KR102641438B1 - Lens driving device, camera module and optical apparatus - Google Patents

Abstract

This embodiment includes a base including a first side, a second side adjacent to the first side, and a first corner portion located between the first side and the second side; a housing located above the base; A magnet located in the housing; a coil portion located between the base and the housing and facing the magnet; a substrate positioned between the base and the housing; and a current conductor electrically connecting the coil portion and the substrate, wherein the current conductor includes a first conductor disposed at a position corresponding to the first corner portion of the base. .

Description

Lens driving device, camera module and optical apparatus}

This embodiment relates to lens driving devices, camera modules, and optical devices.

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

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

Among them, a representative one is a camera module that takes photos or videos of a subject. Recently, a camera module that performs an image stabilization function is being developed. Meanwhile, the camera module for the camera shake correction function mentioned above requires an electric current structure of a coil for camera shake correction and a board that supplies power to the coil.

However, in the camera module for image stabilization function according to the prior art, the solder ball that energizes the image stabilization coil and the board may bounce and cause a short circuit with other members, and tilt may occur when the coil and the board are fixed. There is a problem because there is a limit to the adhesive area between the camera shake correction spring and the base.

Furthermore, in recent years, the resolution of camera modules has increased and the outer size of the camera module has decreased, which has become an even more problematic issue due to space constraints in board design.
(Patent Document 1) KR 10-2015-0009685 A

In order to solve the above-described problem, the present embodiment seeks to provide a lens driving device that reflects the optimized design of an electric current-conducting structure that energizes a coil for camera shake correction and a substrate that supplies power to the coil.

This embodiment seeks to provide a camera module and an optical device including the lens driving device.

The lens driving device according to this embodiment includes a base including a first side, a second side adjacent to the first side, and a first corner portion located between the first side and the second side; a housing located above the base; A magnet located in the housing; a coil portion located between the base and the housing and facing the magnet; a substrate positioned between the base and the housing; and a conductive portion electrically connecting the coil portion and the substrate, wherein the conductive portion may include a first conductive portion disposed at a position corresponding to the first corner portion of the base.

The coil unit includes a first coil unit directly connected to the first energizing unit, a second coil unit located spaced apart from the first coil unit, and directly connected to the first coil unit and the second coil unit. It may include a connecting coil unit.

The vertical distance between the magnet and the coil unit may be 80 to 120 ㎛.

The first energizing part may be located on an outer surface of the substrate or the first coil part at a position corresponding to the first corner part of the base.

The base includes a third side adjacent to the second side, a fourth side adjacent to the third side and the first side, and a second corner portion located between the second side and the third side. and a third corner portion located between the third side and the fourth side, and a fourth corner portion located between the fourth side and the first side, wherein the conductive portion includes the second It may further include a second energizing part located in the corner, a third energizing part located in the third corner, and a fourth energizing part located in the fourth corner.

The coil unit includes a first coil unit directly connected to the first energizing part, a second coil unit directly connected to the third energizing part, and a third coil unit directly connected to the second energizing part. And, a fourth coil unit directly connected to the fourth energizing unit, a first connection coil unit directly connected to the first coil unit and the second coil unit, the third coil unit and the fourth coil unit. It may include a second connection coil unit that directly connects the coil unit.

The coil unit and the substrate can be electrically connected only through the first to fourth conductive units.

The shape of the first side of the coil unit may correspond to the shape of the first side of the substrate.

A bobbin located inside the housing; an AF coil portion located on the bobbin and facing the magnet; a first support member coupled to the bobbin and the housing and elastically supporting the bobbin with respect to the housing; and a second support member coupled to the base and the housing and elastically supporting the housing with respect to the base.

The second support member includes a first lateral support unit located on the first side and energized through the substrate and the fifth energizing portion, and a first lateral support unit located on the second side and energized through the substrate and the sixth energizing portion. It includes a second lateral support unit, and the distance between the first and fifth energizing parts may correspond to the distance between the first and sixth energizing parts.

The first support member further includes an upper support member coupled to the upper part of the bobbin and the upper part of the housing, and the upper support member is a first upper support unit electrically connected to one end of the second coil unit. and a second upper support unit spaced apart from the first upper support unit and electrically connected to the other end of the second coil unit, wherein the second support member electrically connects the first upper support unit and the substrate. It may include a first lateral support unit connected to and a second lateral support unit spaced apart from the first lateral support unit and electrically connecting the second upper support unit and the substrate.

The lower surface of the upper support member and the outer surface of the second support member may be joined by soldering.

The camera module according to this embodiment includes a base including a first side, a second side adjacent to the first side, and a first corner portion located between the first side and the second side; a housing located above the base; A magnet located in the housing; a coil portion located between the base and the housing and facing the magnet; a substrate positioned between the base and the housing; and a conductive portion electrically connecting the coil portion and the substrate, wherein the conductive portion may include a first conductive portion disposed at a position corresponding to the first corner portion of the base.

An optical device according to this embodiment includes a base including a first side, a second side adjacent to the first side, and a first corner portion located between the first side and the second side; a housing located above the base; A magnet located in the housing; a coil portion located between the base and the housing and facing the magnet; a substrate positioned between the base and the housing; and a conductive portion electrically connecting the coil portion and the substrate, wherein the conductive portion may include a first conductive portion disposed at a position corresponding to the first corner portion of the base.

Through this embodiment, space constraints on the design of the connection part (leg) of the camera shake correction spring are reduced.

Additionally, according to this embodiment, the adhesive area between the camera shake correction spring and the base is expanded, thereby improving workability and reliability.

In addition, according to this embodiment, it is possible to prevent solder ball penetration due to soldering between the pad of the board and the camera shake correction spring from leading to a short circuit.

In addition, according to this embodiment, the number of solder parts for conducting electricity between the camera shake correction coil and the board is reduced, so the tilt that occurs during soldering between the coil and the board can be reduced.

In addition, according to this embodiment, as the resolution increases, the diameter of the through hole through which the light passing through the lens passes increases and the outer size of the camera module decreases, but it has the advantage of giving up securing space for pattern design on the substrate.

1 is a perspective view of a lens driving device according to this embodiment.
Figure 2 is an exploded perspective view of the lens driving device according to this embodiment.
Figure 3 is a perspective view showing a partial configuration of a lens driving device according to this embodiment.
Figure 4 is an exploded perspective view showing a partial configuration of the lens driving device according to this embodiment.
Figure 5 is a plan view showing a partial configuration of a lens driving device according to this embodiment.

Hereinafter, some embodiments of the present invention will be described through exemplary drawings. When assigning reference numerals to components in each drawing, identical components are indicated with the same reference numerals as much as possible, even if they are shown in different drawings. Additionally, when describing embodiments of the present invention, if detailed descriptions of related known configurations or functions are judged to impede understanding of the embodiments of the present invention, the detailed descriptions will be omitted.

Additionally, when describing the components of an embodiment of the present invention, terms such as first, second, A, B, (a), and (b) may be used. These terms are only used to distinguish the component from other components, and the nature, sequence, or order of the component is not limited by the term. When a component is described as being "connected," "coupled," or "connected" to another component, that component may be directly connected, coupled, or connected to that other component, but may not be connected to that component or that other component. 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 when coupled to the lens driving device. Meanwhile, “optical axis direction” may be used interchangeably with the vertical direction, z-axis direction, and vertical direction.

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

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

Below, the configuration of the optical device according to this embodiment will be described.

Optical devices according to this embodiment include mobile phones, mobile phones, smart phones, portable smart devices, digital cameras, laptop computers, digital broadcasting terminals, PDAs (Personal Digital Assistants), and PMPs (Portable Multimedia Players). ), navigation, etc., but is not limited to this and any device for taking videos or photos is possible.

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

Below, the configuration of the camera module according to this embodiment will be described.

The camera module further includes a lens driving device (not shown), a lens module (not shown), an infrared cut-off filter (not shown), a printed circuit board (not shown), an image sensor (not shown), and a control unit (not shown). can do.

The lens module may include at least one lens. The lens module may include a lens and a lens barrel. The lens module may include one or more lenses (not shown) and a lens barrel that accommodates one or more lenses. However, the configuration of the lens module is not limited to the lens barrel, and any holder structure that can support one or more lenses is possible. The lens module is coupled to the lens driving device and can move together with the lens driving device. The lens module may be coupled to the inside of the lens driving device, as an example. The lens module may be screwed together with a lens driving device, as an example. As an example, the lens module may be combined with a lens driving device using an adhesive (not shown). Meanwhile, light passing through the lens module may be irradiated to the image sensor.

An infrared cut-off filter can block light in the infrared region from entering the image sensor. As an example, an infrared cut-off filter may be located between the lens module and the image sensor. The infrared cut-off filter may be located on a holder member (not shown) that is 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. As an example, an infrared filter 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.

A printed circuit board may support a lens drive device. An image sensor may be mounted on a 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 device is located on the upper side of the sensor holder. Alternatively, the lens driving device may be located outside the upper surface of the printed circuit board, and the image sensor may be located inside the upper surface of the printed circuit board. Through this structure, light passing through the lens module accommodated inside the lens driving device can be irradiated to an image sensor mounted on a printed circuit board. A printed circuit board can supply power to the lens drive device. Meanwhile, a control unit for controlling the lens driving device 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 so that its optical axis coincides with the lens module. Through this, the image sensor can acquire light that has passed through the lens module. An image sensor can output irradiated light as an image. The image sensor may be, for example, a charge coupled device (CCD), a metal oxide semiconductor (MOS), a CPD, and a CID. However, the type of image sensor is not limited to this.

The control unit may be mounted on a printed circuit board. The control unit may be located outside the lens driving device. However, the control unit may be located inside the lens driving device. The control unit can control the direction, intensity, and amplitude of the current supplied to each component of the lens driving device. The control unit may control the lens driving device to perform one or more of the autofocus function and the image stabilization function of the camera module. That is, the control unit can control the lens driving device to move the lens module in the optical axis direction, or to move or tilt the lens module in a direction perpendicular to the optical axis direction. Furthermore, the control unit can perform feedback control of the autofocus function and image stabilization function. In more detail, the control unit receives the position of the bobbin 210 or housing 310 detected by the sensor unit (not shown) and controls the power or current applied to the first driving unit 220 to the third driving unit 420. Thus, a more precise autofocus function and camera shake correction function can be provided.

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

FIG. 1 is a perspective view of a lens driving device according to this embodiment, FIG. 2 is an exploded perspective view of a lens driving device according to this embodiment, and FIG. 3 is a perspective view showing a partial configuration of a lens driving device according to this embodiment. , FIG. 4 is an exploded perspective view showing a partial configuration of the lens driving device according to the present embodiment, and FIG. 5 is a plan view showing a partial configuration of the lens driving device according to the present embodiment.

1 to 5, the lens driving device according to this embodiment includes a cover member 100, a first movable member 200, a second movable member 300, a stator 400, and a base 500. , may include a support member 600 and a sensor unit. However, the lens driving device according to this embodiment includes a cover member 100, a first movable member 200, a second movable member 300, a stator 400, a base 500, a support member 600, and a sensor. One or more of the parts may be omitted. In particular, the sensor unit can be omitted as it is configured for an autofocus feedback function and/or an image stabilization feedback function. Additionally, the lens driving device according to this embodiment may further include an electric current conduction unit 800.

The cover member 100 can form the exterior of the lens driving device. The cover member 100 may have a hexahedral shape with an open bottom. However, it is not limited to this.

The cover member 100 may be formed of a metal material, as an example. In more detail, the cover member 100 may be made of a metal plate. In this case, the cover member 100 can block electromagnetic interference (EMI). Because of these features of the cover member 100, the cover member 100 may be referred to as an EMI shield can. The cover member 100 can block radio waves generated outside the lens driving device from flowing into the cover member 100. Additionally, the cover member 100 can 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 to this.

The cover member 100 may include an upper plate 101 and a side plate 102. The cover member 100 may include an upper plate 101 and a side plate 102 extending downward from the outside of the upper plate 101. The lower end of the side plate 102 of the cover member 100 may be mounted on the base 500. The cover member 100 may be mounted on the base 500 with its inner surface in close contact with part or all of the side surface of the base 500. The first movable member 200, the second movable member 300, the stator 400, and the support member 600 may be located in the internal space formed by the cover member 100 and the base 500. Through this structure, the cover member 100 can protect internal components from external impact and simultaneously prevent penetration of external contaminants. However, it is not limited to this, and the lower end of the side plate 102 of the cover member 100 may be directly coupled to the printed circuit board located below the base 500.

The cover member 100 may include an opening 110 formed in the upper plate 101 to expose the lens module. The opening 110 may be provided in a shape corresponding to 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. Meanwhile, light introduced through the opening 110 may pass through the lens module. At this time, the light passing through the lens module can be acquired as an image by the image sensor.

The first movable member 200 may be combined with a lens module, which is a component of a camera module (however, the lens module may be described as a component of a lens driving device). The first movable member 200 can accommodate the lens module inside. The outer circumferential surface of the lens module may be coupled to the inner circumferential surface of the first movable member 200. The first movable member 200 may move integrally with the lens module through interaction with the second movable member 300 and/or the stator 400. That is, the first movable member 200 can move together with the lens module.

The first movable member 200 may include a bobbin 210 and a first driving unit 220. The first movable member 200 may include a bobbin 210 coupled to the lens module. The first mover 200 may include a first driving part 220 that is located on the bobbin 210 and moves by electromagnetic interaction with the second driving part 320.

Bobbin 210 may be combined with a lens module. In more detail, the outer peripheral surface of the lens module may be coupled to the inner peripheral surface of the bobbin 210. The first driving unit 220 may be coupled to the bobbin 210. 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 move relative to the housing 310 in the optical axis direction.

The bobbin 210 may include a lens receiving part 211, a first driving part coupling part 212, and an upper coupling part 213.

The bobbin 210 may include a top and bottom open lens receiving portion 211 on the inside. The bobbin 210 may include a lens receiving portion 211 formed on the inside. A lens module may be coupled to the lens accommodating portion 211. A screw thread having a shape corresponding to a screw thread formed on the outer circumferential surface of the lens module may be formed on the inner peripheral surface of the lens accommodating portion 211. That is, the lens accommodating portion 211 may be screwed to the lens module. An adhesive may be interposed between the lens module and the bobbin 210. At this time, the adhesive may be an epoxy that is cured by ultraviolet rays (UV) or heat. That is, the lens module and the bobbin 210 may be bonded using ultraviolet curing epoxy and/or heat curing epoxy.

The bobbin 210 may include a first driving unit coupling portion 212 on which the first driving unit 220 is disposed. The first drive unit coupling portion 212 may be formed integrally with the outer surface of the bobbin 210. Additionally, 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. As an example, the first driving unit coupling portion 212 may be formed by recessing a portion of the outer surface of the bobbin 210 to correspond to the shape of the first driving unit 220. At this time, the coil of the first driving unit 220 may be directly wound on the first driving unit coupling unit 212. As a variation, the first driving unit coupling portion 212 may be formed as an upper or lower open type. At this time, the coil of the first driving unit 300 may be inserted and coupled to the first driving unit coupling unit 212 through the open portion in a pre-wound 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 and coupled to a groove or hole (not shown) of the inner part 612 of the upper support member 610. At this time, the protrusion of the upper coupling part 213 can be heat-sealed while inserted into the hole of the inner part 612 to fix the upper support member 610.

The first driving unit 220 may be located in the bobbin 210. The first driving unit 220 may be located opposite to the second driving unit 320. The first driving unit 220 may move the bobbin 210 with respect to the housing 310 through electromagnetic interaction with the second driving unit 320.

The first driving unit 220 may include a coil. At this time, the first driving part 220 may be called an AF coil part (Auto Focus coil part). Additionally, the first driving unit 220 may be referred to as a ‘first coil unit’ to distinguish it from other components provided as coil units. The AF coil unit may be located in the bobbin 210. The AF coil unit may be guided by the first driving unit coupling unit 212 and wound on the outer surface of the bobbin 210. Additionally, in another embodiment, the AF coil unit may be independently provided with four coils and disposed on the outer surface of the bobbin 210 so that two neighboring coils are at an angle of 90° to each other. The AF coil unit may face the driving magnet unit of the second driving unit 320. That is, the AF coil unit may be arranged to interact electromagnetically with the driving magnet unit.

The AF coil unit may include a pair of lead wires (not shown) for power supply. At this time, the pair of lead wires of the AF coil unit may be electrically connected to the first and second upper support units 614 and 615, which are separate components of the upper support member 610. That is, the AF coil unit can receive power through the upper support member 610. Meanwhile, when power is supplied to the AF coil unit, an electromagnetic field may be formed around the AF coil unit. As a modified example, the first driving unit 220 may include a magnet unit. At this time, the second driving unit 320 may include a coil unit.

The second movable person 300 can move for the hand shake correction function. The second movable member 300 is located on the outside of the first movable member 200, opposite to the first movable member 200, and moves the first movable member 200 or operates between the first movable member 200 and the first movable member 200. We can move together. The second movable member 300 may be movably supported by the stator 400 and/or the base 500 located below. The second movable member 300 may be located in the inner space of the cover member 100.

The second movable member 300 may include a housing 310 and a second driving unit 320. The second movable member 300 may include a housing 310 located outside the bobbin 210. Additionally, the second movable member 300 may include a second driving part 320 that is located opposite to the first driving part 220 and is 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 housing 310 may, as an example, have a hexahedral shape including four sides. However, the shape of the housing 310 may be any shape that can be placed inside the cover member 100. The housing 310 is made of an insulating material, and may be made of an injection molded product considering productivity.

Housing 310 may be located on the upper side of base 500. The housing 310 is a movable part for OIS operation and may be placed at a certain distance from the cover member 100. 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 second driving unit 320 may be fixed to the cover member 100. An upper support member 610 may be coupled to the upper part of the housing 310.

The housing 310 may include an inner space 311, a second driving part coupling part 312, and an upper coupling part 313.

The upper and lower sides of the housing 310 are open so that the first movable member 200 can be moved up and down. The housing 310 may include an inner space 311 that is open at the top and bottom. The bobbin 210 may be movably disposed in the inner space 311. That is, the inner space 311 may be provided in a shape corresponding to the bobbin 210. Additionally, the inner peripheral surface of the housing 310 forming the inner space 311 may be positioned spaced apart from the outer peripheral surface of the bobbin 210.

The housing 310 may include a second driving unit coupling portion 312 formed on a side surface in a shape corresponding to the second driving unit 320 and accommodating the second driving unit 320. That is, the second driving unit coupling portion 312 can accommodate and secure the second driving unit 320. The second driving unit 320 may be fixed to the second driving unit coupling part 312 with an adhesive (not shown). Meanwhile, the second driving unit coupling portion 312 may be located on the inner peripheral 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. Additionally, as an example, the second driving unit coupling portion 312 may have an open lower portion. 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 second driving unit coupling portion 312 may be provided in four pieces. A second driving unit 320 may be coupled to each of the four second driving unit coupling parts 312. Meanwhile, the second driving unit coupling portion 312 may be formed at a corner where adjacent sides of the housing 310 meet. Alternatively, the second driving unit coupling portion 312 may be formed on the side 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 and coupled to a groove or hole (not shown) of the outer portion 611 of the upper support member 610. At this time, the protrusion of the upper coupling part 313 can be heat-sealed while inserted into the hole of the outer part 611 to fix the upper support member 610.

The housing 310 may include an upper stopper 315 protruding from one surface. The housing 310 may include an upper stopper 315 that protrudes upward from the upper surface. The upper stopper 316 may protrude upward from the housing 310. The upper stopper 316 may overlap the cover member 100 in the vertical direction. When the housing 310 moves upward through this structure, the upper stopper 316 and the cover member 100 may come into contact, thereby restricting the movement of the housing 310. That is, the upper stopper 316 can limit the upper limit of movement by the mechanism of the housing 310.

The second driving unit 320 may be located opposite to the first driving unit 220. The second driving unit 320 can move the first driving unit 220 through electromagnetic interaction with the first driving unit 220. The second driving unit 320 may include a magnet unit. At this time, the second driving unit 320 is a magnet unit for driving and may be referred to as a ‘driving magnet unit.’ The driving magnet unit may be located in the housing 310. The driving magnet part may be fixed to the second driving part coupling part 312 of the housing 310. As an example, the driving magnet unit may include four magnets independently as shown in FIG. 2 and may be arranged in the housing 310 so that two neighboring magnets form an angle of 90° to each other. That is, the driving magnet unit can promote efficient use of the internal volume through magnets mounted at equal intervals on the four sides of the housing 310. Additionally, the driving magnet unit may be attached to the housing 310 with an adhesive. However, it is not limited to this. Meanwhile, as described above, the first driving unit 220 may include a magnet unit and the second driving unit 320 may include a coil unit.

The stator 400 may be located below the second movable member 300. The stator 400 may face the second movable member 300. The stator 400 may support the second movable member 300 movably. The stator 400 can move the second movable member 300. At this time, the first movable member 200 may also move together with the second movable member 300. Additionally, through holes 411 and 421 corresponding to the lens module may be located in the center of the stator 400.

The stator 400 may include a substrate 410 and a third driving unit 420, as an example. The stator 400 may include a substrate 410 located between the third driving unit 420 and the base 500. Additionally, the stator 400 may include a third driving unit 420 positioned opposite to the lower side of the second driving unit 320.

The substrate 410 may include a flexible printed circuit board (FPCB), which is a flexible circuit board. The substrate 410 may be positioned between the base 500 and the housing 310. The substrate 410 may be positioned between the third driving unit 420 and the base 500. The substrate 410 may supply power to the third driving unit 420. The substrate 410 may supply power to the first driving unit 220 or the second driving unit 320. As an example, the substrate 410 may supply power to the AF coil unit through the lateral support member 630 and the upper support member 610. Additionally, the substrate 410 may supply power to the AF sensor unit (not shown) through the lateral support member 630 and the upper support member 610.

The substrate 410 may include, as an example, a through hole 411 and a terminal portion 412. The substrate 410 may include a through hole 411 through which light passing through the lens module passes. The substrate 410 may include a terminal portion 412 that is bent downward and exposed to the outside. At least a portion of the terminal portion 412 is exposed to the outside and can be connected to an external power source, and power can be supplied to the board 410 through this.

The third driving unit 420 can move the second driving unit 320 through electromagnetic interaction. The third driving unit 420 may include a coil unit. At this time, the third driving part 420 may be referred to as an OIS coil part (Optical Image Stabilization coil part). Additionally, the third driving unit 420 may be called a ‘second coil unit’ to distinguish it from the first coil unit. Of course, the coil part of the third driving part 420 may be called the first coil part, and the coil part of the first driving part 220 may be called the second coil part. The OIS coil unit may be located on the substrate 410. The OIS coil unit may be located between the base 500 and the housing 310. The OIS coil unit may face the driving magnet unit. When power is applied to the OIS coil unit, the second driving unit 320 and the housing 310 to which the second driving unit 320 is fixed can be moved as one due to the interaction between the OIS coil unit and the driving magnet unit.

The OIS coil unit may be formed of a pattern coil (FP coil, fine pattern coil) mounted on the substrate 410. In this case, it can be effective in terms of miniaturization of the lens driving device (lowering the height in the z-axis direction, which is the optical axis direction). As an example, the OIS coil unit may be formed to minimize interference with the OIS sensor unit 700 located below. The OIS coil unit may be positioned so as not to overlap the OIS sensor unit 700 in the vertical direction.

The OIS coil unit may include first to fourth coil units 422, 423, 424, and 425 that are spaced apart from each other. The first coil unit 422 may be located in the first corner portion 505 of the base 500. The second coil unit 423 may be located in the third corner portion 507 of the base 500. The third coil unit 424 may be located in the second corner portion 506 of the base 500. The fourth coil unit 425 may be located in the fourth corner portion 508 of the base 500. The first coil unit 422 may be directly connected to the first energizing unit 801. The second coil unit 423 may be directly connected to the third energizing unit 803. The third coil unit 424 may be directly connected to the second energizing unit 802. The fourth coil unit 425 may be directly connected to the fourth energizing unit 804. That is, the first and second coil units 422 and 423 may be positioned diagonally as shown in FIG. 3. Additionally, the third and fourth coil units 424 and 425 may be positioned diagonally as shown in FIG. 3 . As an example, the first coil unit 422, the third coil unit 424, the second coil unit 423, and the fourth coil unit 425 are sequentially arranged in a counterclockwise direction as shown in FIG. 3. It can be.

The OIS coil unit may include a first connection coil unit 426 and a second connection coil unit 427. The first connection coil unit 426 may directly connect the first coil unit 422 and the second coil unit 423. The second connection coil unit 427 can directly connect the third coil unit 424 and the fourth coil unit 425.

The OIS coil unit may include a body unit 428 where the first to fourth coil units 422, 423, 424, and 425 are disposed. The body portion 428 may provide an electricity conduction structure to the first to fourth coil units 422, 423, 424, and 425. The body portion 428 may be a printed circuit board. However, it is not limited to this. The shape of the first side 501 of the OIS coil unit may correspond to the shape of the first side 501 of the substrate 410. The body portion 428 of the OIS coil unit and the substrate 410 may be formed, at least in part, to have sizes and shapes that correspond to each other. Through this structure, even if the diameter of the through hole 421 is increased to improve resolution, it is possible to secure a space for the first to fourth coil units 422, 423, 424, and 425.

The vertical distance (optical axis direction) between the driving magnet unit and the OIS coil unit may be 100 ㎛. Additionally, the vertical distance between the driving magnet unit and the OIS coil unit may be 80 to 120 ㎛. Since the distance between the driving magnet unit and the OIS coil unit affects the electromagnetic interaction force between the driving magnet unit and the OIS coil unit, in this embodiment, even if the number of turns of the OIS coil is reduced, the distance between the driving magnet unit and the OIS coil unit is reduced. By reducing the distance, electromagnetic interaction force for OIS operation can be secured.

The third driving unit 420 may be provided with a through hole 421 through which light from the lens module passes. The through hole 421 may have a diameter corresponding to the diameter of the lens module. The through hole 421 of the third driving unit 420 may have a diameter corresponding to the through hole 411 of the substrate 410. The through hole 421 of the third driving unit 420 may have a diameter corresponding to the through hole 510 of the base 500. As an example, the through hole 421 may be circular. However, it is not limited to this.

The base 500 may be located below the bobbin 210. Base 500 may be located below the housing 310. The base 500 may support the second movable member 300. A printed circuit board may be located on the lower side of the base 500. The base 500 can perform a sensor holder function to protect an image sensor mounted on a printed circuit board.

The base 500 may include a through hole 510, an extension part 520, a sensor mounting part 530, and a foreign matter collecting part (not shown).

The base 500 may include a through hole 510 formed at a position corresponding to the lens receiving portion 211 of the bobbin 210. Meanwhile, an infrared ray filter may be coupled to the through hole 510 of the base 500. However, an infrared filter may be coupled to a separate sensor holder placed below the base 500.

The base 500 may include an extension portion 520 extending upward from the top surface. The extension portion 520 may protrude upward from the upper surface of the base 500. The extension part 520 may be located in the first corner part 505. The extension portion 520 may include first to fourth protrusions formed on each of the first to fourth corner portions 505, 506, 507, and 508 of the base 500. First to fourth grooves having shapes corresponding to the first to fourth protrusions may be formed on the outer portion of the housing 310. First to fourth protrusions may be accommodated in pairs in the first to fourth grooves. That is, at least a portion of the housing 310 may be located inside the extension portion 520. Through this structure, movement of the housing 310 in the horizontal direction (direction perpendicular to the optical axis) may be restricted. That is, the extension 520 of the base 500 may function as a stopper for lateral movement of the housing 310. A damper (not shown) may be applied between the extension 520 of the base 500 and the housing 310. The damper can prevent resonance phenomenon that may occur in autofocus feedback control and/or image stabilization feedback control.

The base 500 may include a sensor mounting unit 530 to which the OIS sensor unit 700 is coupled. That is, the OIS sensor unit 700 may be mounted on the sensor mounting unit 530. At this time, the OIS sensor unit 700 may detect the horizontal movement or tilt of the housing 310 by detecting the second driving unit 320 coupled to the housing 310. As an example, two sensor mounting units 530 may be provided. An OIS sensor unit 700 may be located in each of the two sensor mounting units 530. In this case, the OIS sensor unit 700 may include a first-axis sensor 710 and a second-axis sensor 720 arranged to detect movement in both the x-axis and y-axis directions of the housing 310. there is.

The base 500 may include a foreign matter collecting unit that collects foreign matter flowing into the cover member 100. The foreign matter collecting unit is located on the upper surface of the base 500 and can collect foreign substances on the inner space formed by the cover member 100 and the base 500, including adhesive materials.

The base 500 may include first to fourth sides 501, 502, 503, and 504 arranged sequentially adjacent to each other. That is, the first side 501 may be adjacent to the second and fourth sides 502 and 504. The second side 502 may be adjacent to the first and third sides 501 and 503. The third side 503 may be adjacent to the second and fourth sides 502 and 504. The fourth side 504 may be adjacent to the third and first sides 503 and 501. The base 500 may include first to fourth corner portions 505, 506, 507, and 508 located between the first to fourth side surfaces 501, 502, 503, and 504. That is, the first corner portion 505 may be located between the first and second sides 501 and 502. A second corner portion 506 may be located between the second and third sides 502 and 503. A third corner portion 507 may be located between the third and fourth sides 503 and 504. A fourth corner portion 508 may be located between the fourth and first sides 504 and 501.

The support member 600 may connect any two or more of the first movable member 200, the second movable member 300, the stator 400, and the base 500. The support member 600 elastically connects any two or more of the first movable member 200, the second movable member 300, the stator 400, and the base 500 to allow relative movement between each component. We can support you to make this possible. At least a portion of the support member 600 may be formed to have elasticity. In this case, the support member 600 may be called an elastic member or spring.

The support member 600 may include, as an example, an upper support member 610 and a lateral support member 630. At this time, the upper support member 610 may be called ‘spring for auto focus’, ‘elastic member for AF’, etc. Additionally, the lateral support member 630 may be referred to as 'spring for hand shake correction', 'elastic member for OIS', etc. Additionally, the support member 600 may further include a lower support member (not shown), as an example.

The upper support member 610 may be coupled to the bobbin 210 and the housing 310. The upper support member 610 can elastically support the bobbin 210 with respect to the housing 310. The upper support member 610 may include, as an 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 connection 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 the upper part of the first movable member 200 and the upper part of the second movable member 300. In more detail, the upper support member 610 may be coupled to the upper part of the bobbin 210 and the upper part 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, as an example, may be provided separately as a pair and used to supply power to the AF coil unit, etc. The upper support member 610 may include a first upper support unit 614 and a second upper support unit 615 that are spaced apart from each other. The first upper support unit 614 may be electrically connected to one end of the AF coil unit, and the second upper support unit 615 may be electrically connected to the other end of the AF coil unit. The upper support member 610 can supply power to the AF coil unit through this structure. As an example, the upper support member 610 may receive power from the substrate 410 through the side support member 630. The upper support member 610 may be provided separately into six pieces, as an example. At this time, four of the six upper support members 610 may be connected to the AF sensor unit and the remaining two may be connected to the AF coil unit.

The lower support member may include, for example, an outer portion, an inner portion, and a connection portion. The lower support member may include an outer portion coupled to the housing 310, an inner portion coupled to the bobbin 210, and a connection portion elastically connecting the outer portion and the inner portion. As an example, the lower support member may be formed integrally. However, it is not limited to this. As a variation, the lower support members may be provided separately as a pair and used to supply power to the AF coil unit, etc.

The lateral support member 630 may be coupled to the base 500 and the housing 310. The lateral support member 630 can elastically support the housing 310 with respect to the base 5000. One side of the lateral support member 630 is coupled to the stator 400 and/or the base 500. The other side may be coupled to the upper support member 610 and/or the housing 310. As an example, one side of the lateral support member 630 may be coupled to the base 500 and the other side may be coupled to the housing 310. Also, in another embodiment, one side of the lateral support member 630 may be coupled to the stator 400 and the other side may be coupled to the upper support member 610. Through this structure, the lateral support member ( 630 elastically supports the second movable member 300 with respect to the stator 400 so that the second movable member 300 can move or tilt in the horizontal direction. The lateral support member 630 , may include a leaf spring as an example. Alternatively, the lateral support member 630 may include a plurality of wires as a modified example. Meanwhile, the lateral support member 630 is integrated with the upper support member 610. It can be formed as

The lateral support member 630 may include a lower part 631, an upper part 632, and a connection part 633. The lateral support member 630 may include a lower portion 631 coupled to the base 500. The lateral support member 630 may include an upper portion 632 coupled to the housing 310. The lateral support member 630 may include a connection portion 633 connecting the lower portion 631 and the upper portion 632.

The lateral support member 630 may be electrically connected to the substrate 410 at one end, and may be electrically connected to the upper support member 610 at the other end. As an example, the lateral support members 630 may be provided in four pieces. That is, the lateral support member 630 may include first to fourth lateral support units 636, 637, 638, and 639 arranged to be spaced apart from each other. The lateral support member 630 may include a first lateral support unit 636 located on the first side 501 of the base 500. The lateral support member 630 may include a second lateral support unit 637 located on the second side 502. The lateral support member 630 may include a third lateral support unit 638 located on the third side 503. The lateral support member 630 may include a fourth lateral support unit 639 located on the fourth side 504. That is, the first to fourth lateral support units 636, 637, 638, and 639 may be arranged adjacent to each other in succession.

The first side support unit 636 may electrically connect the first upper side support unit 614 and the substrate 410. Additionally, the third lateral support unit 638 may electrically connect the second upper support unit 615 and the substrate 410. Through this structure, the upper support member 610 can be electrically connected to the substrate 410. Furthermore, the substrate 410 can supply power to the AF coil unit connected to the upper support member 610. The first lateral support unit 636 may be energized through the substrate 410 and a first energization unit (not shown). The third lateral support unit 638 may be energized through the substrate 410 and a second energization unit (not shown). The first and second energizing units may be arranged to be spaced apart from the energizing unit 800. The first and second energizing units may be solder balls formed by soldering. In this embodiment, as mentioned, the separation space between the first and second energizing units and the energizing part 800 is secured, so the solder balls of the first and second energizing units penetrate and short the energizing part 800. This phenomenon can be minimized.

The side support member 630 or the upper support member 610 may include, as an example, a shock absorber (not shown) for shock absorption. The shock absorber may be provided on one or more of the lateral support member 630 and the upper support member 610. The shock absorbing unit may be a separate member such as a damper. Additionally, the shock absorber may be realized by changing the shape of one or more of the lateral support member 630 and the upper support member 610.

The sensor unit may be used for any one or more of autofocus feedback and image stabilization feedback. The sensor unit may detect the position or movement of one or more of the first movable member 200 and the second movable member 300.

The sensor unit may include an AF sensor unit and an OIS sensor unit 700 as an example. The AF sensor unit may sense the relative vertical movement of the bobbin 210 with respect to the housing 310 and provide information for AF feedback. The OIS sensor unit 700 may detect horizontal movement or tilt of the second movable person 300 and provide information for OIS feedback.

The AF sensor unit may include, for example, an AF sensor (not shown), a sensor substrate (not shown), and a sensing magnet (not shown).

The AF sensor may be placed in the housing 310. The AF sensor may be placed at the top of the housing 310. At this time, the sensing magnet may be placed on the top of the bobbin 210. The AF sensor may be mounted on a sensor board. The AF sensor may be placed in the housing 310 while being mounted on a sensor board. The AF sensor can detect the position or movement of the bobbin 210. As an example, the AF sensor can detect the position or movement of the bobbin 210 by detecting a sensing magnet disposed on the bobbin 210. As an example, the AF sensor may be a Hall sensor that detects the magnetic force of a sensing magnet. However, it is not limited to this.

An AF sensor may be mounted on the sensor board. The sensor substrate may be placed in the housing 310. The sensor substrate may be electrically connected to the upper support member 610. Through this structure, the sensor board can supply power to the AF sensor and transmit and receive information or signals from the control unit. The sensor substrate may include a terminal portion (not shown). The upper support member 610 may be electrically connected to the terminal portion.

The sensing magnet may be placed on the bobbin 210. At this time, the sensing magnet may be called a 'second magnet' to distinguish it from the 'first magnet', which is a driving magnet. The lens driving device according to this embodiment may further include a compensation magnet (not shown) disposed on the bobbin 210 and positioned symmetrically with the sensing magnet with respect to the center of the bobbin 210. The compensation magnet may be called a 'third magnet' to distinguish it from the first and second magnets. The compensation magnet may be arranged to achieve magnetic force balance with the sensing magnet. That is, the compensation magnet can be arranged to resolve the magnetic force imbalance caused by the sensing magnet. The sensing magnet may be placed on one side of the bobbin 210, and the compensation magnet may be placed on the other side of the bobbin 210.

The OIS sensor unit 700 may be located on the stator 400. The OIS sensor unit 700 may be located on the upper or lower surface of the substrate 410. As an example, the OIS sensor unit 700 may be located on the sensor mounting unit 530 formed on the base 500 and disposed on the lower surface of the substrate 410. The OIS sensor unit 700 may include a Hall sensor as an example. In this case, the relative movement of the second movable member 300 with respect to the stator 400 can be sensed by sensing the magnetic field of the second driving unit 320. As an example, the OIS sensor unit 700 can detect both the x-axis and y-axis movements of the second movable person 300, including the first axis sensor 710 and the second axis sensor 720. Meanwhile, the OIS sensor unit 700 may be positioned so as not to overlap the FP coil of the third driving unit 420 in the vertical direction.

The current conductor 800 may electrically connect the OIS coil unit and the substrate 410. The energizing part 800 may include first to fourth energizing parts 801, 802, 803, and 804 that are spaced apart from each other. The first to fourth energizing parts 801, 802, 803, and 804 may be arranged in pairs with the first to fourth corner parts 505, 506, 507, and 508 of the base 500.

The OIS coil unit and the substrate 410 can be electrically connected only by the first to fourth conductive units (801, 802, 803, and 804). That is, the OIS coil portion and the substrate 410 can be energized only by the four energizing portions 801, 802, 803, and 804.

The first energizing part 801 may be located closer to the first corner part 505 than the first side 501 and the second side 502 of the base 500. The first energizing part 801 may be located on an imaginary line connecting the extension part 520 of the base 500 and the center of the base 500. The distance between the first energizing part 801 and the first lateral support unit 636 may correspond to the distance between the first energizing part 801 and the second lateral supporting unit 637.

The second energizing part 802 may be located closer to the second corner part 506 than the second side 502 and the third side 503 of the base 500. The second energizing part 802 may be located on an imaginary line connecting the extension part 520 of the base 500 and the center of the base 500. The distance between the second energizing part 802 and the second lateral support unit 637 may correspond to the distance between the second energizing part 802 and the third lateral supporting unit 638.

The third energizing portion 803 may be located closer to the third corner portion 507 than the third side 503 and fourth side 504 of the base 500. The third energizing part 803 may be located on an imaginary line connecting the extension part 520 of the base 500 and the center of the base 500. The distance between the third energizing part 803 and the third lateral support unit 638 may correspond to the distance between the third energizing part 803 and the fourth lateral supporting unit 639.

The fourth energizing part 804 may be located closer to the fourth corner part 508 than the fourth side 504 and the first side 501 of the base 500. The fourth energizing portion 804 may be located on an imaginary line connecting the extension portion 520 of the base 500 and the center of the base 500. The distance between the fourth energizing part 804 and the fourth lateral support unit 639 may correspond to the distance between the fourth energizing part 804 and the first lateral supporting unit 636.

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

First, the autofocus function of the camera module according to this embodiment will be described. When power is supplied to the AF coil part of the first driving part 220, the first driving part 220 is connected to the second driving part 320 by electromagnetic interaction between the AF coil part and the magnet part of the second driving part 320. Movement is performed for . At this time, the bobbin 210 to which the first driving part 220 is coupled moves integrally with the first driving part 220. That is, the bobbin 210 with the lens module coupled to the inside moves in the optical axis direction (up and down direction) with respect to the housing 310. Since this movement of the bobbin 210 results in the lens module moving closer to or moving away from the image sensor, in this embodiment, power is supplied to the AF coil unit of the first driving unit 220 to control the subject. Focus control can be performed.

Meanwhile, in the camera module according to this embodiment, autofocus feedback can be applied to more precisely realize the autofocus function. The AF sensor disposed in the housing 310 and equipped with a Hall sensor detects the magnetic field of the sensing magnet fixed to the bobbin 210. Accordingly, when the bobbin 210 moves relative to the housing 310, the amount of magnetic field detected by the AF sensor changes. The AF sensor detects the movement amount of the bobbin 210 in the z-axis direction or the position of the bobbin 210 in this manner and transmits the detection value to the control unit. The control unit determines whether to perform additional movement of the bobbin 210 based on the received detection value. Since this process occurs in real time, the autofocus function of the camera module according to this embodiment can be performed more precisely through autofocus feedback.

The hand shake correction function of the camera module according to this embodiment will be described. When power is supplied to the OIS coil part of the third driving part 420, the second driving part 320 is connected to the third driving part 420 by electromagnetic interaction between the OIS coil part and the driving magnet part of the second driving part 320. movement is performed. 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 the horizontal direction with respect to the base 500. However, at this time, the housing 310 may be tilted with respect to the base 500. At this time, the bobbin 210 also moves integrally with the housing 310. Therefore, this 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, so in this embodiment, the OIS coil part of the third driving unit 420 By supplying power, the 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 this embodiment. A pair of OIS sensor units 700 mounted on the base 500 and equipped with Hall sensors detect the magnetic field of the driving magnet unit of the second driving unit 320 fixed to the housing 310. Accordingly, when the housing 310 moves relative to the base 500, the amount of magnetic field detected by the OIS sensor unit 700 changes. The pair of OIS sensor units 700 detects the amount of movement or position of the housing 310 in the horizontal direction (x-axis and y-axis directions) in this manner and transmits the detection value to the control unit. The control unit determines whether to perform additional movement of the housing 310 based on the received detection value. Since this process occurs in real time, the camera module's camera module according to this embodiment's camera shake correction function can be performed more precisely through hand shake correction feedback.

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

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

100: cover member 200: first movable member
300: second movable 400: stator
500: Base 600: Support member
700: OIS sensor unit 800: Electricity unit

Claims (20)

Base;
a housing disposed on the base;
a bobbin disposed within the housing;
a first coil disposed on the bobbin;
A magnet disposed in the housing;
a substrate disposed on the base;
a coil portion disposed on the substrate and including a second coil; and
It includes a current conducting part that electrically connects the substrate and the coil part,
The housing includes a first corner area and a second corner area arranged diagonally from each other, and a third corner area and a fourth corner area arranged diagonally from each other,
The magnet includes a first magnet disposed in the first corner area of the housing, a second magnet disposed in the second corner area of the housing, and a third magnet disposed in the third corner area of the housing. , including a fourth magnet disposed in the fourth corner area of the housing,
The second coil includes a first coil unit facing the first magnet, a second coil unit facing the second magnet, a third coil unit facing the third magnet, and a third coil unit facing the fourth magnet. It includes a fourth coil unit, a first connection coil unit connecting the first coil unit and the second coil unit, and a second connection coil unit connecting the third coil unit and the fourth coil unit; ,
The first coil unit is electrically connected to the second coil unit through the first connection coil unit,
The third coil unit is electrically connected to the fourth coil unit through the second connection coil unit,
The current conducting part includes a first conducting part and a second conducting part,
The first energizing part is connected to one end of the first coil unit,
A lens driving device wherein the second energizing unit is connected to one end of the second coil unit. According to paragraph 1,
an upper support member connecting the bobbin and the housing; and
It includes a lateral support member electrically connecting the substrate and the upper support member,
The upper support member includes a first upper support unit electrically connected to one end of the first coil, and a second upper support unit spaced apart from the first upper support unit and electrically connected to the other end of the first coil. do,
The lateral support member includes a first lateral support unit that electrically connects the substrate and the first upper support unit, and a second support member that is spaced apart from the first lateral support unit and electrically connects the substrate and the second upper support unit. 2 Lens driving device including a lateral support unit. According to paragraph 1,
A lens driving device wherein the electric current conductor is disposed at a corner of the base. According to paragraph 3,
The corner portion of the base includes a first corner portion disposed between a first side of the base and a second side of the base,
The electrical conductive portion includes a first electrical conductive portion disposed in the first corner portion of the base,
A lens driving device wherein the distance between the first energizing part and the first side of the base is equal to the distance between the first energizing part and the second side of the base. According to paragraph 3,
The corner portion of the base includes an extension portion extending from the upper surface of the base,
A lens driving device wherein the electric current conductor is disposed within the extension part. According to paragraph 1,
A lens driving device wherein the distance between the magnet and the coil portion is 80 to 120 ㎛. According to paragraph 1,
When viewed from above, the current conducting portion is disposed between two adjacent sides of the coil portion,
When viewed from above, the energizing part is spaced apart from the two adjacent sides of the coil part at the same distance. According to paragraph 1,
The energizing part includes four energizing parts,
A lens driving device in which the coil unit and the substrate are energized only by four energizing units. delete According to paragraph 1,
The first connection coil unit is a lens driving device that connects the other end of the first coil unit and the other end of the second coil unit. According to clause 10,
The energizing part includes a third energizing part and a fourth energizing part,
The third energizing part is connected to one end of the third coil unit,
The fourth energizing unit is connected to one end of the fourth coil unit. According to clause 11,
The second connection coil unit is a lens driving device that connects the other end of the third coil unit and the other end of the fourth coil unit. According to paragraph 2,
The first lateral support unit is coupled to the substrate through a fifth conductive portion,
The second lateral support unit is coupled to the substrate through a sixth electrical conductor,
A lens driving device wherein the current conductive unit includes a first electrical conductor that is spaced apart from the fifth electrical conductor and the sixth electrical conductor at the same distance. According to clause 5,
The extension portion of the base includes a groove formed on an inner surface,
A lens driving device wherein at least a portion of the electrically conductive portion is disposed in the groove of the extension portion of the base. According to paragraph 1,
The first connection coil unit is a lens driving device that connects an inner part of the first coil unit and an inner part of the second coil unit. According to paragraph 1,
The first connection coil unit and the second connection coil unit are formed of pattern coils. According to paragraph 2,
A lens driving device in which the lower surface of the upper support member and the outer surface of the side support member are joined by soldering. Base;
a housing disposed on the base;
a bobbin disposed within the housing;
a first coil disposed on the bobbin;
A magnet disposed in the housing;
a substrate disposed on the base;
a coil portion disposed on the substrate and including a second coil; and
It includes a current conducting part that electrically connects the substrate and the coil part,
The second coil includes a first coil unit and a second coil unit arranged diagonally from each other, a third coil unit and a fourth coil unit arranged diagonally from each other, and the first coil unit and the second coil unit. It includes a first connection coil unit connecting, and a second connection coil unit connecting the third coil unit and the fourth coil unit,
The first coil unit is electrically connected to the second coil unit through the first connection coil unit,
The third coil unit is electrically connected to the fourth coil unit through the second connection coil unit,
The current conducting part includes a first conducting part and a second conducting part,
The first energizing part is connected to one end of the first coil unit,
A lens driving device wherein the second energizing unit is connected to one end of the second coil unit. printed circuit board;
An image sensor disposed on the printed circuit board;
The lens driving device of any one of claims 1 to 8 and 10 to 18 disposed on the printed circuit board; and
A camera module including a lens coupled to the bobbin of the lens driving device. main body;
The camera module of claim 19 disposed in the main body; and
An optical device including a display unit disposed on the main body and displaying images or photos captured by the camera module.

Images