig.28 ) and a sensor substrate 4000, and may also include a base 5000.

[0302] The fixing frame 1000 may be coupled to the second actuator 20' which will be described later. For example, the fixing frame 1000 may be connected to the housing 6000 (see FIG. 6 ) of the second actuator 20'. Fig.32 ).

[0303] The fixed frame 1000 may be a fixed member that does not move during focusing and optical image stabilization.

[0304] The fixing frame 1000 may have a quadrangular plate shape whose center is penetrated in the direction of the optical axis (eg, Z axis).

[0305] The moving frame 2000 may be accommodated in the fixed frame 1000. The fixed frame 1000 may have a side wall extending downward in the optical axis (eg, Z axis) direction, and thus, the fixed frame 1000 may have an accommodation space for accommodating the moving frame 2000 therein.

[0306] The moving frame 2000 can move relative to the fixed frame 1000 in a direction perpendicular to the optical axis (eg, Z axis), or can rotate with the optical axis (eg, Z axis) as a rotation axis. That is, the moving frame 2000 can be a moving member that moves during optical image stabilization.

[0307] For example, the moving frame 2000 may be configured to be movable in a first axis (eg, X-axis) direction and a second axis (eg, Y-axis) direction, and to be rotatable with an optical axis (eg, Z-axis) as a rotation axis.

[0308] The first axis (e.g., X-axis) direction may refer to a direction perpendicular to the optical axis (e.g., Z-axis), and the second axis (e.g., Y-axis) direction may refer to a direction perpendicular to both the optical axis (e.g., Z-axis) direction and the first axis (e.g., X-axis) direction.

[0309] The moving frame 2000 may have a quadrilateral plate shape whose center is penetrated in the optical axis (eg, Z-axis) direction.

[0310] The infrared cut filter IRCF may be mounted on the upper surface of the moving frame 2000. The filter mounting groove 2300 (see FIG. 2301 ) in which the infrared cut filter IRCF is mounted Fig.29 ) may be disposed on an upper surface of the moving frame 2000. The sensor substrate 4000 may be mounted on a lower surface of the moving frame 2000.

[0311] The first ball member B1 may be disposed between the fixed frame 1000 and the moving frame 2000 .

[0312] The first ball member B1 may be disposed to contact each of the fixed frame 1000 and the moving frame 2000 .

[0313] When the moving frame 2000 relatively moves or rotates with respect to the fixed frame 1000 , the first ball member B1 may move in a rolling motion between the fixed frame 1000 and the moving frame 2000 to support the movement of the moving frame 2000 .

[0314] Meanwhile, since the moving frame 2000 is accommodated in the fixed frame 1000 , it is necessary to reduce the thickness of the moving frame 2000 to reduce the height of the first actuator 10 ′ in the optical axis (eg, Z-axis) direction.

[0315] However, when the thickness of the moving frame 2000 is reduced, the rigidity of the moving frame 2000 may be reduced, so that there is a risk that the reliability of the moving frame 2000 against external impacts and the like will be reduced.

[0316] Therefore, the moving frame 2000 may be provided with a reinforcing plate 2500 to reinforce the rigidity of the moving frame 2000 .

[0317] As an example, see Fig.29 , the reinforcing plate 2500 may be integrally coupled with the moving frame 2000 by insert injection molding. In this case, the reinforcing plate 2500 may be manufactured to be integral with the moving frame 2000 by injecting a resin material into a mold in a state where the reinforcing plate 2500 is fixed in the mold.

[0318] The reinforcing plate 2500 may be disposed inside the mobile frame 2000. In addition, the reinforcing plate 2500 may be disposed so that a portion thereof is exposed outside the mobile frame 2000. As described above, by exposing a portion of the reinforcing plate 2500 outside the mobile frame 2000 while integrally forming the reinforcing plate 2500 with the mobile frame 2000 inside the mobile frame 2000, the coupling force between the reinforcing plate 2500 and the mobile frame 2000 may be improved, and the reinforcing plate 2500 may be prevented from being separated from the mobile frame 2000.

[0319] Meanwhile, the reinforcement plate 2500 may be formed of a rust-proof material.

[0320] Reference Fig. 22 , the image sensor S may be mounted on the sensor substrate 4000 . A portion of the sensor substrate 4000 may be coupled to the moving frame 2000 , and another portion of the sensor substrate 4000 may be coupled to the fixed frame 1000 .

[0321] The image sensor S may be mounted on a portion of the sensor substrate 4000 coupled to the moving frame 2000 .

[0322] Since a portion of the sensor substrate 4000 is coupled to the moving frame 2000 , when the moving frame 2000 moves or rotates, a portion of the sensor substrate 4000 may also move or rotate together with the moving frame 2000 .

[0323] Therefore, the image sensor S may move or rotate on a plane perpendicular to the optical axis (eg, Z-axis) to perform optical image stabilization when capturing an image.

[0324] Reference Fig.28 , the first driver 3000 can generate a driving force in a direction perpendicular to the optical axis (e.g., Z axis) to move the moving frame 2000 in a direction perpendicular to the optical axis (e.g., Z axis) or rotate the moving frame 2000 with the optical axis (e.g., Z axis) as the rotation axis.

[0325] The first driver 3000 may include a first sub-driver 3100 and a second sub-driver 3300. The first sub-driver 3100 may generate a driving force in a first axis (eg, X axis) direction, and the second sub-driver 3300 may generate a driving force in a second axis (eg, Y axis) direction.

[0326] The first sub driver 3100 may include a first magnet 3110 and a first coil 3130. The first magnet 3110 and the first coil 3130 may be disposed to face each other in an optical axis (eg, Z-axis) direction.

[0327] The first magnet 3110 may be disposed on the mobile frame 2000. The first magnet 3110 may include a plurality of magnets. For example, the first magnet 3110 may include two groups of magnets, which are arranged to be spaced apart from each other in the direction (first axis (e.g., X-axis) direction) in which the first magnet 3110 generates a driving force. Each group of magnets may include at least two magnets. In addition, the magnets included in each group of magnets may be arranged to be spaced apart from each other along the second axis (e.g., Y-axis) direction.

[0328] It is also possible to use a magnet having a long shape in the second axis (e.g., Y axis) direction, but when the magnet has a shape that is too long in one direction, there is a risk that the magnet will be damaged during manufacturing. Therefore, reliability during manufacturing can be improved by arranging a plurality of magnets spaced apart from each other in the length direction as a group.

[0329] The mounting groove 2200 (see Fig.29) may be disposed in the upper surface of the moving frame 2000. By inserting and disposing the first magnet 3110 in the mounting groove 2200, an increase in the overall height of the first actuator 10' and the camera module 1' due to the thickness of the first magnet 3110 may be prevented.

[0330] The first magnet 3110 may be magnetized so that one surface (e.g., its surface facing the first coil 3130) has both an N pole and an S pole. For example, an N pole, a neutral region, and an S pole may be sequentially arranged on one surface of the first magnet 3110 facing the first coil 3130 along a first axis (e.g., an X axis). The first magnet 3110 may have a shape having a length in a second axis (e.g., a Y axis) direction (see Fig.28 ).

[0331] The first magnet 3110 may be magnetized so that the other surface (e.g., the surface opposite to the one surface) has both an S pole and an N pole. As an example, the S pole, the neutral region, and the N pole may be sequentially arranged on the other surface of the first magnet 3110 along the first axis (e.g., the X axis).

[0332] All magnetization directions of polarities of the plurality of magnets included in the first magnet 3110 may be identical to each other.

[0333] The first coil 3130 may be disposed to face the first magnet 3110. For example, the first coil 3130 may be disposed to face the first magnet 3110 in the optical axis (eg, Z-axis) direction.

[0334] The first coil 3130 may have a ring shape with a hollow portion, and may have a shape having a length in the second axis (e.g., Y axis) direction. The first coil 3130 may include coils whose number is less than the number of magnets included in the first magnet 3110. For example, the first coil 3130 may include two coils, which are arranged to be spaced apart from each other in the direction of generating the driving force (the first axis (e.g., X axis) direction), and each coil may be arranged to face each group of magnets of the first magnet 3110.

[0335] The first magnet 3110 may be a moving member that is mounted on the moving frame 2000 and moves together with the moving frame 2000 , and the first coil 3130 may be a fixed member fixed to the fixed frame 1000 .

[0336] When power is applied to the first coil 3130 , the moving frame 2000 may move in a first axis (eg, X-axis) direction by an electromagnetic force between the first magnet 3110 and the first coil 3130 .

[0337] The first magnet 3110 and the first coil 3130 can generate a driving force in a direction (eg, a first axis (eg, X-axis) direction) perpendicular to the direction in which they face each other (optical axis direction).

[0338] The second sub driver 3300 may include a second magnet 3310 and a second coil 3330. The second magnet 3310 and the second coil 3330 may be disposed to face each other in an optical axis (eg, Z-axis) direction.

[0339] The second magnet 3310 may be provided on the mobile frame 2000. The second magnet 3310 may include a plurality of magnets. For example, the second magnet 3310 may include two magnets, and the two magnets may be provided to be spaced apart from each other along the first axis (e.g., X-axis) direction. For example, the second magnet 3310 may include two magnets spaced apart from each other in a direction perpendicular to the direction in which the second magnet 3310 generates a driving force (the second axis (e.g., Y-axis) direction).

[0340] The mounting groove 2200 (see Fig.29 ) may be disposed in the upper surface of the moving frame 2000. By inserting and disposing the second magnet 3310 in the mounting groove 2200, an increase in the overall height of the first actuator 10' and the camera module 1' due to the thickness of the second magnet 3310 may be prevented.

[0341] The second magnet 3310 may be magnetized so that one surface thereof (e.g., the surface thereof facing the second coil 3330) has both an S pole and an N pole. For example, an S pole, a neutral region, and an N pole may be sequentially arranged on one surface of the second magnet 3310 facing the second coil 3330 along the second axis (e.g., the Y axis) direction (see Fig.28 ). The second magnet 3310 may have a shape having a length in a first axis (eg, X-axis) direction.

[0342] The second magnet 3310 may be magnetized so that the other surface thereof (e.g., the surface opposite to the one surface) has both an N pole and an S pole. As an example, the N pole, the neutral region, and the S pole may be sequentially arranged on the other surface of the second magnet 3310 along the second axis (e.g., the Y axis) direction.

[0343] The magnetization directions of the two magnets of the second magnet 3310 may be opposite to each other.

[0344] The second coil 3330 may be disposed to face the second magnet 3310. For example, the second coil 3330 may be disposed to face the second magnet 3310 in the optical axis (eg, Z-axis) direction.

[0345] The second coil 3330 may have a ring shape with a hollow portion and may have a shape having a length in the first axis (eg, X axis) direction. The second coil 3330 may include coils whose number corresponds to the number of magnets included in the second magnet 3310.

[0346] The second magnet 3310 may be a moving member that is mounted on the moving frame 2000 and moves together with the moving frame 2000 , and the second coil 3330 may be a fixed member fixed to the fixed frame 1000 .

[0347] When power is applied to the second coil 3330 , the moving frame 2000 may move in the second axis (eg, Y axis) direction by an electromagnetic force between the second magnet 3310 and the second coil 3330 .

[0348] The second magnet 3310 and the second coil 3330 can generate a driving force in a direction (eg, a second axis (eg, Y-axis) direction) perpendicular to the direction in which they face each other (optical axis direction).

[0349] Meanwhile, the moving frame 2000 may be rotated by the first sub driver 3100 and the second sub driver 3300 .

[0350] For example, torque may be generated by controlling the driving force of the first sub-driver 3100 and the driving force of the second sub-driver 3300 , and thus, the moving frame 2000 may be rotated.

[0351] The first magnet 3110 and the second magnet 3310 can be arranged perpendicularly to each other on a plane perpendicular to the optical axis (e.g., the Z axis), and the first coil 3130 and the second coil 3330 can also be arranged perpendicularly to each other on a plane perpendicular to the optical axis (e.g., the Z axis).

[0352] The first ball member B1 may be disposed between the fixed frame 1000 and the moving frame 2000 .

[0353] The first ball member B1 may be disposed to contact each of the fixed frame 1000 and the moving frame 2000 .

[0354] The first ball member B1 may guide the movement of the moving frame 2000 during the optical image stabilization process. In addition, the first ball member B1 may also be used to maintain a gap between the fixed frame 1000 and the moving frame 2000.

[0355] When a driving force in the first axis (eg, X axis) direction is generated, the first ball member B1 may move in a rolling motion in the first axis (eg, X axis) direction. Therefore, the first ball member B1 may guide the movement of the moving frame 2000 in the first axis (eg, X axis) direction.

[0356] In addition, when a driving force in the second axis (e.g., Y axis) direction is generated, the first ball member B1 can move in a rolling motion in the second axis (e.g., Y axis) direction. Therefore, the first ball member B1 can guide the movement of the moving frame 2000 in the second axis (e.g., Y axis) direction.

[0357] The first ball member B1 may include a plurality of balls disposed between the fixed frame 1000 and the moving frame 2000 .

[0358] Reference Fig.24 and Fig.29 The guide groove in which the first ball member B1 is provided may be provided in at least one of the surfaces facing each other in the optical axis (eg, Z axis) direction of the fixed frame 1000 and the moving frame 2000. A plurality of guide grooves may be provided to correspond to the plurality of balls of the first ball member B1.

[0359] For example, the first guide groove 1700 may be provided in the lower surface of the fixed frame 1000 , and the second guide groove 2100 may be provided in the upper surface of the moving frame 2000 .

[0360] The first ball member B1 may be disposed in the first guide groove 1700 and the second guide groove 2100 to be fitted between the fixed frame 1000 and the moving frame 2000 .

[0361] Each of the first guide groove 1700 and the second guide groove 2100 may have a polygonal or circular shape in a plan view. The size of the first guide groove 1700 and the second guide groove 2100 may be larger than the diameter of the first ball member B1. For example, the cross-section of the first guide groove 1700 and the second guide groove 2100 on a plane perpendicular to the optical axis (e.g., Z axis) may have a size larger than the diameter of the first ball member B1.

[0362] The first guide groove 1700 and the second guide groove 2100 are not limited to a specific shape as long as the size of the first guide groove 1700 and the second guide groove 2100 is larger than the diameter of the first ball member B1.

[0363] Therefore, in a state where the first ball member B1 is accommodated in the first guide groove 1700 and the second guide groove 2100 , the first ball member B1 may move in a rolling motion in a direction perpendicular to the optical axis (eg, the Z axis).

[0364] Meanwhile, a portion of the reinforcing plate 2500 may be exposed to the outside through the upper surface of the moving frame 2000. The reinforcing plate 2500 exposed to the outside may form the bottom surface of the second guide groove 2100. Therefore, the first ball member B1 may contact the reinforcing plate 2500 and roll relative to the reinforcing plate 2500.

[0365] When a driving force is generated in a first axis (eg, X-axis) direction, the moving frame 2000 may move in the first axis (eg, X-axis) direction.

[0366] In addition, when a driving force is generated in the second axis (eg, Y axis) direction, the moving frame 2000 may move in the second axis (eg, Y axis) direction.

[0367] Furthermore, the moving frame 2000 may be rotated by generating a deviation between the magnitude of the driving force in the first axis (eg, X-axis) direction and the magnitude of the driving force in the second axis (eg, Y-axis) direction.

[0368] Since a portion of the sensor substrate 4000 is coupled to the moving frame 2000 and the image sensor S is disposed on the sensor substrate 4000 , when the moving frame 2000 moves or rotates, the image sensor S may also move or rotate.

[0369] At the same time, refer to Fig.21 , a protrusion portion 2400 protruding toward the sensor substrate 4000 may be provided on the moving frame 2000. For example, the protrusion portion 2400 may be provided on the lower surface of the moving frame 2000 and may be coupled to the moving portion 4100 (see FIG. 4 ) of the sensor substrate 4000. Fig. 30A ). Therefore, a gap may be formed between the body of the moving frame 2000 and the sensor substrate 4000 in the optical axis (eg, Z axis) direction, and thus, interference between the moving frame 2000 and the sensor substrate 4000 may be prevented when the moving frame 2000 moves on the XY plane.

[0370] exist Fig.21 It has been illustrated that the protrusion portion 2400 is provided on the lower surface of the moving frame 2000 , but this is merely an example, and the protrusion portion 2400 may also be provided on the upper surface of the sensor substrate 4000 .

[0371] The first actuator 10 ′ may detect the position of the moving frame 2000 in a direction perpendicular to the optical axis (eg, the Z axis).

[0372] To this end, a first position sensor 3150 and a second position sensor 3350 (see Fig.28 ). The first position sensor 3150 may be disposed on the fixed frame 1000 to face the first magnet 3110, and the second position sensor 3350 may be disposed on the fixed frame 1000 to face the second magnet 3310. The first position sensor 3150 and the second position sensor 3350 may be Hall sensors.

[0373] Here, reference Fig.28In the embodiment shown, the second position sensor 3350 may include two Hall sensors. For example, the second magnet 3310 may include two magnets spaced apart from each other in a direction (first axis (e.g., X axis) direction) perpendicular to the direction (second axis (e.g., Y axis) direction) in which the second magnet 3310 generates a driving force, and the second position sensor 3350 may include two Hall sensors disposed to face the two magnets.

[0374] Whether the moving frame 2000 rotates may be detected by two hall sensors facing the second magnet 3310 .

[0375] At the same time, torque can be intentionally generated by using the combined force of the first sub-driver 3100 and the second sub-driver 3300, or by using two magnets and two coils included in the second sub-driver 3300 to create a deviation between the driving force of the first sub-driver 3100 and the driving force of the second sub-driver 3300.

[0376] Since the first guide groove 1700 and the second guide groove 2100 have a polygonal or circular shape larger than the diameter of the first ball member B1 in a plan view, the first ball member B1 disposed between the first guide groove 1700 and the second guide groove 2100 can move unrestrictedly in a rolling motion in a direction perpendicular to the optical axis (e.g., the Z axis).

[0377] Therefore, in a state where the moving frame 2000 is supported by the first ball member B1 , the moving frame 2000 can rotate about the Z axis.

[0378] Furthermore, when the rotation of the moving frame 2000 is not desired and the linear movement of the moving frame 2000 is desired, the driving force of the first sub driver 3100 and / or the driving force of the second sub driver 3300 may be controlled to counteract the torque that is unexpectedly generated.

[0379] Reference Figure 23 to Figure 27 , the fixed frame 1000 may include a wiring pattern 1100 therein, and the wiring pattern 1100 may be connected to the first coil 3130 and the second coil 3330. In addition, the wiring pattern 1100 of the fixed frame 1000 may also be connected to the sensor substrate 4000. Therefore, the first coil 3130 and the second coil 3330 may receive power through the wiring pattern 1100 provided in the fixed frame 1000.

[0380] That is, according to another one or more embodiments of the present disclosure, the camera module 1' does not include a separate printed circuit board for supplying power to the first driver 3000, and can be configured to supply power to the first driver 3000 by including a wiring pattern 1100 provided in the fixing frame 1000 itself.

[0381] Reference Fig.26 The wiring pattern 1100 may be integrally coupled with the fixing frame 1000 by insert molding. For example, the wiring pattern 1100 may be manufactured to be integral with the fixing frame 1000 by injecting a resin material into a mold in a state where the wiring pattern 1100 is disposed in the mold.

[0382] The camera module 1 ′ according to another one or more embodiments of the present disclosure may be subjected to at least two injection moldings in the process of manufacturing the fixing frame 1000 .

[0383] When the pattern width of the wiring pattern 1100 is significantly reduced to reduce the size of the wiring pattern 1100 , the rigidity of the wiring pattern 1100 may be insufficient, making it difficult to fix the position of the wiring pattern 1100 during insert molding.

[0384] Therefore, the fixed frame 1000 having the wiring pattern 1100 therein can be manufactured by: manufacturing a primary injection molded product (e.g., the first frame 1400) that is integrated with the wiring pattern 1100 by insert injection molding, and then performing insert injection molding on the primary injection molded product to manufacture a secondary injection molded product (e.g., the second frame 1500) that is integrated with the primary injection molded product.

[0385] Since the injection molding is performed at least twice, a boundary line BL may be formed between the first frame 1400 (primary injection product) and the second frame 1500 (secondary injection product).

[0386] The first coil 3130, the second coil 3330, the first position sensor 3150, and the second position sensor 3350 may be disposed on the first frame 1400 as a primary injection product. The first coil 3130, the second coil 3330, the first position sensor 3150, and the second position sensor 3350 may be connected to the wiring pattern 1100 included in the first frame 1400.

[0387] exist Fig.26 In the embodiment, it has been shown that the first position sensor 3150 and the second position sensor 3350 and the first coil 3130 and the second coil 3330 are disposed on the first frame 1400 after primary injection molding, and then secondary injection molding is performed. However, the present disclosure is not limited thereto, and the first coil 3130 and the second coil 3330 may be disposed on the first frame 1400 after secondary injection molding. In addition, the first position sensor 3150 and the second position sensor 3350 may also be disposed on the first frame 1400 after secondary injection molding.

[0388] The wiring pattern 1100 may include a wiring portion 1110 and a terminal portion 1120, the wiring portion 1110 may be located inside the first frame 1400, and the terminal portion 1120 may be provided to be exposed outside the first frame 1400. In addition, the terminal portion 1120 may also be provided to be exposed outside the second frame 1500. The terminal portion 1120 of the wiring pattern 1100 may be connected to the sensor substrate 4000, and thus power may be applied to the first coil 3130 and the second coil 3330 through the wiring pattern 1100.

[0389] Meanwhile, the first guide groove 1700 in which the first ball member B1 is disposed may be formed in the first frame 1400. Since the material of the first ball member B1 may be ceramic and the material of the first frame 1400 is plastic, there may be a risk of damaging the first guide groove 1700 due to a difference in rigidity between the first ball member B1 and the first frame 1400.

[0390] Therefore, the support pad 1200 may be disposed on the bottom surface of the first guide groove 1700 to prevent damage to the first guide groove 1700. Such a support pad 1200 may be insert-molded like the wiring pattern 1100 during the primary injection process to be integrated with the first frame 1400. The support pad 1200 may be formed of a rustproof material.

[0391] A portion of the support pad 1200 may be disposed inside the first frame 1400 , and another portion of the support pad 1200 may be disposed to be exposed outside the first frame 1400 .

[0392] The support pad 1200 exposed to the outside of the first frame 1400 may form a bottom surface of the first guide groove 1700. Therefore, the first ball member B1 may contact the support pad 1200 and roll relative to the support pad 1200.

[0393] The yoke part 1300 may be disposed inside the fixed frame 1000. The yoke part 1300 may provide an attractive force so that the fixed frame 1000 and the moving frame 2000 may be maintained in a state where the fixed frame 1000 and the moving frame 2000 are in contact with the first ball member B1.

[0394] The yoke portion 1300 may be insert-molded like the wiring pattern 1100 during the primary molding process to be integrated with the first frame 1400 .

[0395] The yoke portion 1300 may be arranged to face the first magnet 3110 and the second magnet 3310 in the optical axis (e.g., Z axis) direction. The yoke portion 1300 may include a plurality of yokes. For example, the yoke portion 1300 may include two yokes facing the two magnets included in the second magnet 3310 and two yokes facing the two groups of magnets of the first magnet 3110.

[0396] The number of yokes included in the yoke part 1300 is not particularly limited, but the center point of the attraction acting between the first magnet 3110 and the second magnet 3310 and the yoke part 1300 needs to be located in a supporting area obtained by connecting a plurality of balls included in the first ball member B1 to each other.

[0397] Attractive forces may act between the yoke portion 1300 and the first magnet 3110 and between the yoke portion 1300 and the second magnet 3310 , respectively, in the direction of the optical axis (eg, Z-axis).

[0398] Therefore, the moving frame 2000 may be pressed toward the fixed frame 1000 , and the fixed frame 1000 and the moving frame 2000 may thus be maintained in a state where they are in contact with the first ball member B1 .

[0399] The yoke part 1300 may be formed of a material capable of generating an attractive force between the yoke part 1300 and the first and second magnets 3110 and 3310. As an example, the yoke part 1300 may be formed of a magnetic material.

[0400] Meanwhile, the fixing frame 1000 may further include a shielding cover 1600. Fig.23 After performing secondary injection molding in the process of manufacturing the fixing frame 1000, the shielding cover 1600 may be coupled to the second frame 1500 as a secondary injection molding product to cover at least a portion of the upper and side surfaces of the second frame 1500. The shielding cover 1600 may be used to shield electromagnetic waves.

[0401] Reference Fig. 30A and Fig. 30B , the sensor substrate 4000 may include a moving portion 4100, a fixing portion 4300, and a connecting portion 4500. The sensor substrate 4000 may be a rigid flexible printed circuit board (RFPCB).

[0402] The image sensor S may be mounted on the moving part 4100. The moving part 4100 may be coupled to the lower surface of the moving frame 2000. For example, the area of ​​the moving part 4100 may be larger than the area of ​​the image sensor S, and the moving part 4100 outside the image sensor S may be coupled to the lower surface of the moving frame 2000.

[0403] The moving part 4100 may be a moving member that moves together with the moving frame 2000 during optical image stabilization. The moving part 4100 may be a rigid PCB.

[0404] The fixing portion 4300 may be coupled to the lower surface of the fixing frame 1000. The fixing portion 4300 may be a fixing member that does not move during optical image stabilization. The fixing portion 4300 may be a rigid PCB.

[0405] The connection part 4500 may be disposed between the moving part 4100 and the fixed part 4300, and may connect the moving part 4100 and the fixed part 4300 to each other. The connection part 4500 may be a flexible PCB. When the moving part 4100 moves, the connection part 4500 disposed between the moving part 4100 and the fixed part 4300 may be bent.

[0406] The connecting portion 4500 may extend along the circumference of the moving portion 4100. The connecting portion 4500 may be provided with a plurality of slits passing through the connecting portion 4500 in the optical axis direction. The plurality of slits may be provided at intervals between the moving portion 4100 and the fixed portion 4300. Therefore, the connecting portion 4500 may include a plurality of bridge portions 4550 spaced apart from each other by the plurality of slits. The plurality of bridge portions 4550 may extend along the circumference of the moving portion 4100.

[0407] The connection part 4500 may include a first supporting part 4510 and a second supporting part 4530. The connection part 4500 may be connected to the fixed part 4300 through the first supporting part 4510. In addition, the connection part 4500 may be connected to the moving part 4100 through the second supporting part 4530.

[0408] For example, the first supporting portion 4510 may contact and be connected to the fixed portion 4300 and may be spaced apart from the moving portion 4100. In addition, the second supporting portion 4530 may contact and be connected to the moving portion 4100 and may be spaced apart from the fixed portion 4300.

[0409] For example, the first supporting portion 4510 may extend in a first axial direction (e.g., X-axis direction) to connect the plurality of bridge portions 4550 of the connecting portion 4500 and the fixing portion 4300 to each other. In another embodiment, the first supporting portion 4510 may include two supporting portions disposed on opposite sides to each other in the first axial direction (e.g., X-axis direction).

[0410] The second supporting portion 4530 may extend in the second axis direction (e.g., the Y axis direction) to connect the plurality of bridge portions 4550 of the connecting portion 4500 and the moving portion 4100 to each other. In another embodiment, the second supporting portion 4530 may include two supporting portions disposed on opposite sides to each other in the second axis direction (e.g., the Y axis direction).

[0411] Therefore, in a state where the moving portion 4100 is supported by the connecting portion 4500 , the moving portion 4100 can move in a direction perpendicular to the optical axis (eg, Z axis) or rotate relative to the optical axis (eg, Z axis).

[0412] In another embodiment, when the image sensor S moves in a first axis direction (e.g., X axis direction), the plurality of bridge portions 4550 connected to the first support portion 4510 may be bent. In addition, when the image sensor S moves in a second axis direction (e.g., Y axis direction), the plurality of bridge portions 4550 connected to the second support portion 4530 may be bent. In addition, when the image sensor S rotates, the plurality of bridge portions 4550 connected to the first support portion 4510 and the plurality of bridge portions 4550 connected to the second support portion 4530 may be bent together.

[0413] In another embodiment, the length of the fixing portion 4300 in the first axis (e.g., X axis) direction and the length of the fixing portion 4300 in the second axis (e.g., Y axis) direction may be different. For example, the length of the fixing portion 4300 in the second axis (e.g., Y axis) direction may be greater than the length of the fixing portion 4300 in the first axis (e.g., X axis) direction. In another embodiment, the sensor substrate 4000 may have a quadrilateral shape as a whole.

[0414] In the sensor substrate 4000 having such a shape, when the length of the first supporting portion 4510 and the length of the second supporting portion 4530 are the same as each other, the load applied to the multiple bridge portions 4550 connected to the first supporting portion 4510 and the load applied to the multiple bridge portions 4550 connected to the second supporting portion 4530 may be different, and therefore, it may be difficult to control the drive.

[0415] Therefore, by making the length of the first supporting portion 4510 and the length of the second supporting portion 4530 different, the lengths of the multiple bridge portions 4550 extending from the first supporting portion 4510 in the second axis direction (e.g., the Y axis) and the lengths of the multiple bridge portions 4550 extending from the second supporting portion 4530 in the first axis direction (e.g., the X axis) can be made approximately the same as each other.

[0416] Here, the length of the first supporting portion 4510 may refer to the length of the first supporting portion 4510 in the second axis (e.g., Y-axis) direction, and the length of the second supporting portion 4530 may refer to the length of the second supporting portion 4530 in the first axis (e.g., X-axis) direction.

[0417] An integrated driver circuit (IC) C3 for controlling driving of the first driver 3000 may be disposed on the sensor substrate 4000. The driver IC C3 may be disposed on the connection substrate C2, and the connection substrate C2 may be connected to the fixed portion 4300 through a flexible PCB.

[0418] The driver IC C3 may be fixed to the upper surface of the fixing frame 1000 (e.g., the upper surface of the shield case 1600). That is, since the flexible circuit board can be bent, the connection substrate C2 on which the driver IC C3 is disposed may be disposed on the upper surface of the fixing frame 1000. Therefore, there is no need to ensure a separate installation space, and thus the overall size of the camera module 1' may be reduced.

[0419] In addition, a first connector C1 for connecting to an external power source (eg, a mobile electronic device on which the camera module 1 ′ is mounted) may be provided to extend from the fixed portion 4300 of the sensor substrate 4000 .

[0420] At the same time, refer to Fig.21 and Fig. 22 , the base 5000 may be coupled to a lower portion of the sensor substrate 4000 .

[0421] The base 5000 may be coupled to the sensor substrate 4000 to cover a lower portion of the sensor substrate 4000. The base 5000 may prevent foreign matter or the like from being introduced through a gap between the moving portion 4100 and the fixed portion 4300 of the sensor substrate 4000.

[0422] The heat dissipation film 5100 may be disposed below the base 5000. Such a heat dissipation film 5100 may cover the lower portion of the base 5000 and the side surface of the first actuator 10'.

[0423] As an example, the heat dissipation film 5100 may cover the lower surface of the base 5000 , and if necessary, may also cover at least one of the side surface of the sensor substrate 4000 and the side surface of the fixing frame 1000 .

[0424] Therefore, the heat generated from the image sensor S can be effectively dissipated.

[0425] Reference Fig.29, the moving frame 2000 may be installed with an infrared cut filter IRCF, and a distance from the infrared cut filter IRCF to one side surface of the moving frame 2000 in one direction may be different from a distance from the infrared cut filter IRCF to another side surface of the moving frame 2000 in another direction.

[0426] Here, one side surface and the other side surface of the moving frame 2000 may refer to surfaces disposed on opposite sides to each other, and one direction and the other direction may refer to opposite directions.

[0427] For example, a distance from the infrared cut filter IRCF to one side surface of the moving frame 2000 in the +Y axis direction may be greater than a distance from the infrared cut filter IRCF to the other side surface of the moving frame 2000 in the −Y axis direction.

[0428] Therefore, in a state where the moving frame 2000 is coupled to the sensor substrate 4000 , any one of the two second supporting portions 4530 and a plurality of bridge portions 4550 connected to any one of the two second supporting portions 4530 may be exposed in the optical axis (eg, Z-axis) direction.

[0429] This can ensure a space for disposing the second actuator 20 ′.

[0430] Since the moving frame 2000 has this form, an escape hole 2600 can be formed in the moving frame 2000, which is consistent with the above reference Figures 10 to 12 The mobile frame 200 is different.

[0431] Reference Figure 32 to Figure 34 The second actuator 20 ′ is described.

[0432] Reference Fig.32 The second actuator 20 ′ may include a bearing portion 7300 , a housing 6000 , and a second driver 8000 , and may further include a casing 6300 .

[0433] The carrier 7300 may be provided with a hollow portion passing through the carrier 7300 in the optical axis (e.g., Z axis) direction, and the lens barrel 7100 may be inserted into the hollow portion and fixedly disposed relative to the carrier 7300. Therefore, the lens barrel 7100 and the carrier 7300 may move together in the optical axis (e.g., Z axis) direction.

[0434] The housing 6000 may have an inner space and may have a quadrangular box shape with its top and bottom opened. The carrier 7300 may be disposed in the inner space of the housing 6000 .

[0435] The housing 6300 may be coupled to the case 6000 to protect internal components of the second actuator 20 ′.

[0436] The housing 6300 may be provided with a protruding portion 6310 protruding toward a second ball member B2 to be described later. The protruding portion 6310 may function as a stopper and a buffer for limiting the range of motion of the second ball member B2.

[0437] The second driver 8000 may generate a driving force in the optical axis (eg, Z-axis) direction to move the carrier 7300 in the optical axis (eg, Z-axis) direction.

[0438] The second driver 8000 may include a third magnet 8100 and a third coil 8300. The third magnet 8100 and the third coil 8300 may be disposed to face each other in a direction perpendicular to the optical axis (eg, Z axis).

[0439] The third magnet 8100 may be disposed on the carrier 7300. For example, the third magnet 8100 may be disposed on one side surface of the carrier 7300.

[0440] One side surface of the bearing portion 7300 may protrude further in the optical axis (e.g., Z axis) direction than other portions of the bearing portion 7300. For example, the bearing portion 7300 may include a first guide portion 7310 protruding in the optical axis (e.g., Z axis) direction, and the third magnet 8100 may be disposed on the first guide portion 7310. Therefore, by reducing the height of other portions of the bearing portion 7300 while fixing the second driver 8000 installation space to fix the driving force, the height of the second actuator 20' may be reduced.

[0441] The back yoke may be disposed between the bearing portion 7300 and the third magnet 8100. The back yoke may improve driving force by preventing magnetic flux of the third magnet 8100 from leaking.

[0442] The third magnet 8100 may be magnetized so that one surface thereof (e.g., the surface thereof facing the third coil 8300) has both an N pole and an S pole. For example, an N pole, a neutral region, and an S pole may be sequentially arranged on one surface of the third magnet 8100 facing the third coil 8300 along the optical axis (e.g., Z axis) direction.

[0443] The third magnet 8100 may be magnetized so that the other surface thereof (e.g., the surface opposite to the one surface) has both an S pole and an N pole. As an example, the S pole, the neutral region, and the N pole may be sequentially arranged on the other surface of the third magnet 8100 along the optical axis (e.g., the Z axis) direction.

[0444] The third coil 8300 may be disposed to face the third magnet 8100. For example, the third coil 8300 may be disposed to face the third magnet 8100 in a direction perpendicular to the optical axis (eg, Z axis).

[0445] The third coil 8300 may be disposed on the substrate 8900 , and the substrate 8900 may be mounted on the housing 6000 such that the third magnet 8100 and the third coil 8300 face each other in a direction perpendicular to the optical axis (eg, the Z axis).

[0446] One side surface of the housing 6000 may protrude further in the optical axis (e.g., Z axis) direction than other portions of the housing 6000. For example, the housing 6000 may include a second guide portion 6330 protruding in the optical axis (e.g., Z axis) direction, and the substrate 8900 may be disposed on the second guide portion 6330.

[0447] In addition, if Fig.34 As shown, the second guide portion 6330 may have an accommodation space 6350 for accommodating the first guide portion 7310 .

[0448] Therefore, the height of the second actuator 20 ′ may be reduced by reducing the height of other portions of the housing 6000 while fixing the installation space of the second driver 8000 in order to fix the driving force.

[0449] The third magnet 8100 may be a movable member mounted on the carrier 7300 and moving in the optical axis (eg, Z-axis) direction together with the carrier 7300 , and the third coil 8300 may be a fixed member fixed to the substrate 8900 .

[0450] When power is applied to the third coil 8300 , the carrier 7300 may move in the optical axis (eg, Z-axis) direction by the electromagnetic force between the third magnet 8100 and the third coil 8300 .

[0451] Since the lens barrel 7100 is disposed in the carrying portion 7300 , the lens barrel 7100 may also move in the optical axis (eg, Z-axis) direction through the movement of the carrying portion 7300 .

[0452] The second ball member B2 may be disposed between the bearing portion 7300 and the housing 6000. For example, the second ball member B2 may be disposed between the first guide portion 7310 of the bearing portion 7300 and the second guide portion 6330 of the housing 6000. The second ball member B2 may include a plurality of balls disposed along the optical axis (e.g., Z axis). When the bearing portion 7300 moves in the direction of the optical axis (e.g., Z axis), the plurality of balls may move in a rolling motion in the direction of the optical axis (e.g., Z axis).

[0453] The yoke 8700 may be provided on the housing 6000. The yoke 8700 may be provided at a position facing the third magnet 8100. For example, the third coil 8300 may be provided on one surface of the substrate 8900, and the yoke 8700 may be provided on the other surface of the substrate 8900.

[0454] The third magnet 8100 and the yoke 8700 may generate an attractive force therebetween. For example, the attractive force may act between the third magnet 8100 and the yoke 8700 in a direction perpendicular to the optical axis (eg, Z axis).

[0455] Due to the attractive force of the third magnet 8100 and the yoke 8700 , the second ball member B2 may come into contact with each of the bearing portion 7300 and the housing 6000 .

[0456] The guide grooves may be provided in the surfaces facing each other of the bearing portion 7300 and the housing 6000. For example, the third guide groove 7311 may be provided in the first guide portion 7310 of the bearing portion 7300, and the fourth guide groove 6100 may be provided in the second guide portion 6330 of the housing 6000.

[0457] The third guide groove 7311 and the fourth guide groove 6100 may extend in the optical axis (eg, Z axis) direction. The second ball member B2 may be disposed between the third guide groove 7311 and the fourth guide groove 6100.

[0458] Since the first guide portion 7310 of the bearing portion 7300 and the second guide portion 6330 of the housing 6000 have shapes that protrude in the direction of the optical axis (e.g., the Z axis), an escape area can be set in the fixed frame 1000 and the movable frame 2000 of the first actuator 10' to ensure installation space for the first guide portion 7310 and the second guide portion 6330.

[0459] That is to say, Fig.23 As shown, the step portion 1510 may be provided on one side of the fixing frame 1000, and as shown in FIG. Fig.31 As shown, one side of the moving frame 2000 may be shorter than the other side of the moving frame 2000 to expose a portion of the sensor substrate 4000, and thus, a mounting space for the first guide portion 7310 and the second guide portion 6330 may be fixed by this structure.

[0460] Therefore, even when the first guide portion 7310 of the carrier 7300 and the second guide portion 6330 of the housing 6000 have a shape in which they protrude in the optical axis (e.g., Z-axis) direction at the second actuator 20', the protruding portion can be set in the first actuator 10', and thus, the overall height of the camera module 1' can be not increased.

[0461] At the same time, the second actuator 20 ′ may sense the position of the carrier 7300 in the direction of the optical axis (eg, the Z axis).

[0462] For this purpose, a third position sensor 8500 (see Fig.32 ). The third position sensor 8500 may be disposed on the substrate 8900 to face the third magnet 8100. The third position sensor 8500 may be a Hall sensor.

[0463] At the same time, reference Figures 13 to 19 The described configurations of the main guides, auxiliary guides, the number of second ball members B2, the supporting areas, etc. may also be applied to the camera module 1 ′ according to another one or more embodiments of the present disclosure.

[0464] According to another one or more embodiments of the present disclosure, the camera module 1' can be configured so that the lens module 7000 moves in the direction of the optical axis (e.g., the Z axis) during autofocusing, and can be configured so that the image sensor S moves in a direction perpendicular to the optical axis (e.g., the Z axis) during optical image stabilization.

[0465] Therefore, even if the lens module 7000 moves in the optical axis (eg, Z-axis) direction when focusing, the relative positions of the magnet and the coil of the first driver 3000 do not change, and thus, the driving force for optical image stabilization can be accurately controlled.

[0466] Furthermore, even if the image sensor S moves in a direction perpendicular to the optical axis during optical image stabilization, the relative positions of the magnet and the coil of the second driver 8000 do not change, and therefore, the driving force for focusing can be accurately controlled.

[0467] As described above, according to one or more embodiments of the present disclosure, an actuator for optical image stabilization and a camera module including the actuator may improve optical image stabilization performance.

[0468] Although the present disclosure includes specific examples, it will be apparent after understanding the disclosure of the present application 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 herein are understood in a descriptive sense only, and not for limiting purposes. The description of the features or aspects in each example should be considered to be applicable to similar features or aspects in other examples. If the described techniques are performed in a different order, and / or if the components in the described system, architecture, device or circuit are replaced or supplemented in a different manner and / or by other components or their equivalents, appropriate results can still be achieved. Therefore, the scope of the present disclosure is not limited by specific embodiments, but by the claims and their equivalents, and all variations within the scope of the claims and their equivalents should be understood to be included in the present disclosure.

Claims

1. An actuator for optical image stabilization, comprising: First frame; a second frame, arranged to be movable relative to the first frame in a direction perpendicular to the optical axis; a ball member disposed between the first frame and the second frame; a first sub-driver comprising a first magnet disposed on the second frame and a first coil disposed to face the first magnet; a second sub-driver including a second magnet disposed on the second frame and a second coil disposed to face the second magnet; a magnetic body, arranged to face the first magnet and the second magnet in the optical axis direction; as well as A sensor substrate includes a moving portion on which an image sensor is disposed, and is fixed to the second frame.

2. The actuator according to claim 1, wherein: The second frame has a rectangular plate shape whose center is penetrated in the optical axis direction, and The first magnet is disposed on one side of the second frame, and the second magnet is disposed on the other side of the second frame.

3. The actuator according to claim 1, wherein: The first magnet and the second magnet are arranged perpendicularly to each other in a plane perpendicular to the optical axis.

4. The actuator according to claim 1, wherein: The first frame is provided with a plurality of through holes passing through the first frame, and The first coil and the second coil are disposed in the plurality of through holes.

5. The actuator according to claim 1, wherein: A first substrate is disposed on the first frame, and the first coil and the second coil are disposed on one surface of the first substrate.

6. The actuator according to claim 1, further comprising: a first position sensor, arranged to face the first magnet; and a second position sensor disposed to face the second magnet.

7. The actuator according to claim 1, wherein: The magnetic body includes a first yoke facing the first magnet and a second yoke facing the second magnet.

8. The actuator according to claim 1, wherein: Each of the first magnet and the second magnet has an N pole, a neutral region, and an S pole sequentially disposed along a direction in which a driving force is generated.

9. The actuator according to claim 1, wherein: The sensor substrate includes a fixed portion spaced apart from the moving portion and a connecting portion connecting the moving portion and the fixed portion.

10. The actuator according to claim 9, wherein: The connecting portion extends along a circumference of the moving portion.

11. The actuator according to claim 9, wherein: The connecting portion includes a first supporting portion and a second supporting portion, The first supporting portion has one side connected to the moving portion and the other side spaced apart from the fixed portion, and The second supporting portion has one side connected to the fixed portion and the other side spaced apart from the moving portion.

12. The actuator according to claim 1, wherein: The optical axis direction is parallel to a direction perpendicular to the imaging surface of the image sensor.

Images