Camera module

Abstract

A camera module according to an embodiment of the present invention includes a substrate, a base disposed on the substrate and including an opening, a lens barrel disposed on the opening of the base and on the substrate, a holder disposed on the substrate and within the opening of the base, and a filter coupled to the holder, wherein the holder includes a damper member disposed in a position overlapping the bottom surface of the lens barrel in the optical axis direction.

Description

[Technical Field]

[0001] The present invention relates to a camera module. [Background technology]

[0002] Ultra-compact, low-power camera modules are difficult to apply voice coil motor (VCM) technology, which is used in existing general camera modules, and as a result, research into this technology has been actively conducted.

[0003] Camera modules mounted on small electronic products such as smartphones are subject to frequent impacts during use, and may be subject to slight vibrations due to the user's hand movements during shooting. In consideration of these issues, technology has recently been developed to install an anti-shake device in the camera module. Summary of the Invention [Problem to be solved by the invention]

[0004] The technical problem that the present invention aims to solve is to provide a miniaturized camera module. [Means for solving the problem]

[0005] In order to solve the above technical problems, a camera module according to an embodiment of the present invention includes a substrate, a base disposed on the substrate, a lens barrel disposed in the base, a holder disposed on the substrate, and a filter disposed on the holder, and the holder includes a damper member disposed on an upper surface thereof.

[0006] The base may include an opening through which the lens barrel passes, and the damper member may be arranged within the opening of the base so as to come into contact with a lower surface of the lens barrel as the lens barrel moves in the optical axis direction.

[0007] The top surface of the holder may include a recessed groove, and the damper member may be disposed in the groove of the holder.

[0008] The damper member may be disposed so that at least a portion thereof is spaced apart from an inner surface of the groove of the holder.

[0009] The holder may include a mounting portion on which the filter is placed, and a step may be formed between an upper surface of the holder and the mounting portion.

[0010] The holder may include an inner surface connecting the upper surface and the mounting portion, the outer surface of the filter facing the inner surface of the holder, and the holder may include a recessed portion on the inner surface that recesses toward the outer surface.

[0011] The base may include a first opening, the holder may be positioned below the first opening of the base, and the holder may include a second opening opposite the first opening in which the filter is positioned.

[0012] The device may include a housing arranged on the base and a bobbin arranged within the housing, the base including a housing portion that accommodates the holder therein, and the holder may be arranged at a distance within the housing portion of the base.

[0013] In order to solve the above technical problems, a camera module according to an embodiment of the present invention includes a substrate, an image sensor arranged on the substrate, a base arranged on the substrate, a housing arranged on the base, a lens driving device arranged on the housing and including a bobbin movable in an optical axis direction, a lens barrel arranged within the bobbin, a holder arranged between the substrate and the base, and a filter arranged on the holder and facing the image sensor, and a damper member is arranged on an upper surface of the holder, and the damper member may be formed of an adhesive.

[0014] The damper member may include a plurality of damper members spaced apart from one another on an upper surface of the holder, and the plurality of damper members may be arranged to face a lower surface of the lens barrel.

[0015] The damper member may be disposed in a groove recessed in an upper surface of the holder, and at least a portion of the damper member may be spaced apart from an inner surface of the groove of the holder.

[0016] The damper member may include a groove that divides the upper surface into a plurality of regions.

[0017] In order to solve the above technical problems, a camera module according to an embodiment of the present invention includes a substrate, a base disposed on the substrate and including an opening, a lens barrel disposed on the opening of the base and on the substrate, a holder disposed on the substrate and within the opening of the base, and a filter coupled to the holder, wherein the holder includes a damper member disposed in a position overlapping the bottom surface of the lens barrel in the optical axis direction.

[0018] The holder may include a mounting member to which the filter is attached and a base member arranged on the outside of the mounting member, the mounting member including a protrusion protruding from the outer surface and a hole formed in the protrusion, and the damper member may be arranged in the hole of the mounting member.

[0019] The base member may include a first recessed portion recessed in an outer surface thereof, and the damper member may be disposed within the first recessed portion and spaced apart from an inner wall of the first recessed portion.

[0020] An upper surface of the damper member may be positioned higher than an upper surface of the base member.

[0021] The height of the damper member may be greater than the height of the base member.

[0022] The lens barrel may include a cover member formed on the base and housing the lens barrel, the holder, and the filter, the cover member being directly coupled to the base and not directly coupled to the holder.

[0023] An outer surface of the holder and an inner surface of the opening in the base may be spaced apart from each other.

[0024] The distance from the optical axis of the lens barrel to the damper member may be smaller than the distance from the optical axis to the inner surface of the opening in the base.

[0025] The ink jet head may include a housing disposed on the base and a bobbin disposed in the housing, the bobbin including a stopper on a lower surface thereof that faces a part of the base.

[0026] The distance from the optical axis of the lens barrel to the stopper may be greater than the distance from the optical axis to the damper member.

[0027] The bobbin may include a bobbin opening through which the lens barrel passes, and the bobbin may not overlap with the damper member in the optical axis direction, but the bobbin opening may overlap with the damper member in the optical axis direction.

[0028] The distance from the optical axis of the lens barrel to the inner wall of the bobbin opening may be greater than the distance from the optical axis to the damper member.

[0029] The damper member may come into contact with the lower surface of the lens barrel by moving in the optical axis direction.

[0030] The damper member may include a plurality of dampers arranged in the holder, and the distances from the optical axis of the lens barrel to the plurality of dampers may be the same.

[0031] The holder may be positioned within an area defined by the substrate and the opening in the base.

[0032] The base and the holder may overlap in a direction perpendicular to the optical axis direction.

[0033] The lower surface of the lens barrel does not need to overlap with the base in the optical axis direction.

[0034] The damper member may include a recessed groove in an upper surface.

[0035] In order to solve the above technical problems, a camera module according to an embodiment of the present invention includes a substrate, an image sensor arranged on the substrate, a base arranged on the substrate and including an opening, a housing arranged on the base, a lens driving device arranged in the housing and including a bobbin movable in the optical axis direction, a lens barrel arranged in the bobbin, a holder arranged in the lens driving device, and a filter arranged on the holder and facing the image sensor, wherein the holder includes a damper member arranged at a position opposite to the bottom surface of the lens barrel, and the holder may be arranged in an area defined by the opening of the base and the substrate.

[0036] The bobbin of the lens driving device may overlap with the holder in the optical axis direction of the lens barrel, and the base and the housing of the lens driving device may not overlap with the holder in the optical axis direction.

[0037] The base of the lens driving device may overlap the holder in a direction perpendicular to the optical axis direction.

[0038] The holder may include a first recessed portion recessed in an outer surface thereof, and the damper member may be disposed within the first recessed portion and spaced apart from an inner wall of the first recessed portion.

[0039] The holder may include an inner surface connecting an upper surface and a surface on which the filter is placed, an outer surface of the filter facing the inner surface of the holder, and the holder may include a second recess in the inner surface that is recessed toward the outer surface.

[0040] The damper member may include a first groove that divides the upper surface into a plurality of regions.

[0041] The upper surface of the holder may include a first surface, a second surface opposite the first surface, a third surface, and a fourth surface opposite the third surface, and the damper members may include first and second damper members arranged in central portions of the first and second surfaces, third and fourth damper members arranged symmetrically with respect to the central portion of the third surface, and fifth and sixth damper members arranged symmetrically with respect to the central portion of the fourth surface.

[0042] The first to sixth damper members may be arranged so as to come into contact with the lower surface of the lens barrel when the lens barrel moves in the optical axis direction. [Effects of the Invention]

[0043] According to this embodiment, the holder is disposed inside the base of the lens driving device, and the lower surface of the base is directly coupled to the upper surface of the circuit board, thereby reducing the height of the camera module.

[0044] Furthermore, by arranging a damper member in the holder, it is possible to absorb the impact caused by movement of the lens barrel in the optical axis direction, thereby preventing damage to the filter, and thus preventing damage to the lens and a decrease in resolution.

[0045] In addition, the damper member made of silicon material can be integrated into the holder by insert injection, enhancing the cushioning effect.

[0046] In addition, the cross air vent design applied to the damper member prevents the lens and lens barrel from sticking to the silicone damper member, making it easier to attach and detach. [Brief explanation of the drawings]

[0047] [Figure 1] FIG. 2 is an exploded view of the camera module according to the embodiment.

[0048] [Figure 2] FIG. 2 is a perspective view of the camera module of FIG. 1.

[0049] [Figure 3A] FIG. 2 is an exploded view of the lens driving device according to the embodiment.

[0050] [Figure 3B] FIG. 10 is an exploded view of a lens driving device according to another embodiment.

[0051] [Figure 3C] FIG. 10 is an exploded view of a lens driving device according to still another embodiment.

[0052] [Figure 3D] FIG. 10 is an exploded view of a lens driving device according to still another embodiment.

[0053] [Figure 4] FIG. 2 is a cross-sectional view of the camera module according to the first embodiment.

[0054] [Figure 5] FIG. 2 is a perspective view of a holder according to the first embodiment.

[0055] [Figure 6] FIG. 2 is a diagram for explaining the arrangement of a holder and a lens barrel according to the first embodiment.

[0056] [Figure 7A]FIG. 10 is a cross-sectional view of a camera module according to the second embodiment.

[0057] [Figure 7B] FIG. 10 is a diagram showing a state in which a base and a holder are arranged on a substrate according to the second embodiment.

[0058] [Figure 8] FIG. 10 is a perspective view of a holder according to the second embodiment.

[0059] [Figure 9] FIG. 10 is a perspective view of a mounting member according to the second embodiment.

[0060] [Figure 10] FIG. 10 is a perspective view of a damper member according to the second embodiment.

[0061] [Figure 11] 10A to 10C are diagrams showing a manufacturing process of the holder according to the second embodiment.

[0062] [Figure 12] FIG. 10 is a diagram for explaining the arrangement of a holder and a lens barrel according to the second embodiment.

[0063] [Figure 13] 1 is a perspective view of a portable terminal according to an embodiment of the present invention;

[0064] [Figure 14] FIG. 14 is a configuration diagram of the portable terminal shown in FIG. DETAILED DESCRIPTION OF THE INVENTION

[0065] DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Preferred embodiments of the present invention will now be described in detail with reference to the accompanying drawings.

[0066] However, the technical concept of the present invention is not limited to the described embodiments, but may be embodied in various other forms, and one or more of the components may be selectively combined or substituted between the embodiments within the scope of the technical concept of the present invention.

[0067] Furthermore, unless otherwise clearly defined, the terms used in this embodiment (including technical and scientific terms) may be interpreted in the sense that they are commonly understood by a person having ordinary knowledge in the field of technology to which this embodiment belongs, and commonly used terms, such as dictionary-defined terms, may be interpreted in light of their meaning in the context of the relevant technology.

[0068] Furthermore, the terms used in the present embodiment are intended to explain the embodiment and are not intended to limit the present invention.

[0069] In this specification, unless otherwise specified in the phrase, the singular form also includes the plural form, and when it says "at least one (or one or more) of A, B, and C," it may include one or more of all combinable combinations of A, B, and C.

[0070] Furthermore, when describing the components of this embodiment, terms such as first, second, A, B, (a), (b), etc. are used only to distinguish the component from other components, and the terms do not limit the essence, order, or sequence of the components.

[0071] In addition, when it is described that one component is "coupled," "coupled," or "connected" to another component, this may include not only the case where one component is "coupled," "coupled," or "connected" directly to the other component, but also the case where one component is "coupled," "coupled," or "connected" by yet another component between the one component and the other component.

[0072] Furthermore, when it is stated that something is formed or arranged "above (above)" or "below (below)" each component, "above (above)" or "below (below)" includes not only the case where two components are in direct contact with each other, but also the case where one or more other components are formed or arranged between the two components. Furthermore, when it is expressed as "above (above)" or "below (below)," it may mean not only the upper direction but also the lower direction based on one component.

[0073] Hereinafter, a camera module according to an embodiment and an optical device including the same will be described with reference to the accompanying drawings. For convenience of explanation, the camera module according to the embodiment will be described using a Cartesian coordinate system (x, y, z). However, other coordinate systems may be used for explanation, and the embodiment is not limited thereto. In the drawings, the x-axis and y-axis refer to directions perpendicular to the z-axis, which is the direction of the optical axis OA. The z-axis direction, which is the direction of the optical axis OA, may be referred to as the "first direction," the x-axis direction as the "second direction," and the y-axis direction as the "third direction."

[0074] The "image stabilization function" applied to the camera module of a mobile device such as a smartphone or tablet PC may be a function that moves the lens in a direction perpendicular to the optical axis direction or tilts the lens based on the optical axis so as to offset vibrations (or movements) caused by the user's hand shake.

[0075] Furthermore, the "autofocusing function" may be a function that automatically adjusts the focus on a subject by moving the lens in the optical axis direction depending on the distance to the subject in order to obtain a clear image of the subject on the image sensor.

[0076] 1 is an exploded view of a camera module according to this embodiment, FIG. 2 is a perspective view of the camera module of FIG. 1, FIG. 3A is an exploded view of a lens driving device according to one embodiment, FIG. 3B is an exploded view of a lens driving device according to another embodiment, FIG. 3C is an exploded view of a lens driving device according to yet another embodiment, FIG. 3D is an exploded view of a lens driving device according to yet another embodiment, FIG. 4 is a cross-sectional view of a camera module according to this first embodiment, FIG. 5 is a perspective view of a holder according to this first embodiment, FIG. 6 is a diagram for explaining the arrangement of a holder and a lens barrel according to this first embodiment, and FIG. 7A is a cross-sectional view of a lens driving device according to this first embodiment. 7A is a cross-sectional view of a camera module according to the second embodiment, FIG. 7B is a diagram showing the arrangement of a base and a holder on a substrate according to the second embodiment, FIG. 8 is an oblique view of a holder according to the second embodiment, FIG. 9 is an oblique view of a mounting member according to the second embodiment, FIG. 10 is an oblique view of a damper member according to the second embodiment, FIG. 11 is a diagram showing the manufacturing process of a holder according to the second embodiment, FIG. 12 is a diagram for explaining the arrangement of a holder and a lens barrel according to the second embodiment, FIG. 13 is an oblique view of a portable terminal according to this embodiment, and FIG. 14 is a structural diagram of the portable terminal shown in FIG. 13.

[0077] The camera module 200 may include a lens module 400 , a lens driver 100 , a filter 610 , a holder 310 , a circuit board 800 , and an image sensor 810 .

[0078] The camera module 200 can capture one or more images. The camera module 200 can be a camera assembly. The camera module 200 can be a camera unit. The camera module 200 can include a lens driving device 100. The lens driving device 100 can drive the lens module 400 and move the lens module 400 in the optical axis direction. The lens module 400 can also be referred to as a "lens," a "lens unit," or a "lens assembly." The lens module 400 can be coupled to the lens driving device 100 and can include at least one of a lens unit or a lens barrel 414.

[0079] The camera module 200 may include a sensor driving device. The camera module 200 may include a voice coil motor (VCM). The camera module 200 may include an autofocus assembly. The camera module 200 may include an image stabilization assembly. The camera module 200 may include an autofocus device. The camera module 200 may include an image stabilization device. The camera module 200 may include an actuator. The camera module 200 may include a lens driving actuator. The camera module 200 may include a sensor driving actuator. The camera module 200 may include an autofocus actuator. The camera module 200 may include an image stabilization actuator.

[0080] The camera module 200 may include a circuit board 800. The circuit board 800 may be a main board. The circuit board 800 may be a printed circuit board (PCB). The circuit board 800 may be connected to a power supply of the optical device. The circuit board 800 may include a connector connected to the power supply of the optical device. The circuit board 800 may have circuit elements 95 (or electronic elements) arranged thereon. The circuit board 800 may include an adhesive member 612 for connecting or adhering the lens driving device 100 and the circuit board 810.

[0081] The camera module 200 may include a base 210. The base 210 may be disposed on the circuit board 800. The base 210 may be disposed on the circuit board 800. The base 210 may be disposed on the circuit board 800. The base 210 may be fixed to the circuit board 800. The base 210 may be coupled to the circuit board 800. The base 210 may be adhered to the circuit board 800 by an adhesive member 612.

[0082] The camera module 200 may include an image sensor 810. The image sensor 810 may be disposed on the circuit board 800. The image sensor 810 may be disposed between the circuit board 800 and the base 210. The image sensor 810 may be electrically connected to the circuit board 800. The image sensor 810 may be disposed below the lens module 400.

[0083] Light passing through the lens module 400 and the filter 610 may be incident on the image sensor 810 to form an image. The image sensor 810 may include an effective image area. The image sensor 810 may convert light incident on the effective image area into an electrical signal. The image sensor 810 may include one or more of a charge coupled device (CCD), a metal oxide semi-conductor (MOS), a CPD, and a CID.

[0084] The camera module 200 may include a filter 610. The filter 610 may be disposed between the lens unit 400 and the image sensor 810. The filter 610 may be disposed in the holder 310. The filter 610 may be disposed in a window 318 of the holder 310. The filter 610 can block light of a specific frequency band from passing through the lens from entering the image sensor 810. The filter 610 may include an infrared cut-off filter (IRCF). The filter 610 can block infrared light from entering the image sensor 810.

[0085] 3A is an AF lens driving device, but the embodiment is not limited to this. In other embodiments, the lens driving device may be an OIS lens driving device. Here, the meanings of "for AF" and "for OIS" may be as explained in the AF camera module and OIS camera module.

[0086] In addition, in FIG. 3A, the bobbin and the housing are supported by an elastic member, but this is not limiting, and in other embodiments, they may be supported by balls or ball bearings.

[0087] 3A , the lens driving device 100 may include a housing 140, a bobbin 120 disposed within the housing 140 and for mounting the lens module 400, a coil 110 disposed on the bobbin 120, a magnet 130 disposed on the housing 140 and facing the coil 110, at least one upper elastic member 150 coupled to an upper portion of the bobbin 120 and an upper portion of the housing 140, at least one lower elastic member 160 coupled to a lower portion of the bobbin 120 and a lower portion of the housing 140, and a base 210. In another embodiment, the coil may be disposed in the housing, and the magnet may be disposed in the bobbin.

[0088] The lens driving device 100 may further include a cover member 300 coupled to the base 210 to provide a space for accommodating the components of the lens driving device 100 together with the base 210. The cover member 300 may be a "cover can" or a "shielding can." The cover member may be made of a metal material. The cover member 300 can block electromagnetic interference (EMI). The cover member 300 may be electrically connected to the circuit board 800. The cover member 300 may be grounded to the circuit board 800. The cover member 300 may include a top plate 301, a side plate 302 coupled to the top plate 301, and an opening 303 formed in the top plate 301.

[0089] The base 210 is disposed below the bobbin 120 (or the housing 140). The housing 140 may be disposed on the base 210. The base 210 may be coupled to the housing 140. In other embodiments, the base 210 and the housing 140 may be integrally configured, and such a configuration may be defined as the "base" or the "housing."

[0090] The base 210 may have an opening 201 corresponding to the opening of the bobbin 120 and / or the opening of the housing 140, and may have a shape, for example, a rectangular shape, that matches or corresponds to the cover member 300. The opening 201 of the base 210 may be in the form of a through-hole that penetrates the base 210 in the optical axis direction. A pillar portion that protrudes toward the housing 140 may be formed on the upper surface of the base 210.

[0091] The base 210 may include a post protruding a predetermined height from one or more corners. For example, the base 210 may include four posts located at the four corners. In other embodiments, the posts may be omitted. The posts of the base 210 may be inserted into, fastened to, or bonded to grooves formed in the lower corners of the housing 140 using an adhesive such as epoxy or silicone.

[0092] The coil 110 may be connected to at least one of the upper elastic member 150 and the lower elastic member 160. The lower elastic member 160 may include two lower elastic members, i.e., a lower spring. The coil 110 may be connected to the two lower elastic members.

[0093] The upper elastic member 150 may include a first inner frame (or a first inner portion) coupled to the bobbin 120, a first outer frame (or a first outer portion) coupled to the housing 140, and a first connecting portion connecting the first inner frame and the first outer frame. The lower elastic member may include a second inner frame (or a second inner portion) coupled to the bobbin 120, a second outer frame (or a second outer portion) coupled to the housing 140, and a second connecting portion connecting the second inner frame and the second outer frame. One end of the coil 110 may be coupled to the second inner frame of the first lower elastic member, and the other end of the coil 110 may be coupled to the second inner frame of the second lower elastic member.

[0094] The first lower elastic member may include a first terminal, and the second lower elastic member may include a second terminal. A driving signal for the coil 110 may be input from the outside through the first and second terminals of the first and second lower elastic members.

[0095] The first terminal may be bent from the second outer frame of the first lower elastic member to the outer surface (or “first outer surface”) of the base 210. The second terminal may be bent from the second outer frame of the second lower elastic member to the outer surface (or “first outer surface”) of the base 210. At least a portion of each of the first and second terminals may be disposed on the outer surface of the holder 310 and may be electrically connected to the circuit board 800.

[0096] The circuit board 800 may include pads (or terminals) that can provide a driving signal to the coil 110 through the first and second terminals of the first and second lower elastic members and are electrically connected to the first and second terminals by solder or the like.

[0097] In other embodiments, the terminals may not be integrally formed with the lower elastic member, but may be separately disposed on the base 210, and the terminals may be joined to the outer frame of the lower elastic member by solder or the like, and may be electrically connected.

[0098] The coil 110 may be disposed on an outer surface of the bobbin 120. For example, but not limited to, the coil 110 may be wound in a ring shape on the outer surface of the bobbin 120. A drive signal may be provided to the coil 110. The drive signal may be in the form of a current or a voltage, and may include at least one of a direct current signal and an alternating current signal.

[0099] The magnet 130 may be disposed on a side of the housing 140. In other embodiments, the magnet may be disposed at a corner or corner portion of the housing. The magnet 130 may include multiple magnets 130-1 to 130-3, and the magnets 130 disposed in the housing 140 may correspond to, face, or overlap the coil 110 in a direction perpendicular to the optical axis OA.

[0100] The movable part may move in the optical axis direction due to the interaction between the magnet 130 and the coil 110 to which the drive signal is provided. The displacement of the bobbin 120 in the optical axis direction is controlled by the drive signal provided to the coil 110, thereby realizing AF drive.

[0101] The movable part may include the bobbin 120 and a configuration coupled thereto. For example, the movable part may include the bobbin 120 and the coil 110. Furthermore, for example, the movable part may further include a lens module 400.

[0102] For AF feedback driving, the lens driving device 100 of the camera module 200 may further include a sensing magnet (not shown) disposed on the bobbin, and an AF position sensor (e.g., a Hall sensor (not shown)) disposed on the housing, base, or cover member, corresponding to, facing, or overlapping the sensing magnet. The lens driving device 100 may further include an AF circuit board disposed on the housing 140 on which the AF position sensor is mounted. In this case, the circuit board may be electrically connected to the coil 110 and the AF position sensor, and drive signals may be provided to the coil 110 and the AF position sensor via the circuit board.

[0103] When the AF position sensor is implemented as a Hall sensor alone, an external driving signal may be provided to the circuit board, and the driving signal may be provided to the coil 110 through the circuit board and two elastic members connected to the circuit board.

[0104] If the AF position sensor is a driver IC including a Hall sensor, a driving signal may be provided from the AF position sensor to a circuit board, and the driving signal may be provided to the coil 110 through two elastic members connected to the circuit board.

[0105] The AF position sensor can output an output signal based on the result of sensing the strength of the magnetic field of the sensing magnet due to the movement of the bobbin 120, and the output of the AF position sensor can be transmitted to a circuit board or output to the outside through the circuit board.

[0106] In another embodiment, the AF position sensor may be disposed on the bobbin, and the sensing magnet may be disposed on the housing. Also, the lens driving device 100 may further include a balancing magnet disposed on the bobbin 120 and opposite the sensing magnet.

[0107] A camera module according to another embodiment may include a housing that is coupled to the lens module 400 instead of the lens driving device 100 of FIG. 1 and fixes the lens module 400, and the housing may be coupled or attached to the top surface of the circuit board 800.

[0108] The housing attached or fixed to the upper surface of the circuit board 800 does not move, and the position of the housing attached to the circuit board 800 and the lens module coupled to the housing may be fixed.

[0109] The lens driving device 100A shown in FIG. 3B may be a lens driving device for an OIS.

[0110] Referring to FIG. 3B, the lens driving device 100A may include a housing 140A, a bobbin 120A disposed within the housing 140A for mounting the lens module 400, a first coil 110A disposed on the bobbin 120A, a magnet 130A disposed in the housing 140A and facing the first coil 110A, at least one upper elastic member 150A coupled to an upper portion of the bobbin 120A and an upper portion of the housing 140A, at least one lower elastic member 160A coupled to a lower portion of the bobbin 120A and a lower portion of the housing 140A, a second coil 230 disposed below the housing 140A and / or the lower elastic member 160A, a circuit board 250 disposed below the second coil 230, and a base 210 disposed below the circuit board 250.

[0111] The lens driving device 100A may include a support member 220 that connects the upper elastic member 150A and the circuit board 250. The lens driving device 100A may include a sensing magnet 180 disposed on the bobbin 120A and a first position sensor 170 disposed on the housing 140. The lens driving device 100A may include a balancing magnet 185 disposed on the bobbin 120A.

[0112] The descriptions of the bobbin 110, coil 120, magnet 130, housing 140, AF position sensor, sensing magnet, and balancing magnet in FIG. 3A may be applied to the embodiment of FIG. 3B.

[0113] Lens driving device 100A may include a circuit board 190 disposed in housing 140A, and circuit board 190 may be disposed on either side of housing 140A. First position sensor 170 may be disposed on circuit board 190 and may be electrically connected to circuit board 190. In addition, the description regarding the AF position sensor and circuit board in FIG. 3A may also be applied to the embodiment in FIG. 3B.

[0114] The lens driving device may further include a capacitor 195 disposed on the circuit board 190. The capacitor 195 may be connected in parallel to two input terminals of the first position sensor 170 for providing power or driving signals, or two terminals of the circuit board 190 electrically connected to the two input terminals of the first position sensor 170. The capacitor 195 may protect the first position sensor 170 from high-frequency noise or ESD that may flow in from the outside.

[0115] The upper elastic member 150A may include a plurality of upper elastic members 150-1 to 150-4. The plurality of elastic members may be electrically connected to the circuit board 190. For example, the four upper elastic members 150-1 to 150-4 may be coupled to and electrically connected to corresponding ones of the first to fourth terminals of the circuit board 190.

[0116] The first position sensor 170 may be implemented as a Hall sensor alone or in the form of a driver IC including a Hall sensor. The first position sensor 170 may include four terminals, and the four terminals of the first position sensor may be electrically connected to first to fourth terminals of the circuit board 190.

[0117] Magnet 130A may include multiple magnets 130-1A to 130-4A arranged at the corners of housing 140A, but is not limited to this, and in other embodiments, the magnets may be arranged on the sides of housing 140A, as in FIG. 3A.

[0118] The support member 220 may include a plurality of support members 220-1 to 220-4. The support members 220-1 to 220-4 may be arranged at corner portions or corners of the housing 140A. Grooves or holes may be formed in the corners of the housing 140A to avoid spatial interference with the support members 220, and the support members 220 may pass through the grooves or holes.

[0119] One end of each of the plurality of support members 220-1 to 220-4 may be coupled to or electrically connected to a corresponding one of the plurality of upper elastic members 150-1 to 150-4, and the other end of each of the plurality of support members 220-1 to 220-4 may be coupled to or electrically connected to the circuit board 250 or the circuit member 231.

[0120] The circuit board 190 may be electrically connected to the circuit board 250 by the plurality of upper elastic members 150-1 to 150-4 and the support members 220-1 to 220-4, and thus the first position sensor 170 may be electrically connected to the circuit board 250.

[0121] The lower elastic member 160 may include two lower elastic members 160-1A and 160-2A and may be electrically connected to the first coil 110A. The first coil 110A may be electrically connected to the circuit board 250 or the first position sensor 170. A driving signal may be supplied or transmitted to the first coil 120 from the first position sensor 170 or the circuit board 250.

[0122] The second coil 230 may be disposed below the bobbin 120A and / or the housing 140A. For example, the second coil 230 may be disposed below the magnet 130A. The second coil 230 may include coil units 230-1 to 230-4 that face the magnets 130-1A to 130-4A disposed in the housing 140A in the optical axis direction or that overlap with the magnets 130-1A to 130-4A in the optical axis direction.

[0123] For example, the second coil 230 may include a circuit member 231 disposed on the circuit board 250, and a plurality of coil units 230-1 to 230-4 formed on the circuit member 231. Here, the circuit member 231 may be expressed as a "board," a "circuit board," or a "coil board." In other embodiments, the second coil 230 may omit the circuit member 231 and include the coil units 230-1 to 230-4. The second coil 230 may be electrically connected to the circuit board 250 and may receive power or a drive signal from the circuit board 250.

[0124] Interaction between the magnets 130-1A to 130-4A and the second coils 230-1 to 230-4 to which the drive signals are provided allows the housing 140A to move in a second and / or third direction, for example, the X-axis and / or Y-axis directions, thereby enabling image stabilization.

[0125] The circuit board 250 is disposed on the upper surface of the base 210A and may have openings corresponding to the openings of the bobbin 120A, the openings of the housing 140A, and / or the openings 201A of the base 210. The openings of the circuit board 250 may be through-holes or hollows.

[0126] The circuit board 250 may be disposed on the upper surface of the base 210A and may include a body having an opening, and at least one terminal surface 253 bent from the body to the outer surface of the base 210A. A plurality of terminals 251 for receiving an electrical signal from the outside or transmitting an electrical signal to the outside may be formed on the terminal surface 253 of the circuit board 250. The plurality of terminals 251 of the circuit board 250 may be electrically connected to at least one of the first coil 120, the first position sensor 170, the circuit board 190, the second position sensor 240, and the second coil 230.

[0127] The base 210A may include an opening 201A. The description regarding the base 210 in the embodiment of FIG. 3A may apply to FIG. 3B. In other embodiments, the base 210A and the housing 140A may be integrally configured, and such a configuration may be defined as the "base" or the "housing." The corners of the base 210A may be formed with escape portions 212 in the form of grooves, recessed grooves, or holes to avoid spatial interference with the support member 220.

[0128] The lens driving device 100A may further include a second position sensor 240 electrically connected to the circuit board 250. The second position sensor 240 may include two sensors 240a and 240b and may be electrically connected to the circuit board 250. Each of the two sensors 240a and 240b may be implemented as a position detection sensor alone, such as a Hall sensor, or may be implemented in the form of a driver including a Hall sensor. The base 210A may have grooves 215 for accommodating the sensors 240a and 240b.

[0129] Each of the sensors 240a and 240b can sense the strength of the magnetic field of the magnets 130-1A to 130-4A caused by the movement of the housing 140 in a direction perpendicular to the optical axis, and output an output signal according to the sensed result. The displacement of the housing 140A in a direction perpendicular to the optical axis can be sensed using the output signals of the sensors 240a and 240b, and the controller 780 can perform OIS feedback image stabilization using the output signals of the sensors 240a and 240b.

[0130] The lens driving device 100B shown in FIG. 3C may be a ball-type lens driving device.

[0131] 3C , the lens driving device 100B may include a housing 1400, a bobbin 1230 disposed in the housing 1400 and for coupling with the lens module 400, a coil 1320 disposed in the housing 1400, a magnet 1310 disposed in the bobbin 1230, a ball 1600 disposed between the housing 1400 and the bobbin 1230, and a yoke 1340 disposed in the housing 1400. The ball 1600 may also be referred to as a "ball member" or a "ball bearing."

[0132] The lens driving device 100B may include a cover member 1100 coupled to the housing 1400 so as to cover the outer surface of the housing 1400. The lens driving device 100B may include a position sensor 1350 disposed on the housing 1400. The lens driving device 100B may also include a circuit board 1330 disposed on the housing 1400, and the position sensor 1350 may be mounted on the circuit board 1330 and electrically connected to the circuit board 1330. The description regarding the position sensor in FIGS. 3A and 3B may also apply to the position sensor 1350 in FIG. 3C.

[0133] The bobbin 1230 may have an opening for coupling with the lens module, and the opening of the bobbin 1230 may be in the form of a through-hole that penetrates the bobbin in the optical axis direction. The magnet 1310 may be disposed on the outer surface of the bobbin 1230. A groove in which the magnet 1310 is disposed may be formed on the outer surface of the bobbin 1230.

[0134] The coil 1320 may be disposed on one side 1420 of the housing 1400 facing the magnet 1310. For example, a groove may be formed on one side of the housing 1400 in which the coil 1320 is disposed. In other embodiments, the magnet may be disposed on the housing, and the coil may be disposed on a bobbin.

[0135] The housing 1400 may have an opening 1401 corresponding to the lens module 400, and the opening 1401 of the housing 140 may be in the form of a through-hole that passes through the housing 1400 in the optical axis direction.

[0136] The coil 1320 may be electrically coupled to a circuit board 1330 .

[0137] The ball 1600 can support the bobbin 1230 to move relative to the housing 1400. At least a portion of the ball 1600 can contact at least a portion of the housing 1400 and at least a portion of the bobbin 1230, thereby reducing friction between the housing 1400 and the bobbin 1230.

[0138] The yoke 1340 may be disposed on one side of the housing 1400 and may face the magnet 1310 in a direction perpendicular to the optical axis. For example, the yoke 1340 may be disposed outside the circuit board 1330, and the coil 1320 may be disposed between the yoke 1340 and the magnet 1310.

[0139] The yoke 1340 may be made of a material, such as a magnet or metal, that can generate an attractive force with the magnet 1310, so that an attractive force acts between the yoke 1340 and the magnet 1310 in a direction perpendicular to the optical axis direction. This attractive force allows the ball 1600 to maintain contact with the bobbin 1230 and the housing 1400.

[0140] The housing 1400 may be formed with a first receiving groove 1410 for receiving at least a portion of the ball 1600 or for disposing at least a portion of the ball 1600. The bobbin 1230 may be formed with a second receiving groove 1231 for receiving at least another portion of the ball 1600 or for disposing at least another portion of the ball 1600.

[0141] The first accommodating groove 1410 may be formed on the inner surface or inside of at least one corner of the housing 1400, and the second accommodating groove 1231 may be formed on the outer surface or outside of at least one corner of the bobbin 1230. The first accommodating groove 1410 and the second accommodating groove 1231 may face each other, and the ball 1600 may be disposed between the first accommodating groove 1410 and the second accommodating groove 1231 and may be in contact with each of the first accommodating groove 1410 and the second accommodating groove 1231. The number of balls 1600 disposed between the first accommodating groove 1410 and the second accommodating groove 1231 may be one or more.

[0142] In FIG. 3C, a first accommodating groove may be formed in each of two corners of the housing 1400 that face each other or are located on opposite sides, and a second accommodating groove may be formed in each of two corners of the bobbin 1230 that correspond to the two corners of the housing 140.

[0143] In other embodiments, a first receiving groove may be formed at each of the four corners of the housing 1400, and a second receiving groove may be formed at each of the four corners of the bobbin 1230 corresponding to the four corners of the housing 140.

[0144] In yet another embodiment, a first receiving groove may be formed in each of two corners of the housing 1400 adjacent to the side 1420 of the housing 1400 on which the coil 1320 and / or the circuit board 1330 are disposed.

[0145] Also, second receiving grooves may be formed at two corners of the bobbin 1230 corresponding to the two corners of the two adjacent housings 1400 and the side 1420 of the housing 1400, respectively.

[0146] In yet another embodiment, a first receiving groove may be formed in each of two corners adjacent to a side located opposite the side 1420 of the housing 1400. A second receiving groove may be formed in each of two corners of the bobbin 1230 corresponding to the two corners adjacent to a side located opposite the side 1420 of the housing 1400.

[0147] As shown in Figure 3C, housing 1400 may be embodied as a single body, but is not limited to this. In another embodiment, housing 1400 may include a housing and a base coupled to the housing, as shown in Figures 3A and 3B. In this case, the base may have an opening that is the same as or similar to opening 1401 of housing 1400.

[0148] For convenience of explanation, the following description will be made by taking the base 210 of the lens driving device 100 as an example, but is not limited thereto. The following description may also be applied or analogously applied to the base 210A of the lens driving device 100A and the housing 1400 of the lens driving device 100B.

[0149] FIG. 3D may be a variation 100C of FIG. 3C.

[0150] In FIG. 3D, the balls 1600 may be positioned between two corners adjacent to the side 1420 of the housing 1400 on which the coil 1320 and / or circuit board 1330 are disposed and the corresponding outer surfaces of the bobbin 1230.

[0151] For example, in FIG. 3D , a first accommodating groove 1410 may be formed in each of two corners of the housing 1400 adjacent to a side 1420 of the housing 1400 on which the coil 1320 and / or circuit board 1330 are disposed, and a second accommodating groove 1231 may be formed in corners of the bobbin 1230 corresponding to the two corners of the housing 1400.

[0152] The magnet 1310A may be disposed between the balls 1600 accommodated in the second accommodation grooves 1231 formed at two corners of the bobbin 1230. For example, the magnet 1310A may be disposed between the two second accommodation grooves 1231 formed at two corners of the bobbin 1230.

[0153] FIG. 4 is a cross-sectional view of a camera module according to this embodiment, FIG. 5 is a perspective view of a holder according to this embodiment, and FIG. 6 is a diagram for explaining the arrangement of the holder and lens barrel according to this embodiment.

[0154] The holder 310 may be disposed on the upper surface of the substrate 811. The holder 310 may be disposed inside the base 210. The holder 310 may be disposed at a distance within the base 210. The holder 310 may also be referred to as a filter holder or an inner base. The holder 310 may be disposed inside an opening of the base 210 or an opening of the housing 140 of the lens driving device 100. The holder 310 may be disposed below the lens module 400.

[0155] In the lens driving device 100 shown in Fig. 3A and the lens driving device 100A shown in Fig. 3B, the holder 310 may be disposed in the bases 210 and 210A. In the lens driving device 100B shown in Fig. 3C and the lens driving device 100C shown in Fig. 3D, the holder 310 may be disposed in the housing 1400. Although a base is not shown in Figs. 3C and 3D, a base may be further disposed between the housing 1400 and the substrate 811. In this case, the holder 310 may be disposed inside the opening of the base.

[0156] The base 210, 210A may include a receiving portion that receives the holder 310 therein. The holder 310 may be spaced apart from the receiving portion of the base 210, 210A. The receiving portion of the base 210, 210A may refer to a space in which the holder 310 is placed. The inner surface of the base 210, 210A may face the outer surface of the holder 310.

[0157] The base 210, 210A may include an opening through which the lens barrel 414 passes. The lens barrel 414 can pass through the opening of the base 210, 210A by moving in the optical axis direction. When the lens barrel 414 moves closest to the image sensor 810, it may pass through the opening of the base 210, 210A, and when the lens barrel 414 moves farthest from the image sensor 810, it may not pass through the opening of the base 210, 210A.

[0158] The holder 310 may include an opening 314 corresponding to the image sensor 810. The holder 310 may include an opening 314 corresponding to the filter 610. The size of the opening 314 of the holder 310 may be smaller than the size of the filter 610. The opening 314 of the holder 310 may be located below the opening 201 of the base 210 and may face the opening 201 of the base 210 and / or the lens module 400 in the optical axis direction. The opening 314 of the holder 310 may penetrate the holder 310 in the optical axis direction and may be expressed as a window, a hole, a hollow, or a through-hole. The opening 314 may penetrate the center of the holder 310 and may be positioned to correspond to or face an active area of ​​the image sensor 810. The opening 314 of the holder 310 may correspond to or face an opening of the base 210 or an opening of the housing 140. The size or area of ​​the opening 314 in the holder 310 may be smaller than the size or area of ​​the opening in the base 210 or the opening in the housing 140 .

[0159] The holder 310 may include a mounting portion 312 on which the filter 610 is placed. The mounting portion 312 may form a step with respect to the upper surface of the holder 310. The mounting portion 312 may be positioned lower than the upper surface of the holder 310. The mounting portion 312 may be formed to extend inward of the opening of the holder 310. The holder 310 may include an inner surface connecting the upper surface and the mounting portion 312. When the filter 610 is placed on the mounting portion 312, the outer surface of the filter 610 may face the inner surface of the holder 310.

[0160] The holder 310 may include a recess 313 recessed from the edge of the inner surface connecting the mounting portion 312 and the top surface. The holder 310 may include a recess 313 recessed from the mounting portion 312 toward the outer surface. The recess 313 may prevent overflow of an adhesive such as UV epoxy used to attach the filter 610 to the mounting portion 312.

[0161] The upper surface of the holder 310 may include a recessed groove. The holder 310 may have a plurality of grooves. The grooves of the holder 310 may be regions where pins attached to an injection mold are coupled to eject the product during injection molding. The grooves of the holder 310 may be formed at positions where ejector pins are attached.

[0162] The groove of the holder 310 may be a foreign matter collecting portion 311. The foreign matter collecting portion 311 may be called a dust trap. The foreign matter collecting portion 311 may be formed as a circular depression. The foreign matter collecting portion 311 may be formed as an oval depression. The foreign matter collecting portion 311 can collect foreign matter flowing in from the lens driving device.

[0163] The holder 310 may include a damper member 315 disposed on its upper surface. The damper member 315 may be disposed in the foreign matter collecting part 311. The damper member 315 may be disposed in a groove recessed in the upper surface of the holder 310. The groove of the foreign matter collecting part 311 or the holder 310 may serve to guide the position where the damper member 315 is disposed. When the damper member 315 is disposed in the groove of the foreign matter collecting part 311 or the holder 310, a surplus space into which the damper member 315 can expand may be formed between the damper member 315 and the foreign matter collecting part 311 or the groove to absorb and cushion the impact when the damper member 315 collides with the underside of the lens barrel 414.

[0164] The damper member 315 may be made of hardened epoxy. The damper member 315 may be made of an elastic material. The damper member 315 is a buffer member and may be made of a material that absorbs shock. The damper member 315 may be made of a silicone material and may be attached to the upper surface of the holder 310 with an adhesive.

[0165] Damper member 315 can absorb the impact caused by movement of lens barrel 414 in the optical axis direction, preventing damage to filter 610, and can prevent damage to lens 412 and a decrease in resolution.

[0166] The upper surface of the holder 310 may include a first surface, a second surface opposite the first surface, a third surface, and a fourth surface disposed opposite the third surface. The damper members 315 may include first and second damper members 315-1 and 315-2 and third and fourth damper members 315-3 and 315-4 disposed on both sides of the first and second surfaces so as to be symmetrical about a central portion. The damper members 315 may be disposed at the central portions of the first and second surfaces, and may be disposed on both sides of the third and fourth surfaces so as to be symmetrical about the central portion. The damper members 315 may be disposed at the central portions of the first to fourth surfaces, respectively.

[0167] The damper member 315 may be arranged so as to come into contact with the lower surface of the lens barrel 414 as the lens barrel 414 moves in the optical axis direction. The damper member 315 may be arranged so as to overlap with the lens barrel 414 in the optical axis direction. The damper member 315 may be arranged so as to overlap with the lower surface of the lens barrel 414 in the optical axis direction. The damper member 315 may be arranged so as to face the lower surface of the lens barrel 414. The damper member 315 may be arranged so as to come into contact with the lower surface of the lens barrel 414 as the lens barrel 414 moves in the optical axis direction within the opening of the base 210, 210A.

[0168] A groove may be formed on the upper surface of the damper member 315. The groove of the damper member 315 may be formed in a cross shape on the upper surface. The groove of the damper member 315 may facilitate attachment and detachment when it comes into contact with the lower surface of the lens barrel 414. The groove of the damper member 315 may serve to partition the upper surface of the damper member 315 so as to facilitate attachment and detachment while ensuring a contact area between the damper member 315 and the lower surface of the lens barrel 414. The groove of the damper member 315 may be formed in various shapes, such as a circle with a recessed center in the upper surface or a star shape.

[0169] The camera module according to the first embodiment of the present invention has been described above with reference to Figures 4 to 6. A camera module according to a second embodiment of the present invention will now be described with reference to Figures 7 to 12. The detailed description of the camera module according to the second embodiment of the present invention is based on the detailed descriptions of each embodiment of the camera module according to the first embodiment of the present invention, and names, terms, or functions may be the same as or different from those of the camera module according to the first embodiment of the present invention.

[0170] Figure 7A is a cross-sectional view of a camera module according to this embodiment, Figure 7B is a diagram showing the arrangement of a base and holder on a substrate according to this embodiment, Figure 8 is an oblique view of the holder according to this embodiment, Figure 9 is an oblique view of a mounting member according to this embodiment, Figure 10 is an oblique view of a damper member according to this embodiment, Figure 11 is a diagram showing the manufacturing process of the holder according to this embodiment, and Figure 12 is a diagram for explaining the arrangement of the holder and lens barrel according to this embodiment.

[0171] The holder 2310 may be disposed on the upper surface of the substrate 811. The holder 2310 may be disposed inside the base 210. The holder 2310 may be disposed at a distance within the base 210. The holder 2310 may be disposed within the opening 211 of the base 210. An outer surface of the holder 2310 and an inner surface of the opening 211 of the base 210 may be disposed at a distance from each other. The holder 2310 may be disposed within the lens driving device. The holder 2310 may be disposed in a region defined by the opening 211 of the base 210 and the substrate 811. The holder 2310 may also be referred to as a filter holder or an inner base. The holder 2310 may be disposed inside the opening of the base 210 or the opening of the housing 140 of the lens driving device 100. The holder 2310 may be disposed below the lens module 400. The cover member 300 may be formed on the base 210 and house the lens barrel 414, the holder 2310, and the filter 610. The cover member 300 may be directly coupled to the base 210 or may not be directly coupled to the holder 2310.

[0172] In the lens driving device 100 shown in Fig. 3A and the lens driving device 100A shown in Fig. 3B, the holder 2310 may be disposed in the base 210, 210A. In the lens driving device 100B shown in Fig. 3C and the lens driving device 100C shown in Fig. 3D, the holder 2310 may be disposed in the housing 1400. Although a base is not shown in Figs. 3C and 3D, a base may be further disposed between the housing 1400 and the substrate 811. In this case, the holder 2310 may be disposed inside the opening of the base.

[0173] The bobbin 120 of the lens driving device 100 may overlap with the holder 2310 in the optical axis direction of the lens barrel 414. The base 210 and the housing 140 of the lens driving device 100 do not need to overlap with the holder 2310 in the optical axis direction. The base 210 of the lens driving device 100 may overlap with the holder 2310 in a direction perpendicular to the optical axis direction.

[0174] The base 210, 210A may include a receiving portion that receives the holder 2310 therein. The holder 2310 may be spaced apart from the receiving portion of the base 210, 210A. The receiving portion of the base 210, 210A may refer to a space in which the holder 2310 is placed. The inner surface of the base 210, 210A may face the outer surface of the holder 2310.

[0175] The bases 210 and 210A may include an opening 211 through which the lens barrel 414 passes. The lens barrel 414 can pass through the opening 211 of the bases 210 and 210A by moving in the optical axis direction. When the lens barrel 414 moves closest to the image sensor 810, it may pass through the opening 211 of the bases 210 and 210A, and when the lens barrel 414 moves farthest from the image sensor 810, it may not pass through the opening of the bases 210 and 210A.

[0176] The bobbin 120 may include a bobbin opening that penetrates the lens barrel 414. The bobbin 120 may include a stopper 121 on its lower surface that faces a part of the base 210. The bobbin 120 may not overlap with the damper member 2319 in the optical axis direction. The bobbin opening may overlap with the damper member 2319 in the optical axis direction. In a direction perpendicular to the optical axis, the distance from the optical axis of the lens barrel 414 to the stopper 121 may be greater than the distance from the optical axis to the damper member 2319. In a direction perpendicular to the optical axis, the distance from the optical axis of the lens barrel 414 to the inner wall of the bobbin opening may be greater than the distance from the optical axis to the damper member 2319.

[0177] The holder 2310 may include a base member 2311, a mounting member 2314 connected to the base member 2311, and a damper member 2319. The base member 2311 and the mounting member 2314 may be separate components. If the base member 2311 and the mounting member 2314 are separate components, the base member 2311 and the mounting member 2314 may be made of different materials. The base member 2311 may be made of a plastic material, and the mounting member 2314 may be made of a metal material. The base member 2311 and the mounting member 2314 may be integrally formed. If the base member 2311 and the mounting member 2314 are integrally formed, they may be made of the same material. The holder 2310 may be formed by injection molding, with the mounting member 2314 inserted into the base member 2311. The holder 2310 may have a configuration in which the damper member 2319 and the mounting member 2314 are inserted into the base member 2311 and then injected.

[0178] The base member 2311 may include an opening 2318 corresponding to the image sensor 810. The base member 2311 may include an opening 2318 corresponding to the filter 610. The size of the opening 2318 of the base member 2311 may be smaller than the size of the filter 610. The opening 2318 of the base member 2311 may be located below the opening 201 of the base 210 and may face the opening 201 of the base 210 and / or the lens module 400 in the optical axis direction. The opening 2318 of the base member 2311 may penetrate the base member 2311 in the optical axis direction and may be expressed as a window, a hole, a hollow, or a through-hole. The opening 2318 may penetrate the center of the base member 2311 and may be disposed to correspond to or face an active area of ​​the image sensor 810. The opening 2318 of the base member 2311 may correspond to or face the opening of the mounting member 2314, the opening of the base 210, or the opening of the housing 140. The size or area of ​​the opening 2318 of the base member 2311 may be smaller than the size or area of ​​the opening of the base 210 or the opening of the housing 140.

[0179] The base member 2311 may include a first recess 2312 recessed from an outer edge. The base member 2311 may include a first recess 2312 recessed from an outer surface. The base member 2311 may include a first recess 2312 penetrating from the upper surface to the lower surface. The first recess 2312 may be a region for disposing a damper member 2319 penetrating the mounting member 2314. The damper member 2319 may be disposed within the first recess 2312 and spaced apart from the inner wall of the first recess 2312. The first recess 2312 may be formed to correspond to the shape of the damper member 2319. For example, if the upper surface of the damper member 2319 is formed in a circular shape, the inner surface of the first recess 2312 may be formed as a curved surface having a curvature. The first recess 2312 may be formed in a hole shape.

[0180] The top surface of the base member 2311 may include a first surface having a relatively short length in the longitudinal direction, a second surface opposite the first surface, a third surface having a relatively long length in the longitudinal direction, and a fourth surface opposite the third surface. The first and second surfaces of the base member 2311 may have a first recess 2312 formed in a central portion. The third and fourth surfaces of the base member 2311 may have the first recess 2312 formed symmetrically with respect to an imaginary line that bisects the base member 2311 in the longitudinal direction. If the first to fourth surfaces of the base member 2311 are formed to have the same length, the first recess 2312 may be formed in a central portion of each surface. This is merely an example, and the first recess 2312 of the base member 2311 may be formed in a region that overlaps with the lower surface of the lens barrel 414 in the optical axis direction.

[0181] The base member 2311 may include a second recess 2313 recessed from the inner edge. The base member 2311 may include a second recess 2313 recessed from the inner side surface of the opening. The base member 2311 may include a second recess 2313 recessed from the inner side surface of the opening toward the outer side surface. The second recess 2313 may prevent overflow of an adhesive such as UV epoxy used to attach the filter 610 to the mounting member 2314.

[0182] The top surface of the base member 2311 may include a recessed groove. The base member 2311 may have a plurality of grooves. The grooves of the base member 2311 may be regions where pins attached to an injection mold are coupled to eject a product during injection molding. The grooves of the base member 2311 may be formed at positions where ejector pins are attached. The grooves of the base member 2311 may be foreign matter collecting portions. The foreign matter collecting portions may be called dust traps. The foreign matter collecting portions can collect foreign matter flowing in from the lens driving device.

[0183] The mounting member 2314 may include an opening corresponding to the image sensor 810. The size of the opening of the mounting member 2314 may be smaller than the size of the opening 2318 of the base member 2311. The size of the opening of the mounting member 2314 may be smaller than the size of the filter 610. The opening of the mounting member 2314 may be formed to correspond to the opening of the base member 2311. The opening of the mounting member 2314 may be located below the opening 201 of the base 210 and may face the opening 201 of the base 210 and / or the lens module 400 in the optical axis direction. The opening of the mounting member 2314 may penetrate the mounting member 2314 in the optical axis direction and may be expressed as a window, hole, hollow, or through-hole. The opening may penetrate the center of the mounting member 2314 and be disposed to correspond to or face an active area of ​​the image sensor 810. The opening in the mounting member 2314 may correspond to or face the opening 2318 in the base member 2311, the opening in the base 210, or the opening in the housing 140. The size or area of ​​the opening 2318 in the mounting member 2314 may be smaller than the size or area of ​​the opening in the base 210 or the opening in the housing 140.

[0184] The mounting member 2314 may include a protrusion 2315 protruding from an outer edge. The base member 2311 may include a protrusion 2315 protruding from an outer surface. The protrusion 2315 may be formed at a position corresponding to the first recess 2312 of the base member 2311. The protrusion 2315 may include a hole 2316 penetrating from the upper surface to the lower surface. The hole 2316 may be a region into which the damper member 2319 is inserted and positioned. The hole 2316 may be formed to correspond to the shape of the damper member 2319. For example, if the damper member 2319 is formed in a cylindrical shape, the hole 2316 may be formed in a circular shape.

[0185] The top surface of the mounting member 2314 may include a first surface having a relatively short length in the longitudinal direction, a second surface opposite the first surface, a third surface having a relatively long length in the longitudinal direction, and a fourth surface opposite the third surface. The first and second surfaces of the mounting member 2314 may have a protrusion 2315 and a hole 2316 formed in their central portions. The third and fourth surfaces of the mounting member 2314 may have the protrusions 2315 and holes 2316 formed symmetrically with respect to an imaginary line that bisects the mounting member 2314 in the longitudinal direction. If the first to fourth surfaces of the mounting member 2314 are formed to have the same length, the protrusions 2315 and holes 2316 may be formed in their central portions. This is merely an example, and the protrusions 2315 and holes 2316 of the mounting member 2314 may be formed in an area that overlaps with the lower surface of the lens barrel 414 in the optical axis direction.

[0186] The mounting member 2314 may include a recess 2317 recessed from its outer edge. The recess 2317 of the mounting member 2314 may be a region for avoiding a groove formed on the upper surface of the base member 2311. Since the groove of the base member 2311 is formed when a pin attached to a mold is fitted into the groove during injection molding, the recess 2317 of the mounting member 2314 may be a region formed for minimizing stress generated when the injection-molded material of the base member 2311 expands.

[0187] The damper member 2319 may be formed in a cylindrical shape. The damper member 2319 may be formed in a hexahedron shape. The damper member 2319 may be formed of a silicone material. The damper member 2319 may be formed of an elastic material. The damper member 2319 is a buffer member and may be formed of a material that absorbs shock. The damper member 2319 may be disposed in the hole 2316 of the mounting member 2314. The damper member 2319 may be coupled to the hole 2316 of the mounting member 2314. The damper member 2319 may be disposed in the hole 2316 of the mounting member 2314 and the first recess 2312 of the base member 2311, and may be exposed from the top surface of the holder 2310. The damper member 2319 may be disposed in the first recess 2312. The damper member 2319 may be disposed within the first recess 2312 and spaced apart from the inner wall of the first recess 2312 .

[0188] The damper member 2319 can absorb the impact caused by movement of the lens barrel 414 in the optical axis direction, thereby preventing damage to the filter 610, and can also prevent damage to the lens 412 and a decrease in resolution.

[0189] The damper members 2319 may include first and second damper members 2319-3 and 2319-6 disposed at the center portions of the first and second surfaces of the holder 2310, and may include third and fourth damper members 2319-1 and 2319-2 and fifth and sixth damper members 2319-4 and 2319-5 disposed on both sides of the third and fourth surfaces of the base member 2311 so as to be symmetrical about the center portion. The damper members 2319 may be disposed at the center portions of the first and second surfaces of the base member 2311, and may be disposed on both sides of the third and fourth surfaces of the base member 2311 so as to be symmetrical about the center portion.

[0190] The damper members 2319 may be arranged in the center portions of the first to fourth surfaces of the base member 2311. The damper members 2319 may be arranged in the center portions of the first and second surfaces of the mounting member 2314, and may be arranged on both sides of the third and fourth surfaces so as to be symmetrical with respect to the center portion. The damper members 2319 may be arranged in the center portions of the first to fourth surfaces of the mounting member 2314. The damper members 2319 may be arranged so as to come into contact with the lower surface of the lens barrel 414 as the lens barrel 414 moves in the optical axis direction. The damper members 2319 may be arranged so as to overlap with the lens barrel 414 in the optical axis direction. The damper members 2319 may be arranged so as to overlap with the lower surface of the lens barrel 414 in the optical axis direction. The damper members 2319 may be arranged so as to face the lower surface of the lens barrel 414. The distance from the optical axis of lens barrel 414 to damper member 2319 may be smaller than the distance from the optical axis to the inner surface of opening 211 of base 210 .

[0191] The height of the damper member 2319 may be greater than the height of the base member 2311. The upper surface of the damper member 2319 may be located higher than the upper surface of the base member 2311. The damper member 2319 may have a shape that protrudes from the upper surface of the base member 2311. For example, in the cross section of the holder 2310, the upper surface of the damper member 2319 may be located higher than the upper surface of the base member 2311. As a result, even if the lens barrel 414 collides with the damper member 2319, the holder 2310 and the filter 810 coupled thereto will not be damaged.

[0192] The height of the damper member 2319 may be greater than the height of the base member 2311 corresponding to the first recess 2312. Thus, even when the damper member 2319 is positioned in the first recess 2312, an upper portion of the damper member 2319 may be exposed from the base member 2311. Furthermore, the damper member 2319 may be disposed apart from the sidewall of the first recess 2312 and coupled to the mounting member 2314. As the mounting member 2314, which has greater rigidity, is coupled to the damper member 2319, even if the lens barrel 414 collides with the damper member 2319, the base member 2311 and the filter 810 coupled thereto will not be damaged.

[0193] A first groove 2420 may be formed on the upper surface of the damper member 2319. The first groove 2420 may be recessed into the upper surface of the damper member 2319. The first groove 2420 may be formed in a cross shape on the upper surface of the damper member 2319. The first groove 2420 may facilitate attachment and detachment when it comes into contact with the lower surface of the lens barrel 414. The first groove 2420 may serve to partition the upper surface of the damper member 2319 so that the damper member 2319 can be easily attached and detached while ensuring a contact area between the damper member 2319 and the lower surface of the lens barrel 414. The first groove 2420 may be formed in various shapes, such as a circle recessed in the center of the upper surface or a star shape.

[0194] A second groove 2421 may be formed on the outer surface of the damper member 2319. The second groove 2421 may be recessed into the outer surface of the damper member 2319. The second groove 2421 may be a region for being inserted into and positioned in the hole 2316 of the mounting member 2314. The damper member 2319 may be fixed by the second groove 2421 when inserted into the hole 2316 of the mounting member 2314.

[0195] Hereinafter, with reference to FIG. 11, the process of joining the base member 2311, the mounting member 2314, and the damper member 2319 that constitute the holder 2310 and the joined structure will be described.

[0196] First, the damper member 2319 may be inserted into the hole 2316 of the mounting member 2314. Then, with the damper member 2319 placed in the hole 2316 of the mounting member 2314, the mounting member 2314 may be inserted into an injection mold and the base member 2311 may be injected. The base member 2311 may be insert-injected with the mounting member 2314 and the damper member 2319 inserted into the injection mold. Each component of the holder 2310 may be formed by injection molding or may be formed by combining each other.

[0197] The base member 2311 may be injection molded to partially cover the mounting member 2314. The base member 2311 may be formed to cover the outer edge of the mounting member 2314 and expose the inner opening. The upper surfaces of the base member 2311 and the mounting member 2314 may be arranged with a step. The upper surface of the mounting member 2314 may be arranged lower than the upper surface of the base member 2311.

[0198] A filter 610 may be disposed on the upper surface of the mounting member 2314. The filter 610 may be disposed so as to cover the opening of the mounting member 2314. When the filter 610 is disposed on the upper surface of the mounting member 2314, the outer surface of the filter 610 may be disposed so as to face the inner surface of the base member 2311. The length of the step between the base member 2311 and the mounting member 2314 in the optical axis direction may be formed to correspond to the thickness of the filter 610. The length of the step between the base member 2311 and the mounting member 2314 in the optical axis direction may be greater than or equal to the thickness of the filter 610.

[0199] The inner surface of the base member 2311 may be connected to the upper surface of the mounting member 2314. The angle formed between the inner surface of the base member 2311 and the upper surface of the mounting member 2314 may be perpendicular. The angle formed between the inner surface of the base member 2311 and the upper surface of the mounting member 2314 may be an acute angle or an obtuse angle.

[0200] The first recess 2312 of the base member 2311 may be spaced apart from the damper member 2319. The damper member 2319 may be disposed spaced apart from an inner surface of the first recess 2312 of the base member 2311. A space may be formed between the damper member 2319 and the first recess 2312 of the base member 2311. A surplus space may be formed between the damper member 2319 and the first recess 2312 to allow the damper member 2319 to expand in order to absorb and cushion the impact when the damper member 2319 collides with the lower surface of the lens barrel 414.

[0201] FIG. 13 is a perspective view of a portable terminal 200A according to an embodiment, and FIG. 14 is a configuration diagram of the portable terminal 200A shown in FIG.

[0202] Referring to Figures 13 and 14, a portable terminal (hereinafter referred to as "terminal") 200A may include a body 850, a wireless communication unit 710, an A / V input unit 720, a sensing unit 740, an input / output unit 750, a memory unit 760, an interface unit 770, a control unit 780, and a power supply unit 790.

[0203] The body 850 shown in FIG. 13 is in the form of a bar, but is not limited to this and may have various structures such as a slide type, holder type, swing type, swirl type, etc., in which two or more sub-bodies are connected so as to be able to move relative to each other.

[0204] The body 850 may include a case (such as a casing, housing, or cover) that defines the exterior. For example, the body 850 may be divided into a front case 851 and a rear case 852. Various electronic components of the terminal may be housed in a space formed between the front case 851 and the rear case 852.

[0205] The wireless communication unit 710 may include one or more modules that enable wireless communication between the terminal 200A and a wireless communication system, or between the terminal 200A and a network in which the terminal 200A is located. For example, the wireless communication unit 710 may include a broadcast receiving module 711, a mobile communication module 712, a wireless Internet module 713, a short-range communication module 714, and a location information module 715.

[0206] The A / V (Audio / Video) input unit 720 is for inputting an audio signal or a video signal, and may include a camera 721, a microphone 722, and the like.

[0207] The camera 721 may include a camera module 200 according to an embodiment.

[0208] The sensing unit 740 can sense the current state of the terminal 200A, such as the open / closed state of the terminal 200A, the position of the terminal 200A, whether or not the user is touching the terminal 200A, the orientation of the terminal 200A, and the acceleration / deceleration of the terminal 200A, and generate a sensing signal to control the operation of the terminal 200A. For example, if the terminal 200A is a slide phone, the sensing unit 740 can sense whether or not the slide phone is open / closed. The sensing unit 740 is also responsible for sensing whether or not the power supply unit 790 is supplying power, whether or not the interface unit 770 is connected to an external device, etc.

[0209] The input / output unit 750 generates input or output related to vision, hearing, touch, etc. The input / output unit 750 can generate input data for operational control of the terminal 200A and can display information processed by the terminal 200A.

[0210] The input / output unit 750 may include a keypad unit 730, a display module 751, an audio output module 752, and a touch screen panel 753. The keypad unit 730 can generate input data through keypad input.

[0211] The display module 751 may include a plurality of pixels that change color in response to an electrical signal. For example, the display module 751 may include at least one of a liquid crystal display, a thin film transistor-liquid crystal display, an organic light-emitting diode, a flexible display, and a 3D display.

[0212] The audio output module 752 can output audio data received from the wireless communication unit 710 in a call signal reception, conversation mode, recording mode, voice recognition mode, or broadcast reception mode, or can output audio data stored in the memory unit 760.

[0213] The touch screen panel 753 can convert a change in capacitance caused by a user's touch on a specific area of ​​the touch screen into an electrical input signal.

[0214] The memory unit 760 may store a program for processing and controlling the control unit 780 and may temporarily store input / output data (e.g., a phone book, messages, audio, still images, photos, videos, etc.) For example, the memory unit 760 may store images, such as photos or videos, captured by the camera 721.

[0215] The interface unit 770 serves as a path for connection with an external device connected to the terminal 200A. The interface unit 770 receives data from an external device, receives power and transmits it to each component in the terminal 200A, or transmits data in the terminal 200A to an external device. For example, the interface unit 770 may include a wired / wireless headset port, an external charger port, a wired / wireless data port, a memory card port, a port for connecting a device with an identification module, an audio I / O (Input / Output) port, a video I / O (Input / Output) port, an earphone port, etc.

[0216] The controller 780 may control the overall operation of the terminal 200 A. For example, the controller 780 may perform related control and processing for voice communication, data communication, video communication, and the like.

[0217] The control unit 780 may include a multimedia module 781 for playing multimedia. The multimedia module 781 may be implemented within the control unit 780 or may be implemented separately from the control unit 780.

[0218] The control unit 780 can perform pattern recognition processing to recognize handwritten or drawn inputs made on the touch screen as characters and images, respectively.

[0219] The power supply unit 790 receives an external power source or an internal power source under the control of the control unit 780, and can supply power necessary for the operation of each component.

[0220] Those skilled in the art will understand that the present invention can be embodied in various modified forms without departing from the essential characteristics described above. Therefore, the disclosed method should be considered in an illustrative rather than a restrictive sense. The scope of the present invention is defined by the claims, not the above description, and any differences within the scope of the claims should be construed as being within the scope of the present invention.

Claims

1. A substrate; a base disposed on the substrate and including an opening; a lens barrel disposed over the opening in the base and the substrate; a holder disposed on the substrate and disposed within the opening of the base; a filter coupled to the holder; The holder includes a damper member arranged in a position overlapping the lowermost surface of the lens barrel in the optical axis direction.

2. the holder includes a mounting member to which the filter is attached, and a base member disposed outside the mounting member; The mounting member includes a protrusion protruding from an outer surface thereof and a hole formed in the protrusion, The camera module according to claim 1 , wherein the damper member is disposed in the hole of the mounting member.

3. the base member includes a first recessed portion recessed in an outer surface thereof, The camera module according to claim 2 , wherein the damper member is disposed within the first recess and spaced apart from an inner wall of the first recess.

4. The camera module according to claim 2 , wherein an upper surface of the damper member is positioned higher than an upper surface of the base member.

5. The camera module according to claim 2 , wherein the height of the damper member is greater than the height of the base member.

6. a cover member formed on the base and accommodating the lens barrel, the holder, and the filter; The camera module according to claim 1 , wherein the cover member is directly coupled to the base and not directly coupled to the holder.

7. The camera module according to claim 1 , wherein an outer surface of the holder and an inner surface of the opening of the base are spaced apart from each other.

8. The camera module according to claim 1 , wherein a distance from the optical axis of the lens barrel to the damper member is smaller than a distance from the optical axis to an inner surface of the opening in the base.

9. a housing disposed on the base; a bobbin disposed within the housing; The camera module according to claim 1 , wherein the bobbin includes a stopper on a lower surface thereof that faces a portion of the base.

10. The camera module according to claim 9 , wherein a distance from the optical axis of the lens barrel to the stopper is greater than a distance from the optical axis to the damper member in a direction perpendicular to the optical axis.

Images