KR20190037937A - Lens driving device, camera module and optical apparatus - Google Patents

Abstract

The present embodiment relates to a lens driving device, a camera module, and an optical device. More specifically the lens driving device comprises: a moving member; a substrate spaced downwardly from the moving member; and a wire connecting the moving member to the substrate, electrically connected to the substrate, and extending and contracting in length according to temperatures. The moving member includes a first portion and a second portion and the substrate includes a first portion and a second portion. The wire includes: a first wire connecting the first portion of the moving member to the first portion of the substrate to have the length; a second wire connecting the first portion of the moving member to the second portion of the substrate to have the length; a third wire connecting the second portion of the moving member to the first portion of the substrate to have the length; and a fourth wire connecting the second portion of the moving member to the second portion of the substrate to have the length. Power is applied from the substrate to the wire, the first portion of the moving member includes a first ground terminal electrically connected to the first wire and the second wire, and the second portion of the moving member includes a second ground terminal electrically connected to the third wire and the fourth wire. According to the present invention, the size of the camera module can be reduced.

Description

TECHNICAL FIELD [0001] The present invention relates to a lens driving device, a camera module,

The present embodiment relates to a lens driving device, a camera module, and an optical device.

The following description provides background information for the present embodiment and does not describe the prior art.

As the spread of various portable terminals is widely popularized and the wireless Internet service is commercialized, the demands of consumers related to portable terminals are diversified, and various kinds of additional devices are installed in portable terminals.

Among them, there is a camera module which photographs a subject as a photograph or a moving picture. Recently, a camera module having an anti-shake function for moving or tilting the lens module in the direction perpendicular to the optical axis direction is emerging so as to cancel the vibration (motion) generated in the image sensor by an external force.

However, in order to incorporate the hand shake correction function, the number of parts increases and the coupling relation becomes complicated, which makes the manufacturing process of the camera module complicated and raises the price.

In the present embodiment, a lens driving device, a camera module equipped with the lens driving device, and an optical device equipped with the camera module can be provided by using a shape memory alloy to reduce the number of components of the camera module and realize a compact structure do.

The lens driving apparatus of this embodiment includes a moving member; A substrate spaced downwardly from the moving member; A wire connecting the movable member and the substrate and electrically connected to the substrate and being elongated in length according to a temperature, the movable member including a first portion and a second portion, Wherein the wire comprises a first wire having a length connecting the first portion of the moving member to the first portion of the substrate and a second wire having a length that is substantially equal to the length of the first portion of the moving member, A second wire having a length connecting the second portion and a third wire having a length connecting the second portion of the moving member and the first portion of the substrate; And a fourth wire having a length connecting the first portion of the substrate and the second portion of the substrate, wherein power is applied to the wire at the substrate, The second portion of the second wire and the movable member, and a first grounding terminal electrically connected to may include a second ground terminal that is electrically connected to the fourth wire and the third wire.

The first portion of the moving member does not overlap with the first portion of the substrate and the second portion of the substrate in a vertical direction and the second portion of the moving member contacts the first portion of the substrate and the second portion of the substrate, And may not overlap with the second portion of the substrate in the vertical direction.

Wherein the first portion of the substrate includes a first power terminal that is electrically coupled to the first wire and a second power terminal that is electrically coupled to the third wire, And a fourth power supply terminal electrically connected to the fourth wire.

The first wire and the second wire may be a single member integrally formed, and the third wire and the fourth wire may be a single member integrally formed.

Wherein the first wire extends in a first axial direction in the first portion of the moving member and is disposed obliquely in a direction in which the substrate is positioned and the second wire is movable in the second axial direction And the third wire is extended in a second axial direction in the second portion of the moving member and is arranged to be inclined in a direction in which the substrate is located, and the fourth wire The first and second shafts extend in the first axis direction in the second portion of the moving member and are arranged to be inclined in the direction in which the substrate is placed, and the first and second shafts are arranged vertically to each other and perpendicularly to the vertical direction .

The wire may be elongated and contracted in length depending on the strength of the applied power.

The moving member can move in at least one of a first axial direction and a second axial direction by expansion and contraction of at least one of the first wire, the second wire, the third wire and the fourth wire.

Wherein the wire is fixed in the first portion of the moving member, the second portion of the moving member, the first portion of the substrate and the second portion of the substrate, the wire is a shape memory alloy, In the form of a three-dimensional spiral having a spiral center axis.

Further comprising a conductive member disposed at an edge of the substrate and coupled to the wire and electrically connecting the wire and the substrate, wherein the conductive member is disposed in a plate form perpendicular to the upper surface of the substrate, And the wire is disposed in the groove of the conductive member and can be engaged with the conductive member.

The conductive member may be integrally formed with the substrate, and may be rounded up from an edge of the substrate.

The camera module of this embodiment includes a movable member; A lens module mounted on the movable member; A base spaced apart from the movable member; A substrate positioned between the moving member and the base and disposed on the base, the substrate being spaced apart from the moving member; An image sensor facing the lens module; A main board on which the image sensor is mounted; A wire connecting the movable member and the substrate and electrically connected to the substrate and being elongated in length according to a temperature, the movable member including a first portion and a second portion, Wherein the wire comprises a first wire having a length connecting the first portion of the moving member to the first portion of the substrate and a second wire having a length that is substantially equal to the length of the first portion of the moving member, A second wire having a length connecting the second portion and a third wire having a length connecting the second portion of the moving member and the first portion of the substrate; And a fourth wire having a length connecting the first portion of the substrate and the second portion of the substrate, wherein power is applied to the wire at the substrate, The second portion of the second wire and the movable member, and a first grounding terminal electrically connected to may include a second ground terminal that is electrically connected to the fourth wire and the third wire.

The optical apparatus of this embodiment includes a main body; A display panel disposed on one side of the main body; And a camera module disposed in the main body and electrically connected to the display panel, the camera module including: a movable member; A lens module mounted on the movable member; A base spaced apart from the movable member; A substrate positioned between the moving member and the base and disposed on the base, the substrate being spaced apart from the moving member; An image sensor facing the lens module; A main board on which the image sensor is mounted; A wire connecting the movable member and the substrate and electrically connected to the substrate and being elongated in length according to a temperature, the movable member including a first portion and a second portion, Wherein the wire comprises a first wire having a length connecting the first portion of the moving member to the first portion of the substrate and a second wire having a length that is substantially equal to the length of the first portion of the moving member, A second wire having a length connecting the second portion and a third wire having a length connecting the second portion of the moving member and the first portion of the substrate; And a fourth wire having a length connecting the first portion of the substrate and the second portion of the substrate, wherein power is applied to the wire at the substrate, The second portion of the second wire and the movable member, and a first grounding terminal electrically connected to may include a second ground terminal that is electrically connected to the fourth wire and the third wire.

The present embodiment provides a lens driving apparatus capable of moving or tilting the lens module in the direction perpendicular to the optical axis by using four wires. The wire is a shape memory alloy, and when it is supplied with current, it expands and contracts itself. Therefore, the lens driving apparatus of the present embodiment can reduce the size of the camera module and has an advantage in terms of the manufacturing process.

1 is a cross-sectional view conceptually showing a camera module equipped with the lens driving device of this embodiment.
2 is a perspective view conceptually showing the lens driving device of the present embodiment.
3 is a plan view schematically showing the moving member, the substrate, and the wire of the lens driving apparatus of the present embodiment.
4 is a plan view schematically showing the moving member, the substrate, and the wire of the lens driving apparatus according to the first modification.
5 is a plan view schematically showing the moving member, the substrate, and the wire of the lens driving apparatus of the second modification.
Fig. 6 is a plan view conceptually showing the principle of operation of the lens driving apparatus of this embodiment.
7 is a conceptual view showing a wire and a conductive member of the lens driving device of the present embodiment.
8 is a plan view conceptually showing a moving member, a substrate, a wire, and a substrate of the lens driving apparatus of the third modification.
Fig. 9 is a conceptual view showing a wire of the lens driving device of the third modification.

Hereinafter, some embodiments of the present invention will be described with reference to exemplary drawings. In describing the components in the drawings, the same components are denoted by the same reference numerals whenever possible, even if they are displayed on other drawings. In the following description of the embodiments of the present invention, a detailed description of known functions and configurations incorporated herein will be omitted when it may make the difference that the embodiments of the present invention are not conclusive.

In describing the components of the embodiment of the present invention, terms such as first, second, A, B, (a), and (b) may be used. These terms are intended to distinguish the constituent elements from other constituent elements, and the terms do not limit the nature, order or order of the constituent elements. When a component is described as being "connected", "coupled", or "connected" to another component, the component may be directly connected, coupled, or connected to the other component, It is to be understood that another element may be "connected "," coupled ", or "connected" between elements.

May be the " X axis "shown in the drawing, the" second axis "may be the" Y axis " Z axis ". The "optical axis direction" used below is defined as the optical axis direction of the lens module in a state of being coupled to the lens driving device. On the other hand, the "optical axis direction" can be used in combination with "vertical direction", "vertical direction", "Z axis direction" and the like. In this case, the first axis, the second axis, and the third axis may be arranged to be mutually orthogonal.

The "hand shake correction function" used below is defined as a function of moving or tilting the lens module in a direction perpendicular to the optical axis direction so as to cancel the vibration (motion) generated in the image sensor by an external force. On the other hand, "hand shake correction" can be mixed with "Optical Image Stabilization (OIS) ".

Hereinafter, the configuration of the optical device according to the present embodiment will be described. The optical apparatus according to the present embodiment may be applied to a mobile phone, a mobile phone, a smart phone, a portable smart device, a digital camera, a laptop computer, a digital broadcast terminal, a PDA (Personal Digital Assistants) ), Navigation, and the like, but is not limited thereto, and any device for capturing an image or a photograph is possible.

The optical apparatus according to the present embodiment includes a main body (not shown), a display panel (not shown) arranged on one side (one side) of the main body to display information, And a camera module 10.

The camera module 10 may be electrically connected to the display panel. An image or a photograph photographed by the camera module 10 can be reproduced on the display panel.

Hereinafter, the configuration of the camera module according to the present embodiment will be described with reference to the drawings. 1 is a cross-sectional view conceptually showing a camera module according to the present embodiment.

The camera module of this embodiment may include a lens module 1, a main substrate 2, an image sensor 3, an infrared cut filter 4, a control unit (not shown) and a lens driving apparatus 1000.

The lens module 1 may include a lens and a lens barrel. The lens module 1 may include one or more lenses (not shown) and a lens barrel for accommodating one or more lenses. However, one configuration of the lens module 1 is not limited to the lens barrel, and any structure can be used as long as it can support one or more lenses. The lens module 1 can be coupled to the lens driving apparatus 1000 and move together with the lens driving apparatus 1000. [ The lens module 1 may be disposed in the housing 200 of the lens driving apparatus 1000 as an example. In this case, the inner peripheral surface of the lens module 1 and the housing 200 can be in contact with each other. The lens module 1 may be screwed to the housing 200 of the lens driving apparatus 1000 as an example. The lens module 1 may be coupled to the housing 200 of the lens driving apparatus 1000 by an adhesive (not shown) as an example. On the other hand, the light having passed through the lens module 1 can be irradiated to the image sensor 3.

The main board 2 may be a printed circuit board (PCB). The main board 2 can support the lens driving apparatus 1000. [ The image sensor 3 can be mounted on the main board 2. [ For example, a sensor holder (not shown) may be positioned outside the upper surface of the main substrate 2, and an image sensor 3 may be disposed on the upper surface of the main substrate 2. The lens driving apparatus 1000 may be positioned above the sensor holder. Alternatively, the lens driving apparatus 1000 may be positioned outside the upper surface of the main substrate 2, and the image sensor 3 may be positioned inside the upper surface of the main substrate 2. [ With this structure, light having passed through the lens module 1 housed inside the lens driving apparatus 1000 can be irradiated to the image sensor 3 mounted on the main substrate 2. [ The main board 2 can supply power to the lens driving apparatus 1000. [ On the other hand, a control unit for controlling the lens driving apparatus 1000 may be disposed on the main substrate 2. [

The image sensor 3 can be mounted on the main board 2. [ The image sensor 3 may be positioned such that the optical axis of the lens module 1 is aligned with the optical axis. Thereby, the image sensor 3 can acquire the light that has passed through the lens module 1. The image sensor 3 can output the irradiated light as an image. The image sensor 3 may be, for example, a CCD (charge coupled device), a metal oxide semiconductor (MOS), a CPD and a CID. However, the type of the image sensor 3 is not limited thereto.

The infrared cutoff filter 4 can block the light of the infrared region from being incident on the image sensor 3. The infrared cutoff filter 4 may be positioned between the lens module 1 and the image sensor 3 as an example. The infrared cutoff filter 4 may be located in a holder member (not shown) provided separately from the base 600 of the lens driving apparatus 1000. However, the infrared cut-off filter 4 may be mounted in a hole formed in a central portion of the base 600. The infrared cutoff filter 4 may be formed of, for example, a film material or a glass material. The infrared cutoff filter 4 may be formed by coating an infrared ray blocking coating material on a flat optical filter such as a cover glass for protecting an image pickup surface and a cover glass.

The control unit may be mounted on the main board 2. [ The control unit may be located outside the lens driving apparatus 1000. However, the control unit may be located inside the lens driving apparatus 1000. The control unit can control the direction, intensity, and amplitude of the current supplied to each of the components constituting the lens driving apparatus 1000. The control unit may control the lens driving apparatus 1000 to perform the camera shake correction function of the camera module 10. [ That is, the control unit can control the lens driving apparatus 1000 to move or tilt the lens module 1 in the direction perpendicular to the optical axis direction. Furthermore, the control unit can perform feedback control of the shake correction function. More specifically, the control unit receives the position of the housing 200 of the lens driving apparatus 1000 sensed by the sensor (not shown), and accordingly supplies the power to the wire 500 of the lens driving apparatus 1000 It is possible to provide an accurate camera shake correction function by controlling the current.

Hereinafter, the lens driving apparatus 1000 of the present embodiment will be described with reference to the drawings. 2 is a perspective view conceptually showing the lens driving apparatus of the present embodiment, FIG. 3 is a plan view schematically showing the moving member, the substrate and the wire of the lens driving apparatus of this embodiment, FIG. 4 is a cross- 5 is a plan view conceptually showing the moving member, the substrate and the wire of the lens driving apparatus of the second modification, and Fig. 6 is a plan view of the lens driving apparatus of the present embodiment FIG. 7 is a conceptual view showing a wire and a conductive member of the lens driving device of the present embodiment. FIG. 8 is a plan view showing the principle of operation of the lens driving device of the third modified example, And Fig. 9 is a conceptual view showing a wire of the lens driving device of the third modification.

The lens driving apparatus 1000 of the present embodiment may include a cover 100, a housing 200, a movable member 300, a substrate 400, a wire 500, a base 600, and a conductive member 910 have.

The cover 100 may be an exterior member of the lens driving apparatus 1000. The cover 100 may include a top plate in the form of a square plate and a plurality of side plates extending downward from the respective sides of the top plate. The upper plate may have a hole centered on the optical axis. The holes of the cover 100 are for providing a light path. Accordingly, the cover 100 may be in the form of a cube block having a lower surface opened and a hole aligned with the optical axis on the upper surface.

A base 600 may be disposed below the cover 100. The cover 100 may be supported by the base 600. The cover 100 can be engaged with the base 600. In this case, the lower end of the side plate of the cover 100 can be joined to the upper surface of the base 600 by an adhesive. A base 600 is disposed on the lower surface of the cover 100 so that an inner space can be formed by the cover 100 and the base 600. The housing 200, the moving member 300, the substrate 400, and the wire 500 can be accommodated in the inner space of the cover 100.

The material of the cover 100 may include a metal. In this case, the cover 100 can block the penetration of the electromagnetic from the outside or the electromagnetic emission from the inside to the outside. That is, the cover 100 can shield the electromagnetic waves. Therefore, the cover 100 may be referred to as a "shield can ". However, the material of the cover 100 is not limited thereto. In one example, the material of the cover 100 may comprise plastic. In this case, the cover 100 can be manufactured by plastic injection.

The housing 200 may have a hollow shape in which holes are formed in the optical axis direction. The housing 200 can be received in the interior of the cover 100. The housing 200 may be disposed on the moving member 300. The housing 200 can be supported by the movable member 300. The housing 200 may be spaced upward from the substrate 400. The housing 200 may be spaced upward from the base 600. The housing 200 can engage with the movable member 300. For example, the lower surface of the housing 200 and the upper surface of the moving member 300 may be bonded with an adhesive. The housing 200 can move integrally with the movable member 300. The lens module 1 can be accommodated in the housing 200. The lens module 1 may be mounted on the housing 200. As a result, the lens module 1 can be moved integrally by the movement of the movable member 300 to perform the hand shake correction function. The material of the housing 200 may include a plastic material. The housing 200 may be a plastic injection molding. The housing 200 and the moving member 300 may be integrally formed. In this case, the housing 200 may be referred to as a "moving member ".

The movable member 300 can be received in the interior of the cover 100. The housing 200 may be disposed on the moving member 300. The movable member 300 may be spaced upward from the substrate 400. The movable member 300 may be spaced upward from the base 600. The movable member 300 may be connected to the substrate 400 by a wire 500. The moving member 300 may be spaced upward from the substrate 400 by the supporting force of the wire 500.

The shifting member 300 may include a body 310 and a first portion 320 and a second portion 330.

The body 310 of the movable member 300 may be in the form of a square plate having a hole at the center thereof. The holes of the body 310 of the movable member 300 are for providing a light path. The first portion 320 of the moving member 300 and the second portion 330 of the moving member 300 may be positioned on the body 310 of the movable member 300 in a diagonal direction.

The first portion 320 of the movable member 300 may be connected to the first portion 410 and the second portion 420 of the substrate 400 by the first wire 510 and the second wire 520 . The first portion 320 of the shifting member 300 may engage the first wire 510 and the second wire 520. One end of the first wire 510 and the second wire 520 may be fixed to the first portion 320 of the moving member 300. The first portion 320 of the movable member 300 is moved in the direction in which the movable member 300 and the substrate 400 are spaced apart from each other in the first portion 410 and the second portion 420 of the substrate 400 Axis direction, up-and-down direction).

The first portion 320 of the shifting member 300 may include a first ground terminal 321 (GND 1). One end of the first wire 510 and one end of the second wire 520 may be fixed to the first ground terminal 321. The first ground terminal 321 may be electrically connected to the first wire 510 and the second wire 520. The first ground terminal 321 may be a ground of the first power terminal 411 and the third power terminal 421 or VCC 3. Therefore, in this embodiment, two wires can be controlled by one ground terminal, which is advantageous in terms of structure and electrical control design.

However, in the first modification (see FIG. 4), the first wire 510 and the second wire 520 may be a single member formed integrally. Hereinafter, a single member in which the first wire 510 and the second wire 520 are integrally formed is referred to as a "first member 501 ". 4, the illustration of the first ground terminal 321 is omitted in order to clearly show that the first wire 510 and the second wire 520 are integrally formed (position, Only).

In this case, one end of the first member 501 may be fixed (coupled) to the first power supply terminal 411. [ One end of the first member 501 may be electrically connected to the first power terminal 411. The other end of the first member 501 may be fixed to the third power source terminal 421. The other end of the first member 501 may be electrically connected to the third power source terminal 421. An intermediate portion of the first member 501 may be fixed (coupled) to the first ground terminal 321. [ An intermediate portion of the first member 501 may be fixed (coupled) to the first ground terminal 321. [ The first member 501 may connect the first ground terminal 321 and the first power terminal 411. The first member 501 may connect the first ground terminal 321 and the third power terminal 421. A portion of the first member 501 connecting the first ground terminal 321 and the first power terminal 411 may perform the same function as the first wire 510. A portion of the first member 501 connecting the first ground terminal 321 and the third power terminal 421 may perform the same function as the second wire 520. Therefore, in the first modification, the two wires can be controlled by controlling one member, which is advantageous in terms of structure and electrical control design.

5), the first portion 320 of the movable member 300 is connected to the first 1-1 ground terminal 321-1 and the 1-2nd ground terminal (GND 1-1) 321-2, GND 1-2). In this modification, the ground terminals may be two, and the two ground terminals may correspond to the first power source terminal 411 and the third power source terminal 421, respectively.

In this case, one end of the first wire 510 may be fixed (coupled) to the 1-1 ground terminal 321-1. That is, the first 1-1 ground terminal 321-1 may be electrically connected to the first wire 510. The 1-1 ground terminal 321-1 may be ground of the first power terminal 411. [ In addition, one end of the second wire 520 may be fixed (coupled) to the first 1-2 ground terminal 321-2. That is, the first 1-2 ground terminal 321-2 may be electrically connected to the second wire 520. The 1-2 ground terminal 321-2 may be ground of the third power supply terminal 421. [

The second portion 330 of the shifting member 300 may be connected to the first portion 410 and the second portion 420 of the substrate 400 by a third wire 530 and a fourth wire 540 . The second portion 330 of the shifting member 300 may engage the third wire 530 and the fourth wire 540. One end of the third wire 530 and the fourth wire 540 may be fixed to the second portion 330 of the movable member 300. The second portion 330 of the movable member 300 is moved in the direction in which the movable member 300 and the substrate 400 are spaced apart from each other in the first portion 410 and the second portion 420 of the substrate 400 Axis direction, up-and-down direction).

The second portion 330 of the shifting member 300 may include a second ground terminal 331 (GND 2). One end of the third wire 530 and one end of the fourth wire 540 may be fixed (coupled) to the second ground terminal 321. The second ground terminal 321 may be electrically connected to the third wire 530 and the fourth wire 540. The second ground terminal 331 may be grounded between the second power terminal 412 and the fourth power terminal 422 or VCC 4. Therefore, in this embodiment, two wires can be controlled by one ground terminal, which is advantageous in terms of structure and electrical control design.

However, in the first modification (see FIG. 4), the third wire 530 and the fourth wire 540 may be a single member formed integrally. Hereinafter, a single member in which the third wire 530 and the fourth wire 540 are integrally formed is referred to as a "second member 502 ". 4, the second ground terminal 331 is not shown in order to clearly show that the third wire 530 and the fourth wire 540 are integrally formed (position, Only).

In this case, one end of the second member 502 may be fixed (coupled) to the second power supply terminal 412. One end of the second member 502 may be electrically connected to the second power terminal 412. And the other end of the second member 502 may be fixed to the fourth power supply terminal 422. [ The other end of the second member 502 may be electrically connected to the fourth power supply terminal 422. The middle portion of the second member 502 may be fixed (coupled) to the second ground terminal 331. [ The middle portion of the second member 502 may be fixed (coupled) to the second ground terminal 331. [ The second member 502 may connect the second ground terminal 331 and the second power terminal 412. The second member 502 may connect the second ground terminal 331 and the fourth power terminal 422. A portion of the second member 502 connecting the second ground terminal 331 and the second power terminal 412 may perform the same function as the third wire 530. The portion of the second member 502 connecting the second ground terminal 331 and the fourth power terminal 422 may perform the same function as the fourth wire 540. Therefore, in the first modification, the two wires can be controlled by controlling one member, which is advantageous in terms of structure and electrical control design.

5), the second portion 330 of the shifting member 300 is connected to the second-1 ground terminal 331-1 (GND 2-1) and the second 2-2 ground terminal (GND 2-1) 331-2, GND 2-2). In this modification, the ground terminals may be two, and the two ground terminals may correspond to the second power terminal 411 and the fourth power terminal 422, respectively.

In this case, one end of the third wire 530 may be fixed (coupled) to the second-1 ground terminal 331-1. In other words, the second-1 ground terminal 331-1 may be electrically connected to the third wire 530. The 2-1 ground terminal 331-1 may be ground of the second power terminal 412. [ One end of the fourth wire 540 may be fixed (coupled) to the second -2 ground terminal 331-2. That is, the second to 2-th ground terminal 331-2 may be electrically connected to the fourth wire 540. And the 2-2 ground terminal 331-2 may be the ground of the fourth power terminal 422. [

The movable member 300 can be moved or tilted in the direction (second axis direction, third axis direction) perpendicular to the optical axis by the wire 500. As a result, the hand shake correction function can be performed.

The substrate 400 may be a printed circuit board (PCB). The substrate 400 may be received within the cover 100. The substrate 400 may be located under the moving member 300. The substrate 400 may be disposed on top of the base 600. The substrate 400 may be supported by the base 600. The substrate 400 may be coupled to the base 600. In this case, the lower surface of the substrate 400 and the upper surface of the base 600 can be bonded with an adhesive.

The substrate 400 may be connected to the moving member 300 by a wire 500. The substrate 400 may be electrically connected to the wire 500. The substrate 400 may be electrically connected to the main substrate 2 of the camera module 10. The substrate 400 may receive power or current from the main substrate 2 and transmit the power or current to the wire 500. The substrate 400 may be formed in the form of a square plate and a hole formed at the center thereof. The holes in the substrate 400 are for providing a light path.

The substrate 400 may include a first portion 410 and a second portion 420. The first portion 410 and the second portion 420 of the substrate 400 may be spaced apart from one another.

The first portion 410 of the substrate 400 may be connected to the first portion 320 and the second portion 330 of the moving member 300 by the first wire 510 and the third wire 530 . The first portion 410 of the substrate 400 may engage the first wire 510 and the third wire 530. The other end of the first wire 510 and the third wire 530 may be fixed to the first portion 410 of the substrate 400. The first portion 410 of the substrate 400 is moved along the first portion 320 and the second portion 330 of the moving member 300 and the direction in which the moving member 300 and the substrate 400 are spaced apart Axis direction).

The first portion 410 of the substrate 400 may include a first power terminal 411 and a second power terminal 412 and VCC 2.

The other end of the first wire 510 may be soldered and fixed to the first power terminal 411. The first power terminal 411 may be electrically connected to the first wire 510. The first power terminal 411 can supply power to the first wire 510. In this case, the magnitude, direction, intensity, and the like of the current supplied from the first power supply terminal 411 can be controlled by the controller of the camera module 10.

The other end of the third wire 530 may be fixed (coupled) to the second power terminal 412. The second power terminal 412 may be electrically connected to the third wire 530. The second power terminal 412 may supply power to the third wire 530. In this case, the magnitude, direction, intensity, and the like of the current supplied from the second power terminal 412 can be controlled by the controller of the camera module 10.

The second portion 420 of the substrate 400 can be coupled to the first portion 320 and the second portion 330 of the moving member 300 by the second wire 520 and the fourth wire 540 have. The other end of the second wire 520 and the fourth wire 540 may be fixed to the second portion 420 of the substrate 400. The second portion 420 of the substrate 400 is moved in a direction in which the first portion 320 and the second portion 330 of the moving member 300 and the moving member 300 and the substrate 400 are spaced apart Axis direction).

The second portion 420 of the substrate 400 may include third power terminals 421 and VCC 3 and fourth power terminals 422 and VCC 4.

The other end of the second wire 520 may be fixed (coupled) to the third power supply terminal 421. The third power terminal 421 may be electrically connected to the second wire 520. The third power terminal 421 can supply power to the second wire 520. In this case, the magnitude, direction, intensity, and the like of the current supplied from the third power source terminal 421 can be controlled by the controller of the camera module 10. [

The other end of the fourth wire 540 may be fixed (coupled) to the fourth power terminal 422. The fourth power terminal 422 may be electrically connected to the fourth wire 540. The fourth power terminal 422 can supply power to the fourth wire 540. In this case, the magnitude, direction, intensity, and the like of the current supplied from the fourth power terminal 422 can be controlled by the controller of the camera module 10.

The first portion 320 of the moving member 300 and the second portion 330 of the moving member 300 and the first portion 410 of the substrate 400 and the second portion 330 of the substrate 400 420 may be disposed at the corners of the virtual rectangles, respectively. In this case, the first portion 320 and the second portion 330 of the movable member 300 may be disposed apart from each other in a first diagonal direction from a virtual rectangle. Also, the first portion 410 and the second portion 420 of the substrate 400 may be spaced apart from each other in a second diagonal direction from an imaginary square.

The wire 500 may connect the moving member 300 and the substrate 400. The wire 500 supports the moving member 300 so that the moving member 300 can be spaced upward from the substrate 400 and the base 600. The wire 500 may be electrically connected to the substrate 400. The wire 500 may be mounted on the conductive member 910 and electrically connected to the substrate 400.

The wire 500 may be a shape memory alloy. The shape of the wire 500 changes depending on the temperature, and the length of the wire 500 can be expanded and contracted. That is, when power (current) is applied to the wire 500 from the substrate 400, the wire 500 generates heat and can expand and contract in the longitudinal direction. The driving force can be provided to the moving member 300 by the stretching effect of the wire 500.

Wire 500 may be in the form of a three-dimensional spiral having a spiral center axis in the longitudinal direction. Wire 500 may be in the form of a solid coil. In this case, the amount of change in length with respect to the amount of change in the shape of the wire 500 can be maximized.

The wire 500 may include a first wire 510, a second wire 520, a third wire 530, and a fourth wire 540.

The first wire 510 may have a length by connecting the first portion 320 of the moving member 300 and the first portion 410 of the substrate 400. The second wire 520 may have a length by connecting the first portion 320 of the moving member 300 and the second portion 420 of the substrate 400. The third wire 530 may have a length by connecting the second portion 330 of the moving member 300 and the first portion 410 of the substrate 400. The fourth wire 540 may have a length by connecting the second portion 330 of the moving member 300 and the second portion 330 of the substrate 400.

The first wire 510 extends in the first axis (X axis) direction in the first portion 320 of the moving member 300 and may be disposed to be inclined in a direction in which the substrate 400 is positioned. The first wire 510 may be inclined downward from the moving member 300 toward the substrate 400. The shifting member 300 may be supported by the first wire 510 and spaced upward from the substrate 400. One end of the first wire 510 may be electrically connected to the first ground terminal 321 and the other end of the first wire 520 may be electrically connected to the first power terminal 411. The first wire 510 can be driven by receiving power (current) from the first power terminal 411. However, in this modification, one end of the first wire 520 may be electrically connected to the 1-1th ground terminal 321-1.

The second wire 520 extends in the second axis (Y axis) direction from the first portion 320 of the moving member 300 and may be disposed to be inclined in a direction in which the substrate 400 is positioned. The second wire 520 may be inclined downward from the moving member 300 toward the substrate 400. The movable member 300 may be supported by the second wire 520 and spaced upward from the substrate 400. One end of the second wire 520 may be electrically connected to the first ground terminal 321 and the other end of the second wire 520 may be electrically connected to the third power terminal 421. The second wire 520 can be driven by receiving a power (current) from the third power supply terminal 421. However, in this modification, one end of the second wire 520 may be electrically connected to the first 1-2 ground terminal 321-2.

The third wire 530 extends in the second axis 330 of the moving member 300 in the direction of the second axis Y and may be inclined in a direction in which the substrate 400 is positioned. The third wire 530 may be inclined downward from the moving member 300 toward the substrate 400. As a result, the movable member 300 can be supported by the third wire 530 and spaced upward from the substrate 400. One end of the third wire 530 may be electrically connected to the second ground terminal 331 and the other end of the third wire 530 may be electrically connected to the second power terminal 412. The third wire 530 can be driven by receiving a power (current) from the second power terminal 412. However, in this modification, one end of the third wire 530 may be electrically connected to the second-1 ground terminal 331-1.

The fourth wire 540 may extend in the first axis (X axis) direction in the second portion 330 of the moving member 300 and may be inclined in a direction in which the substrate 400 is positioned. The fourth wire 540 may be inclined downward from the moving member 300 toward the substrate 400. As a result, the movable member 300 can be supported by the fourth wire 540 and spaced upward from the substrate 400. One end of the fourth wire 540 may be electrically connected to the second ground terminal 331 and the other end of the fourth wire 540 may be electrically connected to the fourth power terminal 422. The fourth wire 540 can receive and supply power (current) from the fourth power supply terminal 422. However, in this modification, one end of the fourth wire 540 may be electrically connected to the second -2 ground terminal 331-2.

The base 600 can support the cover 100. The base 600 may be disposed under the cover 100. The base 600 may support the substrate 400. The base 600 may be disposed below the substrate 400. The base 600 is combined with the substrate 400 to make the weight of the substrate 400 heavier than the weight of the moving member 300. Therefore, the relatively movable member 300 moves due to the change of the shape of the wire 400.

Hereinafter, the conductive member 910 will be described with reference to FIG. The conductive member 910 is a member that exists separately because the shape memory alloy can not be electrically connected to the substrate 400 by soldering (soldering). The conductive member 910 may be located at the edge of the substrate 400. The conductive member 910 may be formed of a conductive material, and one side may be electrically connected to the substrate 400 and the other side may be electrically connected to the wire 500.

The conductive member 910 may be in the form of a plate arranged perpendicularly or obliquely to the upper surface of the substrate 400. A groove 911 can be formed in the upper end of the conductive member 910. The groove of the conductive member 910 may become smaller as it goes downward. The grooves of the conductive member 910 may be in a straight line shape, a "V shape" shape, or a "U shape" shape. The wire 500 may be inserted and fixed in the groove 911 of the conductive member 910. In this case, the wire 500 can be engaged with the groove 911 of the conductive member 910.

The conductive member 910 may include a first conductive member, a second conductive member, a third conductive member, and a fourth conductive member. The first conductive member is located in the first portion 410 of the substrate 400 and may fix the first wire 510. The second conductive member may be located in the first portion 410 of the substrate 400 and may secure the third wire 530. The third conductive member 530 is located in the second portion 420 of the substrate 400 and may fix the second wire 520. The fourth conductive member 540 may be located on the second portion 420 of the substrate 400 and may secure the fourth wire 540.

Meanwhile, the conductive member 910 may be integrally formed with the substrate 400, and may be rounded (curved or bent) from the edge of the substrate 400.

7 (1) shows a case where the conductive member 910 exists separately from the substrate 400 and has a groove 911 of "V-shape", and FIG. 7 (2) Shows a case in which the conductive member 910 is formed integrally with the substrate 400 and has a groove 911 of "V shape". In FIG. 7 (3), the conductive member 910 exists separately from the substrate 400 7 shows a case in which the conductive member 910 is formed integrally with the substrate 400 and has a U-shaped groove 911. The U- As shown in Fig.

Hereinafter, the operation of the lens driving apparatus 1000 of the present embodiment will be described with reference to FIG. As described above, the wire 500 of the present embodiment can be expanded and contracted in the longitudinal direction by changing the temperature by a power source (current) applied from the substrate 400. [

The first wire 510 is extended in the longitudinal direction and the fourth wire 540 is contracted in the longitudinal direction so that the moving member 300 is moved in the X-axis direction along the first axis (X axis) Lt; / RTI > In this case, the second wire 520 and the third wire 530 maintain the length, and can be disposed obliquely to the second axis (Y axis) as the moving member 300 moves.

The second wire 520 is elongated in the longitudinal direction and the third wire 530 is contracted in the longitudinal direction so that the movable member 300 is moved along the second axis (Y axis) Lt; / RTI > In this case, the first wire 510 and the fourth wire 540 maintain their lengths and can be arranged to be inclined with respect to the first axis (X axis) as the moving member 300 moves.

The first wire 510 and the second wire 520 are elongated in the longitudinal direction and the third wire 530 and the fourth wire 540 are elongated in the longitudinal direction as shown in FIG. 4 (3) , The moving member 300 can move to the composite vector point in the positive direction of the first axis (X axis) and the positive direction of the second axis (Y axis) (diagonal movement).

The lens driving apparatus 1000 of the present embodiment is provided with the lens driving apparatus 1000 capable of moving the lens module 1 in various directions perpendicular to the optical axis (third axis) by the four shape memory alloys ).

Hereinafter, the lens driving apparatus of the third modification will be described with reference to FIG. 8, in the lens driving apparatus of the third modification, the substrate 400 includes a first substrate 410 extending upward from the main body 401 and vertically disposed on the upper surface of the main body, 410, a third substrate 430, and a fourth substrate 440.

The first substrate 410, the second substrate 410, the third substrate 430 and the fourth substrate 440 may be a printed circuit board (PCB) or a flexible printed circuit board (FPCB) ).

The first substrate 410 may be disposed on the opposite side of the second substrate 420 (inversely). The first substrate 410 and the second substrate 420 may be disposed so as to be parallel to each other with the moving member 700 interposed therebetween. The first substrate 410 and the second substrate 420 may be spaced apart from each other in the second axis direction. The third substrate 430 may be disposed on the opposite side of the fourth substrate 440 (inversely). The third substrate 430 and the fourth substrate 440 may be disposed so as to be parallel to each other with the moving member 700 interposed therebetween. The third substrate 430 and the fourth substrate 440 may be spaced apart from each other in the first axis direction.

The moving member 700 may be disposed inside the first substrate 410, the second substrate 420, the third substrate 430, and the fourth substrate 440. The moving member 700 includes a first surface 710 opposed to the first substrate 410, a second surface 720 opposed to the second substrate 420, and a second surface 720 opposed to the third substrate 430. [ A third surface 730, and a fourth surface 740 facing the fourth substrate 440.

The first surface 710 of the moving member 700 may include a first engaging portion 711 protruding in a direction in which the first substrate 410 is positioned. The first engaging portion 711 may be located at the center of the first surface 710. The second surface 720 of the moving member 700 may include a second engaging portion 721 protruding in a direction in which the second substrate 420 is positioned. The second latching portion 721 may be located at the center of the second surface 720. The third surface 730 of the moving member 700 may include a third engaging portion 731 protruding in a direction in which the third substrate 430 is located. The third latching portion 731 may be located at the center of the third surface 730. The fourth surface 740 of the moving member 700 may include a fourth engaging portion 741 protruding in a direction in which the fourth substrate 440 is located. The fourth engaging portion 741 may be located at the center of the fourth surface 740. The first engaging portion 711 and the second engaging portion 721 may be located on the second axis. The third latching part 731 and the fourth latching part 741 may be located on the first axis.

The driving member 800 includes a first driving member 810 extending from the first locking portion 711 to the fourth substrate 440 and a second driving member 810 extending from the second locking portion 721 to the third substrate 430 A third driving member 830 extending from the third engaging portion 731 to the first substrate 410 and having a length and a fourth engaging portion 741, And a fourth driving member 840 having a length extending from the second substrate 420 to the second substrate 420.

The first driving member 810 and the second driving member 820 may be disposed parallel to each other. The first driving member 810 and the second driving member 820 are spaced apart from each other in the second axis direction (Y axis) and may have a length in the first axis direction (X axis). The third driving member 830 and the fourth driving member 840 may be arranged parallel to each other. The third driving member 830 and the fourth driving member 840 are spaced apart from each other in the first axis direction (X axis) and may have a length in the second axis direction (Y axis).

One side of the first driving member 810 may engage with the first engaging portion 711 and the other side may engage with the fourth substrate 440. In this case, one side of the first driving member 810 may engage with the first engaging portion 711, and the other side of the first driving member 810 may be electrically connected to the fourth substrate 440.

One side of the second driving member 820 may engage with the second engaging portion 721 and the other side thereof may engage with the third substrate 430. In this case, one side of the second driving member 820 may engage with the second engaging portion 721, and the other side of the second driving member 820 may be electrically connected to the third substrate 430.

One side of the third driving member 830 may engage with the third engaging portion 731 and the other side may engage with the first substrate 410. In this case, one side of the third driving member 830 may engage with the third engaging portion 731, and the other side of the third driving member 830 may be electrically connected to the first substrate 410.

One side of the fourth driving member 840 may engage with the fourth engaging portion 741 and the other side may engage with the second substrate 420. In this case, one side of the fourth driving member 840 may engage with the fourth engaging portion 741, and the other side of the fourth driving member 840 may be electrically connected to the second substrate 420.

Hereinafter, the structure of the driving member 800 will be described in detail with reference to FIG. The first driving member 810 may include a first driving member 811, a first driving member 812, and a first ring 813. The 1-1st driving member 811 and the 1-2 driving member 812 may be arranged parallel to each other and one end may be disposed on the first ring 813 and the other end may be disposed on the fourth substrate 440 . The 1-1 driving member 811 and the 1-2 driving member 812 may be electrically connected to the fourth substrate 440. When the power source (current) is applied from the fourth substrate 440, the 1-1st driving member 811 and the 1-2 driving member 812 can extend and contract in the same first axis direction (X axis) . The first ring 813 is caught by the first engaging portion 711 and the moving member 700 receives driving force from the 1-1 driving member 811 and the 1-2 driving member 812 have.

The second driving member 820 may include a second-1 driving member 821, a second-2 driving member 822, and a second ring 823. [ The second-first driving member 821 and the second-second driving member 822 may be disposed parallel to each other, one end may be disposed on the second ring 823, and the other end may be disposed on the third substrate 430 . The second-first driving member 821 and the second-second driving member 822 may be electrically connected to the third substrate 430. When the power source (current) is applied from the third substrate 430, the second-first driving member 821 and the second-second driving member 822 can expand and contract in the same first axis direction (X axis) . The second ring 823 is caught by the second engaging portion 721 and the moving member 700 receives drive force from the second-1 driving member 821 and the second-second driving member 822 have.

The third driving member 830 may include a third-first driving member 831, a third-second driving member 832, and a third loop 833. The third-first driving member 831 and the third-second driving member 832 may be disposed in parallel to each other, one end may be disposed on the third ring 833, and the other end may be disposed on the first substrate 410 . The 3-1 driving member 831 and the 3-2 driving member 832 may be electrically connected to the first substrate 410. When the power source (current) is applied to the first substrate 410, the third-first driving member 831 and the third-second driving member 832 can expand and contract in the same manner in the second axis direction (Y axis) . The third ring 833 is caught by the third engaging portion 731 and the moving member 700 receives driving force from the 3-1 driving member 831 and the 3-2 driving member 832 have.

The fourth driving member 840 may include a fourth driving member 841, a fourth driving member 842, and a fourth ring 843. [ The 4-1 driving member 841 and the 4-2 driving member 842 may be arranged in parallel to each other and one end may be disposed on the fourth ring 843 and the other end may be disposed on the second substrate 420 . The 4-1 driving member 841 and the 4-2 driving member 842 may be electrically connected to the second substrate 420. When the power source (current) is applied from the second substrate 420, the 4-1 driving member 841 and the 4-2 driving member 842 can extend and contract in the same manner in the second axis direction (Y axis) . The fourth ring 843 is caught by the fourth engaging portion 741 and the moving member 700 receives driving force from the 4-1 driving member 841 and the 4-2 driving member 842 have.

In the third modification, the moving member 700 can move in the first axis direction (X axis) by the driving force of the first driving member 810 and the second driving member 820. For example, the movable member 700 can move in the first axis direction (X axis plus direction) by reducing the length of the first driving member 810 and extending the length of the second driving member 820. In the reverse case, the moving member 700 can move in the other direction of the first axis (negative direction of the X axis). The moving member 700 can move in the second axial direction (Y axis) by the driving force of the third driving member 830 and the fourth driving member 840. For example, the length of the third driving member 830 may be reduced and the length of the fourth driving member 840 may be increased so that the moving member 700 may move in one direction of the second axis (Y axis plus direction). In the opposite case, the moving member 700 can move in the second axis other direction (negative direction of the Y axis).

While the present invention has been described in connection with what is presently considered to be the most practical and preferred embodiment, it is to be understood that the invention is not limited to the disclosed embodiments. That is, within the scope of the present invention, all of the components may be selectively coupled to one or more of them. Furthermore, the terms "comprises", "comprising", or "having" described above mean that a component can be implanted unless otherwise specifically stated, But should be construed as including other elements. All terms, including technical and scientific terms, have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs, unless otherwise defined. Commonly used terms, such as predefined terms, should be interpreted to be consistent with the contextual meanings of the related art, and are not to be construed as ideal or overly formal, unless expressly defined to the contrary.

The foregoing description is merely illustrative of the technical idea of the present invention, and various changes and modifications may be made by those skilled in the art without departing from the essential characteristics of the present invention. Therefore, the embodiments disclosed in the present invention are intended to illustrate rather than limit the scope of the present invention, 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 construed according to the following claims, and all technical ideas within the scope of equivalents should be construed as falling within the scope of the present invention.

Claims (12)

A moving member;
A substrate spaced downwardly from the moving member; And
A wire connecting the movable member and the substrate, electrically connected to the substrate, and extending and contracting in length according to temperature;
The moving member includes a first portion and a second portion, the substrate including a first portion and a second portion,
The wire comprising a first wire having a length connecting the first portion of the moving member and the first portion of the substrate and a second wire connecting the first portion of the moving member to the second portion of the substrate, A third wire having a length connecting the second portion of the moving member to the first portion of the substrate and a second wire connecting the second portion of the substrate to the second portion of the substrate, And a fourth wire having a length,
Wherein the first portion of the moving member includes a first ground terminal that is electrically connected to the first wire and the second wire, the second portion of the moving member is powered, And a second ground terminal electrically connected to the third wire and the fourth wire.
The method according to claim 1,
The first portion of the moving member does not overlap with the first portion of the substrate and the second portion of the substrate in a vertical direction and the second portion of the moving member contacts the first portion of the substrate and the second portion of the substrate, And does not overlap with the second portion of the substrate in the vertical direction.
The method according to claim 1,
Wherein the first portion of the substrate includes a first power terminal electrically connected to the first wire and a second power terminal electrically connected to the third wire,
Wherein the second portion of the substrate comprises a third power terminal electrically connected to the second wire and a fourth power terminal electrically connected to the fourth wire.
The method of claim 3,
Wherein the first wire and the second wire are a single member integrally formed,
Wherein the third wire and the fourth wire are a single member integrally formed.
The method according to claim 1,
Wherein the first wire extends in a first axial direction in the first portion of the moving member and is disposed obliquely in a direction in which the substrate is located,
Wherein the second wire extends in the second axial direction in the first portion of the moving member and is inclined in a direction in which the substrate is located,
The third wire extends in the second axial direction in the second portion of the moving member and is inclined in a direction in which the substrate is located,
Wherein the fourth wire extends in the first axial direction in the second portion of the moving member and is arranged to be inclined in the direction in which the substrate is located,
Wherein the first axis and the second axis are arranged vertically to each other and are arranged vertically to the vertical direction.
6. The method of claim 5,
Wherein the wire is stretched and contracted in length according to the intensity of the applied power.
6. The method of claim 5,
Wherein the moving member moves in at least one of a first axial direction and a second axial direction by expansion and contraction of at least one of the first wire, the second wire, the third wire, and the fourth wire, .
The method according to claim 1,
The wire being fixed at the first portion of the moving member, the second portion of the moving member, the first portion of the substrate and the second portion of the substrate,
Wherein the wire is a shape memory alloy and is in the form of a three-dimensional spiral having a spiral center axis in the longitudinal direction.
The method according to claim 1,
Further comprising a conductive member disposed at an edge of the substrate and coupled to the wire and electrically connecting the wire and the substrate,
Wherein the conductive member is disposed perpendicularly to the upper surface of the substrate in a plate shape and has a groove formed at an upper end thereof and the wire is disposed in a groove of the conductive member to engage with the conductive member.
10. The method of claim 9,
Wherein the conductive member is integrally formed with the substrate and is rounded upward from an edge of the substrate.
A moving member;
A lens module mounted on the movable member;
A base spaced apart from the movable member;
A substrate positioned between the moving member and the base and disposed on the base, the substrate being spaced apart from the moving member;
An image sensor facing the lens module;
A main board on which the image sensor is mounted and disposed under the base; And
A wire connecting the movable member and the substrate, electrically connected to the substrate, and extending and contracting in length according to temperature;
The moving member includes a first portion and a second portion, the substrate including a first portion and a second portion,
The wire comprising a first wire having a length connecting the first portion of the moving member and the first portion of the substrate and a second wire connecting the first portion of the moving member to the second portion of the substrate, A third wire having a length connecting the second portion of the moving member to the first portion of the substrate and a second wire connecting the second portion of the substrate to the second portion of the substrate, And a fourth wire having a length,
Wherein the first portion of the moving member includes a first ground terminal that is electrically connected to the first wire and the second wire, the second portion of the moving member is powered, And a second ground terminal electrically connected to the third wire and the fourth wire.
main body;
A display panel disposed on one side of the main body; And
And a camera module disposed in the main body and electrically connected to the display panel,
The camera module includes:
A moving member;
A lens module mounted on the movable member;
A base spaced apart from the movable member;
A substrate positioned between the moving member and the base and disposed on the base, the substrate being spaced apart from the moving member;
An image sensor facing the lens module;
A main board on which the image sensor is mounted and disposed under the base; And
A wire connecting the movable member and the substrate, electrically connected to the substrate, and extending and contracting in length according to temperature;
The moving member includes a first portion and a second portion, the substrate including a first portion and a second portion,
The wire comprising a first wire having a length connecting the first portion of the moving member and the first portion of the substrate and a second wire connecting the first portion of the moving member to the second portion of the substrate, A third wire having a length connecting the second portion of the moving member to the first portion of the substrate and a second wire connecting the second portion of the substrate to the second portion of the substrate, And a fourth wire having a length,
Wherein the first portion of the moving member includes a first ground terminal that is electrically connected to the first wire and the second wire, the second portion of the moving member is powered, And a second ground terminal electrically connected to the third wire and the fourth wire.

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