KR102642007B1 - camera device and optical apparatus - Google Patents

Abstract

This embodiment includes a mover including a first magnet; A lens coupled to the mover; a stator including a first coil facing the first magnet and disposed on one side of the mover; a first substrate disposed on one side of the stator; a second substrate movably disposed on the first substrate; an image sensor disposed on the second substrate; a second coil disposed on the first substrate; and a second magnet disposed on the second substrate and facing the second coil, wherein the second substrate includes a coupling portion coupled to the image sensor, and at least a portion extending outward from the coupling portion. It relates to a camera device including an extension portion overlapping a first substrate in an optical axis direction, and further comprising a ball disposed between the extension portions of the first substrate and the second substrate.

Description

Camera device and optical apparatus

This embodiment relates to camera devices and optical devices.

The content described below only provides background information for this embodiment and does not describe prior art.

As various types of portable terminals become widespread and wireless Internet services become commercialized, consumer demands related to portable terminals are also diversifying, and various types of additional devices are being installed on portable terminals.

Among them, a representative example is a camera device that takes photos or videos of a subject. Meanwhile, recent camera devices are equipped with an image stabilization function that prevents images from shaking due to camera shake.

Meanwhile, a method using lens shift is being developed as a method of performing the image stabilization function, but in the case of the lens shift model, there is a problem in that the length in the x-axis/y-axis direction of the camera device increases by the stroke length of the lens.

(Patent Document 1) KR 10-2018-0047724 A

This embodiment seeks to provide a camera device that performs an image stabilization function through image sensor shift.

Furthermore, the aim is to provide a camera device that performs a more precise image stabilization function by synchronizing image sensor shift and lens shift.

Additionally, it is intended to provide an optical device including the camera device.

The camera device according to this embodiment includes a mover including a first magnet; A lens coupled to the mover; a stator including a first coil facing the first magnet and disposed on one side of the mover; a first substrate disposed on one side of the stator; a second substrate movably disposed on the first substrate; an image sensor disposed on the second substrate; a second coil disposed on the first substrate; and a second magnet disposed on the second substrate and facing the second coil, wherein the second substrate includes a coupling portion coupled to the image sensor, and at least a portion extending outward from the coupling portion. It may include an extension portion that overlaps the first substrate in the optical axis direction, and may further include a ball disposed between the extension portions of the first substrate and the second substrate.

The second substrate is a rigid substrate and may include a flexible third substrate that electrically connects the first substrate and the second substrate.

The first substrate may include a groove formed on an upper surface of the first substrate, and the ball may be placed in the groove of the first substrate.

The first substrate includes a hole, the image sensor is disposed in the hole of the first substrate, the second coil overlaps the ball in the optical axis direction, and the second magnet is located on the upper surface of the second substrate. and may overlap with the second coil in the optical axis direction.

The ball may be disposed between the groove of the first substrate and the extension portion of the second substrate.

The extension portion of the second substrate includes a first extension portion disposed in a first axis direction with respect to the image sensor, and a second extension portion disposed in a second axis direction perpendicular to the first axis with respect to the image sensor. The third substrate may be disposed between the first axis and the second axis.

The third substrate may be placed at a corner of the image sensor.

The mover includes a housing; a bobbin disposed within the housing; a third coil disposed on the bobbin; and an elastic member connecting the housing and the bobbin, wherein the first magnet is disposed in the housing and faces the third coil, and the camera device includes a support member connecting the mover and the stator. More may be included.

The optical device according to this embodiment includes a main body; The camera device of claim 1 disposed in the main body; and a display disposed on the main body and outputting images captured by the camera device.

The camera device according to this embodiment includes a housing; a bobbin disposed within the housing; A lens coupled to the bobbin; a base disposed below the housing; a first coil disposed on the bobbin; a first magnet disposed in the housing and facing the first coil; a second coil disposed on the base and facing the first magnet; a first substrate disposed below the base; a second substrate at least partially overlapping the first substrate in the optical axis direction; a ball disposed between the first substrate and the second substrate; an image sensor disposed on the second substrate; a third coil disposed on the first substrate; a second magnet disposed on the image sensor and facing the third coil; and a flexible third substrate electrically connecting the first substrate and the second substrate.

The camera device according to this embodiment includes a mover coupled with a lens; a stator disposed spaced apart from the mover; a first substrate disposed on one side of the stator; a second substrate movably disposed on the first substrate; an image sensor disposed on the second substrate; a second coil disposed on the first substrate; and a second magnet disposed on the second substrate and facing the second coil.

The stator may include a housing and a first magnet disposed in the housing, and the mover may include a bobbin disposed in the housing and a first coil disposed in the bobbin and facing the first magnet.

The movable member includes a housing, a bobbin disposed in the housing, a first coil disposed in the bobbin, and a first magnet disposed in the housing and facing the first coil, and the stator is disposed below the housing. It may include a base disposed, and a third coil disposed on the base and facing the first magnet.

Through this embodiment, a camera shake correction function can be realized through image sensor shift.

Furthermore, a more precise image stabilization function can be provided through synchronization of image sensor shift and lens shift.

1 is a cross-sectional view (conceptual diagram) showing a configuration related to image sensor shift of a camera device according to this embodiment.
Figure 2 is a plan view (conceptual diagram) showing a configuration related to image sensor shift of a camera device according to this embodiment.
Figure 3 is a cross-sectional view (conceptual diagram) showing a configuration related to image sensor shift of a camera device according to a modified example.
Figure 4 is a cross-sectional view (conceptual diagram) showing a configuration related to image sensor shift of a camera device according to another modification.
Figure 5 is a plan view (conceptual diagram) showing a configuration related to image sensor shift of a camera device according to another modified example.
Figure 6 is a perspective view of a lens driving device according to this embodiment.
Figure 7 is a cross-sectional view viewed from XY of Figure 6.
Figure 8 is an exploded perspective view of the lens driving device according to this embodiment.
FIG. 9 is an exploded perspective view of the lens driving device according to this embodiment as seen from a direction different from that of FIG. 8.
Figure 10 is an exploded perspective view showing the first movable and related components according to this embodiment.
Figure 11 is an exploded perspective view showing the second movable device according to this embodiment.
Figure 12 is an exploded perspective view showing a stator according to this embodiment.
Figure 13 is an exploded perspective view showing the elastic member, support member, and related configuration according to this embodiment.
Figure 14 is a plan view showing the lens driving device according to this embodiment with the cover omitted.
Figure 15 is a cross-sectional view of the camera device according to this embodiment.
Figure 16 is a perspective view showing an optical device according to this embodiment.

Hereinafter, for convenience of explanation, some embodiments of the present invention will be described through exemplary drawings. However, the technical idea of the present invention is not limited to some of the described embodiments.

Additionally, in describing the components of the embodiment of the present invention, terms such as first, second, 1-1, 1-2, A, B, (a), and (b) may be used. These terms are only used to distinguish the component from other components, and the nature, sequence, or order of the component is not limited by the term.

When a component is described as being 'connected' or 'coupled' to another component, that component may be directly connected or coupled to that other component, but there is another component between that component and that other component. It should be understood that elements may be 'connected' or 'combined'.

The 'optical axis direction' used below is defined as the direction of the optical axis of the lens coupled to the lens driving device. Accordingly, the 'optical axis direction' may coincide with the direction of the optical axis of the image sensor of the camera module.

The 'autofocus function' used below automatically focuses on the subject by adjusting the distance to the image sensor by moving the lens in the direction of the optical axis according to the distance to the subject so that a clear image of the subject can be obtained on the image sensor. It is defined as a matching function. Meanwhile, 'Auto Focus' can be used interchangeably with 'AF (Auto Focus)'.

The 'image stabilization function' used below is defined as a function that moves or tilts the lens in a direction perpendicular to the optical axis to offset vibration (movement) generated in the image sensor by external force. Meanwhile, 'image stabilization' can be used interchangeably with 'OIS (Optical Image Stabilization)'.

One of the first coil 422, the second coil 40, and the third coil 220 may be referred to as the first coil, the other may be referred to as the second coil, and the remaining one may be referred to as the third coil. One of the first magnet 320 and the second magnet 50 may be referred to as the first magnet, and the other may be referred to as the second magnet.

Hereinafter, the configuration of the optical device according to this embodiment will be described with reference to the drawings.

Figure 16 is a perspective view showing an optical device according to this embodiment.

Optical devices include mobile phones, mobile phones, smart phones, portable communication devices, portable smart devices, digital cameras, laptop computers, digital broadcasting terminals, PDAs (Personal Digital Assistants), PMPs (Portable Multimedia Players), and It can be any one of the navigation options. However, the type of optical device is not limited to this, and any device for taking videos or photos may be included in the optical device.

The optical device may include a body (1). The main body 1 can form the appearance of an optical device. The main body 1 can accommodate the camera device 3. A display 2 may be placed on one side of the main body 1. For example, the display 2 and the camera device 3 may be placed on one side of the main body 1, and the camera device 3 may be additionally placed on the other side of the main body 1 (the side located opposite to the one side). there is.

The optical device may include a display (2). The display 2 may be placed on one side of the main body 1. The display 2 can output an image captured by the camera device 3.

The optical device may include a camera device (3). The camera device 3 may be placed in the main body 1. At least a portion of the camera device 3 may be accommodated inside the main body 1. The camera device 3 may be provided in plural numbers. The camera device 3 may include a dual camera device. The camera device 3 may be disposed on one side of the main body 1 and the other side of the main body 1, respectively. The camera device 3 can capture images of a subject.

Hereinafter, the configuration of the camera device according to this embodiment will be described with reference to the drawings.

FIG. 1 is a cross-sectional view (conceptual diagram) showing a configuration related to an image sensor shift of a camera device according to this embodiment, and FIG. 2 is a plan view (conceptual diagram) showing a configuration related to an image sensor shift of a camera device according to this embodiment. Figure 15 is a cross-sectional view of the camera device according to this embodiment.

The camera device 3 may include an image sensor 10. The image sensor 10 may be placed on one side of the stator 400. The image sensor 10 may be placed below the stator 400. The image sensor 10 may be placed in a position corresponding to the lens. The image sensor 10 may be disposed within the first substrate 20 . The image sensor 10 may be electrically connected to the first substrate 20 . The image sensor 10 may be disposed on the second substrate 30 . The image sensor 10 may be coupled to the second substrate 30 using a flip chip. The image sensor 10 may be coupled to the second substrate 30 by soldering. The image sensor 10 may be arranged so that its optical axis coincides with that of the lens. That is, the optical axis of the image sensor 10 and the optical axis of the lens may be aligned. The image sensor 10 may convert light irradiated to an effective image area of the image sensor 10 into an electrical signal. The image sensor 10 may be one of a charge coupled device (CCD), a metal oxide semiconductor (MOS), a CPD, and a CID.

The camera device 3 may include a first substrate 20 . The first substrate 20 may be a printed circuit board. The first substrate 20 may be a cavity PCB. The first substrate 20 may be a rigid substrate. The first substrate 20 may be a PCB that is hollow or includes holes. A lens driving device may be disposed on the first substrate 20. At this time, the sensor base 15 may be disposed between the first substrate 20 and the lens driving device. The sensor base 15 includes a groove, and the terminal portion 412 of the substrate 410 may be disposed in the groove of the sensor base 15. The first substrate 20 may be placed on one side of the stator 400. The first substrate 20 may be placed below the stator 400 . The first substrate 20 may be electrically connected to the lens driving device. The first substrate 20 may be electrically connected to the image sensor 10. A fourth substrate 80 including a connecting portion 81 connected to the outside may be coupled to the other surface (lower surface) of the first substrate 20.

The first substrate 20 may include a hole 21. The hole 21 of the first substrate 20 may be formed in the center of the first substrate 20. The image sensor 10 may be disposed in the hole 21 of the first substrate 20. The hole 21 of the first substrate 20 may be formed in a shape corresponding to the image sensor 10. However, the size of the hole 21 of the first substrate 20 is larger than the size of the image sensor 10 so that the stroke space of the image sensor 10 can be secured inside the hole 21 of the first substrate 20. It can be formed to a large extent.

The first substrate 20 may include a groove 22 . The groove 22 may be formed on the upper surface of the first substrate 20. The groove 22 can accommodate at least a portion of the ball 70. The groove 22 may be formed with a width corresponding to the diameter of the ball 70 or a width greater than the diameter of the ball 70. Groove 22 may include four grooves spaced apart from each other. A ball 70 may be placed in each of the four grooves. Four grooves may be formed at positions corresponding to the four extension portions 32. The groove 22 may be formed so that the ball 70 placed in the groove 22 does not leave the groove 22.

The camera device 3 may include a second substrate 30 . The second substrate 30 may include a rigid substrate. The second substrate 30 may be movably disposed on the first substrate 20 . The second substrate 30 may be combined with one surface (upper surface) of the image sensor 10. The image sensor 10 may be flip-chip coupled to the second substrate 30. The image sensor 10 may be fixed to the second substrate 30 . The second substrate 30 and the image sensor 10 can be moved as one body. The bond between the second substrate 30 and the image sensor 10 may be using solder balls or Ag epoxy. The second substrate 30 may be hollow or include a hole. An optical path between the image sensor 10 and the lens may be formed through the hollow or hole of the second substrate 30.

The second substrate 30 may include a coupling portion 31. The coupling unit 31 may be coupled to the image sensor 10 . The coupling portion 31 may have a square frame shape. The coupling portion 31 may overlap the image sensor 10 in the optical axis direction. The coupling portion 31 may be disposed on the image sensor 10 .

The second substrate 30 may include an extension portion 32. The extension portion 32 extends outward from the coupling portion 31 so that at least a portion of the extension portion 32 overlaps the first substrate 20 in the optical axis direction. The extension 32 may be supported by the ball 70 . The extension portion 32 may be formed to be rigid.

The extension portion 32 may include a plurality of extension portions. The extension portion 32 may include four extension portions 32 . The extension part 32 includes a first extension part 32-1 disposed in a first axis direction with respect to the image sensor 10, and a second axis direction perpendicular to the first axis with respect to the image sensor 10. It may include a second extension portion 32-2 disposed in . At this time, one of the first and second axes may be the x-axis and the other may be the y-axis. Each of the first extension part 32-1 and the second extension part 32-2 may include two extension parts disposed on opposite sides of each other.

The camera device 3 may include a second coil 40. The second coil 40 may be disposed on the first substrate 20 . The second coil 40 may be disposed on the inner surface of the hole 21 of the first substrate 20. The second coil 40 may be formed as a pattern coil on the first substrate 20. The second coil 40 may be formed integrally with the first substrate 20 as a fine pattern coil. The second coil 40 may overlap the ball 70 in the optical axis direction. Through this structure, the size of the first substrate 20 in the x-axis/y-axis directions can be minimized. When current is applied to the second coil 40, the second coil 40 may interact electromagnetically with the second magnet 50.

The second coil 40 may include a plurality of coils. The second coil 40 is a 2-1 coil 41 disposed in a first axis direction with respect to the image sensor 10, and a second axis direction perpendicular to the first axis with respect to the image sensor 10. It may include a 2-2 coil 42 disposed in. In this embodiment, when current is applied to the 2-1 coil 41, the image sensor 10 moves in the first axis direction, and when current is applied to the 2-2 coil 42, the image sensor 10 ) can move in the second axis direction.

The camera device 3 may include a second magnet 50. The second magnet 50 may be disposed on the second substrate 30 . The second magnet 50 may be placed on the image sensor 10. The second magnet 50 can move integrally with the image sensor 10. The second magnet 50 may be arranged to be spaced apart from the image sensor 10. The second magnet 50 may face the second coil 40. The second magnet 50 may be placed on the outer surface of the image sensor 10. The second magnet 50 may be fixed to the second substrate 30 with an adhesive.

The second magnet 50 may include a 2-1 magnet 51 facing the 2-1 coil 41 and a 2-2 magnet 52 facing the 2-2 coil 42. You can. Each of the 2-1 magnet 51 and the 2-2 magnet 52 may include two magnets.

In this embodiment, the image sensor shifts through the second magnet 50 disposed on the second substrate 30 or the image sensor 10 and the second coil 40 disposed on the first substrate 20. It can be done. That is, when current is applied to the second coil 40, the second magnet 50 moves due to electromagnetic interaction between the second coil 40 and the second magnet 50, and at this time, the second magnet 50 and As the image sensor 10, which moves as one body, also moves, an OIS (image stabilization) function may be performed. The image sensor shift type OIS drive of this embodiment has the advantage of reducing the size of the lens and lens drive device because there is no lens movement compared to the lens shift type OIS drive. In particular, the size may be reduced in the x-axis/y-axis direction. In addition, in the lens shift method, disconnection of the wire to support the movement of the lens may occur, but this problem can be solved in the image sensor shift method.

In this embodiment, OIS may be performed only by shifting the image sensor 10, but a more precise OIS function can be performed by synchronizing the movement of the image sensor 10 and the movement of the lens. That is, the image sensor 10 and the lens can move the same distance in the same direction. When the synchronized shift of the image sensor 10 and the lens is performed according to this embodiment, there is no movement between the image sensor 10 and the lens even when the camera device shakes due to the user's hand shaking. Perfect image stabilization can be performed. That is, the synchronized shift structure of the image sensor 10 and the lens according to this embodiment can provide a more improved image stabilization (OIS) function compared to a structure that shifts only the image sensor 10 or only the lens.

In this embodiment, the second coil 40 is disposed on the first substrate 20 and the second magnet 50 is disposed on the second substrate 30, but in the modified example, the second magnet 50 is disposed on the first substrate 20. 20 and the second coil 40 may be disposed on the second substrate 30 .

The camera device 3 may include a third substrate 60. The third substrate 60 may include a flexible substrate. The third substrate 60 may be a flexible printed circuit board (FPCB). The third substrate 60 may electrically connect the first substrate 20 and the image sensor 10. The third substrate 60 may connect the second substrate 30 and the first substrate 20. The third substrate 60 may be coupled to the top surface of the first substrate 20. The third substrate 60 may be bonded to the cavity PCB of the first substrate 20 using an anisotropic conductive film (ACF) or flip chip. The bonding between the third substrate 60 and the first substrate 20 may be done using solder balls or Ag epoxy. The third substrate 60 may extend from the side of the second substrate 30 . The second substrate 30 and the third substrate 60 may be a Rigid Flexible Printed Circuit Board (RFPCB) formed integrally. At this time, the second substrate 30 may include a rigid substrate and the third substrate 60 may include a flexible substrate. The third substrate 60 can be bent or unfolded to electrically connect the image sensor 10 and the first substrate 20. The third substrate 60 may be placed at a corner of the second substrate 30 .

The third substrate 60 may include a plurality of third substrates. The third substrate 60 may include four third substrates. The four third substrates may be arranged to be symmetrical to each other. Among the four third substrates, two third substrates may be disposed in the third axis direction, and the remaining two third substrates may be disposed in the fourth axis direction. The third substrate 60 may be disposed between the first extension 32-1 and the second extension 32-2 of the second substrate 30. The third substrate 60 may be placed at a corner of the image sensor 10 . The third substrate 60 may be disposed between the first axis and the second axis. The third substrate 60 may be disposed in the space between the first axis and the second axis. At this time, the first axis may be the axis in the direction in which the first extension 32-1 is disposed, and the second axis may be the axis in the direction in which the second extension 32-2 is disposed.

The third substrate 60 may include a connecting portion 61 connected to the second substrate 30, and a coupling portion 62 formed at an end of the connecting portion 61 and coupled to the upper surface of the first substrate 20. You can. In this embodiment, the connection part 61 may be arranged diagonally with respect to the image sensor 10.

Camera device 3 may include a ball 70 . The ball 70 may be disposed between the first substrate 20 and the second substrate 30. The ball 70 may be placed in the groove 22 of the first substrate 20. The ball 70 may be disposed between the extension portion 32 of the first substrate 20 and the second substrate 30. The ball 70 can support the second substrate 30 movably. The ball 70 may include a ‘guide ball’. The ball 70 may include a plurality of balls. The ball 70 includes a total of 12 balls, and 3 balls support one extension part 32, so a total of 12 balls can support 4 extension parts 32. The ball 70 may be rotatably received in the groove 22 of the first substrate 20 . Ball 70 may be spherical in shape.

The camera device 3 may include a fourth substrate 80. The fourth substrate 80 may be a printed circuit board. The fourth substrate 80 may include an FPCB. The fourth substrate 80 may be coupled to the other surface (lower surface) of the first substrate 20. The fourth substrate 80 may include a connection portion 81 connected to the outside. The connection portion 81 may include a connector. The connection portion 81 may be connected to an external optical device of the camera device 3.

The camera device 3 may include a reinforcement plate 90. The reinforcement plate 90 may be coupled to the fourth substrate 80. The reinforcement plate 90 may be formed of SUS. The reinforcement plate 90 may include a first reinforcement plate 91 disposed on the lower surface of the fourth substrate 80 at a position corresponding to the first substrate 20 . The reinforcement plate 90 may include a second reinforcement plate 92 disposed on the upper surface of the fourth substrate 80 at a position corresponding to the connection portion 81.

The camera device 3 may include a lens module. The lens module may include at least one lens. The lens module may include a barrel and a plurality of lenses coupled to the interior of the barrel. The lens module may be coupled to the bobbin 210 of the lens driving device. The lens module may be coupled to the bobbin 210 by screwing and/or adhesive. The lens module can be moved integrally with the bobbin 210. Lenses may be coupled to movers 200, 300. The lens may be coupled to the first movable member 200.

The camera device 3 may include a filter. The filter may include an infrared filter. The infrared filter can block light in the infrared region from being incident on the image sensor 10. An infrared filter may be placed between the lens and the image sensor 10. For example, an infrared filter may be disposed on the sensor base 15 disposed between the lens driving device and the first substrate 20. As another example, an infrared filter may be placed on the base 430.

The camera device 3 may include a controller. The controller may be placed on the first substrate 20. The controller can individually control the direction, intensity, and amplitude of the current supplied to the first coil 422, second coil 40, and third coil 220 of the lens driving device. The controller may control the lens driving device to perform an autofocus function and/or an image stabilization function. Furthermore, the controller may perform autofocus feedback control and/or image stabilization feedback control for the lens driving device.

Figure 3 is a cross-sectional view (conceptual diagram) showing a configuration related to image sensor shift of a camera device according to a modified example.

Modification examples may include the fifth substrate 30a and the sixth substrate 60a, which are modified forms of the second substrate 30 and the third substrate 60 of the present embodiment. The sixth substrate 60a may extend from the inner surface of the fifth substrate 30a. At this time, the image sensor 10 may be flip-chip coupled to the sixth substrate 60a. The sixth substrate 60a may be coupled to the upper surface of the first substrate 20. That is, one end of the sixth substrate 60a may be coupled to the image sensor 10 and the other end of the sixth substrate 60a may be coupled to the first substrate 20.

Figure 4 is a cross-sectional view (conceptual diagram) showing a configuration related to image sensor shift of a camera device according to another modification.

Other modifications may include a fourth coil 40a and a fifth magnet 50a, which are modified forms of the second coil 40 and the second magnet 50 of the present embodiment. The fifth magnet 50a may be disposed on the upper surface of the second substrate 30. The fifth magnet 50a may overlap the fourth coil 40a in the optical axis direction. The fourth coil 40a may be disposed below the ball 70. The fourth coil 40a may overlap the ball 70 in the optical axis direction. The ball 70 may be disposed between the fourth coil 40a and the fifth magnet 50a in the optical axis direction. According to another modification, the size of the first substrate 20 in the x-axis/y-axis directions can be reduced compared to the present embodiment.

Figure 5 is a plan view (conceptual diagram) showing a configuration related to image sensor shift of a camera device according to another modified example.

Another modified example is the seventh substrate 30b, which is a modified form of the second substrate 30, second coil 40, second magnet 50, third substrate 60, and ball 70 of this embodiment. ), a fifth coil (40b), a sixth magnet (50b), an eighth substrate (60b), and a ball (70b).

The seventh substrate 30b may include a coupling portion 31b and an extension portion 32b. However, compared to this embodiment, the position of the extension portion 32b may be changed. In this embodiment, the extension portion 32 is disposed at the center of one side wall of the coupling portion 31, but in another variant, the extension portion 32b may be disposed biased toward the corner on one side of the coupling portion 31b. You can. Through this, the eighth substrate 60b can be placed on one corner of the coupling portion 31b to the other corner. That is, the eighth substrate 60b may be disposed at the side (corner) of the coupling portion 31b rather than at the corner. The ball 70b may be disposed to be biased toward a corner of the first substrate 20 to support the extension portion 32b. The fifth coil 40b may be disposed biased toward the corner of the first substrate 20. The sixth magnet 50b may be disposed at a corner of the coupling portion 31b so as to face the fifth coil 40b. The eighth substrate 60b may include a connecting portion 61b extending from the coupling portion 31b in the x-axis or y-axis direction, and a coupling portion 62b coupled to the first substrate 20. The eighth substrate 60b may be disposed parallel to the extension portion 32b. The eighth substrate 60b may be disposed to be spaced apart from the extension portion 32b. The eighth substrate 60b may be disposed in a direction corresponding to the extension portion 32b. The eighth substrate 60b may be disposed in the same direction as the extension portion 32b.

As shown in FIG. 5, the eighth substrate 60b includes a first flexible substrate 60-1 extending from the first side of the seventh substrate 30b, and a first side of the seventh substrate 30b. It may include a second flexible substrate 60-2 extending from the opposite second side. One of the seventh substrate 30b and the eighth substrate 30b may be referred to as the second substrate, and the other may be referred to as the third substrate.

The image sensor 10 may include first and second sides disposed on opposite sides of each other, and third and fourth sides disposed on opposite sides of each other. As shown in FIG. 5, the second coil 40 is disposed to correspond to the arrangement direction of the first side of the image sensor 10 and the 2-1 coil 40-1 is disposed adjacent to the first side. and the 2-2 coil 40-2 disposed corresponding to the arrangement direction of the second side of the image sensor 10 and adjacent to the second side, and the arrangement of the third side of the image sensor 10. A 2-3 coil (40-3) arranged in correspondence with the direction and adjacent to the third side, and a second-3 coil (40-3) arranged in correspondence with the arrangement direction of the fourth side of the image sensor 10 and arranged adjacent to the fourth side. It may include a 2-4 coil (40-4). The 2-1 coil 40-1 may be disposed closer to the third side of the image sensor 10 than to the fourth side. The 2-3 coil 40-3 may be disposed closer to the second side of the image sensor 10 than to the first side. Any one of the 2-1 coil (40-1), the 2-2 coil (40-2), the 2-3 coil (40-3), and the 2-4 coil (40-4) is used as the first coil. One can be called the second coil, the other can be called the third coil, and the remaining one can be called the fourth coil.

Hereinafter, the configuration of the lens driving device according to this embodiment will be described with reference to the drawings.

Figure 6 is a perspective view of the lens driving device according to the present embodiment, Figure 7 is a cross-sectional view viewed from X-Y of Figure 6, Figure 8 is an exploded perspective view of the lens driving device according to the present embodiment, and Figure 9 is the present embodiment. It is an exploded perspective view of the lens driving device according to the present embodiment as seen from a direction different from that of FIG. 8, FIG. 10 is an exploded perspective view showing the first movable device and related configurations according to this embodiment, and FIG. 11 is an exploded perspective view showing the second movable device according to this embodiment. FIG. 12 is an exploded perspective view showing a stator according to this embodiment, FIG. 13 is an exploded perspective view showing an elastic member, a support member, and related components according to this embodiment, and FIG. 14 is an exploded perspective view showing a stator according to this embodiment. This is a plan view showing the lens driving device according to an example with the cover omitted.

The lens driving device may be a voice coil motor (VCM). The lens driving device may be a lens driving motor. The lens driving device may be a lens driving actuator. The lens driving device may include an AF module. The lens driving device may include an OIS module. In this embodiment, the case where the lens driving device is an OIS module capable of both AF driving and OIS driving is described through the drawings, but as a modified example, the lens driving device may be replaced with an AF module capable of only AF driving.

As another variation, the lens driving device may be a fixed focus (FF) type in which the lens is fixed so as not to move in the optical axis direction.

The lens driving device may include a cover 100. The cover 100 may include a ‘cover can’. Cover 100 may be placed outside the housing 310. Cover 100 may be combined with base 430. The cover 100 can accommodate the housing 310 therein. The cover 100 may form the exterior of the lens driving device. The cover 100 may have a hexahedral shape with an open lower surface. Cover 100 may be non-magnetic. Cover 100 may be formed of a metal material. The cover 100 may be formed of a metal plate. The cover 100 may be connected to the ground portion of the first substrate 20. Through this, the cover 100 can be grounded. The cover 100 can block electromagnetic interference (EMI). At this time, the cover 100 may be referred to as an 'EMI shield can'.

The cover 100 may include an upper plate 110 and a side plate 120. The cover 100 may include a top plate 110 including a hole 111 and a side plate 120 extending downward from the outer periphery or edge of the top plate 110. The lower end of the side plate 120 of the cover 100 may be disposed on the stepped portion 434 of the base 430. The inner surface of the side plate 120 of the cover 100 may be fixed to the base 430 with an adhesive.

The upper plate 110 of the cover 100 may include a hole 111. The hole 111 may include an ‘opening’. The hole 111 may be formed in the upper plate 110 of the cover 100. When viewed from above, the lens can be seen through the hole 111. The hole 111 may be formed in a size and shape corresponding to the lens. The size of the hole 111 may be larger than the diameter of the lens module so that the lens module can be inserted and assembled through the hole 111. Light introduced through the hole 111 may pass through the lens. At this time, the light passing through the lens can be converted into an electrical signal in the image sensor 10 and obtained as an image.

The lens driving device may include movers 200 and 300. The movers 200 and 300 may be parts that move when current is applied to the lens driving device. The movable elements 200 and 300 may include a first movable element 200 and a second movable element 300 .

The lens driving device may include a first mover (200). The first movable element 200 may be combined with a lens. The first movable member 200 may be coupled to the second movable member 300 through an elastic member 500. The first movable person 200 can move through interaction with the second movable person 300. At this time, the first movable member 200 can move integrally with the lens. Meanwhile, the first movable member 200 can move during AF operation. At this time, the first movable operator 200 may be referred to as an 'AF movable operator'. However, the first movable person 200 can move together with the second movable person 300 even when OIS is driven.

The first movable member 200 may include a bobbin 210. Bobbin 210 may be placed within housing 310. The bobbin 210 may be placed in the hole 311 of the housing 310. The bobbin 210 may be movably coupled to the housing 310 . The bobbin 210 may move in the optical axis direction with respect to the housing 310. A lens may be coupled to the bobbin 210. The bobbin 210 and the lens may be coupled by screwing and/or adhesive. A third coil 220 may be coupled to the bobbin 210. A first elastic member 510 may be coupled to the upper surface of the bobbin 210. A second elastic member 520 may be coupled to the lower surface of the bobbin 210. The bobbin 210 may be coupled to the elastic member 500 by heat fusion and/or adhesive. The adhesive that binds the bobbin 210 and the lens, and the bobbin 210 and the elastic member 500 may be epoxy that is hardened by any one or more of ultraviolet rays (UV), heat, and laser.

The bobbin 210 may include a hole 211. The hole 211 may pass through the bobbin 210 in the optical axis direction. A lens module can be accommodated in the hole 211. For example, threads corresponding to threads formed on the outer peripheral surface of the lens module may be disposed on the inner peripheral surface of the bobbin 210 forming the hole 211.

The bobbin 210 may include a driving unit coupling unit 212. The third coil 220 may be coupled to the driving unit coupling unit 212. The driving unit coupling portion 212 may be formed on the outer peripheral surface of the bobbin 210. The driving unit coupling portion 212 may include a groove formed by a portion of the outer lateral surface of the bobbin 210 being depressed. The third coil 220 may be accommodated in the groove of the driving unit coupling portion 212. The driving unit coupling unit 212 may include a protrusion supporting the lower surface of the third coil 220.

The first movable element 200 may include a third coil 220. The third coil 220 may be an 'AF driving coil' used for AF driving. The third coil 220 may be disposed on the bobbin 210. The third coil 220 may be disposed between the bobbin 210 and the housing 310. The third coil 220 may be disposed on the outer lateral surface or outer peripheral surface of the bobbin 210. The third coil 220 may be directly wound on the bobbin 210. Alternatively, the third coil 220 may be coupled to the bobbin 210 in a series wound state. The third coil 220 may face the first magnet 320. The third coil 220 may be arranged to face the first magnet 320. The third coil 220 may electromagnetically interact with the first magnet 320. In this case, when current is supplied to the third coil 220 and an electromagnetic field is formed around the third coil 220, the third coil 220 and the first magnet 320 undergo electromagnetic interaction. The coil 220 may move with respect to the first magnet 320. The third coil 220 may be formed as a single coil. Alternatively, the third coil 220 may include a plurality of coils spaced apart from each other.

The third coil 220 may include a pair of lead wires for power supply. At this time, one end (lead line) of the third coil 220 is coupled to the 1-5 elastic member 505, and the other end (lead line) of the third coil 220 is coupled to the 1-6 elastic member (506). ) can be combined with. That is, the third coil 220 may be electrically connected to the first elastic member 510. In more detail, the third coil 220 may receive power sequentially through the first substrate 20, the substrate 410, the support member 600, and the first elastic member 510. As a modified example, the third coil 220 may be electrically connected to the second elastic member 520.

The lens driving device may include a second movable member 300. The second movable member 300 may be movably coupled to the stator 400 through the support member 600. The second movable member 300 may support the first movable member 200 through the elastic member 500. The second movable member 300 may move the first movable member 200 or may move together with the first movable member 200. The second movable member 300 can move through interaction with the stator 400. The second movable person 300 can move when OIS is driven. At this time, the second operator 300 may be referred to as an 'OIS operator'. The second movable member 300 can move integrally with the first movable member 200 when OIS is driven.

The second movable member 300 may include a housing 310 . Housing 310 may be disposed outside of bobbin 210. The housing 310 may accommodate at least a portion of the bobbin 210. Housing 310 may be disposed within cover 100. The housing 310 may be disposed between the cover 100 and the bobbin 210. The housing 310 may be formed of a different material from the cover 100. The housing 310 may be formed of an insulating material. The housing 310 may be formed by injection molding. The outer side of the housing 310 may be spaced apart from the inner surface of the side plate 120 of the cover 100. The housing 310 can move for OIS operation through the space between the housing 310 and the cover 100. A first magnet 320 may be placed in the housing 310. The housing 310 and the first magnet 320 may be joined by an adhesive. A first elastic member 510 may be coupled to the upper surface of the housing 310. A second elastic member 520 may be coupled to the lower surface of the housing 310. The housing 310 may be coupled to the elastic member 500 by heat fusion and/or adhesive. The adhesive that joins the housing 310 and the first magnet 320, and the housing 310 and the elastic member 500 may be an epoxy that is hardened by one or more of ultraviolet rays (UV), heat, and a laser. there is.

The housing 310 may include four side portions 310a and four corner portions 310b disposed between the four side portions 310a. The side portion 310a of the housing 310 includes a first side, a second side disposed on opposite sides of the first side, and third and fourth sides disposed on opposite sides between the first side and the second side. It can be included. The corner portion 310b of the housing 310 includes a first corner portion disposed between the first side and the third side, a second corner portion disposed between the first side and the fourth side, and a second corner portion and a fourth side portion. It may include a third corner portion disposed between the three sides, and a fourth corner portion disposed between the second side and the fourth side portion. The side portion 310a of the housing 310 may include a ‘lateral wall’.

Housing 310 may include a hole 311. The hole 311 may be formed in the housing 310. The hole 311 may be formed to penetrate the housing 310 in the optical axis direction. A bobbin 210 may be placed in the hole 311. The hole 311 may be formed at least in part to have a shape corresponding to the bobbin 210. The inner peripheral surface or inner lateral surface of the housing 310 forming the hole 311 may be positioned spaced apart from the outer peripheral surface of the bobbin 210. However, the housing 310 and the bobbin 210 overlap at least partially in the optical axis direction, which may limit the movement stroke distance of the bobbin 210 in the optical axis direction.

The housing 310 may include a driving unit coupling portion 312. The first magnet 320 may be coupled to the driving unit coupling unit 312. The driver coupling portion 312 may include a groove formed by recessing a portion of the inner peripheral surface and/or lower surface of the housing 310. The driver coupling portion 312 may be formed on each of the four side portions 310a of the housing 310. As a modified example, the driving unit coupling portion 312 may be formed in each of the four corner portions 310b of the housing 310.

The second movable member 300 may include a first magnet 320. The first magnet 320 may be placed in the housing 310. The first magnet 320 may be fixed to the housing 310 with adhesive. The first magnet 320 may be disposed between the bobbin 210 and the housing 310. The first magnet 320 may face the third coil 220. The first magnet 320 may electromagnetically interact with the third coil 220. The first magnet 320 may face the first coil 422. The first magnet 320 may electromagnetically interact with the first coil 422. The first magnet 320 can be commonly used for AF driving and OIS driving. The first magnet 320 may be placed on the side 310a of the housing 310. At this time, the first magnet 320 may be a flat magnet having a flat plate shape. As a modified example, the first magnet 320 may be placed at a corner of the housing 310. At this time, the first magnet 320 may be a corner magnet having a hexahedral shape where the inner side is wider than the outer side.

The lens driving device may include a stator 400. The stator 400 may be placed on one side of the movers 200 and 300. The stator 400 may be disposed below the movers 200 and 300. The stator 400 may support the second movable member 300 movably. The stator 400 can move the second movable member 300. At this time, the first movable member 200 may also move together with the second movable member 300.

The stator 400 may include a substrate 410 . The substrate 410 may include a circuit member 420. However, the substrate 410 may be described as a separate member as the circuit member 420. The substrate 410 may include a first coil 422 facing the first magnet 320. The substrate 410 may be placed on the base 430. The substrate 410 may be disposed between the housing 310 and the base 430. A support member 600 may be coupled to the substrate 410. The substrate 410 may supply power to the first coil 422. The substrate 410 may be combined with the circuit member 420. The substrate 410 may be combined with the first coil 422. The substrate 410 may be combined with the first substrate 20 disposed below the base 430. The substrate 410 may include a flexible printed circuit board (FPCB). The substrate 410 may be bent in some places.

The substrate 410 may include a body portion 411. The substrate 410 may include a hole 411a formed in the body portion 411. The substrate 410 may include a hole 411a corresponding to a lens coupled to the bobbin 210.

The substrate 410 may include a terminal portion 412. The terminal portion 412 may extend downward from the body portion 411 of the substrate 410. The terminal portion 412 may be formed by bending a portion of the substrate 410. At least a portion of the terminal portion 412 may be exposed to the outside. The terminal portion 412 may be coupled to the first substrate 20 disposed below the base 430 by soldering. The terminal portion 412 may be disposed in the terminal receiving portion 433 of the base 430. The terminal portion 412 may include a plurality of terminals.

The stator 400 may include a circuit member 420. The circuit member 420 may be disposed on the base 430. The circuit member 420 may be disposed on the substrate 410. The circuit member 420 may be disposed between the first magnet 320 and the base 430. Here, the circuit member 420 is described as a separate component from the substrate 410, but the circuit member 420 may be understood as a component included in the substrate 410.

The circuit member 420 may include a substrate portion 421. The substrate portion 421 may include a ‘substrate’. The substrate unit 421 may be an FPCB. The first coil 422 may be formed integrally with a fine pattern coil (FP coil) on the substrate 421. A hole through which the support member 600 passes may be formed in the substrate portion 421. The substrate portion 421 may include a hole 421a. The hole 421a of the substrate 421 may be arranged to correspond to the hole 411a of the substrate 410.

The circuit member 420 may include a first coil 422. The first coil 422 may face the first magnet 320. The first coil 422 may face the first magnet 320. The first coil 422 may electromagnetically interact with the first magnet 320. In this case, when current is supplied to the first coil 422 and a magnetic field is formed around the first coil 422, the first coil 422 and the first magnet 320 undergo electromagnetic interaction. The magnet 320 may move with respect to the first coil 422. The first coil 422 can move the housing 310 and the bobbin 210 with respect to the base 430 in a direction perpendicular to the optical axis through electromagnetic interaction with the first magnet 320. The first coil 422 may be a fine pattern coil (FP coil) formed integrally with the substrate portion 421.

The stator 400 may include a base 430. Base 430 may be placed below housing 310. Base 430 may be disposed below substrate 410 . A substrate 410 may be placed on the upper surface of the base 430. Base 430 may be combined with cover 100. The base 430 may be disposed on the first substrate 20 .

Base 430 may include a hole 431. The hole 431 may be formed in the base 430. The hole 431 may be formed to penetrate the base 430 in the optical axis direction. Light passing through the lens module through the hole 431 may be incident on the image sensor 10. That is, the light passing through the lens module passes through the hole 421a of the circuit member 420, the hole 411a of the substrate 410, and the hole 431 of the base 430 to be incident on the image sensor 10. You can.

Base 430 may include a sensor coupling portion 432. A second sensor 900 may be disposed in the sensor coupling portion 432. The sensor coupling portion 432 may accommodate at least a portion of the second sensor 900. The sensor coupling portion 432 may include a groove formed by recessing the upper surface of the base 430. The sensor coupling portion 432 may include two grooves. At this time, the second sensor 900 is disposed in each of the two grooves to detect the movement of the first magnet 320 in the X-axis direction and the Y-axis direction.

The base 430 may include a terminal receiving portion 433. The terminal portion 412 of the board 410 may be disposed in the terminal receiving portion 433. The terminal receiving portion 433 may include a groove formed by recessing a portion of a side surface of the base 430. The width of the terminal receiving portion 433 may be formed to correspond to the width of the terminal portion 412 of the substrate 410. The length of the terminal receiving portion 433 may be formed to correspond to the length of the terminal portion 412 of the substrate 410. Alternatively, the length of the terminal portion 412 of the board 410 may be longer than the length of the terminal receiving portion 433, so a portion of the terminal portion 412 may protrude below the base 430.

The base 430 may include a step portion 434. The step portion 434 may be formed on the side of the base 430. The step portion 434 may be formed around the outer peripheral surface of the base 430. The step portion 434 may be formed by protruding or recessing a portion of the side surface of the base 430. The lower end of the side plate 120 of the cover 100 may be placed in the step portion 434.

The lens driving device may include an elastic member 500. The elastic member 500 may connect the housing 310 and the bobbin 210. The elastic member 500 may be coupled to the bobbin 210 and the housing 310. The elastic member 500 may elastically support the bobbin 210. The elastic member 500 may have elasticity at least in part. The elastic member 500 can movably support the bobbin 210. The elastic member 500 may support the movement of the bobbin 210 during AF operation. At this time, the elastic member 500 may be referred to as an 'AF support member'.

The elastic member 500 may include a first elastic member 510. The first elastic member 510 may be coupled to the upper part of the bobbin 210 and the upper part of the housing 310. The first elastic member 510 may be coupled to the upper surface of the bobbin 210. The first elastic member 510 may be coupled to the upper surface of the housing 310. The first elastic member 510 may be combined with the support member 600. The first elastic member 510 may be formed as a leaf spring.

The first elastic member 510 may include 1-1st to 1-6th elastic members 501, 502, 503, 504, 505, and 506 spaced apart from each other. The first elastic member 510 may be used as a conductive line to supply electricity to the first sensor 710. The first elastic member 510 may include 1-1st to 1-4th elastic members 501, 502, 503, and 504 spaced apart from each other. Each of the 1-1st to 1-4th elastic members 501, 502, 503, and 504 may be coupled to the substrate 720 to which the first sensor 710 is coupled. The first elastic member 510 and the substrate 720 may be joined by soldering. The first elastic member 510 may be used as a conductive line to supply electricity to the third coil 220. The first elastic member 510 may include a 1-5 elastic member 505 and a 1-6 elastic member 506 that are spaced apart from each other. The 1-5 elastic member 505 may be coupled to one end of the third coil 220, and the 1-6 elastic member 506 may be coupled to the other end of the third coil 220. The first elastic member 510 and the third coil 220 may be joined by soldering.

The first elastic member 510 may include an outer portion 511. The outer portion 511 may be coupled to the housing 310. The outer portion 511 may be coupled to the upper surface of the housing 310. The outer portion 511 may include a hole or groove coupled to the protrusion of the housing 310. The outer portion 511 may be fixed to the housing 310 with an adhesive.

The first elastic member 510 may include an inner portion 512. The inner portion 512 may be coupled to the bobbin 210. The inner portion 512 may be coupled to the upper surface of the bobbin 210. The inner portion 512 may include a hole or groove coupled to the protrusion of the bobbin 210. The inner portion 512 may be fixed to the bobbin 210 by adhesive.

The first elastic member 510 may include a connection portion 513. The connection part 513 may connect the outer part 511 and the inner part 512. The connection portion 513 may have elasticity. At this time, the connection portion 513 may be referred to as an ‘elastic portion’. The connection portion 513 may be formed by bending twice or more.

The first elastic member 510 may include a coupling portion 514. The coupling portion 514 may be coupled to the support member 600. The coupling portion 514 may be coupled to the support member 600 by soldering. The coupling portion 514 may include a hole or groove coupled to the support member 600. The coupling portion 514 may extend from the outer portion 511. The coupling portion 514 may include a bent portion that is formed by bending.

The elastic member 500 may include a second elastic member 520. The second elastic member 520 may be disposed below the bobbin 210. The second elastic member 520 may be coupled to the bobbin 210 and the housing 310. The second elastic member 520 may be coupled to the lower surface of the bobbin 210. The second elastic member 520 may be coupled to the lower surface of the housing 310. The second elastic member 520 may be formed as a leaf spring. The second elastic member 520 may be formed integrally.

The second elastic member 520 may include an outer portion 521. The outer portion 521 may be coupled to the housing 310. The outer portion 521 may be coupled to the lower surface of the housing 310. The outer portion 521 may include a hole or groove coupled to the protrusion of the housing 310. The outer portion 521 may be fixed to the housing 310 with an adhesive.

The second elastic member 520 may include an inner portion 522. The inner portion 522 may be coupled to the bobbin 210. The inner portion 522 may be coupled to the lower surface of the bobbin 210. The inner portion 522 may include a hole or groove coupled to the protrusion of the bobbin 210. The inner portion 522 may be fixed to the bobbin 210 with an adhesive.

The second elastic member 520 may include a connection portion 523. The connection portion 523 may connect the outer portion 521 and the inner portion 522. The connecting portion 523 can elastically connect the outer portion 521 and the inner portion 522. The connection portion 523 may have elasticity. At this time, the connection portion 523 may be referred to as an ‘elastic portion’. The connection portion 523 may be formed by bending two or more times.

The lens driving device may include a support member 600. The support member 600 may connect the movers 200 and 300 and the stator 400. The support member 600 may be coupled to the first elastic member 510 and the substrate 410. The support member 600 may be coupled to the first elastic member 510 and the circuit member 420 of the substrate 410. The support member 600 can movably support the housing 310. The support member 600 can elastically support the housing 310. The support member 600 may have elasticity at least in part. The support member 600 may support the movement of the housing 310 and the bobbin 210 when OIS is driven. At this time, the support member 600 may be referred to as an 'OIS support member'. The support member 600 may include an elastic member. The support member 600 may be formed of wire. As a modified example, the support member 600 may be formed of a leaf spring.

The support member 600 may include a plurality of wires. The support member 600 may include six wires spaced apart from each other. The support member 600 may include first to sixth support parts 601, 602, 603, 604, 605, and 606 that are spaced apart from each other. The first to sixth support portions 601, 602, 603, 604, 605, and 606 may be used as conductive lines inside the lens driving device. The first to sixth support parts 601, 602, 603, 604, 605, and 606 may be coupled to the substrate 410. The first support portion 601 may be coupled to the 1-1 elastic member 501. The second support portion 602 may be coupled to the first-second elastic member 502. The third support portion 603 may be coupled to the first-third elastic member 503. The fourth support portion 604 may be coupled to the first-fourth elastic member 504. The fifth support portion 605 may be coupled to the first-fifth elastic member 505. The sixth support portion 606 may be coupled to the first-sixth elastic member 506.

The lens driving device may include a damper (not shown). The damper may be disposed on the support member 600. The damper may be disposed on the support member 600 and the housing 310. The damper may be disposed on the elastic member 500. The damper may be disposed on the elastic member 500 and the bobbin and/or the elastic member 500 and the housing 310. The damper may be disposed on the elastic member 500 and/or the support member 600 to prevent resonance occurring in the elastic member 500 and/or the support member 600.

The lens driving device may include a first sensor unit 700. The first sensor unit 700 may be provided for autofocus feedback. The first sensor unit 700 can detect movement of the bobbin 210 in the optical axis direction. The first sensor unit 700 can detect the amount of movement of the bobbin 210 in the optical axis direction and provide the information to the controller in real time.

The lens driving device may include a first sensor 710. The first sensor 710 can be used for AF feedback driving. At this time, the first sensor 710 may be called an ‘AF feedback driving sensor’. The first sensor 710 may be placed in the housing 310. As a modified example, the first sensor 710 may be disposed on the bobbin 210. The first sensor 710 can detect the movement of the first movable person 200. The first sensor 710 may include a Hall sensor. At this time, the Hall sensor can detect the movement of the bobbin 210 and the lens by detecting the magnetic force of the third magnet 730. The detection value detected by the first sensor 710 can be used for AF feedback control.

The lens driving device may include a substrate 720. The substrate 720 may be placed in the housing 310 . The substrate 720 may be combined with the first sensor 710. The substrate 720 may be electrically connected to the first sensor 710. The substrate 720 may be combined with the first elastic member 510. The substrate 720 may include four terminals coupled to the first to fourth elastic members 501, 502, 503, and 504. The substrate 720 and the first elastic member 510 may be joined by soldering.

The lens driving device may include a third magnet 730. The third magnet 730 may be a ‘sensing magnet’. The third magnet 730 may be placed on the bobbin 210. The third magnet 730 can be detected by the first sensor 710. The third magnet 730 may face the first sensor 710. The third magnet 730 may be placed at a corner of the bobbin 210. That is, the third magnet 730 may be arranged to face the corner portion 310b of the housing 310.

The lens driving device may include a fourth magnet 800. The fourth magnet 800 may be a 'compensation magnet'. The fourth magnet 800 may be placed on the bobbin 210. The fourth magnet 800 may be arranged to achieve magnetic force balance with the third magnet 730. The fourth magnet 800 may be symmetrical with the third magnet 730 about the optical axis. The fourth magnet 800 may be placed at a position corresponding to the third magnet 730 around the optical axis. The fourth magnet 800 may have a size and/or shape corresponding to the third magnet 730 around the optical axis. A third magnet 730 may be placed on one side of the bobbin 210 and a fourth magnet 800 may be placed on the other side of the bobbin 210. The fourth magnet 800 may be placed at a corner of the bobbin 210. That is, the fourth magnet 800 may be arranged to face the corner portion 310b of the housing 310.

The lens driving device may include a second sensor 900. The second sensor 900 can be used for IS feedback control. At this time, the second sensor 900 may be called an ‘OIS feedback driving sensor’. The second sensor 900 may be disposed between the base 430 and the substrate 410. The second sensor 900 can detect the movement of the second movable person 300. The second sensor 900 may include a Hall sensor. At this time, the hall sensor can detect the movement of the housing 310 and the first magnet 320 by detecting the magnetic force of the first magnet 320. The detection value detected by the second sensor 900 can be used for OIS feedback control.

Below, the operation of the camera device according to this embodiment will be described.

The autofocus function of the camera device according to this embodiment will be described. When power is supplied to the third coil 220, the third coil 220 moves with respect to the first magnet 320 due to electromagnetic interaction between the third coil 220 and the first magnet 320. I do it. At this time, the bobbin 210 to which the third coil 220 is coupled moves integrally with the third coil 220. That is, the bobbin 210 to which the lens module is coupled moves in the optical axis direction with respect to the housing 310. Since this movement of the bobbin 210 results in the lens module moving closer to or moving away from the image sensor 10, in this embodiment, power is supplied to the third coil 220 to focus on the subject. Control can be performed. Meanwhile, the mentioned focus adjustment can be performed automatically depending on the distance of the subject.

In the camera device according to this embodiment, autofocus feedback control can be performed to more precisely realize the autofocus function. The first sensor 710 disposed in the housing 310 detects the magnetic field of the third magnet 730 disposed in the bobbin 210. Accordingly, when the bobbin 210 moves relative to the housing 310, the amount of magnetic field detected by the first sensor 710 changes. In this way, the first sensor 710 detects the movement amount of the bobbin 210 in the optical axis direction or the position of the bobbin 210 and transmits the detection value to the controller. The controller determines whether to perform additional movement of the bobbin 210 based on the received detection value. Since this process occurs in real time, the autofocus function of the camera device according to this embodiment can be performed more precisely through autofocus feedback control.

The hand shake correction function of the camera device according to this embodiment will be described. When power is supplied to the first coil 422, the first magnet 320 moves with respect to the first coil 422 due to electromagnetic interaction between the first coil 422 and the first magnet 320. I do it. At this time, the housing 310 to which the first magnet 320 is coupled moves integrally with the first magnet 320. That is, the housing 310 moves in the horizontal direction (direction perpendicular to the optical axis) with respect to the base 430. However, at this time, a tilt of the housing 310 with respect to the base 430 may be induced. Meanwhile, the bobbin 210 moves integrally with the housing 310 as the housing 310 moves in the horizontal direction. Accordingly, this movement of the housing 310 results in the lens module coupled to the bobbin 210 with respect to the image sensor 10 moving in a direction parallel to the direction in which the image sensor 10 is placed. That is, in this embodiment, the camera shake correction function can be performed by supplying power to the first coil 422.

In the camera device according to this embodiment, hand shake correction feedback control may be performed to more precisely realize the hand shake correction function. The second sensor 900 disposed on the base 430 detects the magnetic field of the first magnet 320 disposed on the housing 310. Accordingly, when the housing 310 moves relative to the base 430, the amount of magnetic field detected by the second sensor 900 changes. The pair of second sensors 900 detect the amount of movement or position of the housing 310 in the horizontal direction (x-axis and y-axis directions) in this manner and transmit the detected value to the controller. The controller determines whether to perform additional movement of the housing 310 based on the received detection value. Since this process occurs in real time, the hand shake correction function of the camera device according to this embodiment can be performed more precisely through hand shake correction feedback control.

In the above, just because all the components constituting the embodiment of the present invention have been described as being combined or operated in combination, the present invention is not necessarily limited to this embodiment. That is, as long as it is within the scope of the purpose of the present invention, all of the components may be operated by selectively combining one or more of them. In addition, terms such as 'include', 'comprise', or 'have' described above mean that the corresponding component may be present, unless specifically stated to the contrary, and therefore do not exclude other components. Rather, it should be interpreted as being able to include other components. All terms, including technical or scientific terms, unless otherwise defined, have the same meaning as generally understood by a person of ordinary skill in the technical field to which the present invention pertains. Commonly used terms, such as terms defined in a dictionary, should be interpreted as consistent with the contextual meaning of the related technology, and should not be interpreted in an idealized or overly formal sense unless explicitly defined in the present invention.

The above description is merely an illustrative explanation of the technical idea of the present invention, and various modifications and variations will be possible to those skilled in the art without departing from the essential characteristics of the present invention. Accordingly, the embodiments disclosed in the present invention are not intended to limit the technical idea of the present invention, but rather to explain it, and the scope of the technical idea of the present invention is not limited by these embodiments. The scope of protection of the present invention should be interpreted in accordance with the claims below, and all technical ideas within the equivalent scope should be construed as being included in the scope of rights of the present invention.

10: Image sensor 20: First substrate
30: second substrate 40: second coil
50: second magnet 60: third substrate
70: Ball 80: Fourth board
90: reinforcement plate

Claims (20)

first substrate;
a second substrate disposed on the first substrate;
an image sensor moving with the second substrate;
a second coil and a second magnet that move the second substrate through interaction;
A lens disposed on the image sensor; and
It includes a third substrate connecting the first substrate and the second substrate,
The image sensor moves in a direction perpendicular to the optical axis direction with respect to the lens due to the interaction between the second coil and the second magnet,
The third substrate electrically connects the image sensor and the first substrate,
A camera device wherein the third substrate has a bent shape. According to paragraph 1,
A camera device in which the bent shape of the third substrate is formed by bending the third substrate twice or more. According to paragraph 1,
A camera device wherein the third substrate movably supports the second substrate with respect to the first substrate. According to paragraph 1,
A camera device including a third coil and a first magnet that moves the lens in the optical axis direction. According to paragraph 1,
A camera device wherein each of the first substrate and the second substrate is a rigid printed circuit board. According to paragraph 1,
The image sensor includes an image surface facing the lens,
A camera device wherein the upper surface of the image sensor is disposed lower than the upper surface of the second substrate. According to paragraph 1,
A camera device wherein the image sensor does not overlap the second substrate in the direction perpendicular to the optical axis direction. According to paragraph 1,
In the optical axis direction, the thickness of the second substrate is thicker than the thickness of the third substrate. According to paragraph 1,
The third substrate is a camera device connected to an outer surface of the second substrate. According to paragraph 1,
The second magnet is a camera device that overlaps the second coil in the optical axis direction. According to paragraph 1,
A camera device in which the second magnet is placed higher than the second coil. According to paragraph 1,
The second substrate includes a coupling portion coupled to the image sensor and an extension portion extending outward from the coupling portion,
At least a portion of the extension portion of the second substrate overlaps the first substrate in the optical axis direction,
A camera device in which a ball is disposed between the extension portion of the first substrate and the second substrate. According to clause 12,
The first substrate includes a groove formed on an upper surface of the first substrate,
A camera device wherein the ball is disposed in the groove of the first substrate. According to clause 12,
The second coil is a camera device that overlaps the ball in the optical axis direction. According to paragraph 1,
The second coil is disposed on the first substrate,
The second magnet is disposed on the second substrate and faces the second coil. first substrate;
a second substrate disposed on the first substrate;
an image sensor disposed on the second substrate;
a second coil and a second magnet that move the second substrate;
A lens disposed on the image sensor; and
It includes a third substrate electrically connecting the first substrate and the image sensor,
The image sensor moves in a direction perpendicular to the optical axis direction with respect to the lens,
A camera device wherein the third substrate movably supports the second substrate with respect to the first substrate. According to clause 16,
A camera device including a third coil and a first magnet that moves the lens in the optical axis direction. According to clause 16,
The third substrate is a camera device including a bent shape formed by bending twice or more. According to clause 16,
The second magnet is a camera device that overlaps the second coil in the optical axis direction. main body;
The camera device according to any one of claims 1 to 19 disposed in the main body; and
An optical device including a display disposed on the main body and outputting images captured by the camera device.