Camera actuator and camera module including the same

Abstract

Disclosed in an embodiment of the present invention is a camera device comprising: a fixed portion; the movable plate is arranged on the fixed part; a first movable portion provided on the moving plate; a first driving portion that tilts the first movable portion about at least one of the first axis and the second axis; a first ball portion provided between the moving plate and the first movable portion; and a second ball portion disposed between the moving plate and the fixed portion, in which the first driving portion includes a first coil disposed in the first movable portion and a first magnet disposed in the fixed portion.

Description

Technical Field

[0001] Embodiments of the present invention relate to a camera actuator and a camera module including the camera actuator. Background Art

[0002] A camera is a device that captures pictures or videos of an object and is installed on a portable device, a drone, a vehicle, etc. In order to improve image quality, a camera module or a camera device may have an image stabilization (IS) function that corrects or prevents image shaking caused by the user's movement, an auto focus (AF) function that automatically adjusts the gap between the image sensor and the lens to align the focal length of the lens, and a zoom function that increases or decreases the magnification of a distant object and captures the object through a zoom lens.

[0003] At the same time, as image sensors have higher pixel counts, resolution increases and the size of pixels becomes smaller, and as pixels become smaller, the amount of light received in the same period of time decreases. Therefore, the higher the resolution of the camera, the more severe the hand shake caused by a slow shutter speed in a dark environment. A representative example of image stabilization (IS) technology is optical image stabilization (OIS) technology, which is a technology that corrects movement by changing the light path.

[0004] According to the general OIS technology, the movement of the camera can be detected by a gyro sensor or the like, and the lens can be tilted or moved based on the detected movement, or the camera module including the lens and the image sensor can be tilted or moved. In the case of tilting or moving the lens or the camera module including the lens and the image sensor for OIS, it is necessary to ensure an additional space for the tilting or movement around the lens or the camera module.

[0005] Meanwhile, an actuator for OIS may be provided around the lens. In this case, the actuator for OIS may include two axes perpendicular to the optical axis Z, that is, an actuator responsible for X-axis tilt and a driver responsible for Y-axis tilt. In this case, image distortion occurs when the actuator for OIS moves the lens without moving the image sensor. Specifically, there is a distorted shape at the edge or corner.

[0006] Furthermore, since the image sensor and the lens are separated and only one of the image sensor and the lens is tilted, there is a problem in that it is difficult to correct high wide-angle shake. Summary of the invention

[0007] [Technical issues]

[0008] A technical problem to be solved by embodiments of the present invention is to provide a camera actuator and a camera module which prevent image distortion and achieve high wide-angle shake correction by enabling an image sensor, a lens, and a substrate to rotate or move together.

[0009] In addition, embodiments of the present invention are directed to providing a camera actuator and a camera module that achieve high-bandwidth correction by enabling all parts except the housing to move or tilt and mechanically correct the image, so that the current consumption and load during image processing are smaller than the movement of the lens or sensor.

[0010] In addition, embodiments of the present invention are directed to providing a camera actuator having low heat generation by enabling a substrate portion, a lens, and an image sensor to move together, and a camera module including the camera actuator.

[0011] In addition, the technical problem to be solved by the embodiments of the present invention is to provide a camera actuator suitable for an ultra-thin, ultra-small, and high-resolution camera.

[0012] The purpose to be achieved in the embodiments is not limited thereto, and it can be said that purposes or effects that can be understood from the specific contents of solving the problems described below or realizing the present invention are also included.

[0013] [Technical solution]

[0014] A camera actuator according to an embodiment of the present invention includes: a housing; a movable plate arranged in the housing; a movable part, which is arranged on the movable plate and moves in a direction perpendicular to the optical axis direction; a first ball part, which is arranged between the movable plate and the movable part; and a second ball part, which is arranged between the movable plate and the housing, wherein the movable part includes a substrate part and a coil arranged on the substrate part.

[0015] The movable portion may include: a sensor base disposed on the moving plate; a holder disposed on the base plate portion; and a bobbin disposed in the holder.

[0016] The substrate portion may be disposed on the sensor base.

[0017] The camera actuator may include: a first magnet provided on a housing; a yoke provided in the housing; and a second magnet provided on a holder.

[0018] The sensor base may include a first groove in which the first ball portion is disposed, and the housing may include a second groove in which the second ball portion is disposed.

[0019] The spool can be moved along the optical axis.

[0020] The spool may move in response to movement of the movable portion.

[0021] The shell may include: a first shell side and a second shell side facing each other; and a third shell side and a fourth shell side facing each other, and the third shell side and the fourth shell side may be disposed between the first shell side and the second shell side.

[0022] The first housing side portion may include: a protrusion protruding outward; and an inner groove formed by the protrusion.

[0023] The height of the protrusion may be smaller than the maximum height of the first housing side portion.

[0024] The camera actuator may include a first magnet disposed on the housing, wherein the first magnet may include a first sub-magnet disposed on the second housing side and a second sub-magnet disposed on any one of the third housing side and the fourth housing side.

[0025] The camera actuator may include: a yoke provided in a housing; and a holding magnet provided on a sensor base, wherein the holding magnet and the yoke may overlap in an optical axis direction.

[0026] The substrate portion may include: a first region; a second region extending upward from the first region; and a third region extending outward from the first region.

[0027] The third region may include: a first curved portion curved along the optical axis direction; a second curved portion curved outward from the first curved portion; and a third curved portion curved along a direction perpendicular to the optical axis direction.

[0028] The camera actuator may include a clamp disposed in the inner groove.

[0029] The jig may be disposed spaced apart from the substrate portion in the optical axis direction or in a direction perpendicular to the optical axis direction.

[0030] The camera actuator may include a second magnet disposed on the bobbin, wherein the coil includes a first coil and a second coil disposed in the second region, and the second coil may face the second magnet.

[0031] The second region may be disposed between the first coil and the first magnet.

[0032] The camera actuator may include an image sensor disposed on a substrate portion.

[0033] The camera actuator may include a shaft disposed in a holder.

[0034] The camera actuator may include a second magnet disposed on the holder, and the shaft may include a magnetic material and form an attractive force with the second magnet.

[0035] The second magnet may be disposed between the second coil and the shaft.

[0036] According to another embodiment, a camera device includes: a fixed part; a movable plate arranged on the fixed part; a first movable part arranged on the movable plate; a first driving part, which tilts the first movable part relative to at least one of a first axis and a second axis; a first ball part, which is arranged between the movable plate and the first movable part; and a second ball part, which is arranged between the movable plate and the fixed part, wherein the first driving part includes a first coil arranged on the first movable part and a first magnet arranged on the fixed part.

[0037] The first movable portion may include an image sensor and a substrate portion coupled to the image sensor.

[0038] The camera device may include: a second movable part, which is arranged in the first movable part; and a second driving part, which causes the second movable part to move along the optical axis direction, wherein the second driving part may include a second coil arranged on the first movable part and a second magnet arranged on the second movable part, and the substrate part may include a first substrate part and a second substrate part, the first substrate part is coupled to the image sensor, and the first coil and the second coil are arranged on the second substrate part.

[0039] The first substrate portion may include a main body portion on which the image sensor is disposed; and an extension portion connected to the main body portion and on which a connector or a terminal is disposed.

[0040] The second substrate portion may include a first substrate connected to the first substrate portion and on which the first coil is disposed, and a second substrate on which the second coil is disposed.

[0041] The first coil may include a first unit coil and a second unit coil, and the first substrate may include a first unit substrate and a second unit substrate, the first unit coil being disposed on the first unit substrate and the second unit coil being disposed on the second unit substrate.

[0042] The camera device may include a sensor base disposed between the moving plate and the base plate portion.

[0043] The fixed portion may include a cover accommodating the first movable portion, and the cover may include a first cover coupled to the first magnet and a second cover coupled to the first cover.

[0044] In another embodiment, a camera device includes: a cover; a moving plate disposed in the cover; a substrate portion disposed on the moving plate; an image sensor disposed on the substrate portion; a holder disposed on the image sensor; a bobbin disposed in the holder; a first magnet disposed on the cover; a second magnet disposed on the bobbin; a first coil disposed on the substrate portion and facing the first magnet and a second coil facing the second magnet; a first ball portion disposed between the moving plate and the cover; and a second ball portion disposed between the moving plate and the substrate portion.

[0045] The first ball portion may be disposed along the second axial direction, and the second ball portion may be disposed along the first axial direction.

[0046] The first ball portion and the second ball portion may be integrally formed with the moving plate.

[0047] The first ball portion and the second ball portion may bulge upward and downward, respectively.

[0048] The first ball portion and the second ball portion may be disposed in grooves formed in the upper and lower surfaces of the moving plate, respectively.

[0049] The substrate portion may include: a first substrate portion, which is coupled to the image sensor; and a second substrate portion, on which the first coil and the second coil are arranged, and the first substrate portion may include: a main body portion, on which the image sensor is arranged; an extension portion, which is connected to the main body portion and on which a connector or a terminal is arranged; and a clamp, which is arranged between the extension portion and the retainer.

[0050] The cover may include a first cover coupled to the first magnet and a second cover coupled to the first cover, and the first cover may include a protrusion protruding outward, and the extending portion is provided on the protrusion.

[0051] In another embodiment, a camera device includes: a fixed part; an imaging module, which is disposed on the fixed part and includes a substrate part, an image sensor disposed on the substrate part, a retainer disposed on the image sensor, and a bobbin disposed in the retainer; a moving plate disposed between the fixed part and the imaging module; a first ball part disposed between the moving plate and the fixed part; and a second ball part disposed between the moving plate and the imaging module.

[0052] The camera device may include a yoke disposed on the fixed portion, and the imaging module may include: a sensor base disposed between the moving plate and the base portion; and a holding magnet disposed on the sensor base.

[0053] The holding magnet and the yoke may overlap in the optical axis direction.

[0054] The camera device may include: a first magnet disposed on the fixing portion; a second magnet disposed on the bobbin; a first coil disposed on the base plate portion and facing the first magnet; and a second coil facing the second magnet.

[0055] [Beneficial Effects]

[0056] The technical problem to be solved by the embodiments of the present invention is to realize a camera actuator and a camera module which prevent image distortion and achieve high wide-angle shake correction by enabling an image sensor, a lens, and a substrate to rotate or move together.

[0057] In addition, embodiments of the present invention can realize a camera actuator and a camera module that achieve high-bandwidth correction by moving or tilting all parts except the housing and mechanically correcting the image, so that the current consumption and load during image processing are smaller than the movement of the lens or sensor.

[0058] In addition, the embodiments of the present invention may realize a camera actuator having low heat generation by enabling a substrate portion, a lens, and an image sensor to move together, and a camera module including the camera actuator.

[0059] The technical problem to be solved by the embodiments of the present invention is to realize a camera actuator suitable for an ultra-thin, ultra-small and high-resolution camera.

[0060] Various beneficial advantages and effects of the present invention are not limited to the above contents and can be more easily understood in the course of describing specific embodiments of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0061] Figure 1 is a perspective view of a camera module including a camera actuator according to an embodiment.

[0062] Figure 2 is an exploded perspective view of the camera actuator according to this embodiment.

[0063] Figure 3 yes Figure 2 Another perspective view of .

[0064] Figure 4 is an exploded perspective view of a housing and a moving plate in a camera actuator according to an embodiment.

[0065] Figure 5 Is used to describe Figure 4 A view of the coupling or assembly of the housing and the moving plate.

[0066] Figure 6is an exploded perspective view of a sensor base and a substrate portion in a camera actuator according to an embodiment.

[0067] Figure 7 Is used to describe Figure 5 View of the coupling or assembly between the sensor base and the substrate portion.

[0068] Figure 8 is an exploded perspective view of a holder and a filter in a camera actuator according to an embodiment.

[0069] Fig. 9 Is used to describe Figure 8 View of the coupling or assembly between the retainer and the filter.

[0070] Fig.10 is an exploded perspective view of a bobbin in a camera actuator according to an embodiment.

[0071] Fig.11 Is used to describe Fig.10 A view of the coupling or assembly between the bobbin and the second magnet,

[0072] Fig.12 2 is a view for describing assembly of a camera actuator according to an embodiment.

[0073] Fig.13 is a view for describing one type of actuation of a camera actuator according to an embodiment.

[0074] Fig.14 is an exploded view of movable and fixed portions during one type of actuation of a camera actuator, according to an embodiment.

[0075] Fig.15 is along Figure 1 A view taken along line AA' in FIG.

[0076] Fig.16 is along Figure 1 A view taken along line BB' in FIG.

[0077] Fig.17 yes Fig.16 perspective view.

[0078] Fig.18 is a perspective view of a substrate portion in a camera actuator according to an embodiment.

[0079] Fig.19a is with Fig.18 Different perspectives.

[0080] Fig.19b is a perspective view of a moving plate according to an embodiment.

[0081] Fig.19c is another perspective view of a moving plate according to an embodiment.

[0082] Fig.19d is a view showing a lower surface of a sensor base of a movable portion according to an embodiment.

[0083] Fig.19e is a view showing an inner bottom surface of a fixing portion (or a housing) according to an embodiment.

[0084] Fig. 20 is along Figure 1 View taken along line CC' in FIG.

[0085] Fig.21 is a side view of a camera actuator excluding a cover and a housing according to an embodiment.

[0086] Fig. 22 is a view for describing a holding force of another type of actuation of a camera actuator according to an embodiment.

[0087] Fig.23 is a view for describing another type of actuation of a camera actuator according to an embodiment.

[0088] Fig.24 is along Fig.23 A view taken along line DD' in FIG.

[0089] Fig.25 is along Fig.23 A view taken along line EE'.

[0090] Fig.26 are multiple perspective views of a holder in a camera actuator according to an embodiment.

[0091] Fig. 27 is a perspective view of a mobile terminal to which a camera module according to an embodiment is applied.

[0092] Fig.28 is a perspective view of a vehicle to which a camera module according to an embodiment is applied. DETAILED DESCRIPTION

[0093] Since the present invention can be variously changed and has various embodiments, specific embodiments will be illustrated and described in the accompanying drawings. However, it should be understood that this is not intended to limit the present invention to specific embodiments, but includes all changes, equivalents and alternatives included in the spirit and scope of the present invention.

[0094] The term "and / or" includes any combination of a plurality of related listed items or any one of the plurality of related listed items.

[0095] When referring to a certain component being "connected" or "linked" to another component, it should be understood that the certain component can be directly connected or linked to another component, but other components may still exist in between. On the other hand, when referring to a certain component being "directly connected" or "directly linked" to another element, it should be understood that no other components exist in between.

[0096] The terms used in this application are only used to describe specific embodiments and are not intended to limit the present invention. Unless the context clearly stipulates otherwise, the singular form includes the plural form. In this application, it should be understood that terms such as "including" or "having" are intended to indicate the existence of features, numbers, steps, operations, components, parts or combinations thereof described in the specification, and these terms do not preclude the possibility of the existence or addition of one or more other features, numbers, steps, operations, components, parts or combinations thereof.

[0097] Unless otherwise defined, all terms (including technical or scientific terms) used in this document have the same meaning as those commonly understood by those skilled in the art. Terms (such as those defined in commonly used dictionaries) should be interpreted as terms with meanings consistent with those in the relevant technical context, and should not be interpreted in an idealized or overly formal sense unless explicitly defined in this application.

[0098] Hereinafter, the embodiments will be described in detail with reference to the accompanying drawings, and the same reference numerals denote the same or similar components regardless of the reference numerals, and repeated descriptions thereof will be omitted.

[0099] Figure 1 is a perspective view of a camera module including a camera actuator according to an embodiment, Figure 2 is an exploded perspective view of a camera actuator according to an embodiment, and Figure 3 yes Figure 2 Another perspective view of .

[0100] Reference Figure 1, a camera module according to an embodiment may include a camera actuator 1000. In addition, a camera module according to an embodiment may include the camera actuator 1000 and also include a lens moved or transferred by the camera actuator 1000. Hereinafter, a description will be made based on the camera actuator 1000 without a lens. In addition, the camera actuator may be used interchangeably with a “lens transfer device”, a “lens driving device”, or a “lens moving device”, etc. In addition, a camera module may be used interchangeably with a camera device, a camera device, an imaging device, an imaging device, an imaging module, etc.

[0101] In addition, the camera actuator 1000 according to an embodiment may be an auto focus (AF) actuator and / or an optical image stabilization (OIS) actuator. For example, the actuator 1000 may be an actuator that implements both AF and OIS. In addition, the camera actuator 1000 according to an embodiment may be a zoom actuator that additionally performs movement of an additional movable lens group.

[0102] In addition, the camera actuator 1000 according to the embodiment may be a voice coil motor, a microactuator, a silicon actuator, etc., and may be applied in various ways such as a capacitive way, a thermal way, a bimorph way, an electrostatic way, etc., but is not limited thereto. In the embodiment, the camera actuator 1000 is described as an actuator using a magnet and a coil.

[0103] In addition, OIS can also be used interchangeably with terms such as hand shake correction, optical image stabilization, optical image correction, image shake correction, etc.

[0104] Further references Figure 2 and Figure 3 , the camera actuator 1000 and the camera device according to the embodiment may include a housing 1110 , a moving plate 1120 , a sensor base 1130 , a substrate portion 1140 , a holder 1150 , a bobbin 1160 , and a cover 1170 .

[0105] The housing 1110 may be located at the lower part of the camera actuator 1000. The housing 1110 may have a cavity. For example, the housing 1110 may be formed in various shapes. The moving plate 1120, the sensor base 1130, the substrate portion 1140, the holder 1150, and the bobbin 1160 described below may be located in the cavity of the housing 1110. The moving plate 1120, the sensor base 1130, the substrate portion 1140, the holder 1150, and the bobbin 1160 may be sequentially arranged along the optical axis direction. Here, the bottom surface corresponds to the optical axis direction in the first direction. In addition, the first direction is the X-axis direction in the figure. The first direction (X-axis direction) may be parallel to the incident direction of the light incident on the image sensor. Here, the first direction (X-axis direction) may correspond to a direction perpendicular to the image sensor or a direction from the image sensor toward the filter FT or the lens LS. In addition, as described above, the camera actuator 1000 may include a lens LS arranged in the bobbin 1160. In addition, the second direction is the Y-axis direction in the figure, and may be a direction perpendicular to the first direction (X-axis direction). In addition, the third direction is the Z-axis direction in the figure, and may be a direction perpendicular to the first direction and the second direction. Therefore, the moving plate 1120, the sensor base 1130, the substrate portion 1140, the holder 1150, and the bobbin 1160 may be sequentially arranged along the optical axis direction. Alternatively, the moving plate 1120, the sensor base 1130, the substrate portion 1140, the holder 1150, and the bobbin 1160 may be sequentially arranged toward the upper side in the housing 1110.

[0106] In addition, the bobbin 1160 may be moved along the optical axis direction or may be tilted or rotated along a direction perpendicular to the optical axis. A detailed description thereof will be described below.

[0107] In addition, the housing 1110 may be a "fixed portion", "fixed member" or "fixed element" in the camera actuator 1000. That is, the housing 1110 cannot move or rotate in the direction of the optical axis or in a direction perpendicular to the optical axis. Therefore, the components connected or coupled to the housing 1110 cannot move or rotate in the direction of the optical axis or in a direction perpendicular to the optical axis. However, the second ball portion B2 located in the second groove of the housing 1110 can rotate in a direction perpendicular to the optical axis.

[0108] The moving plate 1120 may be located on a bottom surface of the cavity of the housing 1110. The moving plate 1120 may be disposed in the housing 1110. The moving plate 1120 may rotate in a direction perpendicular to the optical axis direction.

[0109] The first ball portion B1 and the second ball portion B2 may be located on the moving plate 1120. The first ball portion B1 and the second ball portion B2 may include at least one ball. Either of the first ball portion B1 and the second ball portion B2 may be positioned in an overlapping manner along any one of the second direction (Y-axis direction) and the third direction (Z-axis direction). In addition, the other of the first ball portion B1 and the second ball portion B2 may be positioned in an overlapping manner along the other direction of the second direction (Y-axis direction) and the third direction (Z-axis direction). The first ball portion B1 and the second ball portion B2 may be arranged side by side in directions intersecting or perpendicular to each other. Therefore, the first ball portion B1 may be caused to rotate, rotate axially, or tilt in any one of the second direction and the third direction. In addition, the second ball portion B2 may be caused to rotate, rotate axially, or tilt in the other direction of the second direction and the third direction.

[0110] The first ball portion B1 may be disposed between the moving plate 1120 and a movable portion disposed on the moving plate 1120. The movable portion ( Fig.14 The movable part (MP) may include a moving plate 1120, a sensor base 1130, a substrate portion 1140, a holder 1150, and a bobbin 1160. In particular, the movable part ( Fig.14 The movable portion (MP) may include a substrate portion 1140, a bobbin 1160, and coils C1 and C2 connected to the substrate portion 1140. The movable portion may rotate or move in a direction perpendicular to the optical axis direction. That is, the OIS function may be implemented. In addition, the movable portion ( Fig.14 The MP in the embodiment may include a moving plate 1120. For example, in the case where rotation is performed relative to the first ball part B1, the movable part other than the moving plate 1120 may rotate or move. In the case where rotation is performed relative to the second ball part B2, the movable part including the moving plate 1120 may rotate or move. Therefore, hereinafter, description will be made based on the movable part including the moving plate 1120.

[0111] In addition, according to an embodiment, the camera device may be described as including a fixed portion 1110, a camera module (or imaging module), and a moving plate 1120. In this case, the camera module may correspond to the above-mentioned movable portion. That is, the camera module or the imaging module may be provided on the fixed portion, and may include a substrate portion 1140, an image sensor IS provided on the substrate portion, a holder 1150 provided on the image sensor, and a bobbin 1160 provided in the holder. In addition, the moving plate 1120 may be provided between the fixed portion and the camera module (or imaging module). In addition, the first ball portion B1 may be provided between the moving plate and the fixed portion, and the second ball portion may be provided between the moving plate and the camera module (or imaging module).

[0112] In addition, in an embodiment of the present invention, the camera device may include a fixed part 1110 (housing), a movable plate 1120 and a first movable part. As described above, the movable plate 1120 may be disposed on the fixed part. In addition, the first movable part may be disposed on the movable plate. Specifically, the movable part may include a first movable part and a second movable part. In this case, the first movable part may include a component moved by an OIS function. In addition, the second movable part may include a component moved by an AF function. For example, the first movable part may include a sensor base 1130 and a substrate part 1140. In addition, the second movable part may include a holder 1150 and a bobbin 1160.

[0113] In addition, the camera device according to the embodiment may include a driving part that moves or rotates the movable part (the first movable part and the second movable part). The driving part may include a magnet and a coil. In an embodiment, the driving part may include a first magnet M1, a second magnet M2, a first coil C1 and a second coil C2. In addition, the driving part may include a first driving part that moves, tilts or rotates the first movable part relative to at least one of the first axis and the second axis. Here, the first axis may correspond to the Y axis (or Z axis) in the second direction (or the third direction). The second axis may correspond to the Z axis (or Y axis) in the third direction (or the second direction). In addition, the first driving part may include a first magnet M1 and a first coil C1. In addition, the first driving part may include a first coil C1 disposed on the first movable part and a first magnet M1 disposed on the fixed part (housing). In addition, the first movable part may be tilted relative to at least one of the first axis and the second axis by the first driving part. In addition, moving along the axis may mean moving or shifting in the axial direction. In addition, moving toward the axis or tilting (or rotating) relative to the axis means rotational movement of a component or member.

[0114] In addition, the second movable part may be arranged in the first movable part. The second movable part may be movable in the first movable part along the optical axis direction. In this case, the driving part may include a second driving part that causes the second movable part to move along the optical axis direction. The second driving part may include a second coil C2 and a second magnet M2. The second coil C2 may be arranged on the first movable part. Specifically, the second coil C2 may be arranged on the substrate part. In addition, the second magnet M2 may be arranged on the second movable part. In an embodiment, the second magnet M2 may be arranged on the bobbin 1160.

[0115] In addition, as described above, the first movable portion may include an image sensor and a substrate portion coupled to the image sensor. The substrate portion 1140 may include a first substrate portion and a second substrate portion. Figure 6 and Figure 7 The detailed description is given in .

[0116] The sensor base 1130 may be disposed on the moving plate 1120. The first ball portion B1 may be located between the sensor base 1130 and the moving plate 1120. Furthermore, the first ball portion B1 may be located between the first movable portion and the moving plate 1120. The sensor base 1130 may be located on the moving plate 1120 and may include a retaining magnet HM. The retaining magnet HM may form an attractive force with the yoke YK in the housing 1110. Therefore, even when the movable portion moves, its position may be maintained within a specific range in the housing 1110, which is a fixed portion. Conversely, the second ball portion B2 may be located between the housing 1110 and the moving plate 1120. Furthermore, the second ball portion B2 may be disposed between the moving plate 1120 and the fixed portion (housing 1100).

[0117] The substrate portion 1140 may be located on the sensor base 1130. The substrate portion 1140 may include a circuit board having a wiring pattern that may be electrically connected, such as a rigid printed circuit board (rigid PCB), a flexible printed circuit board, a rigid-flexible printed circuit board, etc. However, the present invention is not limited thereto.

[0118] The substrate portion 1140 may include coils C1 and C2. In addition, the substrate portion 1140 may be electrically connected to the coils C1 and C2. In addition, the substrate portion 1140 may include a connector connected to an external device. In addition, a controller and a driver element (driver integrated circuit (IC)) may be mounted on the substrate portion 1140. Therefore, the driver element of the substrate portion 1140 may output a signal adjusted by the current applied to the coil in response to a signal received from an external device. In addition, various circuit elements may be mounted on the substrate portion 1140. For example, a position detection sensor (gyro sensor gs) may be mounted on the substrate portion 1140.

[0119] The holder 1150 may be located on the substrate portion 1140. The holder 1150 may be coupled to a bobbin 1160 disposed inside the holder 1150 for realizing an autofocus (AF) function. In this case, as described below, the position between the holder 1150 and the bobbin 1160 may be maintained within a certain range by the attraction between the second magnet M2 and the shaft SH. That is, even when the bobbin 1160 is moved along the optical axis direction by the second magnet and the second coil, the bobbin 1160 may not be separated from the holder 1150. In other words, the attraction between the second magnet M2 and the shaft SH may form a position holding force between the bobbin 1160 and the holder 1150. In this case, the shaft SH may be disposed in the holder 1150.

[0120] In addition, the filter FT can also be provided on the holder 1150. The filter FT can suppress foreign matter from flowing into the image sensor IS mounted on the substrate portion 1140. Therefore, the filter FT can be located above the image sensor IS.

[0121] The filter FT and the image sensor IS can have the same size or different sizes. The size of the filter FT can be changed according to the effective area of the image sensor IS.

[0122] As described above, the spool 1160 can accommodate the lens LS. Therefore, the spool 1160 can move in the optical axis direction or in a direction perpendicular to the optical axis.

[0123] The cover 1170 can be located in an area (e.g., the outermost area) of the camera actuator 1000 to surround or cover the movable part and / or the fixed part. The cover 1170 can block or attenuate electromagnetic waves generated from the outside. Therefore, errors in the OIS operation and the AF operation due to the components mounted on the substrate portion 1140 can be reduced. In addition, the cover 1170 can be assembled or fastened to the lower part of the housing 1110.

[0124] In addition, as described above, the camera actuator 1000 can include the image sensor IS, the filter FT, the first magnet M1, the second magnet M2, the first coil C1, the second coil C2, the clamp CL, the shaft SH, etc. It should be understood that in addition to the above components, the camera actuator 1000 can also include other components described below.

[0125] In addition, the first magnet M1 can be provided on the housing 1110. Additionally, the yoke YK can be provided in the housing 1110. The second magnet M2 can be provided on the holder 1150. The clamp CL can be provided in the housing 1110.

[0126] In addition, the image sensor IS can receive the light passing through the lens LS and convert the light signal into an electrical signal. The image sensor IS can include various elements that perform this operation.

[0127] In addition, in the camera actuator or camera device according to the present invention, the housing 1110 can be used interchangeably with a "base", a "fixed part", a "first cover", a "lower member", a "lower support member", and a "support member". For example, in an embodiment, the cover can include a first cover and a second cover. The first cover can correspond to the housing 1110. Therefore, the first magnet can be coupled to the first cover 1110. Therefore, the moving plate 1120 can be located in the first cover or the cover.

[0128] In addition, the second cover may correspond to the above-described cover 1170. That is, the camera device according to an embodiment may be described as including a cover that includes a housing 1110 (first cover) and a cover 1170 (second cover).

[0129] In addition, the retainer 1150 may be referred to as a "housing", a "housing assembly", etc. For example, the camera device according to an embodiment may include a base 1110 and a retainer 1150. In addition, the spool 1160 may be referred to as a "lens carrier", a "lens transfer part", a "lens transfer member", etc.

[0130] Figure 4 is an exploded perspective view of a housing and a moving plate in a camera actuator according to an embodiment, Figure 5 is for describing Figure 4 the coupling or assembly of the housing and the moving plate in

[0131] Referring to Figure 4 and Figure 5 , the moving plate 1120 may be located in the housing 1110. In an embodiment, in addition to the bottom or the lower side portion, the housing 1110 may further include a first housing side portion 1110a, a second housing side portion 1110b, a third housing side portion 1110c, and a fourth housing side portion 1110d.

[0132] The first housing side portion 1110a and the second housing side portion 1110b may be arranged to face each other. In addition, the third housing side portion 1110c and the fourth housing side portion 1110d may be provided between the first housing side portion 1110a and the second housing side portion 1110b.

[0133] The third housing side portion 1110c and the fourth housing side portion 1110d may be positioned to face each other. The third housing side portion 1110c and the fourth housing side portion 1110d may contact each of the first housing side portion 1110a and the second housing side portion 1110b. For example, the first housing side portion 1110a and the second housing side portion 1110b may overlap in the second direction (Y-axis direction) and may be arranged to be spaced apart from each other. The third housing side portion 1110c and the fourth housing side portion 1110d may overlap in the third direction (Z-axis direction) and may be arranged to be spaced apart from each other.

[0134] First, the housing 1110 may include a second groove PH2, and a second ball portion may be provided on the bottom surface or the lower inner surface of the second groove PH2. That is, the second ball portion may be disposed in the second groove PH2. For example, a coupling member (such as grease, etc.) for disposing the second ball portion may be located in the second groove PH2. Accordingly, the second ball portion may be easily tilted, rotated, or moved in the second groove PH2.

[0135] The first housing side 1110a may include a protrusion 1110ap protruding outward. In other words, the first cover 1110 may include a protrusion 1110ap that protrudes outward, and an extension portion of the substrate portion is disposed on the protrusion 1110ap. That is, the housing 1110 may include a protrusion 1110ap that protrudes or extends outward from any one side or outer side surface. In addition, the housing 1110 may include an inner groove 1110ag formed by the protrusion 1110ap. That is, due to the protrusion 1110ap of the first housing side 1110a, the cavity may partially protrude outward. The above-mentioned clamp and substrate portion 1140 may be located in the inner groove 1110ag. In other words, the substrate portion 1140 may extend outward through the inner groove 1110ap and may be easily connected to an external device. In addition, the increase in the size of the camera actuator may be easily suppressed by the substrate portion extending outward via the inner groove 1110ap. That is, miniaturization of the camera actuator according to the embodiment can be achieved.

[0136] In addition, the height of the protrusion 1110ap can be smaller than the maximum height of the first housing side portion 1110a. With this configuration, it is easy to ensure a space for the substrate portion to extend outward. In addition, a more compact camera actuator can be provided.

[0137] In addition, the first magnet M1 may be disposed on the housing 1110. In addition, the first magnet M1 may be located on the cover or the first cover. The first magnet M1 may include a first sub-magnet M1a and a second sub-magnet M1b extending in directions perpendicular to each other.

[0138] In addition, in an embodiment, the first sub-magnet M1a can be disposed on any side except the first shell side 1110a. For example, the first sub-magnet M1a can be disposed on the second shell side 1110b. In addition, the second sub-magnet M1b can be disposed on any one of the third shell side 1110c and the fourth shell side 1110d. That is, the first sub-magnet M1a and the second sub-magnet M1b can not overlap in the second direction or the third direction. In other words, the first sub-magnet M1a and the second sub-magnet M1b can be arranged to be offset in the second direction or the third direction.

[0139] In addition, the housing 1110 may include a yoke groove Ykh disposed on the bottom surface. The yoke groove Ykh may be located between the plurality of second grooves PH2. Therefore, the attraction between the housing 1110 and the sensor base may be mainly formed at the center of the movable plate. Therefore, the efficiency of the attraction, coupling force or holding force between the movable part and the housing 1110 may be improved. In other words, the movable part may be subjected to a downward force (attraction), the housing may be subjected to an upward force (attraction), and the movable plate is located therebetween. In other words, the movable plate may be pressed by the housing and the movable part (e.g., the sensor base).

[0140] Furthermore, the second housing side 1110b may include a first magnet slot 1110bh. Furthermore, any one of the third housing side 1110c and the fourth housing side 1110d may include a second magnet slot 1110ch. In an embodiment, the third housing side 1110c may include a second magnet slot 1110ch.

[0141] First, the yoke YK may be seated in the yoke groove Ykh in the housing 1110. Also, the first sub-magnet M1a may be seated in the first magnet groove 1110bh. In addition, the second sub-magnet M1b may be seated in the second magnet groove 1110ch.

[0142] In addition, the second ball portion B2 may be seated in the second groove PH2. The second ball portion B2 may include a 2-1 ball B2a and a 2-2 ball B2b. The yoke YK may be located in a region between the 2-1 ball B2a and the 2-2 ball B2b.

[0143] In addition, the movable plate 1120 can be located in the housing 1110. The movable plate 1120 can include a plate hole 1120h corresponding to the yoke YK or the yoke slot Ykh. Therefore, the coupling force between the yoke YK and the retaining magnet to be described below can be further enhanced. In addition, the weight of the movable part can be reduced. In addition, the plate hole 1120h can overlap with the yoke YK or the yoke slot Ykh in the optical axis direction.

[0144] In addition, the first ball part B1 may be located on the moving plate 1120. The first ball part B1 may include a 1-1 ball B1a and a 1-2 ball B1b. The 1-1 ball B1a and the 1-2 ball B1b may overlap and may be spaced apart from each other along the third direction (Z-axis direction) or along the second axis. The 2-1 ball B2a and the 2-2 ball B2b may overlap and may be spaced apart from each other along the second direction (Y-axis direction).

[0145] In addition, the center of the moving plate 1120 may correspond to an intersection point between an extension line connecting the plurality of first ball parts B1 and an extension line connecting the plurality of second ball parts B2, or may be different from the intersection point.

[0146] In another example, the movable plate may be formed integrally with the first ball portion and the second ball portion. For example, the movable plate may be formed into a structure having a plate and protrusions (corresponding to the ball portions) protruding upward / downward on both surfaces of the plate. For example, the protrusions may correspond to a partial shape of a sphere. For example, the protrusions may have a semicircular shape or a hemispherical shape. In addition, the first ball portion and the second ball portion may be disposed in grooves formed in the upper and lower surfaces of the movable plate, respectively. The first ball portion may be disposed in a groove disposed in the upper surface of the movable plate. In addition, the second ball portion may be disposed in a groove disposed in the lower surface of the movable plate.

[0147] In addition, a holding magnet to be described below may be disposed adjacent to the yoke YK. The holding magnet may overlap the yoke YK in the optical axis direction. Therefore, as described above, the coupling force between the sensor base and the housing may be further enhanced.

[0148] Figure 6 is an exploded perspective view of a sensor base and a substrate portion in a camera actuator according to an embodiment, Figure 7 Is used to describe Figure 5 View of the coupling or assembly between the sensor base and the substrate portion.

[0149] Reference Figure 6 and Figure 7 , the sensor base 1130 may include a base protrusion 1130p protruding downward. The base protrusion 1130p may be located on the lower surface of the sensor base 1130. In addition, the sensor base 1130 may include a first groove PH1 provided in the lower surface. The number of the first grooves PH1 may be at least one or more, corresponding to the number of the first balls. Similarly, the above-mentioned second grooves may also correspond to the number of the second balls. A plurality of first grooves PH1 corresponding to the number of the first balls may be provided, and the base protrusion 1130p may be located between the plurality of first grooves PH1. Therefore, the base protrusion 1130p or the holding magnet HM may be located between adjacent first balls. Therefore, the first ball and the base protrusion 1130p or the holding magnet HM may overlap in a direction perpendicular to the optical axis direction (e.g., a third direction or a Z-axis direction). The holding magnet HM may be located on the base protrusion 1130p. With this configuration, the distance between the holding magnet HM and the above-mentioned yoke may be reduced. Specifically, the base protrusion 1130p can overlap with the plate hole in a direction perpendicular to the optical axis. Therefore, the attraction between the holding magnet HM and the yoke can be further enhanced. That is, the coupling force or holding force between the movable part and the housing can be enhanced.

[0150] In addition, the sensor base 1130 may include a base hole or a base groove 1130h. The base groove 1130 may ensure a space for a circuit element (gyro sensor, etc.) located below the substrate portion 1140.

[0151] In addition, the substrate portion 1140 may be located on the sensor base 1130. The substrate portion 1140 may be coupled to the sensor base 1130 through a coupling member, a contact member, etc. Alternatively, the substrate portion 1140 may be fastened to the sensor base 1130 in various ways.

[0152] The substrate portion 1140 may include a first region 1140a, a second region 1140b, and a third region 1140c. An image sensor may be disposed in the first region 1140a.

[0153] In addition, the second region 1140b may extend upward from the first region 1140a. The second region 1140b may overlap the first magnet and the second magnet in the second direction or the third direction.

[0154] In addition, the third region 1140c may extend outward from the first region 1140a. The third region 1140c may include at least one bent portion. In addition, the connector CN may be located at the end. The substrate portion 1140 may be electrically connected to an external electronic device through the connector CN. A detailed description thereof will be described below.

[0155] The first region 1140a may be formed of a rigid PCB, and the second region 1140b and the third region 1140c may be formed of a flexible PCB, a rigid-flexible PCB, or the like.

[0156] In addition, the first coil C1 and the second coil C2 may be located in the second region 1140b. The movable portion may be moved or rotated in a direction perpendicular to the optical axis direction by a signal (e.g., current) applied to the first coil C1. That is, an OIS function may be implemented. In addition, the movable portion may be moved in the optical axis direction by a signal (e.g., current) applied to the second coil C2. That is, an AF function may be implemented. To this end, the first coil C1 may include a first sub-coil C1a and a second sub-coil C1b. The first sub-coil C1a may be positioned to correspond to any one of the first sub-magnet and the second sub-magnet described above. The second sub-coil C1b may be positioned to correspond to the other of the first sub-magnet and the second sub-magnet. For example, the first sub-coil C1a may be positioned to correspond to the first sub-magnet. The first sub-coil C1a may overlap with the first sub-magnet in the second direction. The second sub-coil C1b may be positioned to correspond to the second sub-magnet. The second sub-coil C1b may overlap with the second sub-magnet in the third direction.

[0157] In the case of coupling or assembly between the sensor base 1130 and the substrate portion 1140, the substrate portion 1140 may be mounted on the sensor base 1130 after the holding magnet HM is mounted on the sensor base 1130. The first coil C1 and the second coil C2 may be mounted before or after the substrate portion 1140 is mounted on the sensor base 1130. In addition, the gyro sensor gs may be mounted to the substrate portion 1140 before or after the substrate portion 1140 is mounted on the sensor base 1130.

[0158] Furthermore, as described above, the first movable portion may include an image sensor and a substrate portion coupled to the image sensor.

[0159] In addition, the substrate portion 1140 may include a first substrate portion and a second substrate portion. The image sensor may be mounted on the first substrate portion. Specifically, the first substrate portion may include a main body portion and an extension portion, the image sensor is disposed on the main body portion, the extension portion is connected to the main body portion and a connector or terminal is disposed on the extension portion. That is, the first substrate portion may include the above-mentioned first area 1140a and the third area 1140c. In addition, the main body portion may correspond to the above-mentioned first area 1140a. In addition, the extension portion may correspond to the above-mentioned third area 1140c.

[0160] The first coil and the second coil may be disposed on the second substrate portion. That is, the second substrate portion may correspond to the above-mentioned second region 1140b.

[0161] Therefore, the second substrate portion may include a first substrate connected to the first substrate portion and on which the first coil C1 is disposed and a second substrate on which the second coil is disposed. That is, the second region 1140b may include a first substrate on which the first coil C1 is disposed and a second substrate on which the second coil C2 is disposed.

[0162] The first coil C1 may include a first unit coil and a second unit coil. That is, the first unit coil may correspond to the first sub-coil C1a. In addition, the second unit coil may correspond to the second sub-coil C1b. In addition, the first unit coil and the second unit coil may generate a driving force under which the first movable part is tilted or rotated relative to axes intersecting each other.

[0163] In addition, the first substrate or the second region may include a first unit substrate on which the first unit coil is disposed and a second unit substrate on which the second unit coil is disposed. The first unit substrate and the second unit substrate may not overlap at least partially in the first direction or the second direction. In addition, the first unit substrate and the second unit substrate may be offset in the first direction or the second direction. The extension directions of the first unit substrate and the second unit substrate or the extension directions of the long sides of the first unit coil and the second unit coil may be perpendicular to each other or intersect each other.

[0164] Figure 8 is an exploded perspective view of a holder and a filter in a camera actuator according to an embodiment, and Fig. 9 Is used to describe Figure 8 View of the coupling or assembly between the retainer and the filter.

[0165] Reference Figure 8 and Fig. 9 , the holder 1150 may include a holder hole 1150h. The holder hole 1150h may be located at the center of the holder 1150. The holder hole 1150h may be positioned to correspond to the filter FT or the image sensor IS. In addition, the holder 1150 may include a receiving groove for accommodating a bobbin. Therefore, the bobbin described below may be located in the holder 1150. The filter FT may be positioned to overlap with the holder hole 1150h in the optical axis direction or in the first direction (X-axis direction). That is, the filter FT may cover the holder hole 1150h. Therefore, foreign matter may be prevented from entering the image sensor below the holder 1150 through the holder hole 1150h.

[0166] The holder 1150 may include a holder slot 1150g located on the side. The holder slot 1150g may correspond to the position of the second coil. In addition, the second magnet may be located on the side of the holder slot 1150g. That is, the strength of the electromagnetic force generated by the second magnet and the second coil may be further enhanced by the holder slot 1150g. In this case, the first coil provided on the substrate portion may face the first magnet. In addition, the second magnet and the second coil may face each other. In other words, due to the holder slot 1150g, there is no obstacle between the second magnet and the second coil, so the strength of the electromagnetic force generated by the second coil and the second magnet may be increased. In addition, the shaft 1151 may be located in the holder 1150. The shaft 1151 may be an axis extending in the optical axis direction. The shaft may be located near the holder slot 1150g.

[0167] The holder 1150 may be coupled to or assembled with the shaft 1151 and the filter FT. The filter FT may be formed of glass. The shaft 1151 may include a magnetic material. Therefore, an attractive force may be formed between the shaft 1151 and the second magnet. In other words, a coupling force or a retaining force may be formed between the holder 1150 and the bobbin. Therefore, the bobbin may move in the holder 1150 even when moving along the optical axis direction.

[0168] Fig.10 is an exploded perspective view of a bobbin in a camera actuator according to an embodiment, and Fig.11 Is used to describe Fig.10 View of the coupling or assembly between the bobbin and the second magnet.

[0169] Reference Fig.10 and Fig.11 , the bobbin 1160 may be located in the holder 1150. The bobbin 1160 may include a carrier groove 1160g formed on the side. The carrier groove 1160g may be positioned adjacent to the second magnet M2 mounted on the side. That is, the second magnet M2 may be located on the bobbin 1160. In addition, the shaft may be located in the carrier groove 1160g. In this case, the second magnet M2 may overlap with the shaft in a direction perpendicular to the optical axis (e.g., a third direction).

[0170] In addition, the bobbin 1160 may include a carrier hole 1160h. The above-mentioned lens may be located in the carrier hole 1160h.

[0171] Fig.12 2 is a view for describing assembly of a camera actuator according to an embodiment.

[0172] Reference Fig.12 , the sensor base 1130, the substrate portion 1140, the retainer 1150 and the bobbin 1160 may be positioned or installed in the housing 1110 in which the moving plate 1120 is installed. Therefore, the movable portion may be assembled or installed in the housing 1110 as a fixed portion. In addition, the fixture CL may be located in the inner groove of the housing 1110. In an embodiment, the fixture CL may be disposed between the extension portion (third region) and the retainer. After the fixture CL is disposed in the inner groove, the cover 1170 may surround the outside of the housing 1110. The cover 1170 may also include a cover groove 1170g disposed on one side. The cover groove 1170g may be positioned to correspond to the position of the third region of the substrate portion 1140. That is, a space in which the substrate portion 1140 extends outward through the cover groove 1170g may be formed.

[0173] Fig.13 is a view for describing one type of actuation of a camera actuator according to an embodiment, and Fig.14 is an exploded view of movable and fixed parts during one type of actuation of a camera actuator according to an embodiment.

[0174] Reference Fig.13 and Fig.14 , the movable part MP can rotate in a direction (second direction or third direction) perpendicular to the optical axis direction (X-axis direction) or relative to a direction (second direction or third direction) perpendicular to the optical axis direction (X-axis direction).

[0175] For example, the movable portion MP can rotate (yaw) in a direction perpendicular to the optical axis direction (eg, the second direction). Also, the movable portion MP can rotate (pitch) in a direction perpendicular to the optical axis direction (eg, the third direction).

[0176] In addition, in the case of rotation (yaw), the moving plate can also rotate. More specifically, since the second ball part B2 disposed in the housing 1110 is arranged along the second direction (Y-axis direction) or the first axis, the moving plate 1120 can also rotate for rotation (yaw) relative to the second direction.

[0177] In addition, in the case of rotation (pitch), the moving plate may not rotate. More specifically, since the first ball portion B1 disposed between the moving plate 1120 and the sensor base 1130 is disposed along the third direction (Z-axis direction), the moving plate 1120 may not rotate for rotation (pitch) relative to the third direction.

[0178] The rotation (yaw or pitch) can be achieved by the electromagnetic force between the first magnet M1 and the first coil of the substrate part 1140. The substrate part 1140 can rotate (yaw or pitch) by the electromagnetic force generated at the position of the first coil in the optical axis direction or in the direction opposite to the optical axis direction.

[0179] Fig.15 It is along Figure 1 The view taken along line AA' in Fig.16 It is along Figure 1 The view taken along line BB' in Fig.17 yes Fig.16 Perspective drawing, Fig.18 is a perspective view of a substrate portion in a camera actuator according to an embodiment, Fig.19a is different from Fig.18 Perspective drawing, Fig.19b is a perspective view of a moving plate according to an embodiment, Fig.19c is another perspective view of a moving plate according to an embodiment, Fig.19d is a view showing a lower surface of a sensor base of a movable part according to an embodiment, and Fig.19eIt is a view showing the inner bottom surface of the fixed part (or housing) according to an embodiment.

[0180] Referring to Figures 15 to 17 , the substrate portion 1140 may include a first region 1140a, a second region 1140b, and a third region 1140c. In this case, the first region 1140a may overlap with the image sensor IS and the filter FT in the optical axis direction or the first direction (X-axis direction).

[0181] In addition, the first coil C1 and the first magnet M1 may overlap in the second direction (Y-axis direction). In addition, according to an embodiment, a position detection sensor (e.g., a Hall sensor) may be provided inside the coil.

[0182] Furthermore, the first coil C1 and the first magnet M1 (specifically, the first sub-coil and the first sub-magnet) may overlap with the spool 1160 and the holder 1150 in the second direction.

[0183] The holding magnet HM may overlap with the yoke YK in the optical axis direction or the first direction (X-axis direction). In addition, the yoke YK and the holding magnet HM may be located between adjacent second ball portions B2. In an embodiment, the adjacent second ball portions B2 may overlap with the yoke YK and the holding magnet HM in the second direction (Y-axis direction).

[0184] In addition, in the substrate portion 1140, the second region 1140b may extend upward from the first region 1140a. Additionally, the third region 1140c may extend outward from the first region 1140a. In an embodiment, the third region 1140c may extend in the second direction (Y-axis direction).

[0185] The third region 1140c according to an embodiment may include a first bending portion BP1 that is adjacent to the outside of the first region 1140a and bends in the optical axis direction, a second bending portion BP2 that is connected to one end of the first bending portion BP1 and bends outward, and a third bending portion BP3 that is connected to one end of the second bending portion BP2 and bends in a direction perpendicular to the optical axis direction (the second direction or the third direction).

[0186] First, even when the substrate portion 1140 moves, tilts, or rotates in a direction perpendicular to the optical axis by the OIS function, shape deformation or reliability degradation can be suppressed by the third bending portion BP3.

[0187] Then, through the first bent portion BP1, the substrate portion 140 can be easily extended upward without further increasing the length of the substrate portion 140 in the first direction. In addition, the second bent portion BP2 can be located between the upper surface and the lower surface of the camera actuator. The first bent portion BP1 can also be located between the upper surface and the lower surface of the camera actuator. That is, the inclined or moved substrate portion can be extended outward while maintaining the miniaturization of the camera actuator.

[0188] In addition, the clamp CL can be located in the inner groove 1110ag. The clamp CL can be spaced apart (gap1 or gap2) from the substrate portion 1140 in the first direction (X-axis direction), the second direction (Y-axis direction), or the third direction. In other words, the clamp CL can be spaced apart from the substrate portion 1140 in the optical axis direction or in a direction perpendicular to the optical axis direction. That is, the area (third area) with a flexible circuit board in the substrate portion 1140 for tilting or rotating the movable part can have at least one bend. In this case, the clamp CL can maintain the shape of the bend (the first bend or the second bend). The clamp CL can be an injection molded product made of a non-magnetic material, a resin, or the like.

[0189] Further references Fig.18 and Fig.19a , the first coil C1 may be located in the second area 1140b. In addition, the second coil C2 may also be located in the second area 1140b. In addition, the Hall sensors HS1 and HS2 may also be located in the second area 1140b. In addition, the image sensor IS may be located in the first area 1140a. In addition, the gyro sensor gs may be located below the first area 1140a. For example, the gyro sensor gs and the image sensor may be respectively arranged on opposite surfaces (e.g., the upper surface and the lower surface) of the first area 1140a. In addition, the moving plate 1120 may include a groove formed in the side portion to minimize the overlapping area with the gyro sensor gs in the optical axis direction. For example, the base groove 1130h and the moving plate 1120 may be at least partially offset in the optical axis direction.

[0190] In addition, the gyro sensor gs and the image sensor IS can be located on different surfaces of the first area 1140a. Therefore, space efficiency can be improved. That is, the camera actuator according to the embodiment can easily provide space for movement or tilt of the substrate portion 1140 and the elements (gyro sensor, image sensor, coil, Hall sensor and other circuit elements) mounted on the substrate portion. Further reference Figures 19a to 19e , the moving plate 1120 may include a plate hole 1120h located at the center. The plate hole 1120h may at least partially overlap with the base protrusion 1130p in the optical axis direction (X-axis direction).

[0191] The base protrusion 1130p may pass through at least a portion of the plate hole 1120h. In addition, the edge of the moving plate 1120 may include an inward groove 1120g. Therefore, it is easy to ensure the lightweight of the moving plate 1120 and the placement space of the elements installed under the sensor base 1130 or the substrate portion 1140.

[0192] In addition, the first placement grooves 1120ah spaced apart in the third direction (Z-axis direction) may be located in the upper surface 1120a of the moving plate 1120. The first placement grooves 1120ah may be arranged to face each other relative to the plate hole 1120h. Alternatively, a plurality of first placement grooves 1120ah may be arranged symmetrically relative to the center of the plate hole 1120h. The first ball portion B1 may be arranged in the first placement groove 1120ah. The first ball portion B1 and the first placement groove 1120ah may be engaged with each other by a bonding member (e.g., epoxy resin, grease, etc.). In addition, the bisection point between the first placement grooves 1120ah may correspond to the center of the moving plate or the plate hole. Therefore, the accuracy of rotation may be improved. In addition, the first placement grooves 1120ah may overlap along the third direction. In addition, a plurality of first placement grooves 1120ah may be spaced apart from each other in the third direction.

[0193] In addition, the second placement groove 1120bh may be located in the lower surface 1120b of the moving plate 1120. The second placement groove 1120bh may be arranged to face each other relative to the plate hole 1120h. Alternatively, a plurality of second placement grooves 1120bh may be arranged symmetrically relative to the center of the plate hole 1120h. The second ball portion B2 may be arranged in the second placement groove 1120bh. The second ball portion B2 and the second placement groove 1120bh may be engaged with each other by a bonding member (e.g., epoxy resin, grease, etc.). In addition, the bisector between the second placement grooves 1120bh may correspond to the center of the moving plate or the plate hole. Therefore, the accuracy of rotation can be improved. In addition, a plurality of second placement grooves 1120bh may be arranged spaced apart from each other in the second direction (Y-axis direction). In addition, the second placement grooves 1120bh may overlap each other in the second direction (Y-axis direction).

[0194] In addition, the holding magnet HM may be placed in a groove formed in the base protrusion 1130p. In addition, the sensor base 1130 may include a first groove PH1 disposed in the lower surface. The number of the first groove PH1 may be at least one or more, corresponding to the number of the first balls. The first groove PH1 may contact the first ball. In addition, the first groove PH1 may overlap along the third direction corresponding to the first ball. The first groove PH1 may be arranged side by side along the third direction. The first groove PH1 may contact the first ball part B1 at least at some points. In addition, the first groove PH1 may be formed in various structures. For example, the first groove PH1 may have at least one surface (bottom surface or inclined surface) corresponding to the number of contact points with the first ball. For example, the first groove PH1 may have a bottom surface BS and a plurality of inclined surfaces CS. When the number of inclined surfaces CS increases, the number of contact points between the first groove PH1 and the first ball part B1 may also increase.

[0195] In addition, a yoke groove Ykh may be formed in the bottom surface of the inner side surface of the fixed portion or the housing 1110. The yoke may be disposed in the yoke groove Ykh. In addition, the yoke groove Ykh may at least partially overlap with the base protrusion 1130p in the optical axis direction. Therefore, the attraction force may be enhanced. In addition, a second groove PH2 may be formed in the bottom surface of the inner side surface of the fixed portion. The second grooves PH2 may be arranged side by side in the second direction (Y-axis direction). The second grooves PH2 may be arranged spaced apart from each other in the second direction and overlap in the second direction. The yoke groove YKh may be disposed between the second grooves PH2 spaced apart from each other. The center of the yoke groove YKh may be located on the bisector of the second groove PH2.

[0196] In addition, a second groove PH2 may be further included. The second groove PH2 may be formed in various structures. For example, the second groove PH2 may have at least one surface (bottom surface or inclined surface) corresponding to the number of contact points with the first ball. For example, the second groove PH2 may have a bottom surface and a plurality of inclined surfaces. When the number of inclined surfaces increases, the number of contact points between the second groove PH2 and the second ball part B2 may also increase.

[0197] Fig. 20 is along Figure 1 The view is taken along line CC' in FIG. Fig.21 is a side view of a camera actuator excluding a cover and a housing according to an embodiment.

[0198] Further references Fig. 20 and Fig.21, a temperature sensor TS and the like may be further mounted on the substrate portion 1140. In this case, the temperature sensor TS may be disposed below the first region 1140a in the substrate portion 1140. In addition, in order to ensure a space where the temperature sensor TS is located, the sensor base 1130 may further include a groove, a recess, and the like.

[0199] In addition, in order to reduce contact with the circuit elements disposed on the first area 1140a of the substrate portion 1140, the lower surface of the holder 1150 disposed on the sensor base 1130 may include a groove 1150IG. Therefore, reliability degradation due to contact between the circuit elements on the substrate portion 114 and the holder 1150 or high temperature can be reduced.

[0200] In addition, the holder may further include a groove in the lower surface to ensure a certain spacing distance from the circuit elements (eg, capacitors, etc.) on the first region in the optical axis direction. Therefore, interference between the circuit elements and the holder can be minimized.

[0201] Furthermore, the camera actuator may be lightweight by forming a groove in the holder 1150 or the sensor base 1130 .

[0202] In addition, the sensor base 1130 may have a double step to ensure a space for the third region 1140c of the substrate portion 1140. That is, the sensor base 1130 may further include a groove connected to the base hole 1130h. With this configuration, the impact between the flexible third region 1140c and the sensor base 1130 when the substrate portion 1140 is tilted can be prevented or reduced.

[0203] In addition, the third region 1140c and the gyro sensor gs may overlap in the optical axis direction. Therefore, the space efficiency of the circuit elements may be improved.

[0204] In addition, the clip CL may overlap the third region 1140 c in the second direction.

[0205] Fig. 22 is a view for describing a holding force of another type of actuation of a camera actuator according to an embodiment, Fig.23 is a view for describing another type of actuation of the camera actuator according to the embodiment, Fig.24 It is along Fig.23 A view taken along line DD' in FIG. Fig.25 It is along Fig.23 A view taken along line EE'.

[0206] Reference Figure 22 to Figure 25, the bobbin 1160 can move along the optical axis direction. In this case, the shaft 1151 provided in the retainer 1150 can be positioned adjacent to the second magnet M2 provided in the bobbin 1160. As described above, the shaft 1151 and the second magnet M2 can overlap in a third direction. In addition, the shaft 1151 and the second magnet M2 can form an attraction force with each other. Therefore, the coupling force (e.g., attraction force) between the retainer 1150 coupled to the shaft 1151 and the bobbin 1160 coupled to the second magnet M2 can be maintained. That is, even when the bobbin 1160 moves along the optical axis direction in the retainer 1150, the bobbin 1160 and the retainer 1150 can also maintain coupling to each other.

[0207] The second magnet M2 may be disposed between the second coil C2 and the shaft 1151. That is, the second magnet M2 may face the second coil C2. In this case, the second magnet M2 may be located inside the second coil C2. In this case, the inside may correspond to a direction toward the optical axis, and the outside may correspond to a direction opposite to the inside.

[0208] In addition, the substrate portion (specifically, the second region) may be located outside the second coil. Therefore, the substrate portion, the second coil C2, and the second magnet M2 may be located sequentially inside. In addition, in an embodiment, the second region 1140b may be located between the first coil C1 and the first magnet M1. In addition, the second coil C1 may also be located inside the second region 1140b. In this case, the first coil C1 and the first magnet M1 may be arranged spaced apart from each other. In addition, the second region 1140b or the substrate portion 1140 may be located between the first coil C1 and the first magnet M1.

[0209] In addition, the first coil C1 and the first magnet M1 may overlap in a direction perpendicular to the optical axis. In addition, the second region 1140b or the substrate portion 1140 may be located between the Hall sensor and the first magnet M1. In other words, the first magnet M1 may be located outside the second region 1140b and the first coil C1. In addition, the second region 1140b may be located outside the first coil C1.

[0210] Fig.26 are multiple perspective views of a holder in a camera actuator according to an embodiment.

[0211] Reference Fig.26 , the holder 1150 may include a shaft hole or a shaft groove in which the shaft 1151 is seated. The shaft groove may be positioned adjacent to the holder groove 1150g. Therefore, the attraction between the second magnet and the shaft may be increased.

[0212] Fig. 27 is a perspective view of a mobile terminal to which a camera module according to an embodiment is applied.

[0213] like Fig. 27 As shown, the mobile terminal 1500 of the embodiment may include a camera module 1000 , a flash module 1530 , and an auto focusing device 1510 disposed on the back.

[0214] The camera module 1000 may include an image capturing function and an auto focus function. For example, the camera module 1000 may include an auto focus function using an image.

[0215] The camera module 1000 processes image frames of still images or moving images acquired through an image sensor in a capture mode or a video call mode.

[0216] The processed image frames may be displayed on a certain display portion and stored in a memory.A camera (not shown) may also be provided on the front of the mobile terminal body.

[0217] For example, the camera module 1000 may include a first camera module 1000A and a second camera module 1000B, and OIS and AF functions may be implemented by the first camera module 1000A.

[0218] The flash module 1530 may include a light emitting element that emits light internally. The flash module 1530 may be operated by a camera operation of the mobile terminal or by a user's control.

[0219] The auto focusing device 1510 may include one of the packages of a surface emitting laser element as a light emitting portion.

[0220] The auto focus device 1510 may include an auto focus function using laser. The auto focus device 1510 may be mainly used in a situation where the auto focus function using the image of the camera module 1000 is degraded, for example, in a close distance of 10 m or less or in a dark environment.

[0221] The auto-focusing device 1510 may include a light emitting part including a vertical cavity surface emitting laser (VCSEL) semiconductor element and a light receiving part such as a photodiode that converts light energy into electric energy.

[0222] Fig.28 is a perspective view of a vehicle to which a camera module according to an embodiment is applied.

[0223] For example, Fig.28 1 is an external view of a vehicle including a vehicle driving assistance device to which the camera module 1000 according to the embodiment is applied.

[0224] Reference Fig.28The vehicle 700 of the embodiment may include wheels 13FL and 13FR rotated by a power source and a specific sensor. The sensor may be a camera sensor 2000, but is not limited thereto.

[0225] The camera sensor 2000 may be a camera sensor to which the camera module 1000 according to the embodiment is applied. The vehicle 700 of the embodiment may acquire image information through the camera sensor 2000 that captures a front image or a surrounding image, and may determine a lane unrecognized situation using the image information and generate a virtual lane if a lane is not recognized.

[0226] For example, the camera sensor 2000 may photograph the front of the vehicle 700 to acquire a front image, and a processor (not shown) may analyze an object included in the front image to acquire image information.

[0227] For example, when the image captured by the camera sensor 2000 includes an object such as a lane, an adjacent vehicle, a traffic obstacle, or a median strip corresponding to an indirect road marking, a curb, a roadside tree, etc., the processor can detect the object and include the object in the image information. In this case, the processor can obtain distance information of the object detected by the camera sensor 2000 to further supplement the image information.

[0228] The image information may be information related to an object captured in an image. The camera sensor 2000 may include an image sensor and an image processing module.

[0229] The camera sensor 2000 may process a still image or a moving image acquired by an image sensor such as a complementary metal oxide semiconductor (CMOS) or a charge coupled device (CCD).

[0230] The image processing module may process a still image or a moving image acquired through the image sensor to extract necessary information and transmit the extracted information to the processor.

[0231] In this case, the camera sensor 2000 may include a stereo camera to improve the measurement accuracy of the object and ensure more information such as the distance between the vehicle 700 and the object, but is not limited thereto.

[0232] Although the embodiments have been mainly described above, these embodiments are only examples and are not intended to limit the present invention, and it can be seen that various modifications and applications not illustrated herein can be made by those skilled in the art without departing from the essential features of the present invention. For example, each of the components specifically shown in the embodiments can be modified and implemented. In addition, it should be understood that differences related to modifications and applications are included within the scope of the present invention as defined by the appended claims.

Claims

1. A camera device, include: Fixed part; a moving plate disposed on the fixed portion; a first movable portion disposed on the movable plate; a first driving portion that tilts the first movable portion relative to at least one of a first axis and a second axis; a first ball portion disposed between the moving plate and the first movable portion; and a second ball portion, which is disposed between the moving plate and the fixed portion, The first driving part includes a first coil arranged on the first movable part and a first magnet arranged on the fixed part.

2. The camera device according to claim 1, in, The first movable portion includes an image sensor and a substrate portion coupled to the image sensor.

3. The camera device according to claim 2, include: a second movable portion disposed in the first movable portion; as well as a second driving section that moves the second movable section along the optical axis direction, wherein the second driving part comprises a second coil disposed on the first movable part and a second magnet disposed on the second movable part, and The substrate portion includes a first substrate portion and a second substrate portion, the image sensor is coupled to the first substrate portion, and the first coil and the second coil are disposed on the second substrate portion.

4. The camera device according to claim 3, in, The first substrate portion comprises: a main body portion, wherein the image sensor is disposed on the main body portion; and An extension portion, wherein the extension portion is connected to the main body portion and a connector or a terminal is provided on the extension portion.

5. The camera device according to claim 4, in, The second substrate portion includes a first substrate and a second substrate, the first substrate is connected to the first substrate portion, and the first coil is disposed on the first substrate, and the second coil is disposed on the second substrate.

6. The camera device according to claim 5, in, The first coil includes a first unit coil and a second unit coil, and The first substrate includes a first unit substrate and a second unit substrate, the first unit coil is arranged on the first unit substrate, and the second unit coil is arranged on the second unit substrate.

7. The camera device of claim 2, comprising a sensor base disposed between the moving plate and the base plate portion.

8. The camera device according to claim 1, in, The fixed portion includes a cover that accommodates the first movable portion, and The cover includes a first cover coupled to the first magnet and a second cover coupled to the first cover.

9. A camera device, include: build; a movable plate disposed in the cover; A base plate portion disposed on the movable plate; an image sensor disposed on the substrate portion; a holder disposed on the image sensor; a bobbin disposed in the holder; a first magnet disposed on the cover; a second magnet disposed on the spool; a first coil disposed on the base portion and facing the first magnet and a second coil facing the second magnet; a first ball portion disposed between the moving plate and the cover; as well as A second ball portion is disposed between the moving plate and the base portion.

10. The camera device according to claim 9, in, The first ball portion is arranged along a second axial direction, and Wherein, the second ball part is arranged along the first axial direction.

Images