KR20230079339A - Lens driving unit, camera module and optical apparatus - Google Patents

Abstract

This embodiment, the base; a substrate portion including a body portion positioned on an upper surface of the base and a terminal portion extending downward from the body portion; a terminal portion accommodating portion formed on a side of the base and accommodating at least a portion of the terminal portion; and an adhesive accommodating groove formed in the terminal accommodating portion and accommodating at least a portion of an adhesive bonding the terminal portion to the terminal accommodating portion.
Through the present invention, the adhesion of the adhesive to the base is improved, and through this, separation between the substrate and the base can be prevented.

Description

Lens driving unit, camera module and optical apparatus {Lens driving unit, camera module and optical apparatus}

This embodiment relates to a lens driving unit, a camera module, and an optical device.

The contents described below provide background information on the present embodiment, but do not describe the prior art.

As the distribution of various portable terminals is widely generalized and wireless Internet services are commercialized, consumers' demands related to portable terminals are also diversifying, and various types of additional devices are being installed in portable terminals.

Among them, a typical example is a camera module that takes a picture or video of a subject. Meanwhile, a recent camera module includes a lens driving unit for an auto focus function or an image stabilization function. Inside the aforementioned lens driving unit, an FPCB for supplying power to a driving unit inside the lens driving unit is provided. However, in the conventional lens driving unit, there is a problem in that the FPCB is separated according to environments such as high temperature and high humidity.

In order to solve the above-mentioned problem, it is intended to provide a lens driving unit having improved adhesion between a substrate and a base.

Furthermore, it is intended to provide a camera module and an optical device including the lens driving unit.

The lens driving unit according to the present embodiment includes a base; a substrate portion including a body portion positioned on an upper surface of the base and a terminal portion extending downward from the body portion; a terminal portion accommodating portion formed on a side of the base and accommodating at least a portion of the terminal portion; and an adhesive accommodating groove formed in the terminal accommodating portion and accommodating at least a portion of an adhesive bonding the terminal portion to the terminal accommodating portion.

The terminal accommodating portion may include a terminal accommodating groove in which the terminal unit is seated, and a terminal accommodating portion positioned on both sides of the terminal accommodating groove and protruding outward to support both side surfaces of the terminal unit.

The adhesive accommodating groove may be formed concave inward on a side surface of the base forming the terminal accommodating groove.

The adhesive accommodating groove may include a plurality of first accommodating grooves extending in a vertical direction.

The first accommodating groove has a lower open type, and at least a part of it may have a wider width toward the lower side.

The first accommodating groove may be positioned between a plurality of first protrusions formed to protrude outward from the first accommodating groove, and both sides of the first protrusion may be formed to be rounded.

The terminal support portion includes a first support portion supporting one side surface of the terminal portion and a second support portion supporting the other side surface of the terminal portion, and the adhesive receiving groove is horizontal from the first support portion to the second support portion. It may include a second receiving groove formed extending in the direction.

The second accommodating groove may be positioned at a lower portion of a side surface of the base forming the terminal portion accommodating groove and may be of a lower open type or may be positioned at an upper portion of a side surface of the base and may be of an open top type.

The second accommodating groove is located on the upper side of the side surface of the base and is formed by a second protrusion protruding outward than the second accommodating groove, and the second protrusion and the second accommodating groove correspond in a vertical direction. can have any length.

The lens driving unit may include a bobbin positioned above the base; a housing positioned outside the bobbin and movably supporting the bobbin; a first driving unit located on the bobbin; and a second driving unit located in the housing and facing the first driving unit.

The lens driving unit may include a housing movably supported with respect to the base; a second driving unit located in the housing; and a third driving unit positioned on the substrate and facing the second driving unit.

The substrate portion may be formed of a flexible printed circuit board (FPCB), and the terminal portion may be integrally provided with the body portion and formed by bending.

The terminal unit includes a terminal surface, a plurality of terminals formed on a surface of the terminal surface, and a cover layer formed on the terminal surface and a surface of the terminal to cover the terminal surface and a portion of the terminal, wherein the terminal The length of the boundary line formed between the terminal and the cover layer formed on the surface of the terminal may be longer than the length of the terminal in the width direction.

The camera module according to the present embodiment includes a base; a substrate portion including a body portion positioned on an upper surface of the base and a terminal portion extending downward from the body portion; a terminal portion accommodating portion formed on a side of the base and accommodating at least a portion of the terminal portion; and an adhesive accommodating groove formed in the terminal accommodating portion and accommodating at least a portion of an adhesive bonding the terminal portion to the terminal accommodating portion.

The optical device according to the present embodiment includes a main body, a display unit disposed on one surface of the main body to display information, and a camera module installed in the main body to take an image or a photo. The camera module includes a base ; a substrate portion including a body portion positioned on an upper surface of the base and a terminal portion extending downward from the body portion; a terminal portion accommodating portion formed on a side of the base and accommodating at least a portion of the terminal portion; and an adhesive accommodating groove formed in the terminal accommodating portion and accommodating at least a portion of an adhesive bonding the terminal portion to the terminal accommodating portion.

Through the present invention, the adhesive strength of the adhesive to the base is improved, and through this, the adhesive strength between the substrate portion and the base can be improved.

Accordingly, a phenomenon in which the substrate unit is separated from the base can be prevented during an adhesive curing operation between the substrate unit and the base or in a high temperature and high humidity environment.

1 is a perspective view of a lens driving unit according to this embodiment.
2 is an exploded perspective view of the lens driving unit according to the present embodiment.
3 is a perspective view of the base of the lens driving unit according to the present embodiment.
4 is a perspective view of a base of a lens driving unit according to a modified example.
5 is a plan view of the substrate portion of the lens driving unit according to the present embodiment.
FIG. 6 is a partially enlarged view of part A of FIG. 5 .

Hereinafter, some embodiments of the present invention will be described through exemplary drawings. In describing the reference numerals for the components of each drawing, the same numerals indicate the same components as much as possible, even if they are displayed on different drawings. In addition, in describing an embodiment of the present invention, if it is determined that a detailed description of a related known configuration or function hinders understanding of the embodiment of the present invention, the detailed description will be omitted.

Also, terms such as first, second, A, B, (a), and (b) may be used to describe components of an embodiment of the present invention. These terms are only used to distinguish the component from other components, and the nature, order, or order of the corresponding component is not limited by the term. When an element is described as being “connected,” “coupled to,” or “connected” to another element, the element may be directly connected, coupled, or connected to the other element, but not between the element and the other element. It should be understood that another component may be “connected”, “coupled” or “connected” between elements.

The "optical axis direction" used below is defined as the optical axis direction of the lens module coupled to the lens driving unit. On the other hand, the “optical axis direction” may be used interchangeably with a vertical direction, a z-axis direction, and the like.

The "auto focus function" used below refers to focusing on a subject by adjusting the distance to the image sensor by moving the lens module in the optical axis direction according to the distance of the subject so that a clear image of the subject can be obtained from the image sensor. defined as a function. Meanwhile, “auto focus” may be used interchangeably with “auto focus (AF)”.

The “hand shake correction function” used below is defined as a function of moving or tilting a lens module in a direction perpendicular to an optical axis direction to offset vibration (movement) generated in an image sensor by an external force. Meanwhile, “hand shake correction” may be used interchangeably with “optical image stabilization (OIS)”.

Hereinafter, the configuration of the optical device according to the present embodiment will be described.

The optical device according to the present embodiment includes a mobile phone, a mobile phone, a smart phone, a portable smart device, a digital camera, a laptop computer, a digital broadcasting terminal, a personal digital assistant (PDA), and a portable multimedia player (PMP). ), navigation, etc., but is not limited thereto, and any device for capturing images or photos is possible.

The optical device according to the present embodiment includes a main body (not shown), a display unit (not shown) disposed on one surface of the main body to display information, and a camera module (not shown) installed in the main body to take images or photos. It may include a camera (not shown) having a time).

Hereinafter, the configuration of the camera module according to the present embodiment will be described.

The camera module may further include a lens driving unit 10, a lens module (not shown), an infrared cut filter (not shown), a printed circuit board (not shown), an image sensor (not shown), and a controller (not shown). can

The lens module may include one or more lenses (not shown) and a lens barrel accommodating the one or more lenses. However, one configuration of the lens module is not limited to the lens barrel, and any holder structure capable of supporting one or more lenses may be used. The lens module may be coupled to the lens driving unit 10 and move together with the lens driving unit 10 . The lens module may be coupled to the inside of the lens driving unit 10 as an example. The lens module may be screwed to the lens driving unit 10 as an example. The lens module, for example, may be coupled to the lens driving unit 10 by an adhesive (not shown). Meanwhile, light passing through the lens module may be irradiated to the image sensor.

The infrared cut filter may block light in the infrared region from being incident on the image sensor. An infrared cut filter may be positioned between the lens module and the image sensor as an example. The infrared cut filter may be located on a holder member (not shown) provided separately from the base 500 . However, the infrared filter may be mounted in the through hole 510 formed in the center of the base 500. The infrared filter may be formed of, for example, a film material or a glass material. Meanwhile, the infrared filter, for example, may be formed by coating an infrared blocking coating material on a flat optical filter such as a cover glass for protecting an imaging surface or a cover glass.

The printed circuit board may support the lens driving unit 10 . An image sensor may be mounted on the printed circuit board. As an example, an image sensor may be located inside the upper surface of the printed circuit board, and a sensor holder (not shown) may be located outside the upper surface of the printed circuit board. A lens driving unit 10 may be positioned above the sensor holder. Alternatively, the lens driving unit 10 may be positioned outside the top surface of the printed circuit board, and the image sensor may be positioned inside the top surface of the printed circuit board. Through this structure, light passing through the lens module accommodated inside the lens driving unit 10 may be irradiated to the image sensor mounted on the printed circuit board. The printed circuit board may supply power to the lens driving unit 10 . Meanwhile, a control unit for controlling the lens driving unit 10 may be located on the printed circuit board.

The image sensor may be mounted on a printed circuit board. The image sensor may be positioned such that an optical axis coincides with the lens module. Through this, the image sensor may obtain light passing through the lens module. The image sensor may output irradiated light as an image. The image sensor may be, for example, a charge coupled device (CCD), a metal oxide semi-conductor (MOS), a CPD, and a CID. However, the type of image sensor is not limited thereto.

The control unit may be mounted on a printed circuit board. The control unit may be located outside the lens driving unit 10 . However, the control unit may be located inside the lens driving unit 10 . The control unit may control the direction, intensity, and amplitude of the current supplied to each component constituting the lens driving unit 10 . The controller may control the lens driving unit 10 to perform at least one of an auto focus function and a hand shake correction function of the camera module. That is, the controller may control the lens driving unit 10 to move the lens module in the direction of the optical axis, or to move or tilt the lens module in a direction perpendicular to the direction of the optical axis. Furthermore, the controller may perform feedback control of the auto focus function and hand shake correction function. In more detail, the control unit receives the position of the bobbin 210 or the housing 310 detected by the sensor unit 700 and controls power or current applied to the first driving unit 220 to the third driving unit 420. can

Hereinafter, the configuration of the lens driving unit 10 according to this embodiment will be described with reference to the drawings.

1 is a perspective view of a lens driving unit according to this embodiment, FIG. 2 is an exploded perspective view of the lens driving unit according to this embodiment, FIG. 3 is a perspective view of a base of the lens driving unit according to this embodiment, and FIG. is a perspective view of a base of a lens driving unit according to a modified example, FIG. 5 is a plan view of a substrate of the lens driving unit according to the present embodiment, and FIG. 6 is a partially enlarged view of portion A of FIG. 5 .

1 to 6, the lens driving unit 10 according to this embodiment includes a cover member 100, a first mover 200, a second mover 300, a stator 400, a base 500, a support member 600, a sensor unit 700, and an adhesive receiving groove 800 may be included. However, in the lens driving unit 10 according to the present embodiment, the cover member 100, the first mover 200, the second mover 300, the stator 400, the base 500, and the support member 600 ), any one or more of the sensor unit 700 and the adhesive receiving groove 800 may be omitted. In particular, the sensor unit 700 is a configuration for an auto focus feedback function and/or a hand shake correction feedback function and can be omitted.

The cover member 100 may form the exterior of the lens driving unit 10 . The cover member 100 may have a hexahedral shape with an open bottom. However, it is not limited thereto. The cover member 100 may include a top plate 101 and a side plate 102 extending downward from an outside of the top plate 101 . Meanwhile, the lower end of the side plate 102 of the cover member 100 may be mounted on the base 500 . The first mover 200, the second mover 300, the stator 400, and the support member 600 may be positioned in the inner space formed by the cover member 100 and the base 500. In addition, the inner surface of the cover member 100 may be mounted on the base 500 in close contact with part or all of the side surface of the base 500 . Through such a structure, the cover member 100 may have a function of preventing penetration of external contaminants while protecting internal components from external impact.

The cover member 100 may be formed of a metal material as an example. More specifically, the cover member 100 may be provided with a metal plate material. In this case, the cover member 100 can block radio wave interference. That is, the cover member 100 may block radio waves generated outside the lens driving unit 10 from being introduced into the cover member 100 . In addition, the cover member 100 may block radio waves generated inside the cover member 100 from being emitted to the outside of the cover member 100 . However, the material of the cover member 100 is not limited thereto.

The cover member 100 may include an opening 110 formed on the top plate 101 to expose the lens module. The opening 110 may have a shape corresponding to that of the lens module. The size of the opening 110 may be larger than the diameter of the lens module so that the lens module can be assembled through the opening 110 . Also, light introduced through the opening 110 may pass through the lens module. Meanwhile, light passing through the lens module may be transmitted to the image sensor.

The first mover 200 may be combined with a lens module, which is a component of the camera module (however, the lens module may also be described as a component of the lens driving unit 10). The lens module may be located inside the first mover 200 . An outer circumferential surface of the lens module may be coupled to an inner circumferential surface of the first mover 200 . Meanwhile, the first mover 200 may move integrally with the lens module through interaction with the second mover 300 . That is, the first mover 200 may move the lens module.

The first mover 200 may include a bobbin 210 and a first driving unit 220 . The first mover 200 may include a bobbin 210 coupled to the lens module. The first mover 200 may include a first drive unit 220 located on the bobbin 210 and moved by electromagnetic interaction with the second drive unit 320 .

The bobbin 210 may be coupled to the lens module. More specifically, the outer circumferential surface of the lens module may be coupled to the inner circumferential surface of the bobbin 210 . Meanwhile, the first driving unit 220 may be coupled to the bobbin 210 . In addition, the lower part of the bobbin 210 may be coupled to the lower support member 620 and the upper part of the bobbin 210 may be coupled to the upper support member 610 . The bobbin 210 may be located inside the housing 310 . The bobbin 210 may relatively flow in the optical axis direction with respect to the housing 310 .

The bobbin 210 may include a lens coupling part 211 formed on the inside. A lens module may be coupled to the lens coupler 211 . A screw thread having a shape corresponding to a screw thread formed on an outer circumferential surface of the lens module may be formed on an inner circumferential surface of the lens coupler 211 . That is, the outer circumferential surface of the lens module may be screwed to the inner circumferential surface of the lens coupler 211 . Meanwhile, an adhesive may be injected between the lens module and the bobbin 210 . In this case, the adhesive may be an epoxy cured by ultraviolet (UV) light. That is, the lens module and the bobbin 210 may be bonded by UV curing epoxy. In addition, the lens module and the bobbin 210 may be bonded by heat-hardened epoxy.

The bobbin 210 may include a first driving unit coupling part 212 on which the first driving unit 220 is wound or mounted. The first driving unit coupling part 212 may be integrally formed with the outer surface of the bobbin 210 . In addition, the first drive unit coupling portion 212 may be formed continuously along the outer surface of the bobbin 210 or may be formed spaced apart at predetermined intervals. The first driving part coupling part 212 may include a recessed part formed by a part of the outer surface of the bobbin 210 being recessed. The first driving unit 220 may be located in the depression, and in this case, the first driving unit 220 may be supported by the first driving unit coupling part 212 .

As an example, the first driving unit coupling part 212 may be formed by protruding parts located on the upper and lower sides of the recessed part, and in this case, the coil of the first driving unit 300 is directly wound around the first driving unit coupling unit 212. can Alternatively, as another example, the first driving unit coupling part 212 may be formed with an upper or lower side of the recessed part open and a hooking part provided on the other side. At this time, the coil of the first driving unit 300 is pre-wound. It can be inserted and coupled through the open part in the state.

The bobbin 210 may include an upper coupling portion 213 coupled to the upper support member 610 . The upper coupling portion 213 may be coupled to the inner portion 612 of the upper support member 610 . As an example, a protrusion (not shown) of the upper coupling part 213 may be inserted into a groove or hole (not shown) of the inner part 612 and coupled thereto. On the other hand, the upper support member 610 is provided with a protrusion and the bobbin 210 is provided with a groove or a hole so that both may be coupled. Meanwhile, the bobbin 210 may include a lower coupling portion (not shown) coupled to the lower support member 620 . The lower coupling portion formed on the lower portion of the bobbin 210 may be coupled to the inner portion 622 of the lower support member 620 . As an example, a protrusion (not shown) of the lower coupling portion may be inserted into a groove or hole (not shown) of the inner portion 622 and coupled thereto. On the other hand, the lower support member 620 is provided with a protrusion and the bobbin 210 is provided with a groove or a hole so that both may be coupled.

The first driving unit 220 may be positioned to face the second driving unit 320 of the second mover 300 . The first driving unit 220 may move the bobbin 210 relative to the housing 310 through electromagnetic interaction with the second driving unit 320 . The first driving unit 220 may include a coil. The coil may be guided to the first driving part coupling part 212 and wound on the outer surface of the bobbin 210 . Also, as another embodiment, the coils may be disposed on the outer surface of the bobbin 210 such that four coils are independently provided so that two adjacent coils form a 90° angle to each other. When the first driving unit 220 includes a coil, power supplied to the coil may be supplied through the lower support member 620 . At this time, the lower support member 620 may be provided separately as a pair to supply power to the coil. Meanwhile, the first driving unit 220 may include a pair of lead wires (not shown) for power supply. In this case, each of the pair of lead wires of the first driving unit 220 may be electrically coupled to each of the pair of lower support members 620 . Alternatively, the first driving unit 220 may receive power from the upper support member 610 . Meanwhile, when power is supplied to the coil, an electromagnetic field may be formed around the coil. In another embodiment, the first driving unit 220 may include a magnet and the second driving unit 320 may include a coil.

The second mover 300 may be located outside the first mover 200 facing the first mover 200 . The second mover 300 may be supported by the base 500 located on the lower side. The second mover 300 may be supported by a fixing member. At this time, the fixing member may include a base 500 and a stator 400 . That is, the second mover 300 may be supported by the base 500 and/or the base unit 410 . The second mover 300 may be located in the inner space of the cover member 100 .

The second mover 300 may include a housing 310 and a second driving unit 320 . The second mover 300 may include a housing 310 positioned outside the bobbin 210 . In addition, the second mover 300 may include a second drive unit 320 positioned opposite to the first drive unit 220 and fixed to the housing 310 .

At least a portion of the housing 310 may be formed in a shape corresponding to the inner surface of the cover member 100 . In particular, the outer surface of the housing 310 may be formed in a shape corresponding to the inner surface of the side plate 102 of the cover member 100 . The outer surface of the housing 310 and the inner surface of the side plate 102 of the cover member 100 may be formed flat. More specifically, when the housing 310 is in its initial position, an outer surface of the housing 310 and an inner surface of the side plate 102 of the cover member 100 may be parallel. In this case, when the housing 310 is moved toward the cover member 100 as much as possible, the outer surface of the housing 310 and the inner surface of the side plate 102 of the cover member 100 are in contact with the housing 310 and/or the cover. An impact generated in the member 100 may be dispersed. The housing 310 may have, for example, a hexahedral shape including four side surfaces. However, the shape of the housing 310 may be provided in any shape that can be disposed inside the cover member 100 .

The housing 310 is formed of an insulating material and may be formed as an injection molding product in consideration of productivity. The housing 310 is a moving part for driving the OIS and may be spaced apart from the cover member 100 by a predetermined distance. However, in the AF model, the housing 310 may be fixed on the base 500. Alternatively, in the AF model, the housing 310 may be omitted and the magnet provided as the second driving unit 320 may be fixed to the cover member 100 .

The upper and lower sides of the housing 310 are open to accommodate the first mover 200 movably in the vertical direction. The housing 310 may include an upper and lower open inner space 311 inside. The bobbin 210 may be movably positioned in the inner space 311 . That is, the inner space 311 may be provided in a shape corresponding to the bobbin 210 . In addition, the inner circumferential surface of the housing 310 forming the inner space 311 may be spaced apart from the outer circumferential surface of the bobbin 210 .

The housing 310 may include a second driving unit coupling part 312 formed in a shape corresponding to the second driving unit 320 on a side surface and accommodating the second driving unit 320 . That is, the second driving unit coupling part 312 may accommodate and fix the second driving unit 320 . The second driving unit 320 may be fixed to the second driving unit coupling part 312 by an adhesive (not shown). Meanwhile, the second driving unit coupling part 312 may be located on an inner circumferential surface of the housing 310 . In this case, there is an advantage in electromagnetic interaction with the first driving unit 220 located inside the second driving unit 320 . In addition, the second driving unit coupling part 312, as an example, may have an open bottom. In this case, there is an advantage in electromagnetic interaction between the third driving unit 420 and the second driving unit 320 located below the second driving unit 320 . As an example, the lower end of the second driving unit 320 may be positioned to protrude lower than the lower end of the housing 310 . As an example, four second driving unit couplers 312 may be provided. The second driving unit 320 may be coupled to each of the four second driving unit coupling parts 312 .

An upper support member 610 may be coupled to an upper portion of the housing 310 and a lower support member 620 may be coupled to a lower portion of the housing 310 . The housing 310 may include an upper coupling portion 313 coupled to the upper support member 610 . The upper coupling portion 313 may be coupled to the outer portion 611 of the upper support member 610 . As an example, the protrusion of the upper coupling portion 313 may be inserted into a groove or hole (not shown) of the outer portion 611 and coupled thereto. On the other hand, as a modified example, the upper support member 610 is provided with a protrusion and the housing 310 is provided with a groove or a hole so that both may be coupled. Meanwhile, the housing 310 may include a lower coupling portion (not shown) coupled to the lower support member 620 . The lower coupling portion formed at the lower portion of the housing 310 may be coupled to the outer portion 621 of the lower support member 620 . As an example, the protrusion of the lower coupling portion may be inserted into a groove or hole (not shown) of the outer portion 621 and coupled thereto. On the other hand, as a modified example, the lower support member 620 is provided with a protrusion and the housing 310 is provided with a groove or a hole so that both may be coupled.

The housing 310 may include a first side surface, a second side surface adjacent to the first side surface, and a corner portion positioned between the first side surface and the second side surface. An upper stopper (not shown) may be positioned at a corner of the housing 310 . The upper stopper may overlap the cover member 100 in a vertical direction. When the housing 310 moves upward due to an external impact, the upper stopper may contact the cover member 100 to limit the upward movement of the housing 310 .

The second driving unit 320 may be positioned to face the first driving unit 220 of the first mover 200 . The second driving unit 320 may move the first driving unit 220 through electromagnetic interaction with the first driving unit 220 . The second driving unit 320 may include a magnet. The magnet may be fixed to the second driving unit coupling part 312 of the housing 310 . As an example, as shown in FIG. 2 , the second driving unit 320 may be disposed on the housing 310 such that four magnets are independently provided so that two neighboring magnets form an angle of 90° to each other. That is, the second driving unit 320 is mounted on the four side surfaces of the housing 310 at equal intervals to promote efficient use of the internal volume. In addition, the second driving unit 320 may be attached to the housing 310 by an adhesive, but is not limited thereto. Meanwhile, the first driving unit 220 may include a magnet and the second driving unit 320 may include a coil.

The stator 400 may be positioned to face the lower side of the second mover 300 . The stator 400 may movably support the second mover 300 . The stator 400 can move the second mover 300 . In addition, through-holes 411 and 421 corresponding to the lens module may be located at the center of the stator 400 .

The stator 400 may include, for example, a substrate unit 410 and a third driving unit 420 . The stator 400 may include a substrate portion 410 positioned between the third driving portion 420 and the base 500 . In addition, the stator 400 may include a third driving unit 420 positioned opposite to the lower side of the second driving unit 320 .

The substrate unit 410 may include a flexible printed circuit board (FPCB), which is a flexible circuit board. The substrate portion 410 may be formed of FPCB. The substrate unit 410 may be positioned between the third driving unit 420 and the base 500 . Meanwhile, the substrate unit 410 may supply power to the third driving unit 420 . In addition, the substrate unit 410 may supply power to the first driving unit 220 or the second driving unit 320 . As an example, the substrate unit 410 may supply power to the first driving unit 220 through the lateral support member 630, the upper support member 610, the energizing member 640, and the lower support member 620. . Alternatively, the substrate unit 410 may supply power to the first driving unit 220 through the side support member 630 and the upper support member 610 .

The substrate portion 410 may include a body portion 411 , a terminal portion 412 , and a through hole 413 .

The substrate portion 410 may include a body portion 411 positioned on an upper surface of the base 500 . The body portion 411 may be seated on the upper surface of the base 500 . That is, the lower surface of the body portion 411 and the upper surface of the base 500 may contact each other. The body portion 411 may be electrically connected to the third driving unit 420 to supply power to the third driving unit 420 . In addition, the body portion 411, the first driving unit 220 or the second driving unit through the side support member 630, the upper support member 610, the energizing member 640, and / or the lower support member 620 Power can be supplied to (320). The body portion 411 may receive power from the outside through the terminal portion 412 .

The substrate portion 410 may include a terminal portion 412 extending downward from the body portion 411 . The terminal portion 412 may extend downward from the body portion 411 . The terminal unit 412 receives power from the outside and supplies power to the first to third driving units 220, 320, and 420 and/or the first and second sensor units 710 and 720 through the body unit 411. can supply The terminal portion 412 may be integrally formed with the body portion 411 . The terminal portion 412 may be formed by bending from the integrally provided body portion 411 .

The terminal portion 412 includes a terminal surface 412a, a plurality of terminals 412b disposed and/or formed on the surface of the terminal surface 412a, and disposed on the surface of the terminal surface 412a and the terminal 412b. / or formed may include a cover layer 412c covering a portion of the terminal surface 412a and the terminal 412b. A boundary line L1 formed between the cover layer 412c formed on the surface of the terminal 412b and the terminal 412b may be longer than the width L2 of the terminal 412b. The terminal unit 412 may include an inner surface in contact with the base 500, an outer surface positioned opposite to the inner surface, and both side surfaces connecting the inner surface and the outer surface.

A plurality of terminals 412b may be arranged and/or formed on the surface of the terminal surface 412a. That is, a plurality of terminals 412b may be formed on the surface of the terminal surface 412a at predetermined intervals by a printing technique, a nickname technique, or the like. The substrate unit 410, as an example, may be formed by stacking a plurality of layers. Meanwhile, the terminal 412b may also be formed by being stacked on the substrate 410 . As an example, the terminal 412b may be stacked after the pattern is formed on the substrate 410, but is not limited thereto. The number of the plurality of terminals 412b may be appropriately selected according to an electrical connection structure with external components. In addition, when two or more terminal units 412 are provided, the number of terminals 412b formed on each terminal surface 412a does not necessarily need to match.

The cover layer 412c is formed on the surfaces of the terminal surface 412a and the terminal 412b to cover portions of the surfaces of the terminal surface 412a and the terminal 412b. The cover layer 412c is formed on the surface of the terminal surface 412a and the terminal 412b to electrically insulate the terminal surface 412a and the terminal 412b, prevent abrasion thereof, or reinforce strength thereof. can do. In this case, the cover layer 412c may be a photo solder resist (PSR) or a coverlay. For example, the cover layer 412c may be formed by coating the surfaces of the terminal surfaces 412a and 412b. However, it is not limited thereto.

The cover layer 412c can prevent lead from being attached to unnecessary parts in the soldering process, and various elements and circuit patterns formed on the printed circuit board 250 are directly exposed to air and oxidized or oxidized by oxygen and moisture. It can play a role in preventing deterioration.

The cover layer 412c may be formed to surround the terminal 412b and expose a portion of the surface of the terminal 412b. Since the terminal 412b is to be electrically coupled to a terminal such as a printed circuit board, it is appropriate to secure a soldering or the like area for electrical coupling. It may be formed only on the top of (412b).

In this case, the cover layer 412c may be formed of, for example, photo solder resist ink or a polyimide material. The photosensitive ink may be applied to the terminal surfaces 412a and 412b in liquid form and then cured to form the cover layer 412c. At this time, after the photosensitive ink is applied to the entire terminal 412b, an exposed portion of the terminal 412b may be formed by removing unnecessary portions of the photosensitive ink through exposure and development. In addition, the exposed portion of the terminal 412b may be formed by applying and curing only a necessary portion. In addition, a cover layer 412c may be formed to form an exposed portion of the terminal 412b by coating a film, tape, or the like into a required shape and coating the surface of the terminal surface 412a and the terminal 412b.

Alternatively, both photosensitive ink and polyimide may be used, and depending on the application method and product structure, photosensitive ink may be used first and then polyimide may be used, or polyimide may be used and then photosensitive ink may be applied.

On the other hand, polyimide is a flexible material and can also be used as a material for manufacturing a flexible printed circuit board (FPCB). Therefore, in the embodiment, the substrate portion 410 and the cover layer 412c may be formed of polyimide, which is the same material.

The terminal 412b may include a laminated portion 412ba covered by the cover layer 412c and an exposed portion 412bb not covered by the cover layer 412c. Referring to FIG. 6 , an upper portion of the terminal 412b, that is, a portion indicated by a hidden line is a laminated portion 412ba covered by a cover layer 412c. Meanwhile, the lower portion of the terminal 412b, that is, a portion indicated by a solid line is an exposed portion 412bb exposed without being covered by the cover layer 412c in order to be electrically connected to an external component. A boundary line L1 may be formed between the cover layer 412c and the terminal 412b. In this embodiment, the length of the boundary line L1 may be longer than the length of the width L2 of the terminal 412b. As can be seen, since the cover layer 412c is formed to cover a portion of the terminal 412b, peeling of the terminal from the substrate 410 can be prevented. A phenomenon in which the terminal 412b is separated from the substrate 410 may be prevented by the laminated portion 412ba of the terminal 412b.

If the boundary line between the cover layer 412c and the terminal 412b is formed as the comparison boundary line L3 of FIG. 6 corresponding to the width L2 of the terminal 412b, the comparison boundary line L3 has cracks. (crack) can easily occur. That is, when the camera module in which the lens driving unit is assembled receives an impact such as a fall, stress is generated at the comparison boundary line L3, and this stress may generate a crack at the comparison boundary line L3. .

In other words, based on the comparison boundary line L3, the portion of the terminal 412b indicated by the silver line, that is, the portion where the cover layer 412c is formed is relatively firmly coupled to the terminal surface 412a due to the cover layer 412c. or fixed. However, an exposed portion of the terminal 412b indicated by a solid line, that is, where the cover layer 412c is not formed, may be less firmly coupled or fixed compared to a portion indicated by a silver line. In addition, since the exposed portion may be connected to the external component by soldering, etc., an impact force received by the external component upon external impact may be directly transferred to the exposed portion.

Therefore, when the camera module is subjected to a fall or other external impact, the exposed portion of the terminal 412b may receive a greater impact than the non-exposed portion indicated by the hidden line, and due to the difference in this impact, the stress at the comparison boundary L3 this can be focused.

Stress generated at the comparison boundary line L3 may generate a crack in the terminal 412b along the comparison boundary line L3, and when stress is accumulated due to repetitive external shocks, the crack grows and the terminal 412b moves along the comparison boundary line. (L3) may be disconnected due to disconnection. If the terminal 412b is disconnected due to a crack, this may cause malfunction of the camera module.

In this embodiment, in order to suppress cracking of the terminal 412b, the length of the boundary line L1 formed between the cover layer 412c formed on the surface of the terminal 412b and the terminal 412b is the length of the terminal 412b. ) can be formed longer than the length in the width direction.

For example, as shown in FIG. 6 , the boundary line L1 may be formed in a linear shape having a bending point, that is, two equilateral shapes of an isosceles triangle. In addition, the boundary line L1 may be formed in a triangular shape, that is, a shape in which two of the three sides of the triangle are connected.

When formed in this shape, the boundary line L1 may be formed to be longer than the length of the terminal 412b in the width direction, and therefore, the stress of the terminal 412b generated by the impact is applied to the extended boundary line L1 to the comparison boundary line ( can be dispersed compared to L3).

When the stress is distributed due to the shape of the boundary line L1, even if the exposed portion of the terminal 412b is impacted in the longitudinal direction or the width direction of the terminal 412b by an external impact, stress is applied to a specific point of the boundary line L1. Since this concentration can be suppressed, generation of cracks can be suppressed.

The substrate portion 410 may include a through hole 413 formed to pass through the body portion 411 . The substrate unit 410 may include a through hole 413 through which light passing through the lens module passes. The through hole 413 may be formed to allow light passing through the lens module to reach the image sensor.

The third driving unit 420 may move the second driving unit 320 through electromagnetic interaction. The third driving unit 420 may include a coil. When power is applied to the coil of the third driving unit 420, the second driving unit 320 and the housing 310 to which the second driving unit 320 is fixed can move integrally by interaction with the second driving unit 320. there is. The third driving unit 420 may be mounted on or electrically connected to the board unit 410 . Meanwhile, the third driving unit 420 may include a through hole 421 through which light of the lens module passes. In addition, considering the miniaturization of the lens driving unit 10 (reducing the height in the z-axis direction, which is the optical axis direction), the third driving unit 420 is formed of a FP (Fine Pattern) coil to form a substrate unit 410 can be placed or mounted on The FP coil, for example, may be formed to minimize interference with the second sensor unit 720 located on the lower side. The FP coil may be formed so as not to overlap the second sensor unit 720 in the vertical direction. In this case, the opposing FP coils may be asymmetric with each other.

The base 500 may support the stator 400 from the lower side. The base 500 may movably support the second mover 300 . At this time, the base 500 may support the base unit 410 and the base unit 410 may support the second mover 300 . That is, the base 500 may directly or indirectly support the second mover 300 . A printed circuit board may be positioned below the base 500 .

The base 500 may include a through hole 510 , a foreign matter collecting unit 520 , a sensor mounting unit 530 , and a terminal receiving unit 540 .

The base 500 may include a through hole 510 formed at a position corresponding to the lens coupler 211 of the bobbin 210 . The base 500 may perform a sensor holder function to protect the image sensor. Meanwhile, an infrared ray filter may be coupled to the through hole 510 of the base 500 . Alternatively, an infrared filter may be coupled to a separate sensor holder disposed below the base 500 .

The base 500 may include, for example, a foreign matter collecting unit 520 that collects foreign matter introduced into the cover member 100 . The foreign matter collecting unit 520 is located on the upper surface of the base 500 and can collect foreign matter on the inner space formed by the cover member 100 and the base 500, including an adhesive material.

The base 500 may include a sensor mounting portion 530 to which the second sensor unit 720 is coupled. That is, the second sensor unit 720 may be mounted on the sensor mounting unit 530 . In this case, the second sensor unit 720 may sense the horizontal movement or tilt of the housing 310 by sensing the second driving unit 320 coupled to the housing 310 . As an example, two sensor mounting units 530 may be provided. A second sensor unit 720 may be positioned on each of the two sensor mounting units 530 . In this case, the second sensor unit 720 may be disposed to detect both movements of the housing 310 in the x-axis and y-axis directions.

The base 500 may include a terminal receiving portion 540 accommodating the terminal portion 412 of the substrate portion 410 . The terminal accommodating portion 540 may accommodate the terminal portion 412 of the board portion 410 . The terminal accommodating portion 540 is formed on the side of the base 500 and can accommodate at least a portion of the terminal portion 412 .

The terminal accommodating portion 540 is located on both sides of the terminal receiving groove 541 in which the terminal portion 412 is seated and the terminal receiving groove 541 and protrudes outward to support both sides of the terminal portion 412. (542).

The terminal unit 412 may be seated in the terminal unit accommodating groove 541 . The terminal receiving groove 541 may be formed on a side surface of the base 500 . The terminal receiving groove 541, for example, may be formed in a shape in which a part of the side surface of the base 500 is recessed inward. That is, the terminal unit accommodating groove 541 may be formed by the side surface of the base 500 .

The terminal support portion 542 is located on both sides of the terminal portion receiving groove 541 and protrudes outward to support both sides of the terminal portion 412 . The terminal support portion 542 may be provided in a protruding shape to support at least a portion of both side surfaces of the terminal portion 412 . That is, the terminal portion support portion 542 may prevent the terminal portion 412 accommodated in the terminal portion accommodating groove 541 from being laterally separated. The terminal support portion 542 may include a first support portion 542a supporting one side surface of the terminal portion 412 and a second support portion 542b supporting the other side surface of the terminal portion 412 . That is, the first support part 542a may support one side surface of the terminal part 412 , and the second support part 542b may support the other side surface of the terminal part 412 .

The support member 600 may connect any two or more of the first mover 200 , the second mover 300 and the base 500 . The support member 600 can elastically connect any two or more of the first mover 200, the second mover 300, and the base 500 to enable relative movement between the respective components. there is. The support member 600 may be provided as an elastic member. The support member 600 may include, for example, an upper support member 610 , a lower support member 620 , a side support member 630 and a conducting member 640 . However, the energizing member 640 is provided for energizing the upper support member 610 and the lower support member 620, and the upper support member 610, the lower support member 620, and the side support member 630 It can be explained separately from .

The upper support member 610 may include, for example, an outer portion 611 , an inner portion 612 , and a connection portion 613 . The upper support member 610 includes an outer portion 611 coupled to the housing 310, an inner portion 612 coupled to the bobbin 210, and a connecting portion elastically connecting the outer portion 611 and the inner portion 612 ( 613) may be included.

The upper support member 610 may be connected to an upper portion of the first mover 200 and an upper portion of the second mover 300 . In more detail, the upper support member 610 may be coupled to the top of the bobbin 210 and the top of the housing 310 . The inner portion 612 of the upper support member 610 is coupled to the upper coupling portion 213 of the bobbin 210, and the outer portion 611 of the upper support member 610 is coupled to the upper coupling portion 313 of the housing 310. can be combined with

The upper support member 610 may be provided by being separated into six as an example. At this time, two of the six upper support members 610 may be used to apply power to the first driving unit 220 by being energized with the lower support member 620 . Each of the two upper support members 610 may be electrically connected to each of the pair of lower support members 620a and 620b through a conducting member 640 . Meanwhile, the remaining four of the six upper support members 610 may be used to supply power to the first sensor unit 710 and transmit/receive information or signals between the control unit and the first sensor unit 710. . Also, as a modified example, two of the six upper support members 610 may be directly connected to the first driving unit 220 and four may be connected to the first sensor unit 710 .

The lower support member 620 may include, for example, a pair of lower support members 620a and 620b. That is, the lower support member 620 may include a first lower support member 620a and a second lower support member 620b. Each of the first lower support member 620a and the second lower support member 620b may be connected to a pair of lead wires of the first driving unit 220 provided as a coil to supply power. Meanwhile, the pair of lower support members 620a and 620b may be electrically connected to the substrate 410 . Through this structure, the pair of lower support members 620 may provide power supplied from the substrate 410 to the first driving unit 220 .

The lower support member 620 may include, for example, an outer portion 621, an inner portion 622, and a connection portion 623. The lower support member 620 includes an outer portion 621 coupled to the housing 310, an inner portion 622 coupled to the bobbin 210, and a connecting portion elastically connecting the outer portion 621 and the inner portion 622 ( 623) may be included.

The lower support member 620 may be connected to a lower portion of the first mover 200 and a lower portion of the second mover 300 . In more detail, the lower support member 620 may be coupled to the lower part of the bobbin 210 and the lower part of the housing 310 . The lower coupling portion of the bobbin 210 may be coupled to the inner portion 622 of the lower support member 620, and the lower coupling portion of the housing 310 may be coupled to the outer portion 621 of the lower support member 620.

One side of the side support member 630 may be coupled to the stator 400 and/or the base 500 and the other side may be coupled to the upper support member 610 and/or the second mover 300 . As an example, the side support member 630 may have one side coupled to the stator 400 and the other side coupled to the upper support member 610 . Also, in another embodiment, the side support member 630 may have one side coupled to the base 500 and the other side coupled to the second mover 300 . In this way, the lateral support member 630 elastically supports the second mover 300 so that the second mover 300 can move or tilt in the horizontal direction.

The lateral support member 630 may include a plurality of wires. In addition, the side support member 630 may include a plurality of leaf springs. The side support member 630 may be provided in the same number as the upper support member 610 as an example. That is, the lateral support members 630 may be provided in six pieces and connected to each of the six upper support members 610 provided. In this case, the side support members 630 may supply power supplied from the stator 400 or the outside to each of the upper support members 610 . As an example, the number of side support members 630 may be determined in consideration of symmetry. The lateral support members 630 may be provided with 8 pieces, 2 pieces at each corner, as an example, 4 or more pieces, one at each corner of the housing 310 .

The side support member 630 or the upper support member 610 may include, for example, a shock absorber (not shown) for shock absorption. The shock absorber may be provided on any one or more of the lateral support member 630 and the upper support member 610 . The shock absorber may be a separate member such as a damper. In addition, the shock absorber may be realized by changing the shape of at least one part of the side support member 630 and the upper support member 610 .

The conducting member 640 may electrically connect the upper support member 610 and the lower support member 620 . The conducting member 640 may be provided separately from the lateral support member 630 . Power supplied to the upper support member 610 through the conducting member 640 may be supplied to the lower support member 620 , and power may be supplied to the first driving unit 220 through the lower support member 620 . Meanwhile, as a modified example, when the upper support member 610 is directly connected to the first driving unit 220, the conducting member 640 may be omitted.

The sensor unit 700 may be used for at least one of auto focus feedback and hand shake correction feedback. The sensor unit 700 may detect the position or movement of one or more of the first mover 200 and the second mover 300 .

The sensor unit 700 may include, for example, a first sensor unit 710 and a second sensor unit 720 . The first sensor unit 710 may provide information for AF feedback by sensing a relative vertical flow of the bobbin 210 with respect to the housing 310 . The second sensor unit 720 may sense horizontal movement or tilt of the second mover 300 and provide information for OIS feedback.

The first sensor unit 710 may be located on the first mover 200 . The first sensor unit 710 may be located on the bobbin 210 . The first sensor unit 710 may be inserted into and fixed to a sensor guide groove (not shown) formed on an outer circumferential surface of the bobbin 210 . The first sensor unit 710 may include, for example, a first sensor 711 , a flexible printed circuit board 712 and a terminal unit 713 .

The first sensor 711 may detect the movement or position of the bobbin 210 . Alternatively, the first sensor 711 may detect the position of the second driving unit 320 mounted on the housing 310 . The first sensor 711 may be, for example, a hall sensor. In this case, the first sensor 711 may detect a change in relative position between the bobbin 210 and the housing 310 by detecting the magnetic force generated from the second driving unit 320 .

A first sensor 711 may be mounted on the flexible printed circuit board 712 . The flexible printed circuit board 712 may be provided in a strip shape as an example. At least a portion of the flexible circuit board 712 may be provided in a shape corresponding to the sensor guide groove recessed in the upper part of the bobbin 210 and inserted into the sensor guide groove. The flexible printed circuit board 712 may be, for example, an FPCB. That is, the flexible printed circuit board 712 is provided with flexibility and can be bent to correspond to the shape of the sensor guide groove. A terminal portion 713 may be formed on the flexible printed circuit board 712 .

The terminal unit 713 may receive power and supply power to the first sensor 711 through the flexible printed circuit board 712 . Also, the terminal unit 713 may receive a control command for the first sensor 711 or transmit a sensed value from the first sensor 711 . As an example, four terminal units 713 are provided and may be electrically connected to the upper support member 610 . In this case, two terminal units 713 may be used to receive power from the upper support member 610, and the remaining two terminal units 713 may be used to transmit/receive information or signals.

The second sensor unit 720 may be located on the stator 400 . The second sensor unit 720 may be located on an upper or lower surface of the substrate unit 410 . The second sensor unit 720, for example, may be disposed on the lower surface of the substrate unit 410 and located on the sensor mounting unit 530 formed on the base 500. The second sensor unit 720 may include a hall sensor as an example. In this case, the relative motion of the second mover 300 with respect to the stator 400 may be sensed by sensing the magnetic field of the second drive unit 320 . As an example, two or more second sensor units 720 may be provided to detect both x-axis and y-axis movements of the second mover 300 . Meanwhile, the second sensor unit 720 may be positioned so as not to overlap the FP coil of the third driving unit 420 in the vertical direction.

The adhesive accommodating groove 800 is formed in the terminal accommodating portion 540 and may receive at least a portion of an adhesive (not shown) that adheres the terminal portion 412 and the terminal accommodating portion 540 . That is, the adhesive receiving groove 800 may function as an adhesive tank for accommodating adhesive. The adhesive accommodating groove 800 may have a shape in which adhesive force with the adhesive is improved. The adhesive accommodating groove 800 may be formed concave inward on a side surface of the base 500 forming the terminal accommodating groove 541 . That is, the adhesive receiving groove 800 may be formed by recessing at least a portion of the side surface of the base 500 inward.

As an example, the adhesive receiving groove 800 may include a plurality of first receiving grooves 810 extending in the vertical direction as shown in FIG. 3 . The first accommodating groove 810 has a lower open type, and at least a part thereof may have a wider width toward the lower side. The first width W1, which is the width of the upper portion of the first accommodating groove 810, may be narrower than the second width W2, which is the width of the lower portion of the first accommodating groove 810. In this case, the first receiving groove 810 serving as an adhesive tank can accommodate more adhesive as it moves downward. Therefore, a phenomenon in which the adhesive flows downward along the first receiving groove 810 can be minimized.

The first accommodating groove 810 may be located between a plurality of first protrusions 820 formed to protrude outward from the first accommodating groove 810 . That is, the first accommodating groove 810 and the first protrusion 820 are provided in plurality and may be formed in an intersection. Meanwhile, both side surfaces of the first protrusion 820 may be formed to be rounded. In addition, both side surfaces of the first protrusion 820 may be formed to be inclined.

As a modified example, the adhesive receiving groove 800 may include a second receiving groove 830 extending in a horizontal direction from the first support part 542a to the second support part 542b, as shown in FIG. 4 . there is. The second accommodating groove 830 is located on the lower side of the side of the base 500 forming the terminal accommodating groove 541 and may be of a lower open type. That is, the width of the second accommodating groove 830 may correspond to the width of the terminal unit accommodating groove 541 .

The second accommodating groove 830 may be formed by a second protrusion 840 located on the upper side of the side surface of the base 500 and protruding outward than the second accommodating groove 830 . In this case, the second protrusion 840 and the second receiving groove 830 may have corresponding lengths in the vertical direction.

Meanwhile, in the modified example, as in the previous example, a phenomenon in which the adhesive moving downward is accommodated in the second receiving groove 830 and leaks out to the outside can be prevented.

In addition, in the modified example, it has been described that the second receiving groove 830 is formed on the lower side of the side of the base 500, but the second receiving groove 830 is formed on the upper side of the side of the base 500 and the second protrusion. 840 may be formed on the lower side of the second receiving groove 830 . Even in this case, the second accommodating groove 830 can function as a bond tank.

Furthermore, the adhesive accommodating groove 800 may be formed in a combination of the first accommodating groove 810 according to the previous example and the second accommodating groove 830 according to the modified example. Meanwhile, the adhesive accommodating groove 800 may include a side tank (not shown) positioned at a side of the terminal receiving groove 541 to prevent the adhesive from flowing out to the side.

In this embodiment, since the adhesive receiving groove 800 serves as an adhesive tank and increases the adhesive strength between the adhesive and the base 500, separation of the adhesive and the base 500 in environments such as high temperature and high humidity can be prevented. can That is, adhesion between the terminal portion 412 of the substrate portion 410 and the base 500 is improved, and thus separation during the bonding process and after bonding may be prevented.

Hereinafter, the operation of the camera module according to the present embodiment will be described.

First, the auto focus function of the camera module according to the present embodiment will be described. When power is supplied to the coil of the first driving unit 220, the first driving unit 220 moves to the second driving unit 320 due to electromagnetic interaction between the magnets of the first driving unit 220 and the second driving unit 320. will perform a move on . At this time, the bobbin 210 to which the first driving unit 220 is coupled moves integrally with the first driving unit 220 . That is, the bobbin 210 coupled to the inside of the lens module moves in the vertical direction with respect to the housing 310 . Since such movement of the bobbin 210 results in the lens module moving closer to or farther from the image sensor, in this embodiment, power is supplied to the coil of the first driving unit 220 to adjust the focus on the subject. can be performed.

Meanwhile, auto focus feedback may be applied to more precisely realize the auto focus function of the camera module according to the present embodiment. The first sensor 711 mounted on the bobbin 210 and provided as a hall sensor senses the magnetic field of the magnet of the second movable part 320 fixed to the housing 310 . Meanwhile, when the bobbin 210 moves relative to the housing 310, the amount of the magnetic field sensed by the first sensor 711 changes. The first sensor 711 detects the movement amount or position of the bobbin 210 in the z-axis direction in this way and transmits the detected value to the controller. The control unit determines whether or not to additionally move the bobbin 210 through the received sensing value. Since this process occurs in real time, the auto focus function of the camera module according to the present embodiment can be performed more precisely through auto focus feedback.

A hand shake correction function of the camera module according to the present embodiment will be described. When power is supplied to the coil of the third driving unit 420, the second driving unit 320 moves relative to the third driving unit 420 due to electromagnetic interaction between the magnets of the third driving unit 420 and the second driving unit 320. will perform the move. At this time, the housing 310 to which the second driving unit 320 is coupled moves integrally with the second driving unit 320 . That is, the housing 310 moves in a horizontal direction with respect to the base 500 . Meanwhile, a tilt of the housing 310 with respect to the base 500 may be induced. Since such movement of the housing 310 results in the lens module moving in a direction parallel to the direction in which the image sensor is placed with respect to the image sensor, in this embodiment, power is supplied to the coil of the third driving unit 420 to Image stabilization function can be performed.

Meanwhile, hand shake correction feedback may be applied to more precisely realize the hand shake correction function of the camera module according to the present embodiment. A pair of second sensor units 720 mounted on the base 500 and provided as hall sensors sense the magnetic field of the magnet of the second driving unit 320 fixed to the housing 310 . Meanwhile, when the housing 310 moves relative to the base 500, the amount of the magnetic field sensed by the second sensor unit 720 changes. The pair of second sensor units 720 detect the movement amount or position of the housing 310 in the horizontal direction (x-axis and y-axis directions) in this way and transmit the detected value to the control unit. The control unit determines whether or not to additionally move the housing 310 through the received sensing value. Since this process occurs in real time, the hand shake correction function of the camera module according to the present embodiment can be performed more precisely through hand shake correction feedback.

In the above, even though all the components constituting the embodiment of the present invention have been described as combining or operating as one, the present invention is not necessarily limited to these embodiments. That is, within the scope of the object of the present invention, all of the components may be selectively combined with one or more to operate. In addition, terms such as "include", "comprise" or "have" described above mean that the corresponding component may be present unless otherwise stated, and thus exclude other components. It should be interpreted that it may further include other components rather than All terms, including technical or scientific terms, have the same meaning as commonly understood by a person of ordinary skill in the art to which the present invention belongs, unless defined otherwise. Commonly used terms, such as terms defined in a dictionary, should be interpreted as consistent with the contextual meaning of the related art, and unless explicitly defined in the present invention, they are not interpreted in an ideal or excessively formal meaning.

The above description is merely an example of the technical idea of the present invention, and various modifications and variations can be made to those skilled in the art without departing from the essential characteristics of the present invention. Therefore, the embodiments disclosed in the present invention are not intended to limit the technical idea of the present invention, but to explain, and the scope of the technical idea of the present invention is not limited by these embodiments. The protection scope of the present invention should be construed according to the claims below, and all technical ideas within the equivalent range should be construed as being included in the scope of the present invention.

100: cover member 200: first mover
300: second mover 400: stator
500: base 600: support member
700: sensor unit 800: adhesive receiving groove

Claims (1)

a base including first to fourth corner portions;
a housing disposed on the base;
a bobbin disposed within the housing;
a magnet disposed on the housing;
a first coil disposed on the bobbin;
a substrate portion including a body portion positioned on an upper surface of the base and a terminal portion extending downward from the body portion;
an adhesive for adhering the terminal portion of the substrate portion and the base;
a second coil disposed on the body of the substrate;
an elastic member coupled to the housing and the bobbin; and
It includes first to fourth support members electrically connected to the elastic member and the substrate,
The base includes first to fourth grooves respectively formed in the first to fourth corner portions,
The lens driving unit of

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